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Mining microbiome data to identify antagonists of grapevine downy mildew (Plasmopara viticola)

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorFOURNIER, Paola
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorPELLAN, Lucile
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorJASWA, Aarti
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorVALLANCE, Jessica
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCHANCEREL, Emilie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBONNARD, Olivier
hal.structure.identifierSanté des Écosystèmes Viticoles Économes en intraNts [UMT SEVEN]
dc.contributor.authorRAYNAL, Marc
hal.structure.identifierSanté des Écosystèmes Viticoles Économes en intraNts [UMT SEVEN]
dc.contributor.authorDEBORD, Christian
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLABARTHE, Simon
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELIERE, Laurent
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELMOTTE, François
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
dc.contributor.authorTHIS, Patrice
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorVACHER, Corinne
dc.date.conference2024-07-07
dc.description.abstractEnVineyards are home to a myriad of microorganisms that interact with each other and with the vines. Some microorganisms are plant pathogens, such as the oomycete Plasmopara viticola, causing grapevine downy mildew. Others have a positive effect on vine health, such as disease biocontrol agents. These beneficial plant-microbe and microbe-microbe interactions have gained more attention in recent years because they could represent an alternative to the use of fungicides in viticulture. The aim of the present study is to identify bacterial and fungal taxa naturally present in vineyard soil and grapevine leaves and significantly more abundant in plots with low susceptibility to downy mildew (DM), susceptibility being defined by the intensity and frequency of DM symptoms over several years. Seven pairs of vineyard plots with contrasting susceptibility to DM were selected on the basis of a long-term epidemiological survey conducted in the Bordeaux region by the IFV. In each plot, we sampled young leaves (at phenological stage of 2-3 spreading leaves) and surface soil (top 5 cm) before the first fungicide treatments of the growing season. We used metabarcoding approaches to explore the entire microbial community of the samples. Up to 1974 and 769 taxonomic units of bacteria and fungi respectively were identified. Using differential abundance analyses, we could identify taxa that were significantly more abundant in plots of vines with low susceptibility to DM. As perspectives, the antagonistic activity of these taxa will be studied experimentally to develop microbial biocontrol of downy mildew and move viticulture towards pesticide-free viticulture.
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.engrape-associated microorganisms
dc.subject.ensustainable viticulture
dc.subject.enpest management
dc.subject.enphyllosphere
dc.subject.enPlasmopara viticola
dc.title.enMining microbiome data to identify antagonists of grapevine downy mildew (Plasmopara viticola)
dc.title.enExploration des données sur le microbiome pour identifier les antagonistes du mildiou de la vigne (Plasmopara viticola)
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.conference.titleOpen GPB 2024 - Open Conference on Grapevine Physiology and Biotechnology
bordeaux.countryES
bordeaux.conference.cityLogrono La Riora
bordeaux.peerReviewedoui
hal.identifierhal-05296422
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2024-07-11
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05296422v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=FOURNIER,%20Paola&PELLAN,%20Lucile&JASWA,%20Aarti&VALLANCE,%20Jessica&CHANCEREL,%20Emilie&rft.genre=unknown


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