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hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorSOULARUE, Jean-Paul
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorKREMER, Antoine
dc.date.issued2012
dc.identifier.issn1471-2148
dc.description.abstractEnBackground: On-going climate change is shifting the timing of bud burst (TBB) of broad leaf and conifer trees in temperate areas, raising concerns about the abilities of natural populations to respond to these shifts. The level of expected evolutionary change depends on the level and distribution of genetic variation of TBB. While numerous experimental studies have highlighted the role of divergent selection in promoting clinal TBB differentiation, we explored whether the observed patterns of variation could be generated by the joint effects of assortative mating for TBB and gene flow among natural populations. We tested this hypothesis using an in silico approach based on quantitative genetic models. Results: Our simulations showed that genetic clines can develop even without divergent selection. Assortative mating in association with environmental gradients substantially shifted the mean genetic values of populations. Owing to assortative mating, immigrant alleles were screened for proximal or distant populations depending on the strength of the environmental cline. Furthermore, we confirmed that assortative mating increases the additive genetic variance within populations. However, we observed also a rapid decline of the additive genetic variance caused by restricted gene flow between neighboring populations resulting from preferential matings between phenologically-matching phenotypes. Conclusions: We provided evidence that the patterns of genetic variation of phenological traits observed in forest trees can be generated solely by the effects of assortative mating and gene flow. We anticipate that predicted temperature increases due to climate change will further enhance genetic differentiation across the landscape. These trends are likely to be reinforced or counteracted by natural selection if phenological traits are correlated to fitness.
dc.language.isoen
dc.publisherBioMed Central
dc.title.enAssortative mating and gene flow generate clinal phenological variation in trees
dc.typeArticle de revue
dc.identifier.doi10.1186/1471-2148-12-79
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalBMC Evolutionary Biology
bordeaux.page30 p.
bordeaux.volume12
bordeaux.issue79
bordeaux.peerReviewedoui
hal.identifierhal-02650901
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02650901v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=BMC%20Evolutionary%20Biology&rft.date=2012&rft.volume=12&rft.issue=79&rft.spage=30%20p.&rft.epage=30%20p.&rft.eissn=1471-2148&rft.issn=1471-2148&rft.au=SOULARUE,%20Jean-Paul&KREMER,%20Antoine&rft.genre=article


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