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Maternal effects shape seed mycobiota in a foundation tree species (Quercus petraea)

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorFORT, Tania
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorVACHER, Corinne
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPAUVERT, Charlie
hal.structure.identifierBiological Sciences Department [BIOLOGICAL SCIENCES DEPARTMENT]
dc.contributor.authorZANNE, Amy
hal.structure.identifierOrganismal and Evolutionary Biological Research Programme [OEB]
dc.contributor.authorOVASKAINEN, Otso
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCAIGNARD, Thomas
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
dc.contributor.authorBARRET, Matthieu
hal.structure.identifierCenter for Health & Bioresources
dc.contributor.authorCOMPANT, Stéphane
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorHAMPE, Arndt
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
dc.date.issued2019
dc.date.conference2019
dc.description.abstractEnSeed microbial communities are composed of microorganisms vertically transmitted from the mother plant and horizontally transmitted from the surrounding environment during seed development. These microorganisms can have beneficial, neutral or detrimental effects on plant growth, health and fitness, and thus influence plant evolution and ecosystem function. Our aim was to unravel the processes shaping the microbiome of seeds in a foundation tree species, sessile oak (Quercus petraea). We focused on fungi as this group includes phytopathogenic agents known to influence seed survival. Confocal microscopy analyses revealed the presence of fungi in all seed tissues, including the embryo. Metabarcoding data combined with network inference methods showed the presence of plant pathogens, in association with mycoparasites. Seed mycobiota differed among sites with effects of both the elevation and valley but our analyses suggested that site-level abiotic selective pressures shaped the mycobiota in the seed microenvironment, rather than directly filtering the seed mycobiota. Although local adaptation of seed mycobiota was strong, we found significant variations of seed mycobiota richness and composition within populations. These inter-individual differences remained significant after seed fall, despite seed colonization by fungal species originating from the ground. This result indicate that both the environment and the mother tree phenotype structure seed mycobiota. This study sets a basis for future research proceeding along the tree life cycle to identify the seed extended phenotypic traits that control seedling growth and survival across environments.
dc.language.isoen
dc.subject.ennetwork inference
dc.subject.enendophyte
dc.subject.enphyllosphere
dc.subject.enspermosphere
dc.subject.enplant pathology
dc.subject.enevolutionary ecology
dc.subject.enmicrobial ecology
dc.subject.enmaternal effects
dc.title.enMaternal effects shape seed mycobiota in a foundation tree species (Quercus petraea)
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.pagenp
bordeaux.conference.titleSFR QuaSav
bordeaux.countryFR
bordeaux.conference.cityNA
bordeaux.peerReviewedoui
hal.identifierhal-02154443
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2019
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02154443v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2019&rft.spage=np&rft.epage=np&rft.au=FORT,%20Tania&VACHER,%20Corinne&PAUVERT,%20Charlie&ZANNE,%20Amy&OVASKAINEN,%20Otso&rft.genre=unknown


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