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Koloniuk I, Fránová J, Přibylová J, Sarkisova T, Špak J, Tan JL, Zemek R, Čmejla R, Rejlová M, Valentová L, Sedlák J, Holub J, Skalík J, Blystad DR, Sapkota B, Hamborg Z. Molecular Characterization of a Novel Enamovirus Infecting Raspberry. Viruses 2023; 15:2281. [PMID: 38140523 PMCID: PMC10747458 DOI: 10.3390/v15122281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 12/24/2023] Open
Abstract
Raspberry plants, valued for their fruits, are vulnerable to a range of viruses that adversely affect their yield and quality. Utilizing high-throughput sequencing (HTS), we identified a novel virus, tentatively named raspberry enamovirus 1 (RaEV1), in three distinct raspberry plants. This study provides a comprehensive characterization of RaEV1, focusing on its genomic structure, phylogeny, and possible transmission routes. Analysis of nearly complete genomes from 14 RaEV1 isolates highlighted regions of variance, particularly marked by indel events. The evidence from phylogenetic and sequence analyses supports the classification of RaEV1 as a distinct species within the Enamovirus genus. Among the 289 plant and 168 invertebrate samples analyzed, RaEV1 was detected in 10.4% and 0.4%, respectively. Most detections occurred in plants that were also infected with other common raspberry viruses. The virus was present in both commercial and wild raspberries, indicating the potential of wild plants to act as viral reservoirs. Experiments involving aphids as potential vectors demonstrated their ability to acquire RaEV1 but not to successfully transmit it to plants.
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Affiliation(s)
- Igor Koloniuk
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.F.); (J.P.); (T.S.); (J.Š.)
| | - Jana Fránová
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.F.); (J.P.); (T.S.); (J.Š.)
| | - Jaroslava Přibylová
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.F.); (J.P.); (T.S.); (J.Š.)
| | - Tatiana Sarkisova
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.F.); (J.P.); (T.S.); (J.Š.)
| | - Josef Špak
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.F.); (J.P.); (T.S.); (J.Š.)
| | - Jiunn Luh Tan
- Institute of Entomology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.L.T.); (R.Z.)
- Faculty of Science, University of South Bohemia, 370 05 Ceske Budejovice, Czech Republic
| | - Rostislav Zemek
- Institute of Entomology, Biology Centre, Czech Academy of Sciences, 370 05 Ceske Budejovice, Czech Republic; (J.L.T.); (R.Z.)
| | - Radek Čmejla
- Research and Breeding Institute of Pomology Holovousy Ltd., 508 01 Horice, Czech Republic; (R.Č.); (M.R.); (L.V.); (J.S.)
| | - Martina Rejlová
- Research and Breeding Institute of Pomology Holovousy Ltd., 508 01 Horice, Czech Republic; (R.Č.); (M.R.); (L.V.); (J.S.)
| | - Lucie Valentová
- Research and Breeding Institute of Pomology Holovousy Ltd., 508 01 Horice, Czech Republic; (R.Č.); (M.R.); (L.V.); (J.S.)
| | - Jiří Sedlák
- Research and Breeding Institute of Pomology Holovousy Ltd., 508 01 Horice, Czech Republic; (R.Č.); (M.R.); (L.V.); (J.S.)
| | - Jan Holub
- Jan Holub Ltd., 783 25 Bouzov, Czech Republic; (J.H.); (J.S.)
| | - Jan Skalík
- Jan Holub Ltd., 783 25 Bouzov, Czech Republic; (J.H.); (J.S.)
| | - Dag-Ragnar Blystad
- Norwegian Institute of Bioeconomy Research, 1433 Aas, Norway; (D.-R.B.); (B.S.); (Z.H.)
| | - Bijaya Sapkota
- Norwegian Institute of Bioeconomy Research, 1433 Aas, Norway; (D.-R.B.); (B.S.); (Z.H.)
| | - Zhibo Hamborg
- Norwegian Institute of Bioeconomy Research, 1433 Aas, Norway; (D.-R.B.); (B.S.); (Z.H.)
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Nita M, Jones T, McHenry D, Bush E, Oliver C, Kawaguchi A, Nita A, Katori M. A NitroPure Nitrocellulose Membrane-Based Grapevine Virus Sampling Kit: Development and Deployment to Survey Japanese Vineyards and Nurseries. Viruses 2023; 15:2102. [PMID: 37896878 PMCID: PMC10612103 DOI: 10.3390/v15102102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
We developed a NitroPure Nitrocellulose (NPN) membrane-based method for sampling and storing grapevine sap for grapevine virus detection. We devised an efficient nucleic acid extraction method for the NPN membrane, resulting in 100% amplification success for grapevine leafroll-associated virus 2 (GLRaV2) and 3 (GLRaV3), grapevine rupestris stem pitting-associated virus (GRSPaV), grapevine virus A, grapevine virus B, and grapevine red blotch virus (GRBV). This method also allowed the storage of recoverable nucleic acid for 18 months at room temperature. We created a sampling kit to survey GLRaV2, GLRaV3, and GRBV in Japanese vineyards. We tested the kits in the field in 2018 and then conducted mail-in surveys in 2020-2021. The results showed a substantial prevalence of GLRaV3, with 48.5% of 132 sampled vines being positive. On the other hand, only 3% of samples tested positive for GLRaV2 and none for GRBV.
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Affiliation(s)
- Mizuho Nita
- Alson H. Smith Jr. Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University (Virginia Tech), Winchester, VA 22602, USA (E.B.); (C.O.)
- Department of Law and Economics, Shinshu University, Nagano 390-8621, Japan
| | - Taylor Jones
- Alson H. Smith Jr. Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University (Virginia Tech), Winchester, VA 22602, USA (E.B.); (C.O.)
| | - Diana McHenry
- Alson H. Smith Jr. Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University (Virginia Tech), Winchester, VA 22602, USA (E.B.); (C.O.)
| | - Elizabeth Bush
- Alson H. Smith Jr. Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University (Virginia Tech), Winchester, VA 22602, USA (E.B.); (C.O.)
| | - Charlotte Oliver
- Alson H. Smith Jr. Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University (Virginia Tech), Winchester, VA 22602, USA (E.B.); (C.O.)
| | - Akira Kawaguchi
- National Agriculture and Food Research Organization (NARO), Western Region Agricultural Research Center, Hiroshima 721-8514, Japan
| | - Akiko Nita
- Alson H. Smith Jr. Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University (Virginia Tech), Winchester, VA 22602, USA (E.B.); (C.O.)
| | - Miyuki Katori
- Department of Law and Economics, Shinshu University, Nagano 390-8621, Japan
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3
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Tarquini G, Dall'Ara M, Ermacora P, Ratti C. Traditional Approaches and Emerging Biotechnologies in Grapevine Virology. Viruses 2023; 15:v15040826. [PMID: 37112807 PMCID: PMC10142720 DOI: 10.3390/v15040826] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 04/29/2023] Open
Abstract
Environmental changes and global warming may promote the emergence of unknown viruses, whose spread is favored by the trade in plant products. Viruses represent a major threat to viticulture and the wine industry. Their management is challenging and mostly relies on prophylactic measures that are intended to prevent the introduction of viruses into vineyards. Besides the use of virus-free planting material, the employment of agrochemicals is a major strategy to prevent the spread of insect vectors in vineyards. According to the goal of the European Green Deal, a 50% decrease in the use of agrochemicals is expected before 2030. Thus, the development of alternative strategies that allow the sustainable control of viral diseases in vineyards is strongly needed. Here, we present a set of innovative biotechnological tools that have been developed to induce virus resistance in plants. From transgenesis to the still-debated genome editing technologies and RNAi-based strategies, this review discusses numerous illustrative studies that highlight the effectiveness of these promising tools for the management of viral infections in grapevine. Finally, the development of viral vectors from grapevine viruses is described, revealing their positive and unconventional roles, from targets to tools, in emerging biotechnologies.
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Affiliation(s)
- Giulia Tarquini
- Department of Agricultural, Environmental, Food and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
| | - Mattia Dall'Ara
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, 40127 Bologna, Italy
| | - Paolo Ermacora
- Department of Agricultural, Environmental, Food and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
| | - Claudio Ratti
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, 40127 Bologna, Italy
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Costa LC, Atha B, Hu X, Lamour K, Yang Y, O’Connell M, McFarland C, Foster JA, Hurtado-Gonzales OP. High-throughput detection of a large set of viruses and viroids of pome and stone fruit trees by multiplex PCR-based amplicon sequencing. FRONTIERS IN PLANT SCIENCE 2022; 13:1072768. [PMID: 36578329 PMCID: PMC9791224 DOI: 10.3389/fpls.2022.1072768] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
A comprehensive diagnostic method of known plant viruses and viroids is necessary to provide an accurate phytosanitary status of fruit trees. However, most widely used detection methods have a small limit on either the number of targeted viruses/viroids or the number of samples to be evaluated at a time, hampering the ability to rapidly scale up the test capacity. Here we report that by combining the power of high multiplexing PCR (499 primer pairs) of small amplicons (120-135bp), targeting 27 viruses and 7 viroids of fruit trees, followed by a single high-throughput sequencing (HTS) run, we accurately diagnosed the viruses and viroids on as many as 123 pome and stone fruit tree samples. We compared the accuracy, sensitivity, and reproducibility of this approach and contrast it with other detection methods including HTS of total RNA (RNA-Seq) and individual RT-qPCR for every fruit tree virus or viroid under the study. We argue that this robust and high-throughput cost-effective diagnostic tool will enhance the viral/viroid knowledge of fruit trees while increasing the capacity for large scale diagnostics. This approach can also be adopted for the detection of multiple viruses and viroids in other crops.
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Affiliation(s)
- Larissa Carvalho Costa
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Benjamin Atha
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Xiaojun Hu
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Kurt Lamour
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | - Yu Yang
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Mary O’Connell
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Clint McFarland
- Plant Protection and Quarantine - Field Operations, Animal and Plant Health Inspection Service, United States Department of Agriculture, Raleigh, NC, United States
| | - Joseph A. Foster
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Oscar P. Hurtado-Gonzales
- Plant Germplasm Quarantine Program, Animal and Plant Health Inspection Service, United States Department of Agriculture, Beltsville, MD, United States
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Várallyay E, Přibylová J, Galbacs ZN, Jahan A, Varga T, Špak J, Lenz O, Fránová J, Sedlák J, Koloniuk I. Detection of Apple Hammerhead Viroid, Apple Luteovirus 1 and Citrus Concave Gum-Associated Virus in Apple Propagation Materials and Orchards in the Czech Republic and Hungary. Viruses 2022; 14:v14112347. [PMID: 36366445 PMCID: PMC9695845 DOI: 10.3390/v14112347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/22/2022] [Accepted: 10/24/2022] [Indexed: 02/01/2023] Open
Abstract
Grafting cultivars onto rootstocks is a widely used practice by the apple industry predominantly aimed at faster fruit bearing. Using high-throughput sequencing, we revealed the presence of recently described viral agents, namely apple hammerhead viroid (AHVd), apple luteovirus 1 (ALV-1), and citrus concave gum-associated virus (CCGaV), in germplasm collections and production orchards in the Czech Republic and Hungary. The HTS results were validated with RT-(q)PCR, and Northern blotting techniques. To obtain further insight about the presence of these agents, RT-PCR based surveys were carried out and showed their widespread presence alone or in mixed infections. The pathogens were present both in production areas and in feral samples. In addition, rootstock-to-scion transmission of ALV-1 and CCGaV was confirmed using commercial rootstock materials. Phylogenetic relationships based on partial sequences of distinct variants were also investigated. Furthermore, the rosy apple aphid was found to be ALV-1-positive, suggesting that it might be a potential vector of the virus.
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Affiliation(s)
- Eva Várallyay
- Genomics Research Group, Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Szent-Gyorgyi Albert Street 4, 2100 Gödöllő, Hungary
- Correspondence: (E.V.); (I.K.)
| | - Jaroslava Přibylová
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branišovská 31, 37005 České Budějovice, Czech Republic
| | - Zsuzsanna Nagyne Galbacs
- Genomics Research Group, Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Szent-Gyorgyi Albert Street 4, 2100 Gödöllő, Hungary
| | - Almash Jahan
- Genomics Research Group, Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Szent-Gyorgyi Albert Street 4, 2100 Gödöllő, Hungary
| | - Tunde Varga
- Genomics Research Group, Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Szent-Gyorgyi Albert Street 4, 2100 Gödöllő, Hungary
| | - Josef Špak
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branišovská 31, 37005 České Budějovice, Czech Republic
| | - Ondřej Lenz
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branišovská 31, 37005 České Budějovice, Czech Republic
| | - Jana Fránová
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branišovská 31, 37005 České Budějovice, Czech Republic
| | - Jiří Sedlák
- Research and Breeding Institute of Pomology Holovousy, Ltd., Holovousy 129, 50801 Holovousy, Czech Republic
| | - Igor Koloniuk
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branišovská 31, 37005 České Budějovice, Czech Republic
- Correspondence: (E.V.); (I.K.)
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Rienth M, Vigneron N, Walker RP, Castellarin SD, Sweetman C, Burbidge CA, Bonghi C, Famiani F, Darriet P. Modifications of Grapevine Berry Composition Induced by Main Viral and Fungal Pathogens in a Climate Change Scenario. FRONTIERS IN PLANT SCIENCE 2021; 12:717223. [PMID: 34956249 PMCID: PMC8693719 DOI: 10.3389/fpls.2021.717223] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 11/01/2021] [Indexed: 06/14/2023]
Abstract
The grapevine is subject to high number of fungal and viral diseases, which are responsible for important economic losses in the global wine sector every year. These pathogens deteriorate grapevine berry quality either directly via the modulation of fruit metabolic pathways and the production of endogenous compounds associated with bad taste and/or flavor, or indirectly via their impact on vine physiology. The most common and devastating fungal diseases in viticulture are gray mold, downy mildew (DM), and powdery mildew (PM), caused, respectively by Botrytis cinerea, Plasmopara viticola, and Erysiphe necator. Whereas B. cinerea mainly infects and deteriorates the ripening fruit directly, deteriorations by DM and PM are mostly indirect via a reduction of photosynthetic leaf area. Nevertheless, mildews can also infect berries at certain developmental stages and directly alter fruit quality via the biosynthesis of unpleasant flavor compounds that impair ultimate wine quality. The grapevine is furthermore host of a wide range of viruses that reduce vine longevity, productivity and berry quality in different ways. The most widespread virus-related diseases, that are known nowadays, are Grapevine Leafroll Disease (GLRD), Grapevine Fanleaf Disease (GFLD), and the more recently characterized grapevine red blotch disease (GRBD). Future climatic conditions are creating a more favorable environment for the proliferation of most virus-insect vectors, so the spread of virus-related diseases is expected to increase in most wine-growing regions. However, the impact of climate change on the evolution of fungal disease pressure will be variable and depending on region and pathogen, with mildews remaining certainly the major phytosanitary threat in most regions because their development rate is to a large extent temperature-driven. This paper aims to provide a review of published literature on most important grapevine fungal and viral pathogens and their impact on grape berry physiology and quality. Our overview of the published literature highlights gaps in our understanding of plant-pathogen interactions, which are valuable for conceiving future research programs dealing with the different pathogens and their impacts on grapevine berry quality and metabolism.
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Affiliation(s)
- Markus Rienth
- Changins College for Viticulture and Oenology, University of Sciences and Art Western Switzerland, Nyon, Switzerland
| | - Nicolas Vigneron
- Changins College for Viticulture and Oenology, University of Sciences and Art Western Switzerland, Nyon, Switzerland
| | - Robert P. Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Simone Diego Castellarin
- Wine Research Centre, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, Canada
| | - Crystal Sweetman
- College of Science & Engineering, Flinders University, Bedford Park, SA, Australia
| | - Crista A. Burbidge
- School of Agriculture and Food, Commonwealth Scientific and Industrial Research Organization (CSIRO), Glen Osmond, SA, Australia
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, Legnaro, Italy
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Philippe Darriet
- Univ. Bordeaux, Unité de recherche Œnologie EA 4577, USC 1366 INRAE, Institut des Sciences de la Vigne et du Vin, Villenave d’Ornon, France
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Hou W, Li S, Massart S. Is There a "Biological Desert" With the Discovery of New Plant Viruses? A Retrospective Analysis for New Fruit Tree Viruses. Front Microbiol 2020; 11:592816. [PMID: 33329473 PMCID: PMC7710903 DOI: 10.3389/fmicb.2020.592816] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/29/2020] [Indexed: 12/13/2022] Open
Abstract
High throughput sequencing technologies accelerated the pace of discovery and identification of new viral species. Nevertheless, biological characterization of a new virus is a complex and long process, which can hardly follow the current pace of virus discovery. This review has analyzed 78 publications of new viruses and viroids discovered from 32 fruit tree species since 2011. The scientific biological information useful for a pest risk assessment and published together with the discovery of a new fruit tree virus or viroid has been analyzed. In addition, the 933 publications citing at least one of these original publications were reviewed, focusing on the biology-related information provided. In the original publications, the scientific information provided was the development of a detection test (94%), whole-genome sequence including UTRs (92%), local and large-scale epidemiological surveys (68%), infectivity and indicators experiments (50%), association with symptoms (25%), host range infection (23%), and natural vector identification (8%). The publication of a new virus is cited 2.8 times per year on average. Only 18% of the citations reported information on the biology or geographical repartition of the new viruses. These citing publications improved the new virus characterization by identifying the virus in a new country or continent, determining a new host, developing a new diagnostic test, studying genome or gene diversity, or by studying the transmission. Based on the gathered scientific information on the virus biology, the fulfillment of a recently proposed framework has been evaluated. A baseline prioritization approach for publishing a new plant virus is proposed for proper assessment of the potential risks caused by a newly identified fruit tree virus.
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Affiliation(s)
- Wanying Hou
- Key Laboratory of Tobacco Pest Monitoring Controlling and Integrated Management, Institute of Tobacco Research, Chinese Academy of Agricultural Sciences, Qingdao, China
- Plant Pathology Laboratory, TERRA, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Shifang Li
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Sebastien Massart
- Plant Pathology Laboratory, TERRA, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
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Bragard C, Dehnen-Schmutz K, Gonthier P, Jacques MA, Jaques Miret JA, Justesen AF, MacLeod A, Magnusson CS, Milonas P, Navas-Cortes JA, Parnell S, Potting R, Reignault PL, Thulke HH, Van der Werf W, Vicent Civera A, Yuen J, Zappalà L, Candresse T, Chatzivassiliou E, Finelli F, Winter S, Bosco D, Chiumenti M, Di Serio F, Kaluski T, Minafra A, Rubino L. Pest categorisation of non-EU viruses of Fragaria L. EFSA J 2020; 17:e05766. [PMID: 32626424 PMCID: PMC7009162 DOI: 10.2903/j.efsa.2019.5766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Following a request from the EU Commission, the Panel on Plant Health addressed the pest categorisation of the viruses and viroids of Fragaria L. determined as being either non‐EU or of undetermined standing in a previous EFSA opinion. These infectious agents belong to different genera and are heterogeneous in their biology. With the exclusion of strawberry latent virus and strawberry latent C virus for which very limited information exists, the pest categorisation was completed for 12 viruses having acknowledged identities and available detection methods. All these viruses are efficiently transmitted by vegetative propagation techniques, with plants for planting representing the major pathway for long‐distance dispersal and thus considered as the major pathway for entry. Depending on the virus, additional pathway(s) can also be Fragaria seeds, pollen and/or vector(s). Most of the viruses categorised here are known to infect only one or few plant genera, but some of them have a wide host range, thus extending the possible entry pathways. Strawberry chlorotic fleck‐associated virus, strawberry leaf curl virus, strawberry necrotic shock virus, strawberry pallidosis‐associated virus, strawberry vein banding virus (SVBV) and tomato ringspot virus meet all the criteria evaluated by EFSA to qualify as potential Union quarantine pests (QPs). For SVBV, the Panel considered that following its entry and establishment into the EU territory, an impact of uncertain magnitude is expected mainly because a synergistic effect may occur in strawberry in case of mixed infections with viruses already present in the EU. Strawberry crinivirus 3, strawberry crinivirus 4 and strawberry polerovirus 1 meet all criteria for being considered as potential Union QPs, except for the impact in the EU territory, on which the Panel was unable to conclude. Fragaria chiloensis cryptic virus, Fragaria chiloensis latent virus and strawberry pseudo mild yellow edge virus do not meet the criterion of having potential negative impact in the EU. For several viruses, especially those recently discovered, the categorisation is associated with high uncertainties mainly because of the absence of data on their biology, distribution and impact. Since this opinion addresses specifically the non‐EU viruses, in general, these viruses do not meet the criteria assessed by EFSA to qualify as potential Union regulated non‐quarantine pests. This publication is linked to the following EFSA Journal articles: http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5501/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5590/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5735/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5769/full
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9
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Bragard C, Dehnen-Schmutz K, Gonthier P, Jacques MA, Jaques Miret JA, Justesen AF, MacLeod A, Magnusson CS, Milonas P, Navas-Cortes JA, Parnell S, Potting R, Reignault PL, Thulke HH, Van der Werf W, Civera AV, Yuen J, Zappalà L, Candresse T, Chatzivassiliou E, Finelli F, Winter S, Bosco D, Chiumenti M, Di Serio F, Ferilli F, Kaluski T, Minafra A, Rubino L. Pest categorisation of non-EU viruses of Ribes L. EFSA J 2019; 17:e05859. [PMID: 32626160 PMCID: PMC7008784 DOI: 10.2903/j.efsa.2019.5859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Following a request from the EU Commission, the Panel on Plant Health addressed the pest categorisation of the viruses of Ribes L. determined as being either non‐EU or of undetermined standing in a previous EFSA opinion. These infectious agents belong to different genera and are heterogeneous in their biology. Alaska vitivirus 1 and Ribes virus F were excluded from categorisation because these are very poorly characterised viruses. The pest categorisation was completed for seven viruses with clear identity and for which detection methods are available. All these viruses are efficiently transmitted by vegetative propagation techniques, with plants for planting representing the major pathway for long‐distance dispersal and thus considered as the major pathway for entry. Depending on the virus, additional pathway(s) can also be Ribes seeds, pollen and/or vector(s). Most of the viruses categorised here are known to infect only one or few plant genera, but tomato ringspot virus (ToRSV) has a wide host range, thus extending the possible entry pathways. ToRSV meets all the criteria evaluated by EFSA to qualify as potential Union quarantine pest (QP). With the exception of impact in the EU territory, on which the Panel was unable to conclude, Actinidia virus X, blackcurrant leaf chlorosis‐associated virus, blackcurrant leafroll‐associated virus, black currant‐associated rhabdovirus, blackcurrant waikavirus A and Ribes americanum virus A satisfy all the other criteria to be considered as potential Union QPs. For several viruses, especially those recently discovered, the categorisation is associated with high uncertainties mainly because of the absence of data on their biology, distribution and impact. Since this opinion addresses specifically the non‐EU viruses, in general these viruses do not meet the criteria assessed by EFSA to qualify as potential Union regulated non‐quarantine pests.
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Bragard C, Dehnen-Schmutz K, Gonthier P, Jacques MA, Jaques Miret JA, Justesen AF, MacLeod A, Magnusson CS, Milonas P, Navas-Cortes JA, Parnell S, Potting R, Reignault PL, Thulke HH, Van der Werf W, Vicent Civera A, Yuen J, Zappalà L, Candresse T, Chatzivassiliou E, Finelli F, Winter S, Chiumenti M, Di Serio F, Kaluski T, Minafra A, Rubino L. Pest categorisation of non-EU viruses and viroids of Cydonia Mill., Malus Mill. and Pyrus L. EFSA J 2019; 17:e05590. [PMID: 32626419 PMCID: PMC7009133 DOI: 10.2903/j.efsa.2019.5590] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Following a request from the EU Commission, the Panel on Plant Health performed a pest categorisation of 17 viruses and viroids, herein called viruses, of Cydonia Mill., Malus Mill. and Pyrus L. determined as being either non‐EU or of undetermined standing in a previous EFSA opinion. These viruses belong to different genera and are heterogeneous in their biology. They can be detected by available methods and are efficiently transmitted by vegetative propagation techniques, with plants for planting representing a major long‐distance spread mechanism and, potentially, a major entry pathway. Depending on the viruses, additional pathway(s) can also be seed, pollen and/or vector transmission. Most of the viruses categorised here are known to infect only one of few related plant genera, but some of them have a wider host range, thus extending the possible entry pathways. Three viruses (apple necrotic mosaic virus, cherry rasp leaf virus, temperate fruit decay‐associated virus) and one viroid (apple fruit crinkle viroid) satisfy all the criteria to be considered as Union quarantine pests. Five viruses (apple green crinkle‐associated virus, blackberry chlorotic ringspot virus, eggplant mottled crinkle virus, tobacco ringspot virus and tomato ringspot virus) and one viroid (apple scar skin viroid), satisfy the criteria to be considered as Union quarantine pests with the possible exception of being absent from the EU territory or having a restricted presence and being under official control. The remaining six viruses (apple geminivirus, apple latent spherical virus, apple‐associated luteovirus, Pyrus pyrifolia cryptic virus, Pyrus pyrifolia partitivirus 2 and Tulare apple mosaic virus) and one viroid (apple hammerhead viroid) were not found to satisfy one or more of these criteria. The Panel highlights that for several viruses, especially those recently discovered, the categorisation is associated with high uncertainties mainly linked to the absence of data on biology and distribution. Since this opinion addresses specifically the non‐EU viruses, in general these viruses do not meet the criteria assessed by EFSA to qualify as a potential Union regulated non‐quarantine pests. This publication is linked to the following EFSA Journal articles: http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5501/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5669/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5735/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5766/full
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