Research

12 pages, 2406 KiB

Open AccessArticle

Analysis of Fungal Diversity before and after Discoloration of Rubberwood in Xishuangbanna

by Susu Yang, Xiaolong Wu, Lin Liu, Yan Yan, Jian Qiu and Lei Qin

Diversity 2023, 15(4), 471; https://doi.org/10.3390/d15040471 - 23 Mar 2023

Cited by 1 | Viewed by 1195

The discoloration problem of rubber wood caused by the discoloration fungi has caused the degradation of rubber wood and greatly reduced its economic value, and the prevention and control of rubber wood discoloration have become the top priority of basic research on rubber [...] Read more.

The discoloration problem of rubber wood caused by the discoloration fungi has caused the degradation of rubber wood and greatly reduced its economic value, and the prevention and control of rubber wood discoloration have become the top priority of basic research on rubber wood protection and modification. To determine the fungal community diversity and dominant groups before and after discoloration of rubber wood, nine rubber wood samples were subjected to ITS sequencing using Illumina high-throughput sequencing technology. The results showed that the detected fungal communities comprised 5 phyla, 18 classes, 58 orders, 137 families, 218 genera, and 297 species. Discoloration of rubber wood is not caused by a single species, with the dominant genera for discolored rubber wood being Huntiella, Ceratocystis, and Acremonium and for undiscolored rubber wood, Phomopsis. Furthermore, the diversity, uniformity of species distribution, and richness of discolored rubber wood were found to be higher than those of undiscolored rubber wood. In conclusion, understanding the change trends in the structure of these fungal communities is essential for studying the biological control of rubberwood discoloration. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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16 pages, 2743 KiB

Open AccessArticle

Pseudocercospora rizhaoensis sp. nov. Causing Leaf Spot Disease of Ligustrum japonicum in China

by Yun Liu, Shumei Guo, Jin Liu and Xiangli Yang

Diversity 2022, 14(11), 990; https://doi.org/10.3390/d14110990 - 17 Nov 2022

Cited by 1 | Viewed by 2136

Abstract

Ligustrum japonicum is a common ornamental tree species in China. However, leaf spot disease has emerged in Rizhao City, Shandong Province of China in recent years. Members of Pseudocercospora are usually known as plant pathogens, mainly causing leaf spots and blights. Species of [...] Read more.

Ligustrum japonicum is a common ornamental tree species in China. However, leaf spot disease has emerged in Rizhao City, Shandong Province of China in recent years. Members of Pseudocercospora are usually known as plant pathogens, mainly causing leaf spots and blights. Species of this genus are distinguished mainly based on morphological differences on the host plants, as well as the molecular data. A new species named Pseudocercospora rizhaoensis on Ligustrum japonicum is introduced herein based on morphology and molecular data of combined ITS, LSU, act, tef1 and rpb2 sequences. Koch’s postulates were confirmed by a pathogenicity test, re-isolation and identification. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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12 pages, 4529 KiB

Open AccessArticle

Morphological and Phylogenetic Studies of Three New Species of Calocybe (Agaricales, Basidiomycota) from China

by Yue Qi, Aiguo Xu, Ye Zhou, Kexin Bi, Weiqiang Qin, Hongbo Guo and Xiaodan Yu

Diversity 2022, 14(8), 643; https://doi.org/10.3390/d14080643 - 11 Aug 2022

Cited by 2 | Viewed by 1360

Abstract

Three species, Calocybe lilacea, C. longisterigma, and C. subochraceus, were newly discovered in Inner Mongolia, Hunan, and Liaoning provinces of China. Calocybe lilacea is mainly characterized by its small-sized basidiocarp, brownish-orange pileus, lilac gray to dull violet stipe, and noncellular [...] Read more.

Three species, Calocybe lilacea, C. longisterigma, and C. subochraceus, were newly discovered in Inner Mongolia, Hunan, and Liaoning provinces of China. Calocybe lilacea is mainly characterized by its small-sized basidiocarp, brownish-orange pileus, lilac gray to dull violet stipe, and noncellular epicutis. The main characteristics of C. longisterigma are its light brown to brownish-orange pileus, long sterigmata, and noncellular epicutis. The main morphological features of C. subochraceus are its small-sized basidiocarp, pale-orange pileus, adnexed lamellae, tortuous stipe, and noncellular epicutis. These morphological features confirmed that the three species of Calocybe all belonged to Sect. Carneoviolaceae. Phylogenetic analysis based on a combined dataset (ITS–nrLSU–RPB2) determined that the three species belong to the genus Calocybe and form a distinct lineage. The morphological differences between the three new species and other related species of Calocybe are also discussed. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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9 pages, 2070 KiB

Open AccessArticle

Two New Species of Dacrymyces (Dacrymycetales, Basidiomycota) from Southwestern China

by Ya-Ping Lian, Ablat Tohtirjap and Fang Wu

Diversity 2022, 14(5), 379; https://doi.org/10.3390/d14050379 - 11 May 2022

Viewed by 1844

Abstract

Two new species of Dacrymyces, D. cerebriformis and D. sinostenosporus, are presented from southwestern China, based on morphological characteristics and phylogenetic analyses. Dacrymyces cerebriformis is characterized by obviously cerebriform basidiomata when mature, hyphae without clamp connections, and hyaline, thin-walled, allantoid, 0–7-septate [...] Read more.

Two new species of Dacrymyces, D. cerebriformis and D. sinostenosporus, are presented from southwestern China, based on morphological characteristics and phylogenetic analyses. Dacrymyces cerebriformis is characterized by obviously cerebriform basidiomata when mature, hyphae without clamp connections, and hyaline, thin-walled, allantoid, 0–7-septate basidiospores (18.4–23.1 × 5.5–7.7 μm). Dacrymyces sinostenosporus is characterized by discoid and applanate basidiomata when mature, hyphae without clamp connections, and hyaline, thin-walled, cylindrical to allantoid, 0–7-septate basidiospores (18.0–23.5 × 6.3–8.0 μm). Dacrymyces cerebriformis can be distinguished from D. sinostenosporus by the narrower thin- or thick-walled terminal cells in the marginal hyphae of the sterile surface (1.7–3.5 μm vs. 3.5–6.0 μm in diameter) and thinner basidiospores (Q = 3.14–3.28 vs. Q = 2.63–2.77). A phylogenetic analysis of Dacrymyces is performed by using a dataset composed of concatenated internal transcribed spacer regions (ITS) and a large subunit (nrLSU) of ribosomal DNA gene, and two new species nested in two distinct lineages with robust support. A full description and illustrations of the two new species are provided here. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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17 pages, 3069 KiB

Open AccessArticle

Six New Species of Leucoagaricus (Agaricaceae) from Northeastern China

by Yunrui Ma, Tiezhi Liu, Xiaodan Yu, Tiezheng Wei and Zai-Wei Ge

Diversity 2022, 14(5), 314; https://doi.org/10.3390/d14050314 - 20 Apr 2022

Cited by 10 | Viewed by 4616

Abstract

Six new species, Leucoagaricus albosquamosus, Leucoagaricus atroviridis, Leucoagaricus aurantioruber, Leucoagaricus candidus, Leucoagaricus centricastaneus and Leucoagaricus virens, collected from northeastern China are described based on morphological characters and molecular evidence. Illustrations of fresh basidiomata and line drawings of key anatomical characters are provided. [...] Read more.

Six new species, Leucoagaricus albosquamosus, Leucoagaricus atroviridis, Leucoagaricus aurantioruber, Leucoagaricus candidus, Leucoagaricus centricastaneus and Leucoagaricus virens, collected from northeastern China are described based on morphological characters and molecular evidence. Illustrations of fresh basidiomata and line drawings of key anatomical characters are provided. A phylogenetic tree inferred from internal transcribed spacer (ITS) region and large subunit ribosomal RNA gene (LSU) sequences shows that three of the new taxa are nested within the section Leucoagaricus and two of the new taxa are in the subgenus Sericeomyces, whereas the other new taxus is clustered with Leucoagaricus viriditinctus and Leucoagaricus irinellus, forming a clade that does not fit in any known section. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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11 pages, 2379 KiB

Open AccessArticle

Two New Species of Diatrype (Xylariales, Ascomycota) with Polysporous Asci from China

by Zhanen Yang, Bo Zhang, Zhi Qu, Zikun Song, Xiaoyan Pan, Changlin Zhao and Haixia Ma

Diversity 2022, 14(2), 149; https://doi.org/10.3390/d14020149 - 18 Feb 2022

Cited by 5 | Viewed by 1744

Abstract

Two new species of Diatrype collected in northeast China are described and illustrated based on morphological and molecular evidence. Diatrype larissae from Heilongjiang Province is characterised by having 3–6 perithecia in a stroma, asci polysporous, ascospores allantoid, aseptate, slightly or moderately curved, subhyaline. [...] Read more.

Two new species of Diatrype collected in northeast China are described and illustrated based on morphological and molecular evidence. Diatrype larissae from Heilongjiang Province is characterised by having 3–6 perithecia in a stroma, asci polysporous, ascospores allantoid, aseptate, slightly or moderately curved, subhyaline. Diatrype betulaceicola from Inner Mongolia has large stroma with 5–14 perithecia, perithecium immersed, asci polysporous, long-stalked, ascospores allantoid, aseptate, slightly curved, subhyaline. The phylogenies inferred from the data set of nrDNA ITS1-5.8S-ITS2 (ITS) and beta-tubulin (β-tubulin) supported the two new species both as members in the genus Diatrype and distinct species. The morphological similarities and dissimilarities of the new species with phylogenetically close relatives are discussed. A dichotomous identification key to the Diatrype spp. known from China is proposed. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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12 pages, 1826 KiB

Open AccessEditor’s ChoiceArticle

Three New Species of Absidia (Mucoromycota) from China Based on Phylogeny, Morphology and Physiology

by Heng Zhao, Yong Nie, Tongkai Zong, Yucheng Dai and Xiaoyong Liu

Diversity 2022, 14(2), 132; https://doi.org/10.3390/d14020132 - 13 Feb 2022

Cited by 8 | Viewed by 3470

Abstract

Species of Absidia are distributed widely in the environment, while their diversity is insufficiently studied. Three new species, A. frigida, A. gemella and A. longissima, are proposed herein from Xinjiang and Yunnan in China based on phylogenetic, morphological and physiological evidence. [...] Read more.

Species of Absidia are distributed widely in the environment, while their diversity is insufficiently studied. Three new species, A. frigida, A. gemella and A. longissima, are proposed herein from Xinjiang and Yunnan in China based on phylogenetic, morphological and physiological evidence. According to maximum likelihood (ML), maximum parsimony (MP) and Bayesian inference (BI) analyses, the phylogenetical results suggest that A. frigida, A. gemella and A. longissima are closely related to A. psychrophilia, A. turgida and A. zonata and A. koreana, respectively, based on ITS and LSU rDNA sequences. Absidia frigida is characterized by a lower growth temperature, which does not grow above 24 °C. It differs from A. psychrophilia by sporangiophores, sporangia, columellae, collars and projections. Absidia gemella is distinguished from A. turgida by hypha, sporangiospores, sporangia, projections and sporangiophores. Absidia longissima is discriminated from A. zonata and A. koreana by sporangiophores, columellae and collars. The three new species are described and illustrated in this article. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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29 pages, 6201 KiB

Open AccessArticle

Diversity of Wood-Decaying Fungi in Wuliangshan Area, Yunnan Province, P.R. China

by Xiao He and Chang-Lin Zhao

Diversity 2022, 14(2), 131; https://doi.org/10.3390/d14020131 - 11 Feb 2022

Cited by 7 | Viewed by 2892

Abstract

Five surveys were carried out in the Wuliangshan area, Yunnan Province, P.R. China, based on a combination of morphological features and molecular evidence. Around 2454 specimens of wood-decaying fungi were collected. The paper summarizes the obtained results on the wood-decaying fungi of this [...] Read more.

Five surveys were carried out in the Wuliangshan area, Yunnan Province, P.R. China, based on a combination of morphological features and molecular evidence. Around 2454 specimens of wood-decaying fungi were collected. The paper summarizes the obtained results on the wood-decaying fungi of this area, consisting in 95 species distributed in 59 genera, 23 families and 9 orders. Their hosts and substrates were also identified. A checklist of wood-decaying fungi is given. Sequences of the ITS nrRNA gene region of the studied specimens were generated and phylogenetic analysis was performed with maximum likelihood, maximum parsimony and Bayesian inference methods. The present list of wood-decaying fungi enriches the knowledge of fungal diversity worldwide and supplies the basic data for future applications. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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14 pages, 3842 KiB

Open AccessArticle

Morphological and Molecular Evidence for Two New Species within Russula Subgenus Brevipes from China

by Jie Song, Haijiao Li, Shijun Wu, Qianqian Chen, Guang Yang, Jinyun Zhang, Junfeng Liang and Bin Chen

Diversity 2022, 14(2), 112; https://doi.org/10.3390/d14020112 - 05 Feb 2022

Cited by 6 | Viewed by 2246

Abstract

Two new Russula species, R. subbrevipes and R. callainomarginis, from China are described based on morphological and molecular characteristics. Russula subbrevipes has thus far only been found in southwestern China at altitudes of higher than 3400 m and is characterized by [...] Read more.

Two new Russula species, R. subbrevipes and R. callainomarginis, from China are described based on morphological and molecular characteristics. Russula subbrevipes has thus far only been found in southwestern China at altitudes of higher than 3400 m and is characterized by a yellow ochre pileal surface, glabrous or tomentose stipe, fruity odor, subglobose to ellipsoid basidiospores, isolated or partially connected warts and pleurocystidia with a cap appendage. Russula callainomarginis is characterized by a cream to white pileus, light turquoise lamellae margin, spongy stipe, light turquoise zone on the top of the stipe, pungent odor, globose to ellipsoid basidiospores and dominant isolated warts. The phylogenetic tree of Russula was constructed with multi-gene sequences, including the internal transcribed spacer regions (ITS), the ribosomal large subunit (nrLSU), the small subunit of the mitochondrial rRNA gene (mtSSU) and the second largest subunit of RNA polymerase II (RPB2). The results show that both R. subbrevipes and R. callainomarginis represent new lineages in Russula subg. Brevipes. Description and illustration of the two new species are presented. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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10 pages, 2418 KiB

Open AccessArticle

The Morphological Characteristics and Phylogenetic Analyses Revealed an Additional Taxon in Heteroradulum (Auriculariales)

by Jia-Jin Li, Chang-Lin Zhao and Chao-Mao Liu

Diversity 2022, 14(1), 40; https://doi.org/10.3390/d14010040 - 09 Jan 2022

Cited by 6 | Viewed by 1881

Abstract

Auriculariales is diverse, embracing a number of corticioid, poroid, and hydnoid genera. The present study covers a new wood-inhabiting fungal species of Heteroradulum niveum sp. nov that is proposed on the basis of a combination of morphological features and molecular evidence. The [...] Read more.

Auriculariales is diverse, embracing a number of corticioid, poroid, and hydnoid genera. The present study covers a new wood-inhabiting fungal species of Heteroradulum niveum sp. nov that is proposed on the basis of a combination of morphological features and molecular evidence. The species is characterized by the resupinate basidiomata, a monomitic hyphal system with generative hyphae with clamp connections; tubular cystidia; two- to four-celled basidia; and allantoid, colorless, thin-walled, smooth, IKI–, CB–, basidiospores (6.5–13.5 × 2.7–5.5 µm). Sequences of ITS and nLSU rRNA gene regions of the specimens were generated, and phylogenetic analyses were carried out with methods of maximum parsimony, maximum likelihood, and Bayesian inference. These phylogenetic analyses inferred from ITS+nLSU indicated that H. niveum is nested in Heteroradulum within Auriculariales. Further study within Heteroradulum on the basis of ITS+nLSU dataset revealed that it formed a monophyletic lineage with a strong support (100% BS, 100% BP, 1.00 BPP) and then grouped with H. yunnanensis. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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17 pages, 41286 KiB

Open AccessArticle

Multi-Gene Phylogeny and Taxonomy of Hypoxylon (Hypoxylaceae, Ascomycota) from China

by Haixia Ma, Zikun Song, Xiaoyan Pan, Yu Li, Zhanen Yang and Zhi Qu

Diversity 2022, 14(1), 37; https://doi.org/10.3390/d14010037 - 07 Jan 2022

Cited by 10 | Viewed by 2918

Abstract

The Hypoxylon species play an important ecological role in tropical rainforest as wood-decomposers, and some might have benefical effects on their hosts as endophytes. The present work concerns a survey of the genus Hypoxylon from Hainan Tropical Rainforest National Park of China. Four [...] Read more.

The Hypoxylon species play an important ecological role in tropical rainforest as wood-decomposers, and some might have benefical effects on their hosts as endophytes. The present work concerns a survey of the genus Hypoxylon from Hainan Tropical Rainforest National Park of China. Four new species: H. wuzhishanense, H. hainanense, H.chrysalidosporum, and H.cyclobalanopsidis, were discovered based on a combination of morphological characteristics and molecular data. Hypoxylon wuzhishanense is characterized by Rust pulvinate stromata, amyloid apical apparatus and brown ascospores, with most of the perispore being indehiscent in 10% KOH. Hypoxylon hainanense has effused–pulvinate and Violet stromata, amyloid apical apparatus, light-brown to brown ascospores with straight germ slit and dehiscent perispore. Hypoxylonchrysalidosporum is distinguished by glomerate to pulvinate stromata, highly reduced or absent inamyloid apical apparatus, and light-brown to brown ascospores with very conspicuous coil-like ornamentation. Hypoxyloncyclobalanopsidis has Livid Purple pulvinate stromata, highly reduced amyloid apical apparatus, faint bluing, brown ascospores and dehiscent perispore, and it grows on dead branches of Cyclobalanopsis. Detailed descriptions, illustrations, and contrasts with morphologically similar species are provided. Phylogenetic analyses inferred from ITS, RPB2, LSU, and β-tubulin sequences confirmed that the four new species are distinct within the genus Hypoxylon. Full article

(This article belongs to the Special Issue Diversity and Evolution of Fungi)

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