Mostrar el registro sencillo del ítem

Berry cuticular and secondary compounds changes following heat stress contribute to resistance against Botrytis cinerea in grapevine

hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
dc.contributor.authorCHAVONET, Erwan
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMIRANDE-NEY, Cathleen
hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
dc.contributor.authorBERNARDO, Sarah
hal.structure.identifierAuteur indépendant
dc.contributor.authorGUINAND, Clément
hal.structure.identifierBIOlogie et GEstion des Risques en agriculture [BIOGER]
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorDELESTRE, Ghislain
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorZHAN, Xi
hal.structure.identifierPlateforme Bordeaux Metabolome
dc.contributor.authorVALLS, Josep
hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
hal.structure.identifierPlateforme Bordeaux Metabolome
dc.contributor.authorVAN DELFT, Pierre
hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
dc.contributor.authorJOUBÈS, Jérôme
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorLECOURIEUX, David
hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
dc.contributor.authorDOMERGUE, Frédéric
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorFERMAUD, Marc
dc.date.conference2025-05-25
dc.description.abstractEnVineyards are facing an increase in annual heat waves due to climate change which can interfere with grapevine diseases, and thus with wine quality and/or production. In addition, common practices, notably leaf removal, expose bunches to higher temperatures, particularly during fruit ripening. Such temperature rises modify berry metabolism and potentially the susceptibility to grapevine fungal diseases, such as gray mold caused by Botrytis cinerea (Bc). This fungus, by infecting berries in post-veraison stages, can reduce severely both yield and wine quality. Our research on fruiting cuttings endeavors to elucidate the intricate interplay between heat stress (HS; + 10°C) and tolerance to subsequent Bc infection. To reproduce vineyard microclimate, HS was applied focusing onto the bunch only, at herbaceous stage in Cabernet Sauvignon (CS) and Merlot (M). In vitro test, on detached berries inoculated 22 days post-HS, revealed an enhanced tolerance for CS berries stressed. However M berries, more tolerant than CS ones, were not affected significantly by HS. These results highlight a clear berry response to infection depending on both genetic background and the HS exposure. Based on the major result that fruit ripening (mid-veraison onset, sugar accumulation) and physiology (berry weight and volume) were unaltered significantly following HS, we investigated further the accumulation of preformed defense compounds and fruit physical barriers. We performed berry cuticle composition analyses (i.e. waxes and cutins), skin antifungal tannins assessment and entire-berry metabolomics, assuming that the compounds quantified could potentially account for the heat-induced tolerance. Although a clear difference in metabolites content between CS and M, we highlighted within CS the potential key role of both cutin monomers and skin condensed tannins in the heat-induced tolerance against Bc. Moreover, untargeted metabolomics revealed a range of unfamiliar compounds whose accumulation were potentially contributing to an increased resistance to the pathogen.
dc.description.sponsorshipMetaboHUB National Infrastructure of metabolomics and fluxomics - ANR-24-INBS-0012
dc.language.isoen
dc.title.enBerry cuticular and secondary compounds changes following heat stress contribute to resistance against Botrytis cinerea in grapevine
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halSciences du Vivant [q-bio]
bordeaux.conference.titleInternational Symposium on Plant Pathogenic Sclerotiniaceae
bordeaux.countryGR
bordeaux.conference.cityThessalonique
bordeaux.peerReviewedoui
hal.identifierhal-05282756
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2025-05-30
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05282756v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=CHAVONET,%20Erwan&MIRANDE-NEY,%20Cathleen&BERNARDO,%20Sarah&GUINAND,%20Cl%C3%A9ment&DELESTRE,%20Ghislain&rft.genre=conference


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem