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Gene expression and genetic divergence in oak species highlight adaptive genes to soil water constraints

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLE PROVOST, Grégoire
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBRACHI, Benjamin
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierHelix Venture
dc.contributor.authorLESUR, Isabelle
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLALANNE, Céline
hal.structure.identifierGenoscope - Centre national de séquençage [Evry] [GENOSCOPE]
dc.contributor.authorLABADIE, Karine
hal.structure.identifierLaboratoire de Bioinformatique pour la Génomique et la Biodiversité [LBGB]
dc.contributor.authorAURY, Jean-Marc
hal.structure.identifierLaboratoire de Bioinformatique pour la Génomique et la Biodiversité [LBGB]
dc.contributor.authorDA SILVA, Corinne
hal.structure.identifierNational Institute for Research and Development in Forestry Marin Dracea
dc.contributor.authorPOSTOLACHE, Dragos
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
dc.contributor.authorLEROY, Thibault
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPLOMION, Christophe
dc.date.issued2022-09-07
dc.identifier.issn0032-0889
dc.description.abstractEnDrought and waterlogging impede tree growth and may even lead to tree death. Oaks, an emblematic group of tree species, have evolved a range of adaptations to cope with these constraints. The two most widely distributed European species, pedunculate (Quercus robur L.) and sessile oak (Quercus petraea Matt. Lieb), have overlapping ranges, but their respective distribution are highly constrained by local soil conditions. These contrasting ecological preferences between two closely related and frequently hybridizing species constitute a powerful model to explore the functional bases of the adaptive responses in oak. We exposed oak seedlings to waterlogging and drought, conditions typically encountered by the two species in their respective habitats, and studied changes in gene expression in roots using RNA-seq. We identified genes that change in expression between treatments differentially depending on species. These "species x environment"-responsive genes revealed adaptive molecular strategies involving adventitious and lateral root formation, aerenchyma formation in pedunculate oak, and osmoregulation and ABA regulation in sessile oak. With this experimental design, we also identified genes with different expression between species independently of water conditions imposed. Surprisingly, this category included genes with functions consistent with a role in intrinsic reproductive barriers. Finally, we compared our findings with those for a genome scan of species divergence and found that the expressional candidate genes included numerous highly differentiated genetic markers between the two species. By combining transcriptomic analysis, gene annotation, pathway analyses, as well as genome scan for genetic differentiation among species, we were able to highlight loci likely involved in adaptation of the two species to their respective ecological niches.
dc.language.isoen
dc.publisherOxford University Press ; American Society of Plant Biologists
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enOak
dc.subject.enExpression des genes
dc.subject.enQuercus
dc.title.enGene expression and genetic divergence in oak species highlight adaptive genes to soil water constraints
dc.typeArticle de revue
dc.identifier.doi10.1093/plphys/kiac420/6692722
dc.subject.halSciences de l'environnement
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des plantes
bordeaux.journalPlant Physiology
bordeaux.page2466-2483
bordeaux.volume190
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-03771214
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03771214v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20Physiology&rft.date=2022-09-07&rft.volume=190&rft.issue=4&rft.spage=2466-2483&rft.epage=2466-2483&rft.eissn=0032-0889&rft.issn=0032-0889&rft.au=LE%20PROVOST,%20Gr%C3%A9goire&BRACHI,%20Benjamin&LESUR,%20Isabelle&LALANNE,%20C%C3%A9line&LABADIE,%20Karine&rft.genre=article


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