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Environmental effects on fine-scale spatial genetic structure in four Alpine keystone forest tree species

hal.structure.identifierResearch and Innovation Centre
hal.structure.identifierFaculty of Science and Technology
dc.contributor.authorMOSCA, Elena
hal.structure.identifierResearch and Innovation Centre
dc.contributor.authorDI PIERRO, Erica A
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBUDDE, Katharina B.
hal.structure.identifierDepartment of Plant Sciences
dc.contributor.authorNEALE, David B.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGONZÁLEZ-MARTÍNEZ, Santiago C.
dc.date.issued2018
dc.identifier.issn0962-1083
dc.description.abstractEnGenetic responses to environmental changes take place at different spatial scales. While the effect of environment on the distribution of species' genetic diversity at large geographical scales has been the focus of several recent studies, its potential effects on genetic structure at local scales are understudied. Environmental effects on fine-scale spatial genetic structure (FSGS) were investigated in four Alpine conifer species (five to eight populations per species) from the eastern Italian Alps. Significant FSGS was found for 11 of 25 populations. Interestingly, we found no significant differences in FSGS across species but great variation among populations within species, highlighting the importance of local environmental factors. Interannual variability in spring temperature had a small but significant effect on FSGS of Larix decidua, probably related to species-specific life history traits. For Abies alba, Picea abies and Pinus cembra, linear models identified spring precipitation as a potentially relevant climate factor associated with differences in FSGS across populations; however, models had low explanatory power and were strongly influenced by a P. cembra outlier population from a very dry site. Overall, the direction of the identified effects is according to expectations, with drier and more variable environments increasing FSGS. Underlying mechanisms may include climate-related changes in the variance of reproductive success and/or environmental selection of specific families. This study provides new insights on potential changes in local genetic structure of four Alpine conifers in the face of environmental changes, suggesting that new climates, through altering FSGS, may also have relevant impacts on plant microevolution.
dc.description.sponsorshipScénarios pour la dynamique de la biodiversité des forêts européennes sous changement global identifier les points de basculement micro-evolutifs - ANR-12-EBID-0003
dc.language.isoen
dc.publisherWiley
dc.subjectenvironmental change
dc.subjectalpine plants
dc.subject.enclimate
dc.subject.enfine-scale spatial genetic structure
dc.subject.ensingle nucleotide polymorphisms
dc.title.enEnvironmental effects on fine-scale spatial genetic structure in four Alpine keystone forest tree species
dc.typeArticle de revue
dc.identifier.doi10.1111/mec.14469
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalMolecular Ecology
bordeaux.page647-658
bordeaux.volume27
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-02621152
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02621152v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Ecology&rft.date=2018&rft.volume=27&rft.issue=3&rft.spage=647-658&rft.epage=647-658&rft.eissn=0962-1083&rft.issn=0962-1083&rft.au=MOSCA,%20Elena&DI%20PIERRO,%20Erica%20A&BUDDE,%20Katharina%20B.&NEALE,%20David%20B.&GONZ%C3%81LEZ-MART%C3%8DNEZ,%20Santiago%20C.&rft.genre=article


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