Afficher la notice abrégée

Increased fire frequency promotes stronger spatial genetic structure and natural selection at regional and local scales in Pinus halepensis Mill

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierDepartment of Forest Ecology and Genetics
dc.contributor.authorBUDDE, Katharina B.
hal.structure.identifierCentre de Biologie pour la Gestion des Populations [UMR CBGP]
dc.contributor.authorNAVASCUÉS, Miguel
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierDepartment of Forest Ecology and Genetics
dc.contributor.authorGONZALEZ MARTINEZ, Santiago C.
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
dc.contributor.authorBURGARELLA, Concetta
hal.structure.identifierFaculty of Science and Technology
dc.contributor.authorMOSCA, Elena
hal.structure.identifierDepartment of Forest Ecology and Genetics
dc.contributor.authorLORENZO, Zaida
hal.structure.identifierDepartment of Forest Ecology and Genetics
dc.contributor.authorZABAL-AGUIRRE, Mario
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorVENDRAMIN, Giovanni G.
hal.structure.identifierCentro de Investigaciones sobre Desertificacion [CIDE]
dc.contributor.authorVERDÚ, Miguel
hal.structure.identifierCentro de Investigaciones sobre Desertificacion [CIDE]
dc.contributor.authorPAUSAS, Juli G
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierDepartment of Forest Ecology and Genetics
dc.contributor.authorHEUERTZ, Myriam
dc.date.issued2017
dc.identifier.issn0305-7364
dc.description.abstractEnBackground and Aims The recurrence of wildfires is predicted to increase due to global climate change, resulting in severe impacts on biodiversity and ecosystem functioning. Recurrent fires can drive plant adaptation and reduce genetic diversity; however, the underlying population genetic processes have not been studied in detail. In this study, the neutral and adaptive evolutionary effects of contrasting fire regimes were examined in the keystone tree species Pinus halepensis Mill. (Aleppo pine), a fire-adapted conifer. The genetic diversity, demographic history and spatial genetic structure were assessed at local (within-population) and regional scales for populations exposed to different crown fire frequencies.Methods Eight natural P. halepensis stands were sampled in the east of the Iberian Peninsula, five of them in a region exposed to frequent crown fires (HiFi) and three of them in an adjacent region with a low frequency of crown fires (LoFi). Samples were genotyped at nine neutral simple sequence repeats (SSRs) and at 251 single nucleotide polymorphisms (SNPs) from coding regions, some of them potentially important for fire adaptation.Key Results Fire regime had no effects on genetic diversity or demographic history. Three high-differentiation outlier SNPs were identified between HiFi and LoFi stands, suggesting fire-related selection at the regional scale. At the local scale, fine-scale spatial genetic structure (SGS) was overall weak as expected for a wind-pollinated and wind-dispersed tree species. HiFi stands displayed a stronger SGS than LoFi stands at SNPs, which probably reflected the simultaneous post-fire recruitment of co-dispersed related seeds. SNPs with exceptionally strong SGS, a proxy for microenvironmental selection, were only reliably identified under the HiFi regime.Conclusions An increasing fire frequency as predicted due to global change can promote increased SGS with stronger family structures and alter natural selection in P. halepensis and in plants with similar life history traits.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectchangement climatique
dc.subjectincendie de forêt
dc.subjectbiodiversité
dc.subjectécosystème
dc.subjectdiversité génétique
dc.subjectcapacité d'adaptation
dc.subjectpinus halepensis
dc.subjectséquençage
dc.subject.engenetic diversity
dc.subject.enspatial genetic structure
dc.subject.endemographic history
dc.subject.ennatural selection
dc.subject.enfire ecology
dc.subject.englobal change
dc.subject.enforest fire
dc.subject.enecosystem
dc.subject.engenêtic variation
dc.subject.enaleppo pine
dc.title.enIncreased fire frequency promotes stronger spatial genetic structure and natural selection at regional and local scales in Pinus halepensis Mill
dc.typeArticle de revue
dc.identifier.doi10.1093/aob/mcw286
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.subject.halSciences de l'environnement/Environnement et Société
bordeaux.journalAnnals of Botany
bordeaux.page1061-1072
bordeaux.volume119
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-01603312
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01603312v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annals%20of%20Botany&rft.date=2017&rft.volume=119&rft.issue=6&rft.spage=1061-1072&rft.epage=1061-1072&rft.eissn=0305-7364&rft.issn=0305-7364&rft.au=BUDDE,%20Katharina%20B.&NAVASCU%C3%89S,%20Miguel&GONZALEZ%20MARTINEZ,%20Santiago%20C.&BURGARELLA,%20Concetta&MOSCA,%20Elena&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée