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Pathogens
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Ecology and Etiology of Plant Virus Diseases
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Ecology and Etiology of Plant Virus Diseases

A special issue of Pathogens (ISSN 2076-0817). This special issue belongs to the section "Viral Pathogens".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 10714

Special Issue Editor

Prof. Dr. Akhtar Ali

E-Mail Website
Guest Editor
Department of Biological Science, The University of Tulsa, Tulsa, OK, USA
Interests: emerging and re-emerging of virus diseases; genetic diversity; mutations; recombination; reassortment; bottlenecks
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

To feed the growing population of the world, we need to sustain our agricultural productivity by effectively managing plant diseases caused by a variety of plant pathogens. Among pathogens, plant viruses are economically important because they are responsible for more than half of the emerging infectious diseases in plants. Plant viruses are a continuous threat to agricultural crops and cause significant economic losses in crop yields worldwide. Therefore, it is important to understand the plant virus ecology and etiology before effective management strategies can be developed to minimize yield losses in specific agricultural crops. Additionally, understanding the interactions of plant virus diseases with their hosts (including alternate hosts), vectors, and mechanisms of transmission, prevalence, and sources of inoculum are vital to the management of plant virus diseases. Multiple yearly surveys and field-oriented studies and data to substantiate the above information on plant virus diseases are highly encouraged.

In this Special Issue, we welcome researchers to submit a manuscript (original research articles, reviews, opinions, short communications) that focuses on the ecology and etiology of plant virus diseases in agricultural crops including cereals, legumes, tuber crops, vegetables, fruit, and also weeds. 

References: 

  1. Wijayasekara, D. and Ali. 2020. Complete genome characterization and coat protein genealogy of isolates of Maize dwarf mosaic virus from Johnsongrass and maize in Oklahoma and Missouri. Plant Disease 104:1214-1223.
  2. Helen M. Alexander, Janette A. Steets, and Ali 2020. Distribution of Asclepias asymptomatic virus and exploration of possible effects on the wild plant host, Asclepias viridis. Plant Health Progress 21:54-59.
  3. Abdalla, O. A. and Ali. 2018. Molecular characterization reveals that Squash chlorosis mottling virus and Zucchini tigré mosaic virus are the same newly emerging potyvirus. Archives of Virology, 163:777-780.
  4. Mukta, D., Ali and U. Melcher. 2015. Detection, discrimination and discovery of a new Tobacco streak virus strain. Journal of Virological Methods, 22: 15-21
  5. Ali, A., O. A. Abdalla., B. D. Bruton., W. W. Fish., E. Sikora, S. Zhang, and M. Taylor. 2012. Occurrence of viruses infecting watermelon, other cucurbits and weeds in the parts of southern United States. Plant Health Progress, (doi:10.1094/PHP-2012-0824-01-RS)
  6. Min, B. E, T. S. Feldman, Ali, W. G. Wiley, V. Muthukumar, B. A. Roe, M. J. Roossinck, U.Melcher, M. W. Palmer, and R. S. Nelson. 2012. Molecular characterization, ecology and epidemiology of a novel tymovirus in Asclepias viridis from Oklahoma. Phytopathology, 102: 166-176
  7. Ali, A., O. Mohammad. and A. Khattab. 2012. Distribution of viruses infecting cucurbit crops and isolation of potential new virus-like sequences from weeds in Oklahoma. Plant Disease, 96: 243-248.

Prof. Dr. Akhter Ali
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Pathogens is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plant virus diseases
  • ecology
  • etiology
  • host range
  • transmission

Related Special Issue

Published Papers (4 papers)

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Research

13 pages, 1379 KiB  
Article
Prevalence of Virus Infections and GLRaV-3 Genetic Diversity in Selected Clones of Croatian Indigenous Grapevine Cultivar Plavac Mali
by Mate Čarija, Tomislav Radić, Silvija Černi, Ana Mucalo, Goran Zdunić, Darko Vončina, Martin Jagunić and Katarina Hančević
Pathogens 2022, 11(2), 176; https://doi.org/10.3390/pathogens11020176 - 27 Jan 2022
Cited by 8 | Viewed by 2417
Abstract
The cultivar Plavac Mali (Vitis vinifera L.), the most important indigenous red grapevine cultivar in Croatia, was tested for the presence of 16 grapevine viruses. Thirty-five samples from the collection vineyard were tested for the presence of grapevine leafroll-associated viruses-1, -2, and [...] Read more.
The cultivar Plavac Mali (Vitis vinifera L.), the most important indigenous red grapevine cultivar in Croatia, was tested for the presence of 16 grapevine viruses. Thirty-five samples from the collection vineyard were tested for the presence of grapevine leafroll-associated viruses-1, -2, and -3 (GLRaV-1, GLRaV-2 and GLRaV-3, respectively), grapevine fanleaf virus (GFLV), arabis mosaic virus (ArMV), grapevine virus-A (GVA), -B (GVB), -G (GVG), -H (GVH), -I (GVI), -J (GVJ), grapevine fleck virus (GFkV), grapevine rupestris stem pitting associated virus (GRSPaV), and grapevine pinot gris virus (GPGV) by reverse transcription–polymerase chain reaction (RT-PCR). Furthermore, standard PCR was conducted for grapevine badnavirus 1 (GBV-1) and grapevine red blotch virus (GRBV). Mixed infections were most common and GLRaV-3, the most abundant virus found in 85.71% of the vines tested, was further molecularly characterised. Different genomic variants of the heat shock protein homologue (HSP70h) were separated by cloning, detected by single-strand conformation polymorphism (SSCP) analysis, sequenced, and phylogenetically analysed. The presence of phylogenetic groups I and II was only confirmed. This study demonstrates the high virus infection rate of Plavac Mali vines and the heterogeneity of GLRaV-3 present nowadays in a collection vineyard. Full article
(This article belongs to the Special Issue Ecology and Etiology of Plant Virus Diseases)
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18 pages, 2808 KiB  
Article
The Association between New World Alphasatellites and Bipartite Begomoviruses: Effects on Infection and Vector Transmission
by Angélica M. Nogueira, Monique B. Nascimento, Tarsiane M. C. Barbosa, Ayane F. F. Quadros, João Paulo A. Gomes, Anelise F. Orílio, Danielle R. Barros and Francisco Murilo Zerbini
Pathogens 2021, 10(10), 1244; https://doi.org/10.3390/pathogens10101244 - 26 Sep 2021
Cited by 5 | Viewed by 1870
Abstract
Begomoviruses can be found in association with alphasatellites, which are capable of autonomous replication but are dependent on the helper begomovirus for systemic infection, encapsidation and vector transmission. Previous studies suggest that the presence of NW alphasatellites (genus Clecrusatellite) is associated with [...] Read more.
Begomoviruses can be found in association with alphasatellites, which are capable of autonomous replication but are dependent on the helper begomovirus for systemic infection, encapsidation and vector transmission. Previous studies suggest that the presence of NW alphasatellites (genus Clecrusatellite) is associated with more severe symptoms. To better understand this interaction, we investigated the effects of two alphasatellites on infectivity, symptom development, viral DNA accumulation and vector transmission of three begomoviruses in three hosts. In tomato and Nicotiana benthamiana, all combinations were infectious. In Leonurus sibiricus, only the ToYSV/ToYSA combination was infectious. The presence of EuYMA increased symptom severity of EuYMV and ToYSV in N. benthamiana, and the presence of ToYSA was associated with more severe symptoms of ToYSV in N. benthamiana and L. sibiricus. EuYMA increased the accumulation of ToYSV in N. benthamiana but reduced the accumulation of EuYMV in tomato and of ToSRV in N. benthamiana. The presence of ToYSA decreased the accumulation of ToYSV in N. benthamiana and L. sibiricus. ToYSA negatively affected transmission of ToSRV by Bemisia tabaci MEAM1. Together, our results indicate that NW alphasatellites can interact with different begomoviruses, increasing symptom severity and interfering in the transmission of the helper begomovirus. Understanding this interaction is important as it may affect the emergence of diseases caused by begomovirus–alphasatellite complexes in the field. Full article
(This article belongs to the Special Issue Ecology and Etiology of Plant Virus Diseases)
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11 pages, 772 KiB  
Article
Virus Surveys in Olive Orchards in Greece Identify Olive Virus T, a Novel Member of the Genus Tepovirus
by Evanthia Xylogianni, Paolo Margaria, Dennis Knierim, Kyriaki Sareli, Stephan Winter and Elisavet K. Chatzivassiliou
Pathogens 2021, 10(5), 574; https://doi.org/10.3390/pathogens10050574 - 08 May 2021
Cited by 7 | Viewed by 2246
Abstract
Field surveys were conducted in Greek olive orchards from 2017 to 2020 to collect information on the sanitary status of the trees. Using a high-throughput sequencing approach, viral sequences were identified in total RNA extracts from several trees and assembled to reconstruct the [...] Read more.
Field surveys were conducted in Greek olive orchards from 2017 to 2020 to collect information on the sanitary status of the trees. Using a high-throughput sequencing approach, viral sequences were identified in total RNA extracts from several trees and assembled to reconstruct the complete genomes of two isolates of a new viral species of the genus Tepovirus (Betaflexiviridae), for which the name olive virus T (OlVT) is proposed. A reverse transcription–polymerase chain reaction assay was developed which detected OlVT in samples collected in olive growing regions in Central and Northern Greece, showing a virus prevalence of 4.4% in the olive trees screened. Sequences of amplified fragments from the movement–coat protein region of OlVT isolates varied from 75.64% to 99.35%. Three olive varieties (Koroneiki, Arbequina and Frantoio) were infected with OlVT via grafting to confirm a graft-transmissible agent, but virus infections remained latent. In addition, cucumber mosaic virus, olive leaf yellowing-associated virus and cherry leaf roll virus were identified. Full article
(This article belongs to the Special Issue Ecology and Etiology of Plant Virus Diseases)
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20 pages, 3937 KiB  
Article
High Prevalence of Three Potyviruses Infecting Cucurbits in Oklahoma and Phylogenetic Analysis of Cucurbit Aphid-Borne Yellows Virus Isolated from Pumpkins
by Vivek Khanal, Harrington Wells and Akhtar Ali
Pathogens 2021, 10(1), 53; https://doi.org/10.3390/pathogens10010053 - 08 Jan 2021
Cited by 10 | Viewed by 3135
Abstract
Field information about viruses infecting crops is fundamental for understanding the severity of the effects they cause in plants. To determine the status of cucurbit viruses, surveys were conducted for three consecutive years (2016–2018) in different agricultural districts of Oklahoma. A total of [...] Read more.
Field information about viruses infecting crops is fundamental for understanding the severity of the effects they cause in plants. To determine the status of cucurbit viruses, surveys were conducted for three consecutive years (2016–2018) in different agricultural districts of Oklahoma. A total of 1331 leaf samples from >90 fields were randomly collected from both symptomatic and asymptomatic cucurbit plants across 11 counties. All samples were tested with the dot-immunobinding assay (DIBA) against the antisera of 10 known viruses. Samples infected with papaya ringspot virus (PRSV-W), watermelon mosaic virus (WMV), zucchini yellow mosaic virus (ZYMV), and cucurbit aphid-borne-yellows virus (CABYV) were also tested by RT-PCR. Of the 10 viruses, PRSV-W was the most widespread, with an overall prevalence of 59.1%, present in all 11 counties, followed by ZYMV (27.6%), in 10 counties, and WMV (20.7%), in seven counties, while the remaining viruses were present sporadically with low incidence. Approximately 42% of the infected samples were positive, with more than one virus indicating a high proportion of mixed infections. CABYV was detected for the first time in Oklahoma, and the phylogenetic analysis of the first complete genome sequence of a CABYV isolate (BL-4) from the US showed a close relationship with Asian isolates. Full article
(This article belongs to the Special Issue Ecology and Etiology of Plant Virus Diseases)
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