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Sanfaçon H, Alam SB, Ghoshal B, Ghoshal K, Hui E, Jackson AO, Kakani K, Morris TJ, Nagy PD, Simon AE, Sit TL, Smith TJ, White KA, Xiang Y. D'Ann Rochon (1955-2022), a life of passion for plant virology. Virology 2023; 587:109874. [PMID: 37690385 DOI: 10.1016/j.virol.2023.109874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
D'Ann Rochon passed away on November 29th 2022. She is remembered for her outstanding contributions to the field of plant virology, her strong commitment to high quality science and her dedication to the training and mentorship of the next generation of scientists. She was a research scientist for Agriculture and Agri-Food Canada and an Adjunct Professor for the University of British Columbia. Her research program provided new insights on the infection cycle of tombusviruses and related viruses, including ground-breaking research on the structure of virus particles, the mechanisms of virus transmission by fungal zoospores, and the complexity of plant-virus interactions. She also developed diagnostic antibodies for plum pox virus and little cherry virus 2 that have had a significant impact on the management of these viruses.
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Affiliation(s)
- Hélène Sanfaçon
- Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, V0H 1Z0, Summerland, BC, Canada.
| | - Syed Benazir Alam
- Nanotechnology Research Center, National Research Council Canada, 11421 Saskatchewan Dr NW, T6G 2M9, Edmonton, AB, Canada.
| | - Basudev Ghoshal
- Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, V0H 1Z0, Summerland, BC, Canada.
| | - Kankana Ghoshal
- Canadian Food Inspection Agency, Sidney Laboratory, Center for Plant Health, 8801 East Saanich Road, V8L 1H3, Victoria, BC, Canada.
| | - Elizabeth Hui
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada.
| | | | - Kishore Kakani
- Enzyme/Protein Engineering, Twist Bioscience, 681 Gateway Blvd., South San Francisco, CA 94080, USA.
| | - T Jack Morris
- School of Biological Sciences, University of Nebraska, Lincoln, USA.
| | - Peter D Nagy
- Department of Plant Pathology, University of Kentucky, Lexington, USA.
| | - Anne E Simon
- Department of Cell Biology and Molecular Genetics, University of Maryland - College Park, College Park, MD, USA.
| | - Tim L Sit
- Department of Entomology and Plant Pathology, NC State University, Campus Box 7616, Raleigh, NC 27695-7616, USA.
| | - Thomas J Smith
- University of Texas Medical Branch at Galveston, Department of Biochemistry and Molecular Biology, 301 University Boulevard, Route 0645, Galveston, TX, 77555, USA.
| | - K Andrew White
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada.
| | - Yu Xiang
- Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, V0H 1Z0, Summerland, BC, Canada.
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Rodamilans B, Hadersdorfer J, Berki Z, García B, Neumüller M, García JA. The Mechanism of Resistance of EUROPEAN Plum to Plum pox virus Mediated by Hypersensitive Response Is Linked to VIRAL NIa and Its Protease Activity. Plants (Basel) 2023; 12:1609. [PMID: 37111834 PMCID: PMC10147044 DOI: 10.3390/plants12081609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/21/2023] [Accepted: 04/04/2023] [Indexed: 06/19/2023]
Abstract
Plum pox virus (PPV) infects Prunus trees across the globe, causing the serious Sharka disease. Breeding programs in the past 20 years have been successful, generating plum varieties hypersensitive to PPV that show resistance in the field. Recently, a single tree displaying typical PPV symptoms was detected in an orchard of resistant plums. The tree was eradicated, and infected material was propagated under controlled conditions to study the new PPV isolate. Performing overlapping PCR analysis, the viral sequence was reconstructed, cloned and tested for infectivity in different 'Jojo'-based resistant plums. The results confirmed that the isolate, named PPV-D 'Herrenberg' (PPVD-H), was able to infect all these varieties. Analyses of chimeras between PPVD-H and a PPV-D standard isolate (PPVD) revealed that the NIa region of PPD-H, carrying three amino acid changes, was enough to break the resistance of these plums. Experiments with single and double mutants showed that all changes were essential to preserve the escaping phenotype. Additionally, one of the changes at the VPg-NIapro junction suggested the involvement of controlled endopeptidase cleavage in the viral response. Transient expression experiments in Nicotiana benthamiana confirmed that NIa cleavage in PPVD-H was reduced, compared to PPVD, linking the observed behavior to an NIa cleavage modulation.
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Affiliation(s)
- Bernardo Rodamilans
- Centro Nacional de Biotecnología (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin 3, 28049 Madrid, Spain
| | - Johannes Hadersdorfer
- School of Life Sciences Weihenstephan, Technical University of Munich, Dürnast 2, D-85354 Freising, Germany
| | - Zita Berki
- Centro Nacional de Biotecnología (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin 3, 28049 Madrid, Spain
| | - Beatriz García
- Centro Nacional de Biotecnología (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin 3, 28049 Madrid, Spain
| | - Michael Neumüller
- Bavarian Centre of Pomology and Fruit Breeding, Am Süßbach 1, D-85399 Hallbergmoos, Germany
| | - Juan Antonio García
- Centro Nacional de Biotecnología (CNB-CSIC), Campus Universidad Autónoma de Madrid, Darwin 3, 28049 Madrid, Spain
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Rodamilans B, Oliveros JC, San León D, Martínez-García PJ, Martínez-Gómez P, García JA, Rubio M. sRNA Analysis Evidenced the Involvement of Different Plant Viruses in the Activation of RNA Silencing-Related Genes and the Defensive Response Against Plum pox virus of 'GF305' Peach Grafted with 'Garrigues' Almond. Phytopathology 2022; 112:2012-2021. [PMID: 35302895 DOI: 10.1094/phyto-01-22-0032-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Plum pox virus (PPV) causes sharka disease in Prunus trees. Peach (P. persica) trees are severely affected by PPV, and no definitive source of genetic resistance has been identified. However, previous results showed that PPV-resistant 'Garrigues' almond (P. dulcis) was able to transfer its resistance to 'GF305' peach through grafting, reducing symptoms and viral load in PPV-infected plants. A recent study tried to identify genes responsible for this effect by studying messenger RNA expression through RNA sequencing in peach and almond plants, before and after grafting and before and after PPV infection. In this work, we used the same peach and almond samples but focused the high-throughput analyses on small RNA (sRNA) expression. We studied massive sequencing data and found an interesting pattern of sRNA overexpression linked to antiviral defense genes that suggested activation of these genes followed by downregulation to basal levels. We also discovered that 'Garrigues' almond plants were infected by different plant viruses that were transferred to peach plants. The large amounts of viral sRNA found in grafted peaches indicated a strong RNA silencing antiviral response and led us to postulate that these plant viruses could be collaborating in the observed "Garrigues effect."
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Affiliation(s)
| | - Juan C Oliveros
- Department of Plant Molecular Genetics, CNB-CSIC, 28049 Madrid, Spain
| | - David San León
- Department of Plant Molecular Genetics, CNB-CSIC, 28049 Madrid, Spain
| | | | | | - Juan A García
- Department of Plant Molecular Genetics, CNB-CSIC, 28049 Madrid, Spain
| | - Manuel Rubio
- Department of Plant Breeding, CEBAS-CSIC, 30100 Murcia, Spain
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Li Y, Wang A. Biolistic Inoculation of Fruit Trees with Full-Length Infectious cDNA Clones of RNA Viruses. Methods Mol Biol 2022; 2400:207-216. [PMID: 34905204 DOI: 10.1007/978-1-0716-1835-6_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Long life cycle and lack of efficient and robust virus inoculation technique are the major technical challenges for studying virus infection in perennial woody plants such as fruit trees. Biolistic technology also called particle bombardment is a physical approach that can directly introduce virions or viral full-length cDNA infectious clones into target cells and tissues by high velocity microcarrier particles. The flexibility and high efficiency of the biolistic inoculation method facilitate research on fruit tree virology and the screening and identification of fruit tree germplasms resistant to viruses. Here, we describe a detailed protocol for the biolistic inoculation of peach with of a cDNA infectious clone of Plum pox virus (PPV) using the Helios gene gun, a biolistic particle delivery system.
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Affiliation(s)
- Yinzi Li
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Aiming Wang
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada.
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Espinoza C, Bascou B, Calvayrac C, Bertrand C. Deciphering Prunus Responses to PPV Infection: A Way toward the Use of Metabolomics Approach for the Diagnostic of Sharka Disease. Metabolites 2021; 11:metabo11070465. [PMID: 34357359 PMCID: PMC8307365 DOI: 10.3390/metabo11070465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/09/2021] [Accepted: 07/14/2021] [Indexed: 11/23/2022] Open
Abstract
Sharka disease, caused by Plum pox virus (PPV), induces several changes in Prunus. In leaf tissues, the infection may cause oxidative stress and disrupt the photosynthetic process. Moreover, several defense responses can be activated after PPV infection and have been detected at the phytohormonal, transcriptomic, proteomic, and even translatome levels. As proposed in this review, some responses may be systemic and earlier to the onset of symptoms. Nevertheless, these changes are highly dependent among species, variety, sensitivity, and tissue type. In the case of fruit tissues, PPV infection can modify the ripening process, induced by an alteration of the primary metabolism, including sugars and organic acids, and secondary metabolism, including phenolic compounds. Interestingly, metabolomics is an emerging tool to better understand Prunus–PPV interactions mainly in primary and secondary metabolisms. Moreover, through untargeted metabolomics analyses, specific and early candidate biomarkers of PPV infection can be detected. Nevertheless, these candidate biomarkers need to be validated before being selected for a diagnostic or prognosis by targeted analyses. The development of a new method for early detection of PPV-infected trees would be crucial for better management of the outbreak, especially since there is no curative treatment.
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Affiliation(s)
- Christian Espinoza
- PSL Université de Paris EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, CEDEX, 66860 Perpignan, France; (C.E.); (B.B.)
- S.A.S. AkiNaO, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Benoît Bascou
- PSL Université de Paris EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, CEDEX, 66860 Perpignan, France; (C.E.); (B.B.)
| | - Christophe Calvayrac
- Biocapteurs-Analyses-Environnement, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, CEDEX, 66860 Perpignan, France;
- Laboratoire de Biodiversité et Biotechnologies Microbiennes, USR 3579 Sorbonne Universités (UMPC) Paris 6 et CNRS, Observatoire Océanologique, Banyuls-sur-Mer, CEDEX, 75005 Paris, France
| | - Cédric Bertrand
- PSL Université de Paris EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, CEDEX, 66860 Perpignan, France; (C.E.); (B.B.)
- S.A.S. AkiNaO, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, CEDEX, 66860 Perpignan, France
- Correspondence: ; Tel.: +33-(0)4-6866-2258
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Mori T, Warner C, Ohno S, Mori K, Tobimatsu T, Sera T. Genome sequence analysis of new plum pox virus isolates from Japan. BMC Res Notes 2021; 14:266. [PMID: 34246294 PMCID: PMC8272314 DOI: 10.1186/s13104-021-05683-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 07/05/2021] [Indexed: 12/04/2022] Open
Abstract
Objective To find mutations that may have recently occurred in Plum pox virus (PPV), we collected six PPV-infected plum/peach trees from the western part of Japan and one from the eastern part. After sequencing the full-length PPV genomic RNAs, we compared the amino acid sequences with representative isolates of each PPV strain. Results All new isolates were found to belong to the PPV-D strain: the six isolates collected from western Japan were identified as the West-Japan strain while the one collected from eastern Japan as the East-Japan strain. Amino acid sequence analysis of these seven isolates suggested that the 1407th and 1529th amino acid residues are characteristic of the West-Japan and the East-Japan strains, respectively. Comparing them with the corresponding amino acid residues of the 47 non-Japanese PPV-D isolates revealed that these amino acid residues are undoubtedly unique. A further examination of the relevant amino acid residues of the other 210 PPV-D isolates collected in Japan generated a new hypothesis regarding the invasion route from overseas and the subsequent diffusion route within Japan: a PPV-D strain might have invaded the western part of Japan from overseas and spread throughout Japan. Supplementary Information The online version contains supplementary material available at 10.1186/s13104-021-05683-9.
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Affiliation(s)
- Tomoaki Mori
- Department of Applied Chemistry and Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Chiaki Warner
- Department of Applied Chemistry and Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Serika Ohno
- Department of Applied Chemistry and Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Koichi Mori
- Department of Applied Chemistry and Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Takamasa Tobimatsu
- Department of Applied Chemistry and Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Takashi Sera
- Department of Applied Chemistry and Biotechnology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan.
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Ravelonandro M, Briard P, Scorza R, Callahan A, Zagrai I, Kundu JK, Dardick C. Robust Response to Plum pox virus Infection via Plant Biotechnology. Genes (Basel) 2021; 12:genes12060816. [PMID: 34071769 PMCID: PMC8227089 DOI: 10.3390/genes12060816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/20/2021] [Accepted: 05/25/2021] [Indexed: 12/23/2022] Open
Abstract
Our goal was to target silencing of the Plum pox virus coat protein (PPV CP) gene independently expressed in plants. Clone C-2 is a transgenic plum expressing CP. We introduced and verified, in planta, the effects of the inverse repeat of CP sequence split by a hairpin (IRSH) that was characterized in the HoneySweet plum. The IRSH construct was driven by two CaMV35S promoter sequences flanking the CP sequence and had been introduced into C1738 plum. To determine if this structure was enough to induce silencing, cross-hybridization was made with the C1738 clone and the CP expressing but PPV-susceptible C2 clone. In total, 4 out of 63 clones were silenced. While introduction of the IRSH is reduced due to the heterozygous character in C1738 plum, the silencing induced by the IRSH PPV CP is robust. Extensive studies, in greenhouse containment, demonstrated that the genetic resource of C1738 clone can silence the CP production. In addition, these were verified through the virus transgene pyramiding in the BO70146 BlueByrd cv. plum that successfully produced resistant BlueByrd BO70146 × C1738 (HybC1738) hybrid plums.
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Affiliation(s)
- Michel Ravelonandro
- UMR-BFP-1332, INRAE-Bordeaux, Bordeaux-UniversityII, 71 Avenue Bourleaux, 33883 Villenave d’Ornon, France;
- Correspondence:
| | - Pascal Briard
- UMR-BFP-1332, INRAE-Bordeaux, Bordeaux-UniversityII, 71 Avenue Bourleaux, 33883 Villenave d’Ornon, France;
| | - Ralph Scorza
- USDA-ARS Fruit Station, 2217 Wiltshire Road, Kearneysville, WV 25430, USA; (R.S.); (A.C.); (C.D.)
| | - Ann Callahan
- USDA-ARS Fruit Station, 2217 Wiltshire Road, Kearneysville, WV 25430, USA; (R.S.); (A.C.); (C.D.)
| | - Ioan Zagrai
- Fruit Research and Development Station Bistrita, Drumul Dumitrei Nou street, 420127 Bistrita, Romania;
| | - Jiban K. Kundu
- Crop Research Institute, Drnovska 507/73, 161 06 Praha, Czech Republic;
| | - Chris Dardick
- USDA-ARS Fruit Station, 2217 Wiltshire Road, Kearneysville, WV 25430, USA; (R.S.); (A.C.); (C.D.)
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Martínez-Turiño S, Calvo M, Bedoya LC, Zhao M, García JA. Virus Host Jumping Can Be Boosted by Adaptation to a Bridge Plant Species. Microorganisms 2021; 9:805. [PMID: 33920394 DOI: 10.3390/microorganisms9040805] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 12/20/2022] Open
Abstract
Understanding biological mechanisms that regulate emergence of viral diseases, in particular those events engaging cross-species pathogens spillover, is becoming increasingly important in virology. Species barrier jumping has been extensively studied in animal viruses, and the critical role of a suitable intermediate host in animal viruses-generated human pandemics is highly topical. However, studies on host jumping involving plant viruses have been focused on shifting intra-species, leaving aside the putative role of “bridge hosts” in facilitating interspecies crossing. Here, we take advantage of several VPg mutants, derived from a chimeric construct of the potyvirus Plum pox virus (PPV), analyzing its differential behaviour in three herbaceous species. Our results showed that two VPg mutations in a Nicotiana clevelandii-adapted virus, emerged during adaptation to the bridge-host Arabidopsis thaliana, drastically prompted partial adaptation to Chenopodium foetidum. Although both changes are expected to facilitate productive interactions with eIF(iso)4E, polymorphims detected in PPV VPg and the three eIF(iso)4E studied, extrapolated to a recent VPg:eIF4E structural model, suggested that two adaptation ways can be operating. Remarkably, we found that VPg mutations driving host-range expansion in two non-related species, not only are not associated with cost trade-off constraints in the original host, but also improve fitness on it.
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Sidorova T, Miroshnichenko D, Kirov I, Pushin A, Dolgov S. Effect of Grafting on Viral Resistance of Non-transgenic Plum Scion Combined With Transgenic PPV-Resistant Rootstock. Front Plant Sci 2021; 12:621954. [PMID: 33597963 PMCID: PMC7882617 DOI: 10.3389/fpls.2021.621954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/08/2021] [Indexed: 05/03/2023]
Abstract
In stone fruit trees, resistance to Plum pox virus (PPV) can be achieved through the specific degradation of viral RNA by the mechanism of RNA interference (RNAi). Transgenic virus-resistant plants, however, raise serious biosafety concerns due to the insertion and expression of hairpin constructs that usually contain various selective foreign genes. Since a mature stone tree represents a combination of scion and rootstock, grafting commercial varieties onto transgenic virus-tolerant rootstocks is a possible approach to mitigate biosafety problems. The present study was aimed at answering the following question: To what extent are molecular RNAi silencing signals transmitted across graft junctions in transgrafted plum trees and how much does it affect PPV resistance in genetically modified (GM)/non-transgenic (NT) counterparts? Two combinations, NT:GM and GM:NT (scion:rootstock), were studied, with an emphasis on the first transgrafting scenario. Viral inoculation was carried out on either the scion or the rootstock. The interspecific rootstock "Elita" [(Prunus pumila L. × P. salicina Lindl.) × (P. cerasifera Ehrh.)] was combined with cv. "Startovaya" (Prunus domestica L.) as a scion. Transgenic plum lines of both cultivars were transformed with a PPV-coat protein (CP)-derived intron-separate hairpin-RNA construct and displayed substantial viral resistance. High-throughput sequence data of small RNA (sRNA) pools indicated that the accumulation of construct-specific small interfering RNA (siRNA) in transgenic plum rootstock reached over 2%. The elevated siRNA level enabled the resistance to PPV and blocked the movement of the virus through the GM tissues into the NT partner when the transgenic tissues were inoculated. At the same time, the mobile siRNA signal was not moved from the GM rootstock to the target NT tissue to a level sufficient to trigger silencing of PPV transcripts and provide reliable viral resistance. The lack of mobility of transgene-derived siRNA molecules was accompanied by the transfer of various endogenous rootstock-specific sRNAs into the NT scion, indicating the exceptional transitivity failure of the studied RNAi signal. The results presented here indicate that transgrafting in woody fruit trees remains an unpredictable practice and needs further in-depth examination to deliver molecular silencing signals.
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Affiliation(s)
- Tatiana Sidorova
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Pushchino, Russia
- *Correspondence: Tatiana Sidorova,
| | - Dmitry Miroshnichenko
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Pushchino, Russia
- All-Russia Research Institute of Agricultural Biotechnology, Russian Academy of Science, Moscow, Russia
| | - Ilya Kirov
- All-Russia Research Institute of Agricultural Biotechnology, Russian Academy of Science, Moscow, Russia
| | - Alexander Pushin
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Pushchino, Russia
- All-Russia Research Institute of Agricultural Biotechnology, Russian Academy of Science, Moscow, Russia
| | - Sergey Dolgov
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Pushchino, Russia
- All-Russia Research Institute of Agricultural Biotechnology, Russian Academy of Science, Moscow, Russia
- Federal Horticulture Center for Breeding, Agrotechnology and Nursery, Moscow, Russia
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Sidorova T, Mikhailov R, Pushin A, Miroshnichenko D, Dolgov S. Agrobacterium-Mediated Transformation of Russian Commercial Plum cv. "Startovaya" ( Prunus domestica L.) With Virus-Derived Hairpin RNA Construct Confers Durable Resistance to PPV Infection in Mature Plants. Front Plant Sci 2019; 10:286. [PMID: 30915093 PMCID: PMC6423057 DOI: 10.3389/fpls.2019.00286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/20/2019] [Indexed: 05/19/2023]
Abstract
In modern horticulture Plum pox virus (PPV) imposes serious threats to commercial plantations of a wide range of fruit species belonging to genera Prunus. Given the lack of natural genetic resources, which display reliable resistance to PPV infection, there has been considerable interest in using genetic engineering methods for targeted genome modification of stone fruit trees to control Sharka disease caused by PPV. Among the many virus defense mechanisms, RNA interference is shown to be the most promising transgenic disease-control strategy in plant biotechnology. The present study describes the production of transgenic PPV resistant European plum "Startovaya" (P. domestica L.) through the Agrobacterium-mediated transformation of in vitro leaf explants. Due to organogenesis from leaves, the established protocol allows the genetic engineering of the plum genome without losing clonal fidelity of original cultivar. Seven independent transgenic plum lines containing the self-complementary fragments of PPV-CP gene sequence separated by a PDK intron were generated using hpt as a selective gene and uidA as a reporter gene. The transformation was verified through the histochemical staining for β-glucuronidase activity, PCR amplification of appropriate vector products from isolated genomic DNA and Southern blot analysis of hairpin PPV-CP gene fragments. To clarify the virus resistance, plum buds infected by PPV-M strain were grafted onto 1-year-old transgenic plants, which further were grown into mature trees in the greenhouse. As evaluated by RT-PCR, DAS-ELISA, Western blot, ImmunoStrip test, and visual observations, GM plum trees remained uninfected over 9 years. Infected branches that developed from grafted buds displayed obvious symptoms of Sharka disease over the years and maintained the high level of virus accumulation, whereby host transgenic trees had been constantly challenged with the pathogen. Since the virus was unable to spread to transgenic tissues, the stable expression of PPV-derived gene construct encoding intron-spliced hairpin RNAs provided a highly effective protection of plum trees against permanent viral infection. At the same time, this observation indicates the lack of the systemic spread of resistance from GM tissues to an infected plum graft even after years of joint growth.
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Affiliation(s)
- Tatiana Sidorova
- Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Puschino, Russia
- Nikita Botanical Gardens – National Scientific Centre, Russian Academy of Sciences, Yalta, Russia
| | - Roman Mikhailov
- Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Puschino, Russia
| | - Alexander Pushin
- Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Puschino, Russia
- Nikita Botanical Gardens – National Scientific Centre, Russian Academy of Sciences, Yalta, Russia
| | - Dmitry Miroshnichenko
- Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Puschino, Russia
- All-Russia Research Institute of Agricultural Biotechnology, Russian Academy of Science, Moscow, Russia
| | - Sergey Dolgov
- Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Puschino, Russia
- Nikita Botanical Gardens – National Scientific Centre, Russian Academy of Sciences, Yalta, Russia
- All-Russia Research Institute of Agricultural Biotechnology, Russian Academy of Science, Moscow, Russia
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Moustafa K, Cross J. Production, pomological and nutraceutical properties of apricot. J Food Sci Technol 2019; 56:12-23. [PMID: 30728542 DOI: 10.1007/s13197-018-3481-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/10/2018] [Accepted: 10/29/2018] [Indexed: 10/27/2022]
Abstract
Apricot (Prunus sp.) is an important fruit crop worldwide. Despite recent advances in apricot research, much is still to be done to improve its productivity and environmental adaptability. The availability of wild apricot germplasms with economically interesting traits is a strong incentive to increase research panels toward improving its economic, environmental and nutritional characteristics. New technologies and genomic studies have generated a large amount of raw data that the mining and exploitation can help decrypt the biology of apricot and enhance its agronomic values. Here, we outline recent findings in relation to apricot production, pomological and nutraceutical properties. In particular, we retrace its origin from central Asia and the path it took to attain Europe and other production areas around the Mediterranean basin while locating it in the rosaceae family and referring to its genetic diversities and new attempts of classification. The production, nutritional, and nutraceutical importance of apricot are recapped in an easy readable and comparable way. We also highlight and discuss the effects of late frost damages on apricot production over different growth stages, from swollen buds to green fruits formation. Issues related to the length of production season and biotic and abiotic environmental challenges are also discussed with future perspective on how to lengthen the production season without compromising the fruit quality and productivity.
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Sheveleva A, Ivanov P, Gasanova T, Osipov G, Chirkov S. Sequence Analysis of Plum pox virus Strain C Isolates from Russia Revealed Prevalence of the D96E Mutation in the Universal Epitope and Interstrain Recombination Events. Viruses 2018; 10:E450. [PMID: 30142962 PMCID: PMC6164383 DOI: 10.3390/v10090450] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/13/2018] [Accepted: 08/22/2018] [Indexed: 12/01/2022] Open
Abstract
The understanding of genetic diversity, geographic distribution, and antigenic properties of Plum pox virus (PPV) is a prerequisite to improve control of sharka, the most detrimental viral disease of stone fruit crops worldwide. Forty new PPV strain C isolates were detected in sour cherry (Prunus cerasus) from three geographically distant (700⁻1100 km) regions of European Russia. Analysis of their 3'-terminal genomic sequences showed that nineteen isolates (47.5%) bear the D96E mutation in the universal epitope of the coat protein. Almost all of them cannot be detected by the monoclonal antibody 5B in triple antibody sandwich enzyme-linked immunosorbent assayand Western blot analysis that may potentially compromise serological PPV detection in cherries. Full-length genomes of seven PPV-C isolates were determined employing next-generation sequencing. Using the Recombination Detection Program (RDP4), the recombination event covering the region from (Cter)P1 to the middle of the HcPro gene was predicted in all the available PPV-C complete genomes. The isolates Tat-4, belonging to the strain CV, and RU-17sc (PPV-CR) were inferred as major and minor parents, respectively, suggesting possible pathways of evolution of the cherry-adapted strains. Downy cherry (P. tomentosa) was identified as the natural PPV-C host for the first time.
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Affiliation(s)
- Anna Sheveleva
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow 119234, Russia.
| | - Peter Ivanov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow 119234, Russia.
| | - Tatiana Gasanova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow 119234, Russia.
| | - Gennady Osipov
- Tatar Research Institute of Agriculture, Kazan 420059, Russia.
| | - Sergei Chirkov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow 119234, Russia.
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Martínez‐Turiño S, Pérez JDJ, Hervás M, Navajas R, Ciordia S, Udeshi ND, Shabanowitz J, Hunt DF, García JA. Phosphorylation coexists with O-GlcNAcylation in a plant virus protein and influences viral infection. Mol Plant Pathol 2018; 19:1427-1443. [PMID: 29024291 PMCID: PMC5895533 DOI: 10.1111/mpp.12626] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 09/29/2017] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
Phosphorylation and O-GlcNAcylation are two widespread post-translational modifications (PTMs), often affecting the same eukaryotic target protein. Plum pox virus (PPV) is a member of the genus Potyvirus which infects a wide range of plant species. O-GlcNAcylation of the capsid protein (CP) of PPV has been studied extensively, and some evidence of CP phosphorylation has also been reported. Here, we use proteomics analyses to demonstrate that PPV CP is phosphorylated in vivo at the N-terminus and the beginning of the core region. In contrast with the 'yin-yang' mechanism that applies to some mammalian proteins, PPV CP phosphorylation affects residues different from those that are O-GlcNAcylated (serines Ser-25, Ser-81, Ser-101 and Ser-118). Our findings show that PPV CP can be concurrently phosphorylated and O-GlcNAcylated at nearby residues. However, an analysis using a differential proteomics strategy based on iTRAQ (isobaric tags for relative and absolute quantitation) showed a significant enhancement of phosphorylation at Ser-25 in virions recovered from O-GlcNAcylation-deficient plants, suggesting that crosstalk between O-GlcNAcylation and phosphorylation in PPV CP takes place. Although the preclusion of phosphorylation at the four identified phosphotarget sites only had a limited impact on viral infection, the mimicking of phosphorylation prevents PPV infection in Prunus persica and weakens infection in Nicotiana benthamiana and other herbaceous hosts, prompting the emergence of potentially compensatory second mutations. We postulate that the joint action of phosphorylation and O-GlcNAcylation in the N-proximal segment of CP allows a fine-tuning of protein stability, providing the amount of CP required in each step of viral infection.
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Affiliation(s)
- Sandra Martínez‐Turiño
- Department of Plant Molecular GeneticsCentro Nacional de Biotecnología (CNB‐CSIC), Campus Universidad Autónoma de MadridMadrid 28049Spain
| | - José De Jesús Pérez
- Department of Plant Molecular GeneticsCentro Nacional de Biotecnología (CNB‐CSIC), Campus Universidad Autónoma de MadridMadrid 28049Spain
- Present address:
División de Biología MolecularInstituto Potosino de Investigación Científica y Tecnológica A.C.Camino a la Presa San José 2055San Luis PotosíSLPMéxico
| | - Marta Hervás
- Department of Plant Molecular GeneticsCentro Nacional de Biotecnología (CNB‐CSIC), Campus Universidad Autónoma de MadridMadrid 28049Spain
| | - Rosana Navajas
- Proteomics UnitCentro Nacional de Biotecnología (CNB‐CSIC), ProteoRed ISCIIIMadrid 28049Spain
| | - Sergio Ciordia
- Proteomics UnitCentro Nacional de Biotecnología (CNB‐CSIC), ProteoRed ISCIIIMadrid 28049Spain
| | - Namrata D. Udeshi
- Department of ChemistryUniversity of VirginiaCharlottesvilleVA 22904USA
- Present address:
Proteomics Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Room 5033CambridgeMA 02142USA
| | | | - Donald F. Hunt
- Department of ChemistryUniversity of VirginiaCharlottesvilleVA 22904USA
| | - Juan Antonio García
- Department of Plant Molecular GeneticsCentro Nacional de Biotecnología (CNB‐CSIC), Campus Universidad Autónoma de MadridMadrid 28049Spain
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Chirkov S, Ivanov P, Sheveleva A, Kudryavtseva A, Mitrofanova I. Molecular characterization of Plum pox virus Rec isolates from Russia suggests a new insight into evolution of the strain. Virus Genes 2018; 54:328-332. [PMID: 29460128 DOI: 10.1007/s11262-018-1541-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 02/11/2018] [Indexed: 11/29/2022]
Abstract
Field isolates of Plum pox virus (PPV), belonging to the strain Rec, have been found for the first time in Russia. Full-size genomes of the isolates K28 and Kisl-1pl from myrobalan and plum, respectively, were sequenced on the 454 platform. Analysis of all known PPV-Rec complete genomes using the Recombination Detection Program (RDP4) revealed yet another recombination event in the 5'-terminal region. This event was detected by seven algorithms, implemented in the RDP4, with statistically significant P values and supported by a phylogenetic analysis with the bootstrap value of 87%. A putative PPV-M-derived segment, encompassing the C-terminus of the P1 gene and approximately two-thirds of the HcPro gene, is bordered by breakpoints at positions 760-940 and 1838-1964, depending on the recombinant isolate. The predicted 5'-distal breakpoint for the isolate Valjevka is located at position 2804. The Dideron (strain D) and SK68 (strain M) isolates were inferred as major and minor parents, respectively. Finding of another recombination event suggests more complex evolutionary history of PPV-Rec than previously assumed. Perhaps the first recombination event led to the formation of a PPV-D variant harboring the PPV-M-derived fragment within the 5'-proximal part of the genome. Subsequent recombination of its descendant with PPV-M in the 3'-proximal genomic region resulted in the emergence of the evolutionary successful strain Rec.
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Affiliation(s)
- Sergei Chirkov
- Lomonosov Moscow State University, Moscow, 119234, Russia.
| | - Peter Ivanov
- Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Anna Sheveleva
- Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Anna Kudryavtseva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Irina Mitrofanova
- Nikita Botanical Gardens - National Scientific Center, Yalta, 298648, Russia
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15
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Diaz-Vivancos P, Bernal-Vicente A, Cantabella D, Petri C, Hernández JA. Metabolomics and Biochemical Approaches Link Salicylic Acid Biosynthesis to Cyanogenesis in Peach Plants. Plant Cell Physiol 2017; 58:2057-2066. [PMID: 29036663 DOI: 10.1093/pcp/pcx135] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/05/2017] [Indexed: 05/10/2023]
Abstract
Despite the long-established importance of salicylic acid (SA) in plant stress responses and other biological processes, its biosynthetic pathways have not been fully characterized. The proposed synthesis of SA originates from chorismate by two distinct pathways: the isochorismate and phenylalanine (Phe) ammonia-lyase (PAL) pathways. Cyanogenesis is the process related to the release of hydrogen cyanide from endogenous cyanogenic glycosides (CNglcs), and it has been linked to plant plasticity improvement. To date, however, no relationship has been suggested between the two pathways. In this work, by metabolomics and biochemical approaches (including the use of [13C]-labeled compounds), we provide strong evidences showing that CNglcs turnover is involved, at least in part, in SA biosynthesis in peach plants under control and stress conditions. The main CNglcs in peach are prunasin and amygdalin, with mandelonitrile (MD), synthesized from phenylalanine, controlling their turnover. In peach plants MD is the intermediary molecule of the suggested new SA biosynthetic pathway and CNglcs turnover, regulating the biosynthesis of both amygdalin and SA. MD-treated peach plants displayed increased SA levels via benzoic acid (one of the SA precursors within the PAL pathway). MD also provided partial protection against Plum pox virus infection in peach seedlings. Thus, we propose a third pathway, an alternative to the PAL pathway, for SA synthesis in peach plants.
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Affiliation(s)
- Pedro Diaz-Vivancos
- Biotechnology of Fruit Trees Group, Department Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, 25. 30100 Murcia, Spain
| | - Agustina Bernal-Vicente
- Biotechnology of Fruit Trees Group, Department Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, 25. 30100 Murcia, Spain
| | - Daniel Cantabella
- Biotechnology of Fruit Trees Group, Department Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, 25. 30100 Murcia, Spain
| | - Cesar Petri
- Departamento de Producción Vegetal, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain
| | - José Antonio Hernández
- Biotechnology of Fruit Trees Group, Department Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, 25. 30100 Murcia, Spain
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16
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Aguilar E, Cutrona C, Del Toro FJ, Vallarino JG, Osorio S, Pérez-Bueno ML, Barón M, Chung BN, Canto T, Tenllado F. Virulence determines beneficial trade-offs in the response of virus-infected plants to drought via induction of salicylic acid. Plant Cell Environ 2017; 40:2909-2930. [PMID: 28718885 DOI: 10.1111/pce.13028] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 06/28/2017] [Accepted: 07/02/2017] [Indexed: 05/21/2023]
Abstract
It has been hypothesized that plants can get beneficial trade-offs from viral infections when grown under drought conditions. However, experimental support for a positive correlation between virus-induced drought tolerance and increased host fitness is scarce. We investigated whether increased virulence exhibited by the synergistic interaction involving Potato virus X (PVX) and Plum pox virus (PPV) improves tolerance to drought and host fitness in Nicotiana benthamiana and Arabidopsis thaliana. Infection by the pair PPV/PVX and by PPV expressing the virulence protein P25 of PVX conferred an enhanced drought-tolerant phenotype compared with single infections with either PPV or PVX. Decreased transpiration rates in virus-infected plants were correlated with drought tolerance in N. benthamiana but not in Arabidopsis. Metabolite and hormonal profiles of Arabidopsis plants infected with the different viruses showed a range of changes that positively correlated with a greater impact on drought tolerance. Virus infection enhanced drought tolerance in both species by increasing salicylic acid accumulation in an abscisic acid-independent manner. Viable offspring derived from Arabidopsis plants infected with PPV increased relative to non-infected plants, when exposed to drought. By contrast, the detrimental effect caused by the more virulent viruses overcame potential benefits associated with increased drought tolerance on host fitness.
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Affiliation(s)
- Emmanuel Aguilar
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, Madrid, 28040, Spain
| | - Carmen Cutrona
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, Madrid, 28040, Spain
| | - Francisco J Del Toro
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, Madrid, 28040, Spain
| | - José G Vallarino
- Departamento de Biología Molecular y Bioquímica, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-CSIC, Málaga, 2907, Spain
| | - Sonia Osorio
- Departamento de Biología Molecular y Bioquímica, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga-CSIC, Málaga, 2907, Spain
| | - María Luisa Pérez-Bueno
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Granada, 18008, Spain
| | - Matilde Barón
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Granada, 18008, Spain
| | - Bong-Nam Chung
- National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju, 55365, Republic of Korea
| | - Tomás Canto
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, Madrid, 28040, Spain
| | - Francisco Tenllado
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, Madrid, 28040, Spain
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Nicaise V, Candresse T. Plum pox virus capsid protein suppresses plant pathogen-associated molecular pattern (PAMP)-triggered immunity. Mol Plant Pathol 2017; 18:878-886. [PMID: 27301551 PMCID: PMC6638313 DOI: 10.1111/mpp.12447] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/01/2016] [Accepted: 06/10/2016] [Indexed: 05/20/2023]
Abstract
The perception of pathogen-associated molecular patterns (PAMPs) by immune receptors launches defence mechanisms referred to as PAMP-triggered immunity (PTI). Successful pathogens must suppress PTI pathways via the action of effectors to efficiently colonize their hosts. So far, plant PTI has been reported to be active against most classes of pathogens, except viruses, although this defence layer has been hypothesized recently as an active part of antiviral immunity which needs to be suppressed by viruses for infection success. Here, we report that Arabidopsis PTI genes are regulated upon infection by viruses and contribute to plant resistance to Plum pox virus (PPV). Our experiments further show that PPV suppresses two early PTI responses, the oxidative burst and marker gene expression, during Arabidopsis infection. In planta expression of PPV capsid protein (CP) was found to strongly impair these responses in Nicotiana benthamiana and Arabidopsis, revealing its PTI suppressor activity. In summary, we provide the first clear evidence that plant viruses acquired the ability to suppress PTI mechanisms via the action of effectors, highlighting a novel strategy employed by viruses to escape plant defences.
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Affiliation(s)
- Valerie Nicaise
- INRA, UMR 1332 BFP, CS 20032Villenave d'Ornon cedex33882France
- University of Bordeaux, UMR 1332 BFP, CS 20032Villenave d'Ornon cedex33882France
| | - Thierry Candresse
- INRA, UMR 1332 BFP, CS 20032Villenave d'Ornon cedex33882France
- University of Bordeaux, UMR 1332 BFP, CS 20032Villenave d'Ornon cedex33882France
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18
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Chirkov S, Ivanov P, Sheveleva A, Zakubanskiy A, Osipov G. New highly divergent Plum pox virus isolates infecting sour cherry in Russia. Virology 2017; 502:56-62. [PMID: 28006670 DOI: 10.1016/j.virol.2016.12.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 11/21/2022]
Abstract
Unusual Plum pox virus (PPV) isolates (named Tat isolates) were discovered on sour cherry (Prunus cerasus) in Russia. They failed to be recognized by RT-PCR using commonly employed primers specific to the strains C or CR (the only ones that proved able to infect sour cherry) as well as to the strains M and W. Some of them can be detected by RT-PCR using the PPV-D-specific primers P1/PD or by TAS-ELISA with the PPV-C-specific monoclonal antibody AC. Phylogenetic analysis of the 3'-terminal genomic region assigned the Tat isolates into the cluster of cherry-adapted strains. However, they grouped separately from the C and CR strains and from each other as well. The sequence divergence of the Tat isolates is comparable to the differences between the known PPV strains. They may represent new group(s) of cherry-adapted isolates which do not seem to belong to any known strain of the virus.
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19
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Chirkov S, Ivanov P, Sheveleva A, Kudryavtseva A, Prikhodko Y, Mitrofanova I. Occurrence and characterization of plum pox virus strain D isolates from European Russia and Crimea. Arch Virol 2015; 161:425-30. [PMID: 26530833 DOI: 10.1007/s00705-015-2658-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 10/21/2015] [Indexed: 10/22/2022]
Abstract
Numerous plum pox virus (PPV) strain D isolates have been found in geographically distant regions of European Russia and the Crimean peninsula on different stone fruit hosts. Phylogenetic analysis of their partial and complete genomes suggests multiple introductions of PPV-D into Russia. Distinct natural isolates from Prunus tomentosa were found to bear unique amino acid substitutions in the N-terminus of the coat protein (CP) that may contribute to the adaptation of PPV-D to this host. Serological analysis using the PPV-D-specific monoclonal antibody 4DG5 provided further evidence that mutations at positions 58 and 59 of the CP are crucial for antibody binding.
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Affiliation(s)
| | - Peter Ivanov
- Lomonosov Moscow State University, Moscow, Russia
| | | | - Anna Kudryavtseva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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Shan H, Pasin F, Valli A, Castillo C, Rajulu C, Carbonell A, Simón-Mateo C, García JA, Rodamilans B. The Potyviridae P1a leader protease contributes to host range specificity. Virology 2015; 476:264-270. [PMID: 25562450 DOI: 10.1016/j.virol.2014.12.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 11/24/2014] [Accepted: 12/07/2014] [Indexed: 11/24/2022]
Abstract
The P1a protein of the ipomovirus Cucumber vein yellowing virus is one of the self-cleavage serine proteases present in Potyviridae family members. P1a is located at the N-terminal end of the viral polyprotein, and is closely related to potyviral P1 protease. For its proteolytic activity, P1a requires a still unknown host factor; this might be linked to involvement in host specificity. Here we built a series of constructs and chimeric viruses to help elucidate the role of P1a cleavage in host range definition. We demonstrate that host-dependent separation of P1a from the remainder of the polyprotein is essential for suppressing RNA silencing defenses and for efficient viral infection. These findings support the role of viral proteases as important determinants in host adaptation.
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Affiliation(s)
- Hongying Shan
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Fabio Pasin
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain.
| | - Adrián Valli
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Carla Castillo
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Charukesi Rajulu
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Alberto Carbonell
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Carmen Simón-Mateo
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Juan Antonio García
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain.
| | - Bernardo Rodamilans
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, 28049 Madrid, Spain.
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Abstract
Plum pox virus (PPV), the causal agent of sharka disease, is one of the most studied plant viruses, and major advances in detection techniques, genome characterization and organization, gene expression, transmission, and the description of candidate genes involved in PPV resistance have been described. However, information concerning the plant response to PPV infection is very scarce. In this review, we provide an updated summary of the research carried out to date in order to elucidate how plants cope with PPV infection and their response at different levels, including the physiological, biochemical, proteomic, and genetic levels. Knowledge about how plants respond to PPV infection can contribute to the development of new strategies to cope with this disease. Due to the fact that PPV induces an oxidative stress in plants, the bio-fortification of the antioxidative defences, by classical or biotechnological approaches, would be a useful tool to cope with PPV infection. Nevertheless, there are still some gaps in knowledge related to PPV-plant interaction that remain to be filled, such as the effect of PPV on the hormonal profile of the plant or on the plant metabolome.
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Affiliation(s)
- María J Clemente-Moreno
- Ecophysiologie et génomique fonctionnelle de la vigne, ISVV, INRA, UMR 1287, 33140 Villenave d'Ornon, Bordeaux, France Fruit Trees Biotechnology Group, Department of Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia, PO Box 164, E-30100, Spain
| | - José A Hernández
- Fruit Trees Biotechnology Group, Department of Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia, PO Box 164, E-30100, Spain
| | - Pedro Diaz-Vivancos
- Fruit Trees Biotechnology Group, Department of Plant Breeding, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia, PO Box 164, E-30100, Spain
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22
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Zhang S, Ravelonandro M, Russell P, McOwen N, Briard P, Bohannon S, Vrient A. Rapid diagnostic detection of plum pox virus in Prunus plants by isothermal AmplifyRP(®) using reverse transcription-recombinase polymerase amplification. J Virol Methods 2014; 207:114-20. [PMID: 25010790 DOI: 10.1016/j.jviromet.2014.06.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/23/2014] [Accepted: 06/27/2014] [Indexed: 01/12/2023]
Abstract
Plum pox virus (PPV) causes the most destructive viral disease known as plum pox or Sharka disease in stone fruit trees. As an important regulated pathogen, detection of PPV is thus of critical importance to quarantine and eradication of the spreading disease. In this study, the innovative development of two AmplifyRP(®) tests is reported for a rapid isothermal detection of PPV using reverse transcription-recombinase polymerase amplification. In an AmplifyRP(®) test, all specific recombination and amplification reactions occur at a constant temperature without thermal cycling and the test results are either recorded in real-time with a portable fluorescence reader or displayed using a lateral flow strip contained inside an amplicon detection chamber. The major improvement of this assay is that the entire test from sample preparation to result can be completed in as little as 20min and can be performed easily both in laboratories and in the field. The results from this study demonstrated the ability of the AmplifyRP(®) technique to detect all nine PPV strains (An, C, CR, D, EA, M, Rec, T, or W). Among the economic benefits to pathogen surveys is the higher sensitivity of the AmplifyRP(®) to detect PPV when compared to the conventional ELISA and ImmunoStrip(®) assays. This is the first report describing the use of such an innovative technique to detect rapidly plant viruses affecting perennial crops.
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Affiliation(s)
- Shulu Zhang
- Agdia Inc., 52642 County Road 1, Elkhart, IN 46514, USA.
| | - Michel Ravelonandro
- UMR-1332, Biologie du Fruit et Pathologie, Virologie, INRA-Bordeaux, BP-81, CS20032, Villenave d'Ornon 33882, France
| | - Paul Russell
- Agdia Inc., 52642 County Road 1, Elkhart, IN 46514, USA
| | - Nathan McOwen
- Agdia Inc., 52642 County Road 1, Elkhart, IN 46514, USA
| | - Pascal Briard
- UMR-1332, Biologie du Fruit et Pathologie, Virologie, INRA-Bordeaux, BP-81, CS20032, Villenave d'Ornon 33882, France
| | | | - Albert Vrient
- Agdia Inc., 52642 County Road 1, Elkhart, IN 46514, USA
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