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eDNA-based survey of root-associated fungi in neotropical bromeliads

hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorLEROY, Celine
hal.structure.identifierLaboratoire de Recherche en Sciences Végétales [LRSV]
dc.contributor.authorMAES, Arthur Quymanh
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorLOUISANNA, Eliane
hal.structure.identifierInteractions Microbiennes dans la Rhizosphère et les Racines
dc.contributor.authorSÉJALON-DELMAS, Nathalie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorSCHIMANN, Heidy
dc.date.conference2022-06-07
dc.description.abstractEnOur understanding of host-microbiota interactions can have important implications for host health and fitness. In highly stressful habitats, root-associated fungi may be crucial for epiphytic (i.e. plants that grow on the surface of another plant) and lithophytic plants (i.e. plants that grow on rocks). However, in bromeliads, most of the root-associated fungal endophytes remain undescribed as well as the drivers that affect their interactions with the plants. We explored root-associated fungal communities in bromeliad species and their variations linked to plant ecology, ontogeny, and ant-plant interactions, by using ITS1 gene-based high-throughput sequencing and by characterizing fungal functional guilds. Overall, we found a dual association of mycorrhizal and non-mycorrhizal fungi. The ecology of the plant (epiphytic, lithophytic and terrestrial forms) among bromeliad species shaped both the taxonomic and the functional composition of fungal communities. Specifically, roots of epiphytic bromeliads had more endophytic fungi and dark septate endophytes and fewer mycorrhizal fungi than terrestrial and lithophytic bromeliads. In addition, we underlined changes in root-associated fungal communities linked to the ontogenic stage of bromeliads, with a prominence of mycorrhizal and lower dark septate endophyte fungi in the adults, as compared to juveniles. Finally, we evidenced that root-fungal community composition can be mediated by cross-kingdom interactions. Indeed, we found that the identity of the mutualistic ant species in ant-bromeliad interactions had a significant influence on the root-associated fungal diversity and community composition. Our results contribute to a fundamental knowledge base on different fungal groups in previously undescribed bromeliad plants. We evidenced that multiple biotic drivers had strong effects on root-associated fungal community that may enhance plant fitness in both stressful and nutrient-poor environments and may give more flexibility to the plants to adapt to changing environmental conditions.
dc.language.isoen
dc.title.eneDNA-based survey of root-associated fungi in neotropical bromeliads
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.conference.titleEuropean Conference of Tropical Ecology - The Future of tropical ecosystems - news insights and innovative methods
bordeaux.countryFR
bordeaux.conference.cityMontpellier
bordeaux.peerReviewedoui
hal.identifierhal-04072492
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.organizerSociety of Tropical Ecology
hal.conference.end2022-06-09
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04072492v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=LEROY,%20Celine&MAES,%20Arthur%20Quymanh&LOUISANNA,%20Eliane&S%C3%89JALON-DELMAS,%20Nathalie&SCHIMANN,%20Heidy&rft.genre=unknown


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