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The reliability of leaf bioassays for predicting disease resistance on fruit: a case study on grapevine resistance to downy and powdery mildew

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorCALONNEC, Agnes
hal.structure.identifierSanté de la vigne et qualité du vin [SVQV]
dc.contributor.authorWIEDEMANN-MERDINOGLU, Sabine
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELIERE, Laurent
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorCARTOLARO, Philippe
hal.structure.identifierSanté de la vigne et qualité du vin [SVQV]
dc.contributor.authorSCHNEIDER, Christophe Joseph
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELMOTTE, François
dc.date.accessioned2024-04-08T12:31:20Z
dc.date.available2024-04-08T12:31:20Z
dc.date.issued2013
dc.identifier.issn0032-0862
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197068
dc.description.abstractEnThis study was designed to assess the reliability of grapevine leaf bioassays for predicting disease resistance on fruit in the field. The efficacy of various grapevine quantitative trait loci (QTLs) for conferring resistance to downy and powdery mildew was evaluated in bioassays and in a 2-year field experiment for downy mildew. The resistance genes studied were inherited from Muscadinia rotundifolia (Rpv1 and Run1) and from American Vitis species through cv. Regent (QTLRgP and QTLRgD). In bioassays, genotypes carrying Run1 blocked powdery mildew development at early stages. Genotypes combining Run1 with QTLRgP displayed no greater level of resistance. For downy mildew, genotypes carrying Rpv1 and/or QTLRgD were more resistant than the susceptible cv. Merlot, and showed a high level of leaf resistance in the field (<10% severity). Disease levels on bunches were much higher than those on leaves, with a high variability between Rpv1 genotypes (148%). A Bayesian decision theory framework predicted that an OIV-452 threshold of 5 in leaf bioassays allowed accurate selection of grapevine genotypes (P=0 center dot 83) with satisfactory disease severity on bunches. Therefore, this study validates that the use of early bioassays on leaves, as currently performed by grapevine breeders, ensures a satisfactory level of resistance to downy mildew of bunches in the field.
dc.language.isoen
dc.publisherWiley
dc.subjectperennial plant
dc.subjectPlasmopara viticola
dc.subject.enErysiphe necator
dc.subject.enmarker-assisted selection
dc.subject.enreceiver operating characteristic
dc.title.enThe reliability of leaf bioassays for predicting disease resistance on fruit: a case study on grapevine resistance to downy and powdery mildew
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1365-3059.2012.02667.x
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalPlant Pathology
bordeaux.page533-544
bordeaux.volume62
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.issue3
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02646236
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02646236v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Plant%20Pathology&amp;rft.date=2013&amp;rft.volume=62&amp;rft.issue=3&amp;rft.spage=533-544&amp;rft.epage=533-544&amp;rft.eissn=0032-0862&amp;rft.issn=0032-0862&amp;rft.au=CALONNEC,%20Agnes&amp;WIEDEMANN-MERDINOGLU,%20Sabine&amp;DELIERE,%20Laurent&amp;CARTOLARO,%20Philippe&amp;SCHNEIDER,%20Christophe%20Joseph&amp;rft.genre=article


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