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Rapid and multiregional adaptation to host partial resistance in a plant pathogenic oomycete: evidence from European populations of Plasmopara viticola, the causal agent of grapevine downy mildew

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELMOTTE, François
hal.structure.identifierSanté de la vigne et qualité du vin [SVQV]
dc.contributor.authorMESTRE, Pedro-Felipe
hal.structure.identifierSanté de la vigne et qualité du vin [SVQV]
dc.contributor.authorSCHNEIDER, Christophe Joseph
hal.structure.identifierStaatliches Weinbauinstitut
dc.contributor.authorKASSEMEYER, Hanns-Heinz
hal.structure.identifierUniversity of Pécs [Pécs, Hungary]
dc.contributor.authorKOZMA, Pal
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorRICHART-CERVERA, Sylvie
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorROUXEL, Mélanie
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELIERE, Laurent
dc.date.accessioned2024-04-08T12:33:07Z
dc.date.available2024-04-08T12:33:07Z
dc.date.issued2014
dc.identifier.issn1567-1348
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197175
dc.description.abstractEnCrop pathogens evolve rapidly to adapt to their hosts. The use of crops with quantitative disease resistance is expected to alter selection of pathogen life-history traits. This may result in differential adaptation of the pathogen to host cultivars and, sometimes, to the erosion of quantitative resistance. Here, we assessed the level of host adaptation in an oomycete plant pathogenic species. We analysed the phenotypic and genetic variability of 17 Plasmopara viticola isolates collected on Vitis vinifera and 35 isolates from partially resistant varieties (Regent and genotypes carrying the Rpv1 gene). Cross-inoculation experiments assessed two components of aggressiveness and a life-history trait of the pathogen: disease severity, sporangial production and sporangia size. The results contribute evidence to the emergence of P. viticola aggressive isolates presenting a high level of sporulation on the partially resistant Regent. By contrast, no adaptation to the Rpv1 gene was found in this study. The erosion of Regent resistance may have occurred in less than 5 years and at least three times independently in three distant wine-producing areas. Populations from resistant varieties showed a significant increase in sporangia production capacity, indicating an absence of fitness costs for this adaptation. The increase in the number of sporangia was correlated with a reduction in sporangia size, a result which illustrates how partial plant disease resistance can impact selection of the pathogen’s life-history traits. This case study on grapevine downy mildew shows how new plant pathogen populations emerge in agro-ecosystems by adapting to partial host resistance. This adaptive pattern highlights the need for wise management of plant partial disease resistance to ensure its sustainability over time.
dc.language.isoen
dc.publisherElsevier
dc.subject.enerosion of quantitative host resistance
dc.subject.enfungal plant pathogen
dc.subject.enaggressiveness
dc.subject.enlife-history traits
dc.subject.envitis vinifera
dc.subject.enregent grape cultivar
dc.title.enRapid and multiregional adaptation to host partial resistance in a plant pathogenic oomycete: evidence from European populations of Plasmopara viticola, the causal agent of grapevine downy mildew
dc.typeArticle de revue
dc.identifier.doi10.1016/j.meegid.2013.10.017
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalInfection, Genetics and Evolution
bordeaux.page500-508
bordeaux.volume27
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02632510
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02632510v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Infection,%20Genetics%20and%20Evolution&rft.date=2014&rft.volume=27&rft.spage=500-508&rft.epage=500-508&rft.eissn=1567-1348&rft.issn=1567-1348&rft.au=DELMOTTE,%20Fran%C3%A7ois&MESTRE,%20Pedro-Felipe&SCHNEIDER,%20Christophe%20Joseph&KASSEMEYER,%20Hanns-Heinz&KOZMA,%20Pal&rft.genre=article


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