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Article

Wide Distribution of Teratosphaeria epicoccoides and T. destructans Associated with Diseased Eucalyptus Leaves in Plantations in Southern China

1
Research Institute of Fast-Growing Trees (RIFT), Chinese Academy of Forestry (CAF), Zhanjiang 524022, China
2
College of Forestry, Nanjing Forestry University (NJFU), Nanjing 210037, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Microorganisms 2024, 12(1), 129; https://doi.org/10.3390/microorganisms12010129
Submission received: 6 December 2023 / Revised: 31 December 2023 / Accepted: 2 January 2024 / Published: 9 January 2024
(This article belongs to the Special Issue Plant Pathogens: Monitoring, Identification and Biological Control)

Abstract

:
Species of Mycosphaerellaceae and Teratosphaeriaceae represent over 40% of the fungi identified on eucalypt leaves worldwide. These include some important pathogens that mainly cause leaf blight and spot, and result in increasingly negative impacts on global commercial eucalypt industries. Eucalyptus plantations are commonly cultivated in southern China for solid wood and pulp products. However, the species diversity and geographic distribution of Mycosphaerellaceae and Teratosphaeriaceae, associated with diseased plantation Eucalyptus leaves in China, have not been clarified. In this study, we conducted the first systematic surveys and sample collections of Mycosphaerellaceae- and Teratosphaeriaceae-like fungi from diseased plantation Eucalyptus leaves in southern China. In total, 558 isolates were obtained from 59 sampled sites in five provinces. One isolate was isolated from each tree. According to the disease symptoms, conidia morphological characteristics, and DNA sequence comparisons of ITS, tef1 and tub2 gene regions. The 558 isolates were identified as Teratosphaeria epicoccoides (312 isolates; 55.9%) and T. destructans (246 isolates, 44.1%). Both species were widely distributed in the sampled regions in southern China. The genotypes of T. epicoccoides and T. destructans were determined based on ITS, tef1, and tub2 sequences. The results showed that multiple genotypes of each species of T. epicoccoides and T. destructans exist in China. Additionally, isolates with multiple genotypes were obtained in all five sampled provinces. These results suggest that both T. epicoccoides and T. destructans are not clonal. This study proved that both T. epicoccoides and T. destructans are dominant species and widely distributed on diseased Eucalyptus leaves in southern China. The wide geographic distribution and potential high genetic diversity pose challenges for the disease management of Teratosphaeria leaf blight and leaf spot in China.

1. Introduction

In China, eucalypts plantations have expanded rapidly to meet the increasing demand for wood and pulp [1]. Occupying approximately 5.4 million hm2 in China in 2018, the plantations account for 6.8% of the national plantation area and provide more than one-third of the total national commercial timber production [2]. Eucalyptus plantations are mainly planted in the southern regions of China, especially in Guangxi, Guangdong, Yunnan, and Fujian Provinces. Mostly, selected genotypes of Eucalyptus urophylla × E. grandis hybrids are planted and grown [3].
In China, Eucalyptus plantations are primarily located in tropical and subtropical regions, where a diverse array of pathogenic fungi can easily proliferate [4]. Due to extensive contiguous planting and a monotonous genetic makeup, Eucalyptus plantations in China are highly susceptible to the rapid and widespread proliferation of diseases when affected by some pathogenic microorganisms [5,6]. Currently, important diseases affecting plantation Eucalyptus in China include bacterial wilt, caused by Ralstonia pseudosolanacearum [6,7,8]; stem canker/wilt, caused by species of Botryosphaeriaceae, Cryphonectriaceae, and Teratosphaeria zuluensis [4,9,10,11,12]; leaf blight/spot, caused by species of Teratosphaeriaceae and Mycosphaerellaceae [13]; Calonectria [14,15,16,17]; and Quambalaria [18,19]. With the exception of bacterial wilt, the other diseases are all caused by pathogenic fungi.
Globally, leaf diseases on Eucalyptus caused by the fungi of Mycosphaerellaceae and Teratosphaeriaceae are widely distributed [20,21,22,23]. In recent years, a number of novel species of Mycosphaerellaceae and Teratosphaeriaceae have been isolated from diseased Eucalyptus leaves and described [23,24,25], some of which are known to cause leaf diseases on Eucalyptus. According to the research findings of Crous et al. [23], species belonging to Mycosphaerellaceae and Teratosphaeriaceae demonstrate a high species diversity on a global scale. Species from these two families represent over 40% of the fungi identified on eucalypts leaves worldwide [23].
In China, several species of Mycosphaerellaceae and Teratosphaeriaceae have been implicated as a cause of Eucalyptus leaf spot/blight [26,27,28,29,30]. Of the foliar pathogens belonging to Mycosphaerellaceae and Teratosphaeriaceae isolated from Eucalyptus leaves in China, only T. destructans (causing Eucalyptus leaf blight) [26] and Pseudocercospora chiangmaiensis (responsible for Eucalyptus circular leaf spot) [28,31] were identified based on both DNA sequence comparisons and morphological characteristics. The identification of the remaining species causing leaf spot/blight relied solely on morphological features [32,33,34,35,36,37]. More than 600 Eucalyptus species are native to Australia, with only a few species endemic to Papua New Guinea, some parts of Indonesia and the Philippines [38,39]. Many fungi of Mycosphaerellaceae and Teratosphaeriaceae have been described from Eucalyptus foliage in Australia, and most were considered to be endemic [23,40,41]. Previous studies have shown that Mycosphaerellaceae and Teratosphaeriaceae exhibit high species diversity; species in these two families are the predominant fungi on diseased Eucalyptus leaves globally [23]. In China, research on the species diversity of Mycosphaerellaceae and Teratosphaeriaceae fungi on diseased Eucalyptus leaves is very limited, and the identification of some of these species is not accurate because of the lack of DNA sequence data [26,27,29,30]. Furthermore, there are limited systematic studies on their geographical distribution. Recently, we collected diseased Eucalyptus leaves with typical mature fruiting structures of Mycosphaerellaceae and Teratosphaeriaceae from Eucalyptus plantations in Yunnan, Guangxi, Hainan, Guangdong, and Fujian Provinces in southern China. We subsequently isolated these fungi. The aims of this study were to: (i) identify these fungi based on DNA sequence comparisons of multi-gene regions and morphological characteristics; and (ii) explore the geographical distribution characteristics of Mycosphaerellaceae and Teratosphaeriaceae species on diseased Eucalyptus leaves in southern China.

2. Materials and Methods

2.1. Disease Symptoms, Samples, and Fungal Isolations

The study was mainly conducted from July to October 2022, and from February to April 2023. The sampled regions had high temperatures (20 °C–35 °C) and high levels of humidity (60–90%). Diseases caused by Mycosphaerellaceae and Teratosphaeriaceae were surveyed on Eucalyptus plantations in the Guangxi, Guangdong, Yunnan, Hainan, and Fujian provinces in southern China. At most sampling sites, the trees were 1 to 2 years old. E. urophylla × E. grandis hybrids were dominant, although a few genotypes of E. urophylla, E. urophylla × E. tereticomis, and E. urophylla × E. pellita were also surveyed (Table 1). In the plantations, the leaves of trees infected by Mycosphaerellaceae and Teratosphaeriaceae fungi, resulting in leaf spot, vein delimitation, chlorosis, and intense defoliation were identified (Figure 1A,B). In some surveyed regions, all trees in the plantations were infected (Figure 1A,B). Based on the diseased symptoms, two groups of fungi causing different diseases were observed. The first group of fungi mainly infected mature and old leaves and produced abundant small spots on the infected leaves. The second group of fungi mainly infected the juvenile leaves, but affected some mature leaves as well, and resulted in water-soaked, chlorosis, and wrinkled symptoms on the infected leaves (Figure 1C–N). Disease symptoms of the first group of fungi were frequently observed in most surveyed Eucalyptus plantations. Disease symptoms with the second group of fungi were observed occasionally in some regions in southern China (Figure 1O–R). Diseased leaves with typical fruiting structures of Mycosphaerellaceae and Teratosphaeriaceae were collected from 3–59 trees, or approximately 30 trees, at the majority of sampling sites, depending on the area of the sampled plantation. Diseased leaf samples were transported to the laboratory for morphological examination, isolation, and further assessments.
Fungal isolates in the conidiomata with the typical morphological characteristics of Mycosphaerellaceae and Teratosphaeriaceae [23] were isolated from diseased leaves. The conidia masses in the conidiomata were scattered onto 2% malt extract agar (MEA) (20 g malt extract powder and 20 g agar powder per liter of water; malt extract powder was obtained from the Beijing Shuangxuan Microbial Culture Medium Products factory, Beijing, China; the agar powder was obtained from Beijing Solarbio Science & Technology Co., Ltd., Beijing, China) with sterile needles under a stereoscopic microscope (AxioCam Stemi 2000C, Carl Zeiss, Jena, Germany). After incubation at 25 °C for 6–10 h, the germinated conidia were transferred individually onto fresh 2% MEA under the dissection microscope and incubated at 25 °C for four weeks to obtain single-conidium cultures. One single-conidium culture was obtained from leaves of each sampled tree. All the single-conidium cultures were deposited in the culture collection (CSF) of the Research Institute of Fast-growing Trees (RIFT), Chinese Academy of Forestry (CAF), in Zhanjiang, Guangdong Province, China.

2.2. DNA Extraction, PCR Amplification, and Sequencing

All isolates obtained were used for DNA extraction and sequence analyses. DNA was extracted from four-week-old cultures. Mycelia were scraped using a sterilized scalpel and transferred to 2.0 mL Eppendorf tubes. The total genomic DNA was extracted using the CTAB protocol, as described by van Burik et al. [42]. The extracted DNA was dissolved in 30 μL of TE buffer (1 M Tris-HCl and 0.5 M EDTA, pH = 8.0). To degrade the RNA, 2.5 μL RNase (10 mg/mL) was added at 37 °C for one hour. The DNA concentration was measured using a NanoDrop 2000 spectrometer (Thermo Fisher Scientific, Waltham, MA, USA).
Based on previous research results, DNA sequences of the internal transcribed spacer regions and intervening 5.8S nrRNA gene (ITS), partial translation elongation factor 1-alpha (tef1) gene, and partial β-tubulin (tub2) gene were used as reliable DNA barcodes to clearly distinguish species in Mycosphaerellaceae and Teratosphaeriaceae, especially species of Teratosphaeria [25,26,43,44]. The three partial gene regions of T. epicoccoides were amplified using the primer pairs V9G /ITS-4 [45], EF1-728F/EF2 [46,47] and BT2a/BT2b [48], respectively. The three partial gene regions of T. destructans were amplified using the primer pairs ITS-3 /ITS-4 [45], EF1-728F/EF1-986R [46] and BT2a/BT2b [48], respectively. The PCR procedure was conducted as described by Andjic and co-authors [26].
All the PCR products of all isolates obtained in this study were sequenced in both the forward and reverse directions with the same primers used in the PCR amplification. Sequence reactions were conducted at the Beijing Genomics Institute, Guangzhou, China. All sequences obtained were edited using MEGA v. 7.0 software [49], and were deposited in GenBank (https://www.ncbi.nlm.nih.gov, accessed on 6 December 2023). The ITS, tef1, and tub2 gene regions were sequenced for all isolates obtained in this study.

2.3. Multi-Gene Phylogenetic Analyses and Species Identification

All isolates obtained in this study were genotyped by their ITS, tef1, and tub2 sequences. Based on the genotypes generated by the ITS, tef1, and tub2 sequences, sequences of two isolates for each ITS–tef1tub2 genotype were selected for phylogenetic analyses. Isolates with the same genotype were considered to be the same species.
The preliminary identities of the isolates obtained in this study were determined by conducting a standard nucleotide BLAST search using all the generated sequences of ITS, tef1, and tub2. The BLAST results indicated that the isolates obtained in this study were grouped in the genus Teratosphaeria. The sequences of the type strains closely related to the Teratosphaeria isolates sequenced in the current study were downloaded from the NCBI database (http://www.ncbi.nlm.nih.gov/ accessed on 15 October 2023) and used for phylogenetic analyses (Table 3).
Table 2. Isolates sequenced and used for phylogenetic analyses in this study.
Table 2. Isolates sequenced and used for phylogenetic analyses in this study.
Sampling Site No. aProvinceIsolate No. b,cSample and Isolate Information dSpeciesGenBank Accession No. eGenotype g
ITStef1tub2
1YunnanCSF2565420230315-2-(2)T. destructansOR961532OR980975OR973016AAA
1YunnanCSF2565520230315-2-(3)T. destructansOR961533OR980976OR973017AAA
1YunnanCSF25656 c20230315-2-(4)T. destructansOR961534OR980977OR973018BAA
1YunnanCSF2565720230315-2-(6)T. destructansOR961535OR980978OR973019AAA
1YunnanCSF2565820230315-2-(7)T. destructansOR961536OR980979OR973020AAA
1YunnanCSF25659 c20230315-2-(8)T. epicoccoidesOR961537OR980980OR973021ABA
1YunnanCSF2566020230315-2-(9)T. destructansOR961538OR980981OR973022AAA
1YunnanCSF2566120230315-2-(10)T. destructansOR961539OR980982OR973023AAA
1YunnanCSF2568620230315-2-(12)T. epicoccoidesOR961540OR980983OR973024AAA
1YunnanCSF2568720230315-2-(13)T. epicoccoidesOR961541OR980984OR973025ECA
1YunnanCSF2568820230315-2-(15)T. epicoccoidesOR961542OR980985OR973026ECA
1YunnanCSF2568920230315-2-(16)T. epicoccoidesOR961543OR980986OR973027ACA
1YunnanCSF2569020230315-2-(17)T. epicoccoidesOR961544OR980987OR973028AAA
1YunnanCSF2569120230315-2-(19)T. epicoccoidesOR961545OR980988OR973029AAA
2YunnanCSF2564020230315-1-(1)T. destructansOR961546OR980989OR973030AAA
2YunnanCSF2564120230315-1-(2)T. destructansOR961547OR980990OR973031AAA
2YunnanCSF2564220230315-1-(3)T. destructansOR961548OR980991OR973032AAA
2YunnanCSF2564320230315-1-(4)T. destructansOR961549OR980992OR973033AAA
2YunnanCSF2564420230315-1-(5)T. destructansOR961550OR980993OR973034AAA
2YunnanCSF2564520230315-1-(6)T. destructansOR961551OR980994OR973035AAA
2YunnanCSF2564620230315-1-(7)T. destructansOR961552OR980995OR973036AAA
2YunnanCSF2564720230315-1-(8)T. destructansOR961553OR980996OR973037AAA
2YunnanCSF2564820230315-1-(9)T. destructansOR961554OR980997OR973038AAA
2YunnanCSF2564920230315-1-(10)T. destructansOR961555OR980998OR973039AAA
2YunnanCSF2565020230315-1-(11)T. destructansOR961556OR980999OR973040AAA
2YunnanCSF2565120230315-1-(12)T. destructansOR961557OR981000OR973041AAA
2YunnanCSF2565220230315-1-(13)T. destructansOR961558OR981001OR973042AAA
2YunnanCSF2565320230315-1-(14)T. destructansOR961559OR981002OR973043AAA
2YunnanCSF25683 c20230315-1-(24)T. epicoccoidesOR961560OR981003OR973044AAA
2YunnanCSF2568520230315-1-(29)T. epicoccoidesOR961561OR981004OR973045AAA
3YunnanCSF2567120230314-2-(12)T. epicoccoidesOR961562OR981005OR973046AAA
3YunnanCSF2567220230314-2-(13)T. epicoccoidesOR961563OR981006OR973047ACA
3YunnanCSF2567320230314-2-(14)T. epicoccoidesOR961564OR981007OR973048AAA
3YunnanCSF2567420230314-2-(15)T. epicoccoidesOR961565OR981008OR973049EAA
3YunnanCSF2567520230314-2-(16)T. epicoccoidesOR961566OR981009OR973050AAA
3YunnanCSF2567620230314-2-(17)T. epicoccoidesOR961567OR981010OR973051AAA
4YunnanCSF2563720230314-1-(4)T. destructansOR961568OR981011OR973052AAA
4YunnanCSF2563820230314-1-(10)T. destructansOR961569OR981012OR973053AAA
4YunnanCSF2563920230314-1-(13)T. destructansOR961570OR981013OR973054AAA
5YunnanCSF2566220230315-3-(1)T. destructansOR961571OR981014OR973055AAA
5YunnanCSF2566320230315-3-(2)T. destructansOR961572OR981015OR973056AAA
5YunnanCSF2566420230315-3-(3)T. destructansOR961573OR981016OR973057AAA
5YunnanCSF2566520230315-3-(4)T. destructansOR961574OR981017OR973058AAA
5YunnanCSF2566620230315-3-(5)T. destructansOR961575OR981018OR973059AAA
5YunnanCSF2566720230315-3-(6)T. destructansOR961576OR981019OR973060AAA
5YunnanCSF2566820230315-3-(7)T. destructansOR961577OR981020OR973061AAA
5YunnanCSF2566920230315-3-(8)T. destructansOR961578OR981021OR973062AAA
5YunnanCSF2567020230315-3-(9)T. destructansOR961579OR981022OR973063AAA
5YunnanCSF2569820230315-3-(16)T. epicoccoidesOR961580OR981023OR973064AAA
5YunnanCSF2569920230315-3-(17)T. epicoccoidesOR961581OR981024OR973065ACA
5YunnanCSF2570020230315-3-(18)T. epicoccoidesOR961582OR981025OR973066EAA
5YunnanCSF2570120230315-3-(19)T. epicoccoidesOR961583OR981026OR973067EAA
5YunnanCSF2570220230315-3-(21)T. epicoccoidesOR961584OR981027OR973068ACA
6YunnanCSF2570320230316-2-(1)T. epicoccoidesOR961585OR981028OR973069DIA
6YunnanCSF25704 c20230316-2-(2)T. epicoccoidesOR961586OR981029OR973070DIA
6YunnanCSF2570520230316-2-(4)T. epicoccoidesOR961587OR981030OR973071DIA
6YunnanCSF2570620230316-2-(6)T. epicoccoidesOR961588OR981031OR973072DIA
6YunnanCSF2570720230316-2-(7)T. epicoccoidesOR961589OR981032OR973073DIA
6YunnanCSF2570820230316-2-(8)T. epicoccoidesOR961590OR981033OR973074DIA
7YunnanCSF2571320230317-1-(1)T. epicoccoidesOR961591OR981034OR973075AAA
7YunnanCSF2571420230317-1-(2)T. epicoccoidesOR961592OR981035OR973076AAA
7YunnanCSF2571520230317-1-(4)T. epicoccoidesOR961593OR981036OR973077EAA
7YunnanCSF2571620230317-1-(6)T. epicoccoidesOR961594OR981037OR973078EAA
7YunnanCSF2571720230317-1-(7)T. epicoccoidesOR961595OR981038OR973079ECA
7YunnanCSF2571820230317-1-(8)T. epicoccoidesOR961596OR981039OR973080AAA
8YunnanCSF2572520230318-1-(1)T. epicoccoidesOR961597OR981040OR973081ECA
8YunnanCSF2572620230318-1-(2)T. epicoccoidesOR961598OR981041OR973082EAA
8YunnanCSF25727 c20230318-1-(3)T. epicoccoidesOR961599OR981042OR973083FCA
8YunnanCSF25728 c20230318-1-(4)T. epicoccoidesOR961600OR981043OR973084CAA
8YunnanCSF2572920230318-1-(5)T. epicoccoidesOR961601OR981044OR973085EAA
8YunnanCSF2573020230318-1-(6)T. epicoccoidesOR961602OR981045OR973086EAA
9YunnanCSF2573720230318-2-(1)T. epicoccoidesOR961603OR981046OR973087AAA
9YunnanCSF2573820230318-2-(2)T. epicoccoidesOR961604OR981047OR973088EAA
9YunnanCSF2573920230318-2-(3)T. epicoccoidesOR961605OR981048OR973089EAA
9YunnanCSF2574020230318-2-(4)T. epicoccoidesOR961606OR981049OR973090AAA
9YunnanCSF2574120230318-2-(5)T. epicoccoidesOR961607OR981050OR973091EAA
9YunnanCSF2574220230318-2-(6)T. epicoccoidesOR961608OR981051OR973092EAA
10YunnanCSF2575020230318-3-(1)T. epicoccoidesOR961609OR981052OR973093EAA
10YunnanCSF2575120230318-3-(2)T. epicoccoidesOR961610OR981053OR973094EAA
10YunnanCSF2575220230318-3-(3)T. epicoccoidesOR961611OR981054OR973095EAA
10YunnanCSF2575320230318-3-(4)T. epicoccoidesOR961612OR981055OR973096CAA
10YunnanCSF2575420230318-3-(7)T. epicoccoidesOR961613OR981056OR973097AAA
10YunnanCSF2575520230318-3-(8)T. epicoccoidesOR961614OR981057OR973098AAA
11YunnanCSF2576320230319-1-(2)T. epicoccoidesOR961615OR981058OR973099EAA
11YunnanCSF2576420230319-1-(3)T. epicoccoidesOR961616OR981059OR973100ACA
11YunnanCSF2576520230319-1-(5)T. epicoccoidesOR961617OR981060OR973101AAA
11YunnanCSF2576620230319-1-(6)T. epicoccoidesOR961618OR981061OR973102CAA
11YunnanCSF2576720230319-1-(7)T. epicoccoidesOR961619OR981062OR973103AAA
12GuangxiCSF25066 c20220703-1-(1)T. epicoccoidesOR961620OR981063OR973104ABA
12GuangxiCSF2506720220703-1-(3)T. destructansOR961621OR981064OR973105CAA
12GuangxiCSF2506820220703-1-(4)T. destructansOR961622OR981065OR973106CAA
12GuangxiCSF2506920220703-1-(5)T. destructansOR961623OR981066OR973107AAA
12GuangxiCSF2507020220703-1-(6)T. destructansOR961624OR981067OR973108CAA
12GuangxiCSF2507120220703-1-(8)T. destructansOR961625OR981068OR973109AAA
12GuangxiCSF25072 c20220703-1-(10)T. epicoccoidesOR961626OR981069OR973110XDA
12GuangxiCSF25218 c20220703-1-(12)T. epicoccoidesOR961627OR981070OR973111AAA
12GuangxiCSF2521920220703-1-(14)T. epicoccoidesOR961628OR981071OR973112CAA
12GuangxiCSF2522020220703-1-(15)T. epicoccoidesOR961629OR981072OR973113ECA
12GuangxiCSF2522220220703-1-(18)T. epicoccoidesOR961630OR981073OR973114CAA
12GuangxiCSF2522320220703-1-(19)T. epicoccoidesOR961631OR981074OR973115BAA
13GuangxiCSF2508320220703-3-(1)T. destructansOR961632OR981075OR973116AAA
13GuangxiCSF2508420220703-3-(2)T. destructansOR961633OR981076OR973117CAA
13GuangxiCSF2508520220703-3-(3)T. destructansOR961634OR981077OR973118AAA
13GuangxiCSF2508620220703-3-(4)T. destructansOR961635OR981078OR973119CAA
13GuangxiCSF2508720220703-3-(5)T. destructansOR961636OR981079OR973120CAA
13GuangxiCSF2508820220703-3-(6)T. epicoccoidesOR961637OR981080OR973121XBA
13GuangxiCSF2508920220703-3-(7)T. destructansOR961638OR981081OR973122AAA
13GuangxiCSF2509020220703-3-(9)T. destructansOR961639OR981082OR973123CAA
13GuangxiCSF2509120220703-3-(10)T. destructansOR961640OR981083OR973124AAA
13GuangxiCSF25240 c20220703-3-(17)T. epicoccoidesOR961641OR981084OR973125EAA
13GuangxiCSF2524120220703-3-(19)T. epicoccoidesOR961642OR981085OR973126EAA
13GuangxiCSF2524220220703-3-(20)T. epicoccoidesOR961643OR981086OR973127EAA
13GuangxiCSF2524320220703-3-(22)T. epicoccoidesOR961644OR981087OR973128ACA
13GuangxiCSF2524420220703-3-(23)T. epicoccoidesOR961645OR981088OR973129AAA
13GuangxiCSF2524520220703-3-(24)T. epicoccoidesOR961646OR981089OR973130ACA
14GuangxiCSF25073 c20220703-2-(1)T. destructansOR961647OR981090OR973131AAA
14GuangxiCSF2507420220703-2-(2)T. destructansOR961648OR981091OR973132AAA
14GuangxiCSF25075 c20220703-2-(3)T. epicoccoidesOR961649OR981092OR973133XBA
14GuangxiCSF2507620220703-2-(4)T. destructansOR961650OR981093OR973134AAA
14GuangxiCSF2507720220703-2-(5)T. destructansOR961651OR981094OR973135AAA
14GuangxiCSF2507820220703-2-(6)T. destructansOR961652OR981095OR973136AAA
14GuangxiCSF2507920220703-2-(7)T. epicoccoidesOR961653OR981096OR973137ABA
14GuangxiCSF2508020220703-2-(8)T. destructansOR961654OR981097OR973138CAA
14GuangxiCSF2508120220703-2-(9)T. epicoccoidesOR961655OR981098OR973139XBA
14GuangxiCSF2508220220703-2-(10)T. destructansOR961656OR981099OR973140CAA
14GuangxiCSF2523120220703-2-(21)T. epicoccoidesOR961657OR981100OR973141AAA
14GuangxiCSF2523220220703-2-(22)T. epicoccoidesOR961658OR981101OR973142AAA
14GuangxiCSF2523320220703-2-(25)T. epicoccoidesOR961659OR981102OR973143EAA
15GuangxiCSF2509220220703-4-(1)T. destructansOR961660OR981103OR973144AAA
15GuangxiCSF2509320220703-4-(3)T. destructansOR961661OR981104OR973145AAA
15GuangxiCSF2509420220703-4-(4)T. destructansOR961662OR981105OR973146CAA
15GuangxiCSF2509520220703-4-(5)T. destructansOR961663OR981106OR973147CAA
15GuangxiCSF2509620220703-4-(6)T. destructansOR961664OR981107OR973148AAA
15GuangxiCSF2509720220703-4-(7)T. destructansOR961665OR981108OR973149AAA
15GuangxiCSF2509820220703-4-(8)T. destructansOR961666OR981109OR973150CAA
15GuangxiCSF2509920220703-4-(9)T. destructansOR961667OR981110OR973151CAA
15GuangxiCSF25247 c20220703-4-(10)T. epicoccoidesOR961668OR981111OR973152ECA
15GuangxiCSF2524820220703-4-(11)T. epicoccoidesOR961669OR981112OR973153AAA
16GuangxiCSF2505620220702-3-(1)T. destructansOR961670OR981113OR973154CAA
16GuangxiCSF2505720220702-3-(2)T. destructansOR961671OR981114OR973155CAA
16GuangxiCSF2505820220702-3-(3)T. destructansfOR981115OR973156-AA
16GuangxiCSF2505920220702-3-(4)T. destructansOR961672OR981116OR973157CAA
16GuangxiCSF2506020220702-3-(5)T. destructansOR961673OR981117OR973158AAA
16GuangxiCSF2506120220702-3-(6)T. destructansOR961674OR981118OR973159CAA
16GuangxiCSF2506220220702-3-(7)T. destructansOR961675OR981119OR973160AAA
16GuangxiCSF2506320220702-3-(8)T. destructansOR961676OR981120OR973161CAA
16GuangxiCSF2506420220702-3-(9)T. destructansOR961677OR981121OR973162CAA
16GuangxiCSF2506520220702-3-(10)T. destructansOR961678OR981122OR973163CAA
16GuangxiCSF25214 c20220702-3-(17)T. destructansOR961679OR981123OR973164CBA
16GuangxiCSF2521520220702-3-(18)T. epicoccoidesOR961680OR981124OR973165ECA
16GuangxiCSF2521620220702-3-(19)T. epicoccoidesOR961681OR981125OR973166ECA
16GuangxiCSF2521720220702-3-(20)T. epicoccoidesOR961682OR981126OR973167EAA
17GuangxiCSF2504620220702-2-(1)T. destructansOR961683OR981127OR973168CAA
17GuangxiCSF2504720220702-2-(2)T. destructansOR961684OR981128OR973169AAA
17GuangxiCSF25048 c20220702-2-(3)T. epicoccoidesOR961685OR981129OR973170CBA
17GuangxiCSF2504920220702-2-(4)T. destructansOR961686OR981130OR973171AAA
17GuangxiCSF2505020220702-2-(5)T. destructansOR961687OR981131OR973172AAA
17GuangxiCSF2505120220702-2-(6)T. destructansOR961688OR981132OR973173CAA
17GuangxiCSF2505220220702-2-(7)T. destructansOR961689OR981133OR973174AAA
17GuangxiCSF2505320220702-2-(8)T. destructansOR961690OR981134OR973175AAA
17GuangxiCSF25054 c20220702-2-(9)T. destructansOR961691OR981135OR973176CAA
17GuangxiCSF2505520220702-2-(10)T. destructansOR961692OR981136OR973177AAA
17GuangxiCSF2520420220702-2-(17)T. epicoccoidesOR961693OR981137OR973178EAA
17GuangxiCSF2520520220702-2-(18)T. epicoccoidesOR961694OR981138OR973179EAA
17GuangxiCSF2520620220702-2-(19)T. epicoccoidesOR961695OR981139OR973180EAA
17GuangxiCSF2520720220702-2-(20)T. epicoccoidesOR961696OR981140OR973181ECA
18GuangxiCSF2503620220702-1-(1)T. destructansOR961697OR981141AA-
18GuangxiCSF2503720220702-1-(2)T. destructansOR961698OR981142OR973182AAA
18GuangxiCSF2503820220702-1-(3)T. destructansOR961699OR981143OR973183CAA
18GuangxiCSF2503920220702-1-(4)T. destructansOR961700OR981144OR973184AAA
18GuangxiCSF2504020220702-1-(5)T. destructansOR961701OR981145OR973185AAA
18GuangxiCSF2504120220702-1-(6)T. destructansOR961702OR981146OR973186AAA
18GuangxiCSF25042 c20220702-1-(7)T. epicoccoidesOR961703OR981147OR973187DJA
18GuangxiCSF25043 c20220702-1-(8)T. epicoccoidesOR961704OR981148OR973188AHA
18GuangxiCSF25044 c20220702-1-(9)T. epicoccoidesOR961705OR981149OR973189DJA
18GuangxiCSF25045 c20220702-1-(10)T. epicoccoidesOR961706OR981150OR973190DHA
18GuangxiCSF25188 c20220702-1-(11)T. epicoccoidesOR961707OR981151OR973191ACA
18GuangxiCSF2518920220702-1-(12)T. epicoccoidesOR961708OR981152OR973192ACA
18GuangxiCSF2519220220702-1-(15)T. epicoccoidesOR961709OR981153OR973193ACA
18GuangxiCSF2519620220702-1-(19)T. epicoccoidesOR961710OR981154OR973194AEA
19GuangxiCSF2510020220704-1-(1)T. destructansOR961711OR981155OR973195CAA
19GuangxiCSF2510120220704-1-(2)T. destructansOR961712OR981156OR973196CAA
19GuangxiCSF2510220220704-1-(3)T. destructansOR961713OR981157OR973197CCA
19GuangxiCSF2510320220704-1-(4)T. destructansOR961714OR981158OR973198AAA
19GuangxiCSF2510420220704-1-(5)T. destructansOR961715OR981159OR973199CAA
19GuangxiCSF2510520220704-1-(6)T. destructansOR961716OR981160OR973200CAA
19GuangxiCSF2510620220704-1-(7)T. destructansOR961717OR981161OR973201CAA
19GuangxiCSF2510720220704-1-(8)T. destructansOR961718OR981162OR973202CAA
19GuangxiCSF2510820220704-1-(12)T. destructansOR961719OR981163OR973203CAA
19GuangxiCSF2510920220704-1-(13)T. destructansOR961720OR981164OR973204CAA
19GuangxiCSF2525020220704-1-(17)T. epicoccoidesOR961721OR981165OR973205ECA
19GuangxiCSF25251 c20220704-1-(18)T. epicoccoidesOR961722OR981166OR973206CCA
19GuangxiCSF2525220220704-1-(19)T. epicoccoidesOR961723OR981167OR973207ACA
19GuangxiCSF25253 c20220704-1-(20)T. epicoccoidesOR961724OR981168OR973208GGA
19GuangxiCSF2525420220704-1-(21)T. epicoccoidesOR961725OR981169OR973209ACA
20GuangxiCSF2511020220704-2-(1)T. destructansOR961726OR981170OR973210CAA
20GuangxiCSF2511120220704-2-(2)T. destructansOR961727OR981171OR973211AAA
20GuangxiCSF2511220220704-2-(4)T. destructansOR961728OR981172OR973212AAA
20GuangxiCSF2511320220704-2-(5)T. destructansOR961729OR981173OR973213AAA
20GuangxiCSF2511420220704-2-(6)T. destructansOR961730OR981174OR973214CAA
20GuangxiCSF2511520220704-2-(7)T. destructansOR961731OR981175OR973215AAA
20GuangxiCSF2511620220704-2-(8)T. destructansOR961732OR981176OR973216CAA
20GuangxiCSF2511720220704-2-(10)T. destructansOR961733OR981177OR973217AAA
20GuangxiCSF2511820220704-2-(11)T. destructansOR961734OR981178OR973218AAA
20GuangxiCSF2511920220704-2-(12)T. destructansOR961735OR981179OR973219AAA
20GuangxiCSF2512020220704-2-(13)T. destructansOR961736OR981180OR973220CAA
20GuangxiCSF2512120220704-2-(14)T. destructansOR961737OR981181OR973221ACA
20GuangxiCSF2512220220704-2-(15)T. destructansOR961738OR981182OR973222AAA
20GuangxiCSF2512320220704-2-(16)T. destructansOR961739OR981183OR973223CAA
20GuangxiCSF2525820220704-2-(17)T. epicoccoidesOR961740OR981184OR973224DIA
20GuangxiCSF2525920220704-2-(18)T. epicoccoidesOR961741OR981185OR973225ACA
20GuangxiCSF2526020220704-2-(19)T. epicoccoidesOR961742OR981186OR973226AFA
20GuangxiCSF2526120220704-2-(20)T. epicoccoidesOR961743OR981187OR973227ACA
20GuangxiCSF2526220220704-2-(21)T. epicoccoidesOR961744OR981188OR973228ACA
20GuangxiCSF2526320220704-2-(22)T. epicoccoidesOR961745OR981189OR973229ACA
21GuangxiCSF2512420220704-3-(1)T. destructansOR961746OR981190OR973230CAA
21GuangxiCSF2512520220704-3-(2)T. destructansOR961747OR981191OR973231CAA
21GuangxiCSF2512620220704-3-(3)T. destructansOR961748OR981192OR973232CAA
21GuangxiCSF2512720220704-3-(4)T. destructansOR961749OR981193OR973233CAA
21GuangxiCSF2512820220704-3-(5)T. destructansOR973234--A
21GuangxiCSF2512920220704-3-(6)T. destructansOR961750OR981194OR973235CAA
21GuangxiCSF2513020220704-3-(7)T. destructansOR961751OR981195OR973236CAA
21GuangxiCSF2513120220704-3-(8)T. destructansOR961752OR981196OR973237CAA
21GuangxiCSF2513220220704-3-(9)T. destructansOR961753OR981197OR973238AAA
21GuangxiCSF2513320220704-3-(10)T. destructansOR961754OR981198OR973239CAA
21GuangxiCSF2527020220704-3-(11)T. epicoccoidesOR961755OR981199OR973240ACA
21GuangxiCSF2527120220704-3-(13)T. epicoccoidesOR961756OR981200OR973241EAA
21GuangxiCSF2527220220704-3-(14)T. epicoccoidesOR961757OR981201OR973242EAA
21GuangxiCSF2527320220704-3-(16)T. epicoccoidesOR961758OR981202OR973243ACA
21GuangxiCSF2527420220704-3-(18)T. epicoccoidesOR961759OR973244A-A
21GuangxiCSF2527520220704-3-(20)T. epicoccoidesOR961760OR981203OR973245EAA
22HainanCSF2530920221026-6-(1)T. epicoccoidesOR961761OR981204OR973246ECA
22HainanCSF2531020221026-6-(2)T. epicoccoidesOR961762OR981205OR973247ECA
22HainanCSF2531120221026-6-(3)T. epicoccoidesOR961763OR981206OR973248EAA
23HainanCSF2515820221026-7-(1)T. destructansOR961764OR981207OR973249CAA
23HainanCSF2515920221026-7-(2)T. destructansOR961765OR981208OR973250CAA
23HainanCSF2516020221026-7-(3)T. destructansOR961766OR981209OR973251CAA
23HainanCSF2516120221026-7-(4)T. destructansOR961767OR981210OR973252AAA
23HainanCSF2516220221026-7-(5)T. destructansOR961768OR981211OR973253CAA
23HainanCSF2516320221026-7-(6)T. destructansOR961769OR981212OR973254AAA
23HainanCSF2516420221026-7-(7)T. destructansOR961770OR981213OR973255AAA
23HainanCSF2516520221026-7-(8)T. destructansOR961771OR981214OR973256AAA
23HainanCSF2516620221026-7-(9)T. destructansOR961772OR981215OR973257AAA
23HainanCSF2516720221026-7-(10)T. destructansOR961773OR981216OR973258CAA
23HainanCSF2516820221026-7-(11)T. destructansOR961774OR981217OR973259CAA
23HainanCSF2531220221026-7-(12)T. epicoccoidesOR961775OR981218OR973260ACA
23HainanCSF2531320221026-7-(13)T. epicoccoidesOR961776OR981219OR973261ACA
23HainanCSF2531420221026-7-(14)T. epicoccoidesOR961777OR981220OR973262ACA
23HainanCSF2531520221026-7-(15)T. epicoccoidesOR961778OR981221OR973263DIA
23HainanCSF2531620221026-7-(16)T. epicoccoidesOR961779OR981222OR973264ACA
23HainanCSF25317 c20221026-7-(17)T. epicoccoidesOR961780OR981223OR973265AIA
24HainanCSF2514420221026-4-(1)T. destructansOR961781OR981224OR973266CAA
24HainanCSF2514520221026-4-(2)T. destructansOR961782OR981225OR973267CAA
24HainanCSF2514620221026-4-(3)T. destructansOR961783OR981226OR973268AAA
24HainanCSF2514720221026-4-(4)T. destructansOR961784OR981227OR973269AAA
24HainanCSF25292 c20221026-4-(5)T. epicoccoidesOR961785OR981228OR973270GGA
24HainanCSF25293 c20221026-4-(6)T. epicoccoidesOR961786OR981229OR973271AFA
24HainanCSF2529420221026-4-(7)T. epicoccoidesOR981230OR973272-EA
24HainanCSF25295 c20221026-4-(8)T. epicoccoidesOR961787OR981231OR973273AEA
24HainanCSF2529620221026-4-(9)T. epicoccoidesOR961788OR981232OR973274EAA
24HainanCSF2529720221026-4-(10)T. epicoccoidesOR961789OR981233OR973275DIA
25HainanCSF2514820221026-5-(1)T. destructansOR961790OR981234OR973276CAA
25HainanCSF2514920221026-5-(2)T. destructansOR961791OR981235OR973277AAA
25HainanCSF2515020221026-5-(3)T. destructansOR961792OR981236OR973278AAA
25HainanCSF2515120221026-5-(4)T. destructansOR961793OR981237OR973279CAA
25HainanCSF2515220221026-5-(5)T. destructansOR961794OR981238OR973280CAA
25HainanCSF2515320221026-5-(6)T. destructansOR961795OR981239OR973281AAA
25HainanCSF2515420221026-5-(7)T. destructansOR961796OR981240OR973282ACA
25HainanCSF2515520221026-5-(8)T. destructansOR961797OR981241OR973283CAA
25HainanCSF2515620221026-5-(9)T. destructansOR961798OR973284C-A
25HainanCSF2515720221026-5-(10)T. destructansOR961799OR981242OR973285AAA
25HainanCSF25299 c20221026-5-(11)T. epicoccoidesOR961800OR981243OR973286AEA
25HainanCSF2530020221026-5-(12)T. epicoccoidesOR961801OR981244OR973287AEA
25HainanCSF2530120221026-5-(13)T. epicoccoidesOR961802OR981245OR973288AIA
25HainanCSF25302 c20221026-5-(14)T. epicoccoidesOR961803OR981246OR973289AFA
25HainanCSF2530320221026-5-(15)T. epicoccoidesOR961804OR981247OR973290AAA
26HainanCSF25134 c20221026-2-(1)T. destructansOR961805OR981248OR973291CCA
26HainanCSF2513520221026-2-(2)T. destructansOR961806OR981249OR973292ACA
26HainanCSF2513620221026-2-(3)T. destructansOR961807OR981250OR973293ACA
26HainanCSF2528620221026-2-(4)T. epicoccoidesOR981251OR973294-EA
26HainanCSF2528720221026-2-(5)T. epicoccoidesOR961808OR981252OR973295CAA
26HainanCSF2528820221026-2-(6)T. epicoccoidesOR961809OR981253OR973296AAA
26HainanCSF2528920221026-2-(7)T. epicoccoidesOR981254OR973297-IA
26HainanCSF2529020221026-2-(8)T. epicoccoidesOR961810OR981255AE-
26HainanCSF2529120221026-2-(9)T. epicoccoidesOR981256OR973298-EA
27HainanCSF25137 c20221026-3-(1)T. destructansOR961811OR981257OR973299ACA
27HainanCSF2513820221026-3-(2)T. destructansOR961812OR981258OR973300CAA
27HainanCSF2513920221026-3-(3)T. destructansOR961813OR981259OR973301AAA
27HainanCSF2514020221026-3-(4)T. destructansOR961814OR981260OR973302AAA
27HainanCSF2514120221026-3-(5)T. destructansOR961815OR981261OR973303AAA
27HainanCSF2514220221026-3-(6)T. destructansOR961816OR981262OR973304CAA
27HainanCSF2514320221026-3-(7)T. destructansOR961817OR981263OR973305CAA
28HainanCSF2527620221026-1-(51)T. epicoccoidesOR961818OR981264OR973306EAA
28HainanCSF25277 c20221026-1-(52)T. epicoccoidesOR961819OR981265OR973307DEA
28HainanCSF2528020221026-1-(55)T. epicoccoidesOR961820OR981266OR973308BAA
28HainanCSF2528320221026-1-(58)T. epicoccoidesOR961821OR981267OR973309AAA
28HainanCSF2528420221026-1-(59)T. epicoccoidesOR961822OR981268OR973310CAA
29GuangdongCSF2561220230221-2-(1)T. destructansOR961823OR981269OR973311CAA
29GuangdongCSF2561320230221-2-(2)T. destructansOR961824OR981270OR973312CAA
29GuangdongCSF2561420230221-2-(3)T. destructansOR961825OR981271OR973313ACA
29GuangdongCSF2561520230221-2-(4)T. destructansOR961826OR981272OR973314CAA
29GuangdongCSF2561620230221-2-(5)T. destructansOR961827OR981273OR973315AAA
29GuangdongCSF2561720230221-2-(6)T. destructansOR961828OR981274OR973316AAA
29GuangdongCSF2561820230221-2-(7)T. destructansOR961829OR981275OR973317CAA
29GuangdongCSF2561920230221-2-(8)T. destructansOR961830OR981276OR973318CAA
29GuangdongCSF2562020230221-2-(9)T. destructansOR961831OR981277OR973319CAA
29GuangdongCSF2562120230221-2-(10)T. destructansOR961832OR981278OR973320ACA
29GuangdongCSF2562220230221-2-(11)T. destructansOR961833OR981279OR973321CAA
29GuangdongCSF2562320230221-2-(12)T. destructansOR961834OR981280OR973322AAA
29GuangdongCSF2552020230221-2-(20)T. epicoccoidesOR961835OR981281OR973323EAA
29GuangdongCSF2552120230221-2-(21)T. epicoccoidesOR961836OR981282OR973324ACA
29GuangdongCSF2552220230221-2-(22)T. epicoccoidesOR961837OR981283OR973325AAA
29GuangdongCSF2552320230221-2-(23)T. epicoccoidesOR961838OR981284OR973326EAA
29GuangdongCSF2552420230221-2-(25)T. epicoccoidesOR961839OR981285OR973327EAA
29GuangdongCSF2552520230221-2-(26)T. epicoccoidesOR961840OR981286OR973328EAA
30GuangdongCSF2559920230221-1-(1)T. destructansOR961841OR981287OR973329CAA
30GuangdongCSF2560020230221-1-(2)T. destructansOR961842OR981288OR973330AAA
30GuangdongCSF25601 c20230221-1-(3)T. destructansOR961843OR981289OR973331CCA
30GuangdongCSF2560220230221-1-(4)T. destructansOR961844OR981290OR973332AAA
30GuangdongCSF2560320230221-1-(5)T. destructansOR961845OR981291OR973333AAA
30GuangdongCSF2560420230221-1-(6)T. destructansOR961846OR981292OR973334AAA
30GuangdongCSF2560520230221-1-(7)T. destructansOR961847OR981293OR973335CAA
30GuangdongCSF2560620230221-1-(8)T. destructansOR961848OR981294OR973336AAA
30GuangdongCSF2560720230221-1-(9)T. destructansOR961849OR981295OR973337ACA
30GuangdongCSF2560820230221-1-(10)T. destructansOR961850OR981296OR973338AAA
30GuangdongCSF2560920230221-1-(11)T. destructansOR961851OR981297OR973339CAA
30GuangdongCSF2561020230221-1-(12)T. destructansOR961852OR981298OR973340AAA
30GuangdongCSF2561120230221-1-(14)T. destructansOR961853OR981299OR973341AAA
30GuangdongCSF2551220230221-1-(24)T. epicoccoidesOR961854OR981300OR973342ACA
30GuangdongCSF25513 c20230221-1-(26)T. epicoccoidesOR961855OR981301OR973343AIA
30GuangdongCSF2551420230221-1-(27)T. epicoccoidesOR961856OR981302OR973344ACA
30GuangdongCSF2551520230221-1-(28)T. epicoccoidesOR961857OR981303OR973345ACA
30GuangdongCSF2551620230221-1-(29)T. epicoccoidesOR961858OR981304OR973346AAA
30GuangdongCSF2551720230221-1-(30)T. epicoccoidesOR961859OR981305OR973347ACA
31GuangdongCSF2558720230220-3-(1)T. destructansOR961860OR981306OR973348AAA
31GuangdongCSF2558820230220-3-(2)T. destructansOR961861OR981307OR973349AAA
31GuangdongCSF2558920230220-3-(3)T. destructansOR961862OR981308OR973350AAA
31GuangdongCSF2559020230220-3-(4)T. destructansOR961863OR981309OR973351AAA
31GuangdongCSF2559120230220-3-(5)T. destructansOR961864OR981310OR973352AAA
31GuangdongCSF2559220230220-3-(6)T. destructansOR961865OR981311OR973353AAA
31GuangdongCSF2559320230220-3-(7)T. destructansOR961866OR981312OR973354AAA
31GuangdongCSF2559420230220-3-(8)T. destructansOR961867OR981313OR973355AAA
31GuangdongCSF2559520230220-3-(10)T. destructansOR961868OR981314OR973356AAA
31GuangdongCSF2559620230220-3-(11)T. destructansOR961869OR981315OR973357AAA
31GuangdongCSF2559720230220-3-(12)T. destructansOR961870OR981316OR973358CAA
31GuangdongCSF2559820230220-3-(13)T. destructansOR961871OR981317OR973359CAA
31GuangdongCSF2550020230220-3-(25)T. epicoccoidesOR961872OR981318OR973360ACA
31GuangdongCSF2550120230220-3-(26)T. epicoccoidesOR961873OR981319OR973361ACA
31GuangdongCSF2550220230220-3-(27)T. epicoccoidesOR961874OR981320OR973362AAA
31GuangdongCSF2550320230220-3-(28)T. epicoccoidesOR961875OR981321OR973363ACA
31GuangdongCSF2550420230220-3-(29)T. epicoccoidesOR961876OR981322OR973364ACA
31GuangdongCSF2550520230220-3-(30)T. epicoccoidesOR981323OR973365-EA
32GuangdongCSF2562420230221-3-(3)T. destructansOR961877OR981324OR973366CCA
32GuangdongCSF2562520230221-3-(4)T. destructansOR961878OR981325OR973367ACA
32GuangdongCSF2562620230221-3-(5)T. destructansOR961879OR981326OR973368AAA
32GuangdongCSF2562720230221-3-(6)T. destructansOR961880OR981327OR973369CAA
32GuangdongCSF2562820230221-3-(7)T. destructansOR961881OR981328OR973370AAA
32GuangdongCSF25629 c20230221-3-(8)T. destructansOR961882OR981329OR973371ACA
32GuangdongCSF2563020230221-3-(9)T. destructansOR961883OR981330OR973372AAA
32GuangdongCSF2563120230221-3-(10)T. destructansOR961884OR981331OR973373AAA
32GuangdongCSF2563220230221-3-(11)T. destructansOR961885OR981332OR973374AAA
32GuangdongCSF2563320230221-3-(12)T. destructansOR961886OR981333OR973375AAA
32GuangdongCSF2563420230221-3-(13)T. destructansOR961887OR981334OR973376CCA
32GuangdongCSF2563520230221-3-(14)T. destructansOR961888OR981335OR973377CAA
32GuangdongCSF2563620230221-3-(15)T. destructansOR961889OR981336OR973378AAA
32GuangdongCSF2553120230221-3-(18)T. epicoccoidesOR961890OR981337OR973379ACA
32GuangdongCSF2553220230221-3-(19)T. epicoccoidesOR981338OR973380-IA
32GuangdongCSF2553320230221-3-(20)T. epicoccoidesOR961891OR981339OR973381ACA
32GuangdongCSF2553420230221-3-(21)T. epicoccoidesOR981340OR973382-AA
32GuangdongCSF2553520230221-3-(22)T. epicoccoidesOR961892OR981341OR973383ACA
32GuangdongCSF2553620230221-3-(23)T. epicoccoidesOR981342OR973384-AA
33GuangdongCSF2557620230220-2-(1)T. destructansOR961893OR981343OR973385AAA
33GuangdongCSF2557720230220-2-(2)T. destructansOR961894OR981344OR973386AAA
33GuangdongCSF2557820230220-2-(3)T. destructansOR961895OR981345OR973387AAA
33GuangdongCSF2557920230220-2-(4)T. destructansOR961896OR981346OR973388AAA
33GuangdongCSF2558020230220-2-(5)T. destructansOR961897OR981347OR973389AAA
33GuangdongCSF2558120230220-2-(6)T. destructansOR961898OR981348OR973390CCA
33GuangdongCSF2558220230220-2-(7)T. destructansOR961899OR981349OR973391AAA
33GuangdongCSF2558320230220-2-(8)T. destructansOR961900OR981350OR973392CCA
33GuangdongCSF2558420230220-2-(9)T. destructansOR961901OR981351OR973393AAA
33GuangdongCSF2558520230220-2-(11)T. destructansOR961902OR981352OR973394AAA
33GuangdongCSF2558620230220-2-(12)T. destructansOR961903OR981353OR973395CAA
33GuangdongCSF2549720230220-2-(18)T. epicoccoidesOR961904OR981354OR973396EAA
33GuangdongCSF2549820230220-2-(19)T. epicoccoidesOR961905OR981355OR973397ECA
33GuangdongCSF2549920230220-2-(20)T. epicoccoidesOR961906OR981356OR973398EAA
34GuangdongCSF2556820230220-1-(2)T. destructansOR961907OR981357OR973399AAA
34GuangdongCSF2556920230220-1-(5)T. destructansOR961908OR981358OR973400CCA
34GuangdongCSF2557020230220-1-(7)T. destructansOR961909OR981359OR973401CAA
34GuangdongCSF2557120230220-1-(9)T. destructansOR961910OR981360OR973402AAA
34GuangdongCSF2557220230220-1-(10)T. destructansOR961911OR981361OR973403CCA
34GuangdongCSF2557320230220-1-(11)T. destructansOR961912OR981362OR973404CAA
34GuangdongCSF2557420230220-1-(14)T. destructansOR961913OR981363OR973405AAA
34GuangdongCSF25575 c20230220-1-(16)T. destructansOR961914OR981364OR973406AAA
34GuangdongCSF2549520230220-1-(17)T. epicoccoidesOR981365OR973407-EA
34GuangdongCSF2549620230220-1-(18)T. epicoccoidesOR981366OR973408-IA
35GuangdongCSF2537120230216-5-(20)T. epicoccoidesOR961915OR981367OR973409CAA
35GuangdongCSF25372 c20230216-5-(22)T. epicoccoidesOR961916OR981368OR973410ECA
35GuangdongCSF2537320230216-5-(24)T. epicoccoidesOR961917OR981369OR973411CAA
35GuangdongCSF25374 c20230216-5-(27)T. epicoccoidesOR961918OR981370OR973412EAA
35GuangdongCSF2537520230216-5-(30)T. epicoccoidesOR961919OR981371OR973413EAA
35GuangdongCSF2537620230216-5-(32)T. epicoccoidesOR961920OR981372OR973414ECA
36GuangdongCSF2535620230216-3-(9)T. epicoccoidesOR961921OR981373OR973415AAA
36GuangdongCSF2535720230216-3-(10)T. epicoccoidesOR961922OR981374OR973416EAA
36GuangdongCSF2535820230216-3-(12)T. epicoccoidesOR961923OR981375OR973417ECA
36GuangdongCSF2535920230216-3-(14)T. epicoccoidesOR961924OR981376OR973418EAA
36GuangdongCSF2536020230216-3-(15)T. epicoccoidesOR961925OR981377OR973419CAA
36GuangdongCSF2536120230216-3-(16)T. epicoccoidesOR961926OR981378OR973420ECA
37GuangdongCSF25367 c20230216-4-(1)T. epicoccoidesOR961927OR981379OR973421CCA
37GuangdongCSF25368 c20230216-4-(3)T. epicoccoidesOR961928OR981380OR973422BAA
37GuangdongCSF2536920230216-4-(4)T. epicoccoidesOR961929OR981381OR973423EAA
37GuangdongCSF2537020230216-4-(5)T. epicoccoidesOR961930OR981382OR973424EAA
38GuangdongCSF2534720230216-2-(10)T. epicoccoidesOR961931OR981383OR973425EAA
38GuangdongCSF2534820230216-2-(11)T. epicoccoidesOR961932OR981384OR973426AAA
38GuangdongCSF2534920230216-2-(12)T. epicoccoidesOR961933OR981385OR973427CAA
38GuangdongCSF2535020230216-2-(13)T. epicoccoidesOR961934OR981386OR973428AAA
38GuangdongCSF25351 c20230216-2-(14)T. epicoccoidesOR961935OR981387OR973429HAA
38GuangdongCSF2535220230216-2-(15)T. epicoccoidesOR961936OR981388OR973430AAA
39GuangdongCSF2532520230215-1-(1)T. epicoccoidesOR961937OR981389OR973431CCA
39GuangdongCSF25326 c20230215-1-(2)T. epicoccoidesOR961938OR981390OR973432CAA
39GuangdongCSF2532720230215-1-(3)T. epicoccoidesOR961939OR981391OR973433EAA
39GuangdongCSF2532820230215-1-(6)T. epicoccoidesOR961940OR981392OR973434ACA
39GuangdongCSF2532920230215-1-(7)T. epicoccoidesOR961941OR981393OR973435EAA
39GuangdongCSF2533020230215-1-(8)T. epicoccoidesOR961942OR981394OR973436EAA
40GuangdongCSF2533620230216-1-(11)T. epicoccoidesOR961943OR981395OR973437ECA
40GuangdongCSF2533720230216-1-(13)T. epicoccoidesOR961944OR981396OR973438ECA
40GuangdongCSF2533820230216-1-(15)T. epicoccoidesOR961945OR981397OR973439EAA
40GuangdongCSF2533920230216-1-(16)T. epicoccoidesOR961946OR981398OR973440AAA
40GuangdongCSF25340 c20230216-1-(17)T. epicoccoidesOR961947OR981399OR973441BCA
40GuangdongCSF2534120230216-1-(18)T. epicoccoidesOR961948OR981400OR973442EAA
41GuangdongCSF2554620230217-3-(1)T. destructansOR961949OR981401OR973443CCA
41GuangdongCSF25547 c20230217-3-(2)T. epicoccoidesOR961950OR981402OR973444XBA
41GuangdongCSF2554820230217-3-(6)T. destructansOR961951OR981403OR973445AAA
41GuangdongCSF2554920230217-3-(8)T. destructansOR961952OR981404OR973446CAA
41GuangdongCSF2555020230217-3-(13)T. destructansOR961953OR981405OR973447AAA
41GuangdongCSF2555120230217-3-(16)T. destructansOR961954OR981406OR973448AAA
41GuangdongCSF2555220230217-3-(17)T. destructansOR961955OR981407OR973449AAA
41GuangdongCSF2555320230217-3-(21)T. destructansOR961956OR981408OR973450CAA
41GuangdongCSF2555420230217-3-(24)T. destructansOR961957OR981409OR973451CCA
41GuangdongCSF2555520230217-3-(25)T. destructansOR961958OR981410OR973452CAA
41GuangdongCSF2555620230217-3-(30)T. destructansOR961959OR981411OR973453CAA
41GuangdongCSF25557 c20230217-3-(37)T. destructansOR961960OR981412OR973454CAA
41GuangdongCSF2539920230217-3-(51)T. epicoccoidesOR961961OR981413OR973455AAA
41GuangdongCSF2540020230217-3-(52)T. epicoccoidesOR961962OR981414OR973456AAA
41GuangdongCSF2540120230217-3-(53)T. epicoccoidesOR961963OR981415OR973457CAA
41GuangdongCSF2540220230217-3-(54)T. epicoccoidesOR961964OR981416OR973458ECA
41GuangdongCSF2540320230217-3-(55)T. epicoccoidesOR961965OR981417OR973459AAA
41GuangdongCSF2540420230217-3-(56)T. epicoccoidesOR961966OR981418OR973460ECA
42GuangdongCSF2555820230219-1-(5)T. destructansOR961967OR981419OR973461AAA
42GuangdongCSF2555920230219-1-(8)T. destructansOR961968OR981420OR973462AAA
42GuangdongCSF2556020230219-1-(9)T. destructansOR961969OR981421OR973463CAA
42GuangdongCSF2556120230219-1-(15)T. destructansOR961970OR981422OR973464AAA
42GuangdongCSF2556220230219-1-(17)T. destructansOR961971OR981423OR973465AAA
42GuangdongCSF2556320230219-1-(23)T. destructansOR961972OR981424OR973466CAA
42GuangdongCSF2556420230219-1-(25)T. destructansOR961973OR981425OR973467CAA
42GuangdongCSF2556520230219-1-(26)T. destructansOR961974OR981426OR973468CAA
42GuangdongCSF2556620230219-1-(27)T. destructansOR961975OR981427OR973469AAA
42GuangdongCSF2556720230219-1-(29)T. destructansOR961976OR981428OR973470CAA
43GuangdongCSF2539020230217-2-(18)T. epicoccoidesOR961977OR981429OR973471ECA
43GuangdongCSF2539120230217-2-(20)T. epicoccoidesOR961978OR981430OR973472AAA
43GuangdongCSF2539220230217-2-(21)T. epicoccoidesOR961979OR981431OR973473AAA
43GuangdongCSF2539320230217-2-(24)T. epicoccoidesOR961980OR981432OR973474EAA
43GuangdongCSF2539420230217-2-(25)T. epicoccoidesOR961981OR981433OR973475EAA
43GuangdongCSF2539520230217-2-(26)T. epicoccoidesOR961982OR981434OR973476EAA
44GuangdongCSF2537820230217-1-(13)T. epicoccoidesOR961983OR981435OR973477ECA
44GuangdongCSF2537920230217-1-(14)T. epicoccoidesOR961984OR981436OR973478CAA
44GuangdongCSF2538020230217-1-(15)T. epicoccoidesOR961985OR981437OR973479ECA
44GuangdongCSF2538120230217-1-(17)T. epicoccoidesOR961986OR981438OR973480EAA
44GuangdongCSF2538220230217-1-(18)T. epicoccoidesOR961987OR981439OR973481EAA
44GuangdongCSF2538320230217-1-(21)T. epicoccoidesOR961988OR981440OR973482EAA
45GuangdongCSF25436 c20230218-1-(6)T. epicoccoidesOR961989OR981441OR973483ACA
45GuangdongCSF2543720230218-1-(7)T. epicoccoidesOR961990OR981442OR973484EAA
45GuangdongCSF2543820230218-1-(8)T. epicoccoidesOR961991OR981443OR973485AAA
45GuangdongCSF2543920230218-1-(9)T. epicoccoidesOR961992OR981444OR973486EAA
45GuangdongCSF2544020230218-1-(10)T. epicoccoidesOR961993OR981445OR973487EAA
45GuangdongCSF2544120230218-1-(11)T. epicoccoidesOR961994OR981446OR973488BAA
46GuangdongCSF2541920230217-4-(3)T. epicoccoidesOR961995OR981447OR973489EAA
46GuangdongCSF2542020230217-4-(4)T. epicoccoidesOR961996OR981448OR973490AAA
46GuangdongCSF2542120230217-4-(5)T. epicoccoidesOR961997OR981449OR973491AAA
46GuangdongCSF2542220230217-4-(6)T. epicoccoidesOR961998OR981450OR973492ECA
46GuangdongCSF2542320230217-4-(7)T. epicoccoidesOR981451OR973493-CA
46GuangdongCSF2542420230217-4-(8)T. epicoccoidesOR961999OR981452OR973494EAA
47GuangdongCSF2545120230218-2-(7)T. epicoccoidesOR962000OR981453OR973495AAA
47GuangdongCSF2545220230218-2-(8)T. epicoccoidesOR962001OR981454OR973496EAA
47GuangdongCSF2545320230218-2-(9)T. epicoccoidesOR962002OR981455OR973497BAA
47GuangdongCSF2545420230218-2-(10)T. epicoccoidesOR962003OR981456OR973498AAA
47GuangdongCSF2545520230218-2-(11)T. epicoccoidesOR962004OR981457OR973499ECA
47GuangdongCSF2545620230218-2-(13)T. epicoccoidesOR962005OR981458OR973500ACA
48GuangdongCSF2546820230218-3-(12)T. epicoccoidesOR962006OR981459OR973501AAA
48GuangdongCSF2546920230218-3-(13)T. epicoccoidesOR962007OR981460OR973502ACA
48GuangdongCSF2547020230218-3-(14)T. epicoccoidesOR962008OR981461OR973503AAA
48GuangdongCSF2547120230218-3-(15)T. epicoccoidesOR962009OR981462OR973504ACA
48GuangdongCSF2547220230218-3-(16)T. epicoccoidesOR962010OR981463OR973505EAA
48GuangdongCSF2547320230218-3-(17)T. epicoccoidesOR962011OR981464OR973506EAA
49GuangdongCSF2548220230218-4-(2)T. epicoccoidesOR962012OR981465OR973507AAA
49GuangdongCSF2548320230218-4-(4)T. epicoccoidesOR962013OR981466OR973508EAA
49GuangdongCSF2548420230218-4-(5)T. epicoccoidesOR962014OR981467OR973509BAA
49GuangdongCSF2548520230218-4-(6)T. epicoccoidesOR962015OR981468OR973510EAA
49GuangdongCSF2548620230218-4-(7)T. epicoccoidesOR962016OR981469OR973511ACA
49GuangdongCSF2548720230218-4-(8)T. epicoccoidesOR962017OR981470OR973512EAA
50FujianCSF2580120230330-1-(21)T. epicoccoidesOR962018OR981471OR973513ACA
50FujianCSF2580220230330-1-(22)T. epicoccoidesOR962019OR981472OR973514EAA
50FujianCSF2580320230330-1-(23)T. epicoccoidesOR962020OR981473OR973515AAA
50FujianCSF2580420230330-1-(24)T. epicoccoidesOR962021OR981474OR973516AAA
50FujianCSF2580520230330-1-(25)T. epicoccoidesOR962022OR981475OR973517ECA
51FujianCSF25773 c20230328-1-(2)T. epicoccoidesOR962023OR981476OR973518DIA
51FujianCSF2577420230328-1-(5)T. epicoccoidesOR962024OR981477OR973519DIA
51FujianCSF2577520230328-1-(7)T. epicoccoidesOR962025OR981478OR973520DIA
51FujianCSF2577620230328-1-(8)T. epicoccoidesOR962026OR981479OR973521DIA
51FujianCSF2577720230328-1-(9)T. epicoccoidesOR962027OR981480OR973522ECA
51FujianCSF2577820230328-1-(11)T. epicoccoidesOR962028OR981481OR973523AAA
52FujianCSF2578220230329-1-(1)T. epicoccoidesOR981482OR973524-EA
52FujianCSF2578320230329-1-(2)T. epicoccoidesOR962029OR981483OR973525EAA
52FujianCSF2578420230329-1-(3)T. epicoccoidesOR962030OR981484OR973526EAA
52FujianCSF2578520230329-1-(4)T. epicoccoidesOR962031OR981485OR973527ACA
52FujianCSF2578620230329-1-(5)T. epicoccoidesOR981486OR973528-CA
52FujianCSF2578720230329-1-(6)T. epicoccoidesOR962032OR981487OR973529EAA
53FujianCSF2579020230329-2-(1)T. epicoccoidesOR962033OR981488OR973530DIA
53FujianCSF2579120230329-2-(4)T. epicoccoidesOR962034OR981489OR973531DIA
53FujianCSF2579220230329-2-(5)T. epicoccoidesOR962035OR981490OR973532DIA
53FujianCSF2579320230329-2-(6)T. epicoccoidesOR962036OR981491OR973533DIA
53FujianCSF2579420230329-2-(7)T. epicoccoidesOR981492OR973534-IA
53FujianCSF2579520230329-2-(8)T. epicoccoidesOR962037OR981493OR973535DIA
54FujianCSF2585020230331-3-(1)T. epicoccoidesOR962038OR981494OR973536CAA
54FujianCSF2585120230331-3-(2)T. epicoccoidesOR962039OR981495OR973537ECA
54FujianCSF2585220230331-3-(4)T. epicoccoidesOR962040OR981496OR973538EAA
54FujianCSF2585320230331-3-(5)T. epicoccoidesOR962041OR981497OR973539CAA
54FujianCSF2585420230331-3-(6)T. epicoccoidesOR962042OR981498OR973540CAA
54FujianCSF2585520230331-3-(7)T. epicoccoidesOR962043OR981499OR973541EAA
55FujianCSF25840 c20230331-2-(2)T. epicoccoidesOR962044OR981500OR973542BAA
55FujianCSF2584120230331-2-(3)T. epicoccoidesOR962045OR981501OR973543ECA
55FujianCSF2584220230331-2-(4)T. epicoccoidesOR962046OR981502OR973544EAA
55FujianCSF2584320230331-2-(5)T. epicoccoidesOR962047OR981503OR973545AAA
55FujianCSF2584420230331-2-(6)T. epicoccoidesOR962048OR981504OR973546AAA
55FujianCSF2584520230331-2-(9)T. epicoccoidesOR962049OR981505OR973547EAA
56FujianCSF2583020230331-1-(1)T. epicoccoidesOR962050OR981506OR973548ACA
56FujianCSF2583120230331-1-(2)T. epicoccoidesOR962051OR981507OR973549EAA
56FujianCSF2583220230331-1-(3)T. epicoccoidesOR962052OR981508OR973550BAA
56FujianCSF2583320230331-1-(5)T. epicoccoidesOR962053OR981509OR973551CCA
56FujianCSF2583420230331-1-(6)T. epicoccoidesOR962054OR981510OR973552EAA
56FujianCSF2583520230331-1-(9)T. epicoccoidesOR962055OR981511OR973553AAA
57FujianCSF2582020230330-3-(1)T. epicoccoidesOR962056OR981512OR973554EAA
57FujianCSF2582120230330-3-(2)T. epicoccoidesOR962057OR981513OR973555ECA
57FujianCSF2582220230330-3-(3)T. epicoccoidesOR962058OR981514OR973556CAA
57FujianCSF2582320230330-3-(4)T. epicoccoidesOR962059OR981515OR973557ECA
57FujianCSF2582420230330-3-(5)T. epicoccoidesOR962060OR981516OR973558EAA
57FujianCSF2582520230330-3-(6)T. epicoccoidesOR962061OR981517OR973559ECA
58FujianCSF2581020230330-2-(1)T. epicoccoidesOR962062OR981518OR973560AAA
58FujianCSF2581120230330-2-(3)T. epicoccoidesOR962063OR981519OR973561CCA
58FujianCSF2581220230330-2-(4)T. epicoccoidesOR962064OR981520OR973562CAA
58FujianCSF2581320230330-2-(5)T. epicoccoidesOR962065OR981521OR973563CCA
58FujianCSF2581420230330-2-(6)T. epicoccoidesOR962066OR981522OR973564EAA
58FujianCSF2581520230330-2-(8)T. epicoccoidesOR962067OR981523OR973565ACA
59FujianCSF2586020230401-1-(1)T. epicoccoidesOR962068OR981524OR973566AAA
59FujianCSF2586120230401-1-(2)T. epicoccoidesOR962069OR981525OR973567EAA
59FujianCSF2586220230401-1-(3)T. epicoccoidesOR962070OR981526OR973568AAA
59FujianCSF2586320230401-1-(4)T. epicoccoidesOR962071OR981527OR973569EAA
59FujianCSF2586420230401-1-(5)T. epicoccoidesOR962072OR981528OR973570EAA
59FujianCSF2586520230401-1-(7)T. epicoccoidesOR962073OR981529OR973571EAA
a Code of 59 sampling sites connecting to “Sampling Site No.” in Table 1. b CSF: Culture Collection located at Research Institute of Fasting-growing Trees (RIFT), Chinese Academy of Forestry, Zhanjiang, Guangdong Province, China. c Isolates used for phylogenetic analyses in this study. d Information associated with sample site and isolate, for example, “20230315-2-(2)” indicates sample number “20230315-2-(2)” and isolate from this sample; the sample number connecting to “Sample and Isolate Information” in Table 1. e ITS = internal transcribed spacer regions and intervening 5.8S nrRNA gene; tef1 = translation elongation factor 1-alpha; tub2 = β-tubulin. f “–” represents the relative locus that was not successfully amplified in this study. g Genotype within each Teratosphaeria species, determined by sequences of the ITS, tef1 and tub2 regions. The same letter among isolates from each species means they shared the same genotype; “-” means not available.
Sequences downloaded from the NCBI database and sequences generated in this study were aligned using MAFFT online v. 7 (http://mafft.cbrc.jp/alignment/server/ (accessed on 2 November 2023)) [50], with the iterative refinement method (FFT-NS-i setting). The alignments were further edited manually with MEGA v. 7.0 software [49] when necessary. Sequences of each of the ITS, tef1, and tub2 gene regions, as well as the combination of these three gene regions, were analyzed.
Maximum likelihood (ML) analyses were conducted for the three individual gene sequences of ITS, tef1, and tub2, as well as for a concatenated dataset of all three genes. ML analyses were performed with RaxML v. 8.2.4 on the CIPRES Science Gateway v. 3.3 [51], with default GTR substitution matrix and 1000 bootstrap replicates [52]. Phylogenetic trees were viewed using MEGA v. 7.0 [49]. Sequence data of one isolate of Staninwardia suttonii (CBS 120061) were used as the outgroup [30].

3. Results

3.1. Fungal Isolations

Diseased leaves with conidiomata of Mycosphaerellaceae and Teratosphaeriaceae were collected from 59 sites in five provinces in southern China (Table 1; Figure 2). Single conidia from the conidiomata on the diseased leaves were transferred to fresh 2% MEA for fungal isolation. These conidia exhibited the typical morphological characteristics of Teratosphaeria species. Two groups of fungi corresponding to the disease symptoms were observed. The conidia of the first group of fungi were generally brown, and straight to slightly curved in shape. The number of septa in the conidia ranged from one to seven; the majority of conidia had three to five septa (Figure 3). The conidia of the second group of fungi were light brown, variously curved, and rarely straight. The conidia had one to three septa; the majority of conidia had three septa (Figure 4). The conidia of both groups of fungi were base truncate and apex obtuse. The conidia of the first group of fungi were wider, straighter, and darker than those of the second group (Figure 3 and Figure 4). These two groups of fungi had the typical morphological characteristics of T. epicoccoides and T. destructans, respectively [43,53]. In total, 558 isolates were obtained from the 59 sites. Three to twenty isolates were obtained from each sampled site, depending on the number of samples collected and the morphological variations in the conidia on the diseased leaves (Table 1).
Both groups of fungi were isolated from plantations of E. urophylla, E. urophylla × E. grandis, E. urophylla × E. pellita and E. urophylla × E. tereticomis, and most especially from multiple genotypes of E. urophylla × E. grandis, which were widely planted in the sampled regions. In addition, the first group of fungi were also frequently observed on the majority of other Eucalyptus genotypes in the plantations, including species of E. camaldulensis, E. grandis, E. pellita and their hybrids with E. urophylla. T. destructans is limited to certain species of E. grandis, E. urophylla, E. tereticornis and their hybrids.

3.2. Multi-Gene Phylogenetic Analyses and Species Identification

The BLAST results indicated that the 558 isolates obtained and sequenced in this study were mainly categorized into two groups. These two groups of fungi were similar to T. epicoccoides (Group A) and T. destructans (Group B), respectively. Amplicons generated for the ITS, tef1, and tub2 gene regions of fungi similar to T. epicoccoides were approximately 500, 350, and 350 bp, respectively. The sequences of ITS, tef1, and tub2 gene regions of fungi similar to T. destructans were approximately 290, 250, and 350 bp, respectively. Sequences of two isolates for each genotype generated by the three genes were used in the analyses. Sequences of ex-type specimen strains and other strains of 29 Teratosphaeria species, including T. epicoccoides and T. destructans, closely related to isolates obtained in the current study, were downloaded from GenBank for sequence comparisons and phylogenetic analyses (Table 3).
Based on the phylogenetic analyses of the ITS, tef1, tub2, and the combined datasets, the isolates of two groups of fungi, Group A and Group B in this study, were most closely related to T. epicoccoides and T. destructans, respectively. The isolates of Group A were consistently grouped with, or close to, the ex-type isolate CMW 5348 of T. epicoccoides in each of the ITS, tef1, tub2, and the combined dataset trees (Figure 5, Figure 6, Figure 7 and Figure 8). Additionally, some isolates of Group A formed independent clades in each of the four phylogenetic trees (Figure 5, Figure 6, Figure 7 and Figure 8). This is consistent with the phylogenetic analysis results presented by Taole et al. [43]. Analysis of the sequence data of the three regions resulted in incongruent genealogies. There was no evidence of distinct species boundaries. Isolates of Group A were identified as T. epicoccoides.
In Group B, all isolates were grouped with ex-type isolate CBS 111370 of T. destructans in the tub2 tree (Figure 8). Additionally, some isolates of Group B formed independent clades in each of the ITS and tef1 phylogenetic trees. However, these isolates did not form consistently independent clades, nor were they supported by high bootstrap values in both the ITS and tef1 phylogenetic trees (Figure 6 and Figure 7). For example, isolates of genotypes CAA and CBA were grouped together and formed one independent clade with high bootstrap value (89%) in the ITS tree (Figure 6). These isolates were grouped with ex-type isolates CBS 111369 and CBS 111370 of T. destructans in the tef1 tree (Figure 7). The results suggest that these reflect intraspecific sequence differences rather than interspecies variation. Combining the phylogenetic analysis results of ITS, tef1, tub2 and the datasets (Figure 5, Figure 6, Figure 7 and Figure 8), the isolates in Group B were identified as T. destructans.

3.3. Distribution of Teratosphaeria Species

Based on the DNA sequence comparisons of ITS, tef1, and tub2 sequences, the 558 isolates obtained from 59 sampling sites in this study were identified as T. epicoccoides (312 isolates; 55.9%) and T. destructans (246 isolates, 44.1%). T. epicoccoides was isolated and identified in 56 (accounting 95%) sampling sites, and T. destructans was obtained from 27 (accounting 46%) sampling sites. These two species were all obtained from 24 (accounting for 41%) sampling sites (Figure 2).
Determined by ITS, tef1, and tub2 sequences, 21 genotypes were generated for the 291 T. epicoccoides isolates (the genotypes of 21 isolates were not clear because the sequences of three gene regions were not all obtained) (Table 4). Six genotypes were generated for the 242 T. destructans isolates (the genotypes of four isolates were not clear because the sequences of three gene regions were not all obtained) (Table 5). The ratios of the genotype number to the isolate number of T. epicoccoides and T. destructans were all highest in Hainan Province.

4. Discussion

In this study, systematical disease surveys were conducted to collect diseased Eucalyptus leaves with typical fruiting structures of Mycosphaerellaceae and Teratosphaeriaceae in the core Eucalyptus plantation regions in China. In total, 558 isolates were identified according to disease symptoms and morphological characteristics and were mainly based on DNA sequence comparisons of three gene regions. These fungi were identified as T. epicoccoides and T. destructans. The results of this study indicate that T. epicoccoides and T. destructans are widely distributed in the core Eucalyptus planting regions in southern China.
This study has clarified and expanded the geographic distribution of Teratosphaeria species associated with diseased Eucalyptus leaves in southern China. Teratosphaeria epicoccoides was initially described in 1992. It was indicated that this species is distributed in many countries and regions worldwide. The leaf specimens used for the initial description included a total of 25 species of Eucalyptus and Corymbia in Australia, Brazil, Argentina, Zambia, India, and Ethiopia [54]. Currently, T. epicoccoides is widely reported on Eucalyptus leaves globally [41,43]. Teratosphaeria destructans was initially reported and described in 1996 on the leaves of E. grandis in Indonesia, along with some other unknown Eucalyptus species [53]. Currently, T. destructans is reported in a global range, including countries in Africa such as South Africa, and countries in Asia such as China, Thailand, and East Timor [41,55]. In China, T. epicoccoides and T. destructans were both first isolated from leaves of E. urophylla in Guangdong Province in 2006 [13]. Prior to this study, the distribution reports of these two species in China were both limited to Guangdong Province [13,26]. The results of this study suggest that T. epicoccoides is distributed in areas that are majority-planted with Eucalyptus in southern China, and T. destructans is also widely distributed throughout large regions in this country.
DNA sequence comparisons were considered a reliable method for the classification and identification of Mycosphaerellaceae and Teratosphaeriaceae [23,30]. For species of Mycosphaerellaceae and Teratosphaeriaceae, traditional classification has primarily relied on morphological characteristics. When classifying based on morphological characteristics, the identification of species of Mycosphaerellaceae and Teratosphaeriaceae is influenced by the conserved morphological features of their respective sexual morphs [56,57,58]. Scientists have therefore shifted the focus of classifying and identifying these species mostly towards their asexual morphs [59,60,61]. However, similar asexual morphologies have also independently evolved from different taxa, adding further complexity to the taxonomy of these species [62]. In 2014, Quaedvlieg et al. proposed that the accurate classification of genera and species within Mycosphaerellaceae and Teratosphaeriaceae cannot be achieved solely through morphological comparisons. Instead, it requires the integration of molecular data [30]. The research results indicated that the ITS gene serves as a primary barcode locus to distinguish taxa in Mycosphaerella and Teratosphaeria associated with Eucalyptus leaf disease. The ITS gene is easily generated and has the most extensive dataset available; therefore, tef1, tub, or rpb2 represent useful secondary barcode loci [30]. In this study, species identification was primarily based on the comparison of three gene sequences of ITS, tef1, and tub2. These three gene sequences have been widely employed to differentiate both intra- and inter-specific variations among species in Teratosphaeriaceae [25,43,55].
To date, eight species of Mycosphaerellaceae and Teratosphaeriaceae isolated from Eucalyptus leaves in China have been identified based on DNA sequence comparisons. These species include Neoceratosperma yunnanensis, Pallidocercospora crystallina, Paramycosphaerella marksii, Pseudocercospora flavomarginata, Pse. gracilis, Pse. haiweiensis, Teratosphaeria destructans, and T. epicoccoides [26,27,29,30,63]. With the exception of two species of Teratosphaeria, the other six species reside in Mycosphaerellaceae. It is still unknown whether these eight species are all pathogenic to Eucalyptus in China because no pathogenicity tests have been conducted.
One shortcoming of this study is that the pathogenicity of the two identified Teratosphaeria species was not investigated. At present, on a global scale, methods for assessing the pathogenicity of Mycosphaerellaceae and Teratosphaeriaceae species isolated from diseased Eucalyptus leaves include spraying ascospore suspensions, conidial suspensions, hyphal fragment suspensions, or a mixture of spores and hyphal fragment suspensions onto Eucalyptus seedlings in controlled environments. Additional inoculation methods involve applying ascospore masses or lesions from diseased leaf areas onto Eucalyptus seedling leaves [44,57,64]. Conidial suspensions are considered to be a typical method for evaluating the pathogenicity of Mycosphaerellaceae and Teratosphaeriaceae species; however, this is not possible for species that do not sporulate sufficiently in culture. Very limited research has been conducted on the pathogenicity of T. destructans and T. epicoccoides on Eucalyptus. The Teratosphaeria isolates obtained in the current study failed to produce conidia on media. In order to test the pathogenicity of T. destructans and T. epicoccoides, it is vital to find a way to sufficiently induce the sporulation of these fungi in culture or find a new method to test their pathogenicity. For example, the hyphal fragment suspensions were replaced with conidial suspensions to test the pathogenicity of Calonectria pseudoreteaudii [65]. Hyphal fragment suspension may also be used to assess the pathogenicity of Teratosphaeria species, although this need to be evaluated. Previous research results indicated that T. epicoccoides should be indigenous to eastern Australia, and spread to western Australia and other regions of the world [41,66]. T. destructans is recognized as absent from Australia. The origin of T. destructans remains unknown, but it is likely to have originated in Indonesia or East Timor [41,67,68,69]. Research results support the hypothesis that T. epicoccoides and T. destructans are spread via the human-mediated movement of infected plants and seeds [41,66,70]. This suggests the need for much more stringent and more sophisticated biosecurity measures, such as the use of metabarcoding approaches to test seedlots and plant materials under quarantine [41,67,68].
The results of this study confirmed that both T. epicoccoides and T. destructans are dominant species on diseased Eucalyptus leaves in China. Both species are widely distributed in Eucalyptus plantations that are mainly distributed across regions of southern China. Although previous studies have indicated that T. epicoccoides and T. destructans are widely distributed on Eucalyptus leaves globally [41,44], research on these species on diseased Eucalyptus leaves specifically in China is limited. During the sampling process in the current study, we found that the severity caused by each species of T. epicoccoides and T. destructans on different genotypes of E. urophylla × E. grandis were different. Research results showed that significant differences in resistance exist among the six tested E. grandis × E. urophylla genotypes to the inoculated T. destructans [71]. It is suggested that breeding and selection of Eucalyptus tolerant/resistant species, hybrids and clones are needed for the future management of leaf diseases caused by Teratosphaeria species [41]. Future research should focus on exploring pathogenicity testing methods for T. epicoccoides and T. destructans and clarifying their pathogenic characteristics. This will guide the selection of disease-resistant Eucalyptus genotypes for these two widely distributed species.

5. Conclusions

This study has proven that both T. epicoccoides and T. destructans are dominant species and widely distributed on diseased Eucalyptus leaves in southern China; both T. epicoccoides and T. destructans were present in each of the five sampled provinces with multiple genotypes. These two species are not clonal in China. The genetic diversities of T. epicoccoides and T. destructans were high in the southern sampled province. The wider distribution, and higher genetic diversity than has previously been considered indicates that both T. epicoccoides and T. destructans should be considered seriously in future disease management schemes.

Author Contributions

Conceptualization, S.C.; Data curation, B.C., W.W. and S.C.; Formal analysis, W.W. and S.C.; Funding acquisition, S.C.; Investigation, B.C., W.W. and S.C.; Methodology, W.W. and S.C.; Project administration, S.C.; Resources, S.C.; Supervision, S.C.; Validation, W.W. and S.C.; Visualization, S.C.; Writing—original draft, S.C.; Writing—review and editing, B.C., W.W. and S.C. All authors have read and agreed to the published version of the manuscript.

Funding

This study was supported by the National Key R and D Program of China (China-South Africa Forestry Joint Research Centre Project; project No. 2018YFE0120900), the National Ten-Thousand Talents Program (Project No. W03070115), and the Guangdong Top Young Talents Program in China (Project No. 20171172).

Data Availability Statement

Data are contained within the article.

Acknowledgments

We thank Linqin Lu, Xueying Liang, Simin Xiang and Ying Liu (both at Research Institute of Fast-growing Trees, Chinese Academy of Forestry) for their assistance in collecting samples.

Conflicts of Interest

The authors declare no conflicts of interest.

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Figure 1. Disease symptoms associated with Teratosphaeria epicoccoides and T. destructans on Eucalyptus plantations in southern China: (A,B) trees in 2-year-old Eucalyptus urophylla × E. grandis plantations associated with T. epicoccoides and T. destructans. Leaves of the whole trees were infected and resulted in intense defoliation in the tree growth season; (C,D) typical leaf spot, vein delimitation, and chlorosis symptoms on leaves of E. urophylla × E. grandis associated with T. epicoccoides. New leaves on the top of shoots emerged after infection (C); (E,F) all leaves of 0.5-year-old E. urophylla × E. grandis trees in one plantation infected by T. destructans; (G,H) typical disease symptoms on E. urophylla × E. grandis leaves caused by T. epicoccoides (G) and T. destructans (H); (I,J) leaf blighted after infection by T. destructans; (K,L) heavy sporulation of T. epicoccoides; (M,N) water-soaked and chlorosis symptoms caused by T. destructans on the adaxial (M) and abaxial (N) leaf surface; and (OR) Four E. urophylla × E. grandis hybrid genotypes exhibiting chlorosis and leaf spot caused by T. destructans.
Figure 1. Disease symptoms associated with Teratosphaeria epicoccoides and T. destructans on Eucalyptus plantations in southern China: (A,B) trees in 2-year-old Eucalyptus urophylla × E. grandis plantations associated with T. epicoccoides and T. destructans. Leaves of the whole trees were infected and resulted in intense defoliation in the tree growth season; (C,D) typical leaf spot, vein delimitation, and chlorosis symptoms on leaves of E. urophylla × E. grandis associated with T. epicoccoides. New leaves on the top of shoots emerged after infection (C); (E,F) all leaves of 0.5-year-old E. urophylla × E. grandis trees in one plantation infected by T. destructans; (G,H) typical disease symptoms on E. urophylla × E. grandis leaves caused by T. epicoccoides (G) and T. destructans (H); (I,J) leaf blighted after infection by T. destructans; (K,L) heavy sporulation of T. epicoccoides; (M,N) water-soaked and chlorosis symptoms caused by T. destructans on the adaxial (M) and abaxial (N) leaf surface; and (OR) Four E. urophylla × E. grandis hybrid genotypes exhibiting chlorosis and leaf spot caused by T. destructans.
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Figure 2. Map showing the 59 sites in the five provinces in China where the diseased leaf samples were collected, and the Teratosphaeria species identified in each site.
Figure 2. Map showing the 59 sites in the five provinces in China where the diseased leaf samples were collected, and the Teratosphaeria species identified in each site.
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Figure 3. Morphological features of Teratosphaeria epicoccoides: (AD) slightly curved conidia with septa from different Eucalyptus trees. (EJ) Conidia with three to six septa: three septa (E,F); four septa (G,H); five septa (I); and six septa (J).
Figure 3. Morphological features of Teratosphaeria epicoccoides: (AD) slightly curved conidia with septa from different Eucalyptus trees. (EJ) Conidia with three to six septa: three septa (E,F); four septa (G,H); five septa (I); and six septa (J).
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Figure 4. Morphological features of Teratosphaeria destructans: (AF) curved and occasionally straight conidia with septa from different Eucalyptus trees. (GK) Conidia with one to three septa: one septum (G); two septa (H,I); and three septa (J,K).
Figure 4. Morphological features of Teratosphaeria destructans: (AF) curved and occasionally straight conidia with septa from different Eucalyptus trees. (GK) Conidia with one to three septa: one septum (G); two septa (H,I); and three septa (J,K).
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Figure 5. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the combined dataset of ITS, tef1, and tub2 in these three gene regions. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
Figure 5. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the combined dataset of ITS, tef1, and tub2 in these three gene regions. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
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Figure 6. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the dataset of the ITS region. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
Figure 6. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the dataset of the ITS region. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
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Figure 7. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the dataset of the tef1 region. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
Figure 7. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the dataset of the tef1 region. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
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Figure 8. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the dataset of the tub2 region. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
Figure 8. Phylogenetic tree obtained from the maximum likelihood (ML) analysis of the dataset of the tub2 region. Bootstrap values ≥ 75% from the ML analysis are indicated at nodes. Isolates reported in this study are highlighted in blue.
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Table 1. Location details, collection information, and Eucalyptus tree plantation species of diseased leaf samples collected from 59 sites in five provinces.
Table 1. Location details, collection information, and Eucalyptus tree plantation species of diseased leaf samples collected from 59 sites in five provinces.
Sampling Site No. aSample and Isolate Information bProvinceLocation DetailsGPS InformationHostsCollectorIdentified Teratosphaeria spp.Sequenced Isolate NumberIdentified
Isolate Number of T. epicoccoides
Identified Isolate Number of T. destructans
120230315-2YunnanXin Village, Yongping Town, Jinggu County, Puer Region, Yunnan23°19′44.6052″ N, 100°21′40.014″ E2-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1477
220230315-1YunnanHedong Village, Weiyuan Town, Jinggu County, Puer Region, Yunnan23°30′52.0056″ N, 100°40′52.4568″ E1-year-old E. urophyllaB.Y. Chen and L.Q. LuT. epicoccoides and T. destructans16214
320230314-2YunnanBaomu Village, Fengshan Town, Jinggu County, Puer Region, Yunnan23°43′47.6904″ N, 100°50′40.3008″ E2-year-old E. urophylla × E. tereticomisB.Y. Chen and L.Q. LuT. epicoccoides660
420230314-1YunnanXin Village, Anban Town, Zhenyuan County, Puer Region, Yunnan23°53′15.0918″ N, 100°55′25.1508″ E3-year-old E. urophylla × E. pellitaB.Y. Chen and L.Q. LuT. destructans303
520230315-3YunnanDawangtian Village, Ninger Town, Ninger County, Puer Region, Yunnan23°9′51.0228″ N, 100°59′48.1596″ E1-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1459
620230316-2YunnanLongjing Village, Gejiu County, Honghe Region, Yunnan23°25′4.7496″ N, 103°14′21.9012″ E2-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
720230317-1YunnanChachang Village, Yangliujing Town, Guangnan County, Wenshan Region, Yunnan23°56′26.412″ N, 105°15′38.9916″ E2-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
820230318-1YunnanAdministration center of Xinhua Town, Funing County, Wenshan Region, Yunnan23°36′43.11″ N, 105°37′7.1256″ E2-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
920230318-2YunnanPodi Village, Xinhua Town, Funing County, Wenshan Region, Yunnan23°34′57.3564″ N, 105°34′34.7016″ E1-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
1020230318-3YunnanNahong Village, Zhesang Town, Funing County, Wenshan Region, Yunnan23°44′40.1316″ N, 105°57′12.204″ E1-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
1120230319-1YunnanZhening Village, Boai Town, Funing County, Wenshan Region, Yunnan23°49′53.4504″ N, 106°1′1.4196″ E2-year-old E. urophylla × E. tereticomisB.Y. Chen and L.Q. LuT. epicoccoides550
1220220703-1GuangxiXichang Village, Liuqiao Town, Fusui County, Chongzuo Region, Guangxi22°17′59.0496″ N, 107°43′39.936″ E2-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1275
1320220703-3GuangxiJiucheng Village, Dongmen Town, Fusui County, Chongzuo Region, Guangxi22°19′18.4152″ N, 107°47′24.9792″ E0.5-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1578
1420220703-2GuangxiNamengxin Village, Dongmen Town, Fusui County, Chongzuo Region, Guangxi22°20′39.4476″ N, 107°52′20.9568″ E2-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1367
1520220703-4GuangxiChongwen Village, Dazhi Town, Qinbei District, Qinzhou Region, Guangxi22°1′52.8816″ N, 108°21′27.9576″ E0.5-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1028
1620220702-3GuangxiYouxing Village, Dongchang Town, Qinnan District, Qinzhou Region, Guangxi21°53′7.4832″ N, 108°46′15.3516″ E0.5-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans14311
1720220702-2GuangxiBengtang Village, Nali Town, Qinnan District, Qinzhou Region, Guangxi21°51′37.368″ N, 108°55′57.648″ E1-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1459
1820220702-1GuangxiDama Village, Nali Town, Qinnan District, Qinzhou Region, Guangxi21°50′39.5124″ N, 108°55′55.3404″ E0.5-year-old E. urophylla × E. pellitaS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1486
1920220704-1GuangxiChezouling Village, Fucheng Town, Yinhai District, Beihai Region, Guangxi21°38′8.7252″ N, 109°17′51.4644″ E0.5-year-old E. urophylla × E. grandisS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans15510
2020220704-2GuangxiWuliu Village, Shankou Town, Hepu County, Beihai Region, Guangxi21°33′10.3248″ N, 109°42′43.2324″ E1-year-old E. urophylla × E. pellitaS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans20614
2120220704-3GuangxiGaopo Village, Shankou Town, Hepu County, Beihai Region, Guangxi21°34′3.9792″ N, 109°43′8.6304″ E2-year-old E. urophyllaS.F. Chen, W.X. Wu, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans16610
2220221026-6HainanAdministration center of Dongying Town, Lingao County, Hainan19°57′58.788″ N, 109°38′43.206″ E2-year-old E. urophylla × E. grandisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides330
2320221026-7HainanWenshan Village, Dongying Town, Lingao County, Hainan19°58′36.4656″ N, 109°38′53.6352″ E1-year-old E. urophylla × E. grandisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans17611
2420221026-4HainanMeisheng Village, Lincheng Town, Lingao County, Hainan19°46′16.644″ N, 109°41′31.74″ E2-year-old E. urophylla × E. grandisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1064
2520221026-5HainanLanluo Village, Lincheng Town, Lingao County, Hainan19°47′49.0452″ N, 109°41′8.7324″ E2 to 3-year-old E. urophylla × E. tereticomisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans15510
2620221026-2HainanDunxiang Village, Jialai Town, Lingao County, Hainan19°43′34.8276″ N, 109°42′52.1712″ E2-year-old E. urophylla × E. grandisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans963
2720221026-3HainanDuolang Village, Duowen Town, Lingao County, Hainan19°45′45.1548″ N, 109°44′28.518″ E2-year-old E. urophylla × E. tereticomisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. destructans707
2820221026-1HainanSongbai Village, Huangtong Town, Lingao County, Hainan19°47′41.46″ N, 109°49′52.7196″ E1-year-old E. urophylla × E. grandisS.F. Chen, Y. Liu, X.Y. Liang, S.M. Xiang, B.Y. Chen and L.Q. LuT. epicoccoides550
2920230221-2GuangdongFanchang Village, Longmen Town, Leizhou County, Zhanjiang Region, Guangdong20°40′3.018″ N, 110°1′50.358″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans18612
3020230221-1GuangdongNaqi Village, Chengbei Town, Xuwen County, Zhanjiang Region, Guangdong20°20′49.56″ N, 110°9′58.5864″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans19613
3120230220-3GuangdongHoukeng Village, Chengyue Town, Leizhou County, Zhanjiang Region, Guangdong21°7′53.886″ N, 110°6′4.932″ E2-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans18612
3220230221-3GuangdongLizhikeng Village, Shicheng Town, Lianjiang County, Zhanjiang Region, Guangdong21°31′37.7292″ N, 110°16′12.648″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans19613
3320230220-2GuangdongXiachen Village, Rudong Town, Yangxi County, Yangjiang Region, Guangdong21°36′43.29″ N, 111°26′23.118″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans14311
3420230220-1GuangdongLi Village, Chengcun Town, Yangxi County, Yangjiang Region, Guangdong21°49′47.5284″ N, 111°43′3.8964″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans1028
3520230216-5GuangdongXiadaidong Village, Huilong Town, Deqing County, Zhaoqing Region, Guangdong23°11′35.2032″ N, 111°41′21.1596″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
3620230216-3GuangdongDaxintang Village, Helang Town, Yangchun County, Yangjiang Region, Guangdong22°34′14.4336″ N, 111°51′53.928″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
3720230216-4GuangdongXin Village, Helang Town, Yangchun County, Yangjiang Region, Guangdong22°33′32.3748″ N, 111°51′22.4568″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides440
3820230216-2GuangdongTangxia Village, Songbai Town, Yangchun County, Yangjiang Region, Guangdong22°27′23.958″ N, 111°53′30.9192″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
3920230215-1GuangdongXin Village, Shiwang Town, Yangchun County, Yangjiang Region, Guangdong22°33′2.6928″ N, 111°57′34.7616″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4020230216-1GuangdongShuizhai Village, Chunwan Town, Yangchun County, Yangjiang Region, Guangdong22°25′8.1876″ N, 111°56′20.4252″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4120230217-3GuangdongFengji Village, Lixi Town, Yingde County, Qingyuan Region, Guangdong23°55′21.4824″ N, 113°10′20.4816″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides and T. destructans18711
4220230219-1GuangdongKengwei Village, Feilaixia Town, Qingcheng District, Qingyuan Region, Guangdong23°53′2.004″ N, 113°10′4.2456″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. destructans10010
4320230217-2GuangdongXikeng Village, Feilaixia Town, Qingcheng District, Qingyuan Region, Guangdong23°50′40.7112″ N, 113°9′38.2932″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4420230217-1GuangdongDonger Village, Dongcheng Subdistrict, Qingcheng District, Qingyuan Region, Guangdong23°45′27.1476″ N, 113°8′16.656″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4520230218-1GuangdongHuangwuxin Village, Maba Town, Qujiang District, Shaoguan Region, Guangdong24°37′49.3284″ N, 113°35′10.8384″ E2-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4620230217-4GuangdongHeping Village, Wangbu Town, Yingde County, Qingyuan Region, Guangdong24°11′49.0884″ N, 113°28′19.1424″ E2-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4720230218-2GuangdongXinzouwu Village, Wushi Town, Qujiang District, Shaoguan Region, Guangdong24°36′12.618″ N, 113°38′22.0128″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4820230218-3GuangdongYiwu Village, Datang Town, Qujiang District, Shaoguan Region, Guangdong24°43′37.956″ N, 113°42′49.9536″ E1-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
4920230218-4GuangdongXin Village, Daqiao Town, Renhua County, Shaoguan Region, Guangdong24°55′28.0596″ N, 113°46′30.2232″ E2-year-old E. urophylla × E. grandisW.X. Wu, X.Y. Liang, B.Y. Chen and L.Q. LuT. epicoccoides660
5020230330-1FujianQing Village, Ansha Town, Yongan County, Sanming Region, Fujian25°59′56.4864″ N, 117°6′47.772″ E2-year-old E. urophylla × E. pellitaB.Y. Chen and L.Q. LuT. epicoccoides550
5120230328-1FujianZhanglin Village, Caoyuan Town, Yongan County, Sanming Region, Fujian26°1′34.122″ N, 117°18′6.5556″ E2-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
5220230329-1FujianLinggan Village, Dahu Town, Yongan County, Sanming Region, Fujian26°4′45.6024″ N, 117°19′15.186″ E7-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
5320230329-2FujianWenbeixin Village, Caoyuan Town, Yongan County, Sanming Region, Fujian26°0′45.684″ N, 117°18′44.964″ E1-year-old E. urophylla × E. pellitaB.Y. Chen and L.Q. LuT. epicoccoides660
5420230331-3FujianHekeng Village, Guantian Town, Zhangping County, Longyan Region, Fujian25°1′7.4604″ N, 117°29′14.9388″ E2-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
5520230331-2FujianXipo Village, Hulin Town, Huaan County, Zhangzhou Region, Fujian25°7′1.6356″ N, 117°32′59.4276″ E1-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
5620230331-1FujianShangxue Village, Huafeng Town, Huaan County, Zhangzhou Region, Fujian24°57′58.5504″ N, 117°34′0.5592″ E3-year-old E. urophylla × E. pellitaB.Y. Chen and L.Q. LuT. epicoccoides660
5720230330-3FujianDakeng Village, Shajian Town, Huaan County, Zhangzhou Region, Fujian24°45′37.134″ N, 117°35′51.2052″ E1-year-old E. urophylla × E. grandisB.Y. Chen and L.Q. LuT. epicoccoides660
5820230330-2FujianXiawenkeng Village, Yanxi Town, Changtai District, Zhangzhou Region, Fujian24°45′43.3476″ N, 117°48′4.986″ E2-year-old E. urophylla × E. tereticomisB.Y. Chen and L.Q. LuT. epicoccoides660
5920230401-1FujianDudong Village, Changtai District, Zhangzhou Region, Fujian24°37′52.3956″ N, 117°42′12.3624″ E2-year-old E. urophylla × E. pellitaB.Y. Chen and L.Q. LuT. epicoccoides660
a Code of 59 sampling sites connecting to “Sampling Site No.” in Table 2. b Information associated with sample site and isolate, for example, “20230315-2” indicates sampling site “20230315-2” and isolate from this site; the sampling site number connecting to “Sample and Isolate Information” in Table 2.
Table 3. Isolates from other studies used in phylogenetic analyses in this study.
Table 3. Isolates from other studies used in phylogenetic analyses in this study.
SpeciesIsolate No. aTypeHostsLocationCollectorGenBank Accession No. bReferences or Source of Data
ITStef1tub2
Teratosphaeria aurantiaCBS 125243 = MUCC 668ex-typeEucalyptus grandisQueensland, AustraliaG. WhyteKF901561N/A cKF902984[30]
T. biformisCBS 124578 = MUCC 693ex-typeEucalyptus globulusQueensland, AustraliaG. WhyteKF901564KF903287KF902987[30]
T. blakelyiCBS 120089 = CPC 12837ex-typeEucalyptus blakelyiNew South Wales, AustraliaB.A. SummerellKF901565KF903288KF902988[30]
T. callophyllaeCBS 124584 = MUCC 700ex-typeCorymbia calophyllaWestern Australia, AustraliaK. TaylorKF901566KF903289FJ532003[23,30]
T. considenianaeCBS 120087 = CPC 12940ex-typeEucalyptus considenianaNew South Wales, AustraliaB.A. SummerellDQ923527N/AFJ952510[23,30]
CPC 13032unknownEucalyptus sp.New South Wales, AustraliaB.A. SummerellKF901567KF903291KF902990[30]
T. corymbiaeCBS 120495 = DAR 77445ex-typeCorymbia maculataNew South Wales, AustraliaA.J. CarnegieEF011657N/AFJ532005[23]
CBS 124988 = CPC 13125unknownCorymbia henryiNew South Wales, AustraliaA.J. CarnegieKF901569KF903293KF902992[30]
T. crispataCBS 130523ex-typeEucalyptus bridgesianaNew South Wales, AustraliaA.J. CarnegieGQ890348N/AN/A[23,30]
T. crypticaCBS 145895 = CPC 13839ex-epitypeEucalyptus globulusAustraliaI.W. SmithKF901572KF903298KF902997[23,30]
T. destructansCBS 111369 = CMW 5219 = CPC 1366ex-typeEucalyptus grandisIndonesiaM.J. WingfieldDQ267595DQ235113N/A[23]
CBS 111370 = CPC 1368ex-typeEucalyptus grandisIndonesiaM.J. WingfieldKF901574KF903301KF903000[23,30]
T. epicoccoidesCMW 5348 = CPC 1346ex-typeEucalyptus sp.IndonesiaM.J. WingfieldDQ239972DQ240170DQ240117[23]
CBS 119973unknownEucalyptus pellitaVietnamT.I. BurgessKF901784KF903359KF903055[30]
CPC 12218unknownEucalyptus sp.IndonesiaM.J. WingfieldKF901664KF903357KF903054[30]
T. eucalyptiCPC 12552not typeEucalyptus nitensTasmania, AustraliaC. MohammedKF901576KF903303KF903002[30]
MUCC 623not typeEucalyptus nitensNew South Wales, AustraliaA.J. CarnegieFJ793255EU101623EU101566[25]
T. foliensisCBS 124581 = MUCC 670ex-typeEucalyptus globulusNew South Wales, AustraliaS. CollinsKF901580KF903311KF903009[30]
T. gauchensisCBS 120303 = CMW 17331ex-typeEucalyptus grandisUruguayM.J. WingfieldKF901790KF903315KF903013[30]
CBS 120304 = CMW 17332ex-typeEucalyptus grandisUruguayM.J. WingfieldKF901789KF903314KF903012[30]
T. juvenalisCBS 110906 = CMW 13347ex-typeEucalyptus cladocalyxSouth AfricaP.W. CrousKF901730N/AN/A[30]
CBS 111149unknownEucalyptus cladocalyxSouth AfricaP.W. CrousKF901670KF903317KF903015[30]
T. majorizuluensisCBS 120040 = CPC 12712ex-typeEucalyptus botryoidesNew South Wales, AustraliaB.A. SummerellKF901581KF903319KF903017[30]
T. mollerianaCBS 111164 = CMW 4940 = CPC 1214ex-typeEucalyptus globulusPortugalS. McCraeKF901692KF903324KF903021[30]
CBS 111165 = CPC 1215ex-typeEucalyptus globulusPortugalS. McCraeKF901693KF903325KF903022[30]
T. novaehollandiaeBRIP 59486ex-typeEucalyptus camaldulensisWestern Australia, AustraliaA. MaxwellKT972281KT972345KT972313[25]
BRIP 59487not typeEucalyptus camaldulensisWestern Australia, AustraliaA. MaxwellKT972282KT972346KT972314[25]
T. nubilosaCBS 116005 = CMW 3282 = CPC 937ex-epitypeEucalyptus globulusVictoria, AustraliaA.J. CarnegieKF901686KF903336KF903033[23,30]
CPC 13844not typeEucalyptus globulusAustraliaI.W. SmithKF901590KF903344KF903041[30]
T. ovataCBS 124052 = CPC 14632unknownEucalyptus phoeniceaNew South Wales, AustraliaB.A. SummerellKF901591KF903345KF903042[30]
T. pseudoeucalyptiCBS 124577 = MUCC 607ex-typeEucalyptus grandis × E. camaldulensisQueensland, AustraliaG.S. PeggKF901593KF903349KF903046[30]
T. pseudonubilosaCBS 135621 = CMW 30745ex-typeEucalyptus globulusVictoria, AustraliaG. PérezHQ130818N/AHQ131318[23]
CBS 135620 = CMW 30723link to paratypeEucalyptus globulusWestern Australia, AustraliaG. PérezHQ130817N/AHQ131317[23]
T. rubidaeCBS 124579 = MUCC 658ex-typeCorymbia calophyllaWestern Australia, AustraliaP.A. BarberKF901596KF903352KF903049[30]
T. stellenboschianaCBS 124989 = CPC 13767unknownEucalyptus punctataSouth AfricaP.W. Crous and G. BillsKF901732KF903355KF903052[30]
T. syncarpiaeCBS 121160 = DAR 77433ex-typeSyncarpia glomuliferaNew South Wales, AustraliaA.J. Carnegie and M.J. WingfieldKF901598KF903360KF903056[30]
T. tiwianaCBS 141549 = BRIP 63496ex-typeEucalyptus urophylla hybridsTiwi Island, AustraliaT.I. BurgessKT972297KT972362 KT972330 [25]
CBS 141550 = BRIP 63497not typeEucalyptus urophylla hybridsTiwi Island, AustraliaT.I. BurgessKT972305KT972369 KT972337[25]
T. toledanaCBS 113313 = CMW 14457ex-typeEucalyptus sp.SpainP.W. CrousKF901734KF903361KF903058[30]
CBS 115513 = CPC 10840unknownEucalyptus sp.SpainP.W. Crous and G. BillsKF901600KF903362KF903059[30]
T. verrucosaCBS 113621 = CPC 42ex-typeEucalyptus cladocalyxSouth AfricaP.W. CrousKF901645KF903365KF903062[30]
CPC 12949unknownEucalyptus sp.South AfricaP.W. CrousKF901768KF903364KF903061[30]
T. viscidaCBS 121157 = MUCC 453ex-typeEucalyptus grandisMareeba, AustraliaT.I. BurgessEF031472EF031496 EF031484 [25]
CBS 121156 = MUCC 452not typeEucalyptus grandisMareeba, AustraliaT.I. BurgessEF031471EF031495 EF031483[25]
T. zuluensisCBS 120301 = CMW 17321ex-epitypeEucalyptus grandisSouth AfricaM.J. WingfieldKF901735KF903368KF903064[30]
CBS 120302 = CMW 17322ex-epitypeEucalyptus grandisSouth AfricaM.J. WingfieldKF901736KF903369KF903065[30]
Staninwardia suttoniiCBS 120061 = CPC 13055ex-typeEucalyptus robustaAustraliaB.A. SummerellKF901552KF903270KF902974[30]
a BRIP: fungal collection of Queensland Plant Pathology Herbarium (BRIP), Brisbane, Queensland, Australia; CBS: Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands; CMW: Culture collection of the Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa; CPC: Pedro Crous working collection housed at Westerdijk Fungal Biodiversity Institute; DAR: Plant Pathology Herbarium, Orange Agricultural Institute, Forest Road, Orange. NSW 2800, Australia; MUCC: Murdoch University Culture Collection, Murdoch, Australia. b ITS = internal transcribed spacer regions and intervening 5.8S nrRNA gene; tef1 = translation elongation factor 1-alpha gene; tub2 = β-tubulin gene. c N/A: information not available.
Table 4. Isolate numbers of each genotype of T. epicoccoides in the Eucalyptus plantations in each of the five provinces.
Table 4. Isolate numbers of each genotype of T. epicoccoides in the Eucalyptus plantations in each of the five provinces.
Genotype aYunnanGuangxiGuangdongHainanFujianFive Provinces
AAA195213957
ABA120003
ACA513184444
AEA010304
AFA010203
AHA010001
AIA001203
BAA014128
BCA001001
CAA3272519
CBA010001
CCA012036
DEA000101
DHA010001
DIA6102918
DJA020002
EAA16113531782
ECA46142733
FCA100001
GGA010102
HAA001001
Number of Genotype8161012821
Number of Isolate55501042656291
Ratio of Number of Genotype to Number of Isolate0.150.320.0960.460.140.072
a The genotype was determined by ITS-tef1-tub2 gene sequences.
Table 5. Isolate numbers of each genotype of T. destructans in the Eucalyptus plantations in each of the five provinces.
Table 5. Isolate numbers of each genotype of T. destructans in the Eucalyptus plantations in each of the five provinces.
Genotype aYunnanGuangxiGuangdongHainanFujianFive Provinces
AAA323749140132
ACA0154010
BAA100001
CAA0452715087
CBA010001
CCA0191011
Number of Genotype254406
Number of Isolate338590340242
Ratio of Number of Genotype to Number of Isolate0.0610.0590.0440.12N/A b0.025
a The genotype was determined by ITS-tef1-tub2 gene sequences. b N/A indicates not available.
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Chen, B.; Wu, W.; Chen, S. Wide Distribution of Teratosphaeria epicoccoides and T. destructans Associated with Diseased Eucalyptus Leaves in Plantations in Southern China. Microorganisms 2024, 12, 129. https://doi.org/10.3390/microorganisms12010129

AMA Style

Chen B, Wu W, Chen S. Wide Distribution of Teratosphaeria epicoccoides and T. destructans Associated with Diseased Eucalyptus Leaves in Plantations in Southern China. Microorganisms. 2024; 12(1):129. https://doi.org/10.3390/microorganisms12010129

Chicago/Turabian Style

Chen, Bingyin, Wenxia Wu, and Shuaifei Chen. 2024. "Wide Distribution of Teratosphaeria epicoccoides and T. destructans Associated with Diseased Eucalyptus Leaves in Plantations in Southern China" Microorganisms 12, no. 1: 129. https://doi.org/10.3390/microorganisms12010129

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