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Revealing microbial consortia that interfere with grapevine downy mildew through microbiome epidemiology.

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorFOURNIER, Paola
dc.contributor.authorPELLAN, Lucile
dc.contributor.authorJASWA, Aarti
dc.contributor.authorCAMBON, Marine
dc.contributor.authorCHATAIGNER, Alexandre
dc.contributor.authorBONNARD, Olivier
dc.contributor.authorRAYNAL, Marc
dc.contributor.authorDEBORD, Christian
dc.contributor.authorPOEYDEBAT, Charlotte
hal.structure.identifierPleiade, from patterns to models in computational biodiversity and biotechnology [PLEIADE]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLABARTHE, Simon
dc.contributor.authorDELMOTTE, François
dc.contributor.authorTHIS, Patrice
hal.structure.identifierInstitut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement [INRAE]
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorVACHER, Corinne
dc.date.conference2025-01-13
dc.description.abstractEnBackground Plant and soil microbiomes can interfere with pathogen life cycles, but their influence on disease epidemiology remains understudied. Here, we analyzed the relationships between plant and soil microbiomes and long-term epidemiological records of grapevine downy mildew, a major disease caused by the oomycete Plasmopara viticola. Results We found that certain microbial taxa were consistently more abundant in plots with lower susceptibility to the disease and that microbial community composition could predict disease susceptibility. Microbial diversity was not strongly linked to epidemiological records, suggesting that susceptibility is more related to the abundance of specific microbial taxa. These key taxa were identified in the topsoil, where the pathogen’s oospores overwinter, and in the phyllosphere, where zoospores infect leaves. By contrast, the leaf endosphere, where the pathogen’s mycelium develops, contained few taxa of interest. Surprisingly, the soil microbiota was a better predictor of downy mildew symptoms than the leaf microbiota, suggesting a significant role of the soil microbiome in this primarily aerial disease. Conclusion Our study integrates long-term epidemiological data with microbiome profiles of healthy plants to reveal fungi and bacteria relevant for the biocontrol of grapevine downy mildew. The resulting database provides a valuable resource for designing microbial consortia with potential biocontrol activity. The framework can be applied to other crop systems to guide the development of biocontrol strategies and reduce pesticide use in agriculture.
dc.language.isoen
dc.titleRevealing microbial consortia that interfere with grapevine downy mildew through microbiome epidemiology.
dc.title.enRévéler les consortiums microbiens qui interfèrent avec le mildiou de la vigne grâce à l'épidémiologie du microbiome.
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.conference.title17e rencontres Plantes-Bactéries 2025
bordeaux.countryFR
bordeaux.conference.cityAussois
bordeaux.peerReviewedoui
hal.identifierhal-05290878
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2025-01-17
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05290878v1
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