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

hal.structure.identifierCentro de Investigacion Forestal [INIA-CIFOR]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBUDDE, Katharina
hal.structure.identifierCentro de Investigacion Forestal [INIA-CIFOR]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGONZALEZ MARTINEZ, Santiago C.
hal.structure.identifierCentre de Biologie pour la Gestion des Populations [UMR CBGP]
dc.contributor.authorNAVASCUÉS, Miguel
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
dc.contributor.authorBURGARELLA, Concetta
hal.structure.identifierFree University of Bozen-Bolzano
dc.contributor.authorMOSCA, Elena
hal.structure.identifierCentro de Investigacion Forestal [INIA-CIFOR]
dc.contributor.authorLORENZO, Zaida
hal.structure.identifierCentro de Investigacion Forestal [INIA-CIFOR]
dc.contributor.authorZABAL-AGUIRRE, Mario
hal.structure.identifierIstituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
dc.contributor.authorVENDRAMIN, Giovanni
hal.structure.identifierCentro de Investigaciones sobre Desertificacion [CIDE]
dc.contributor.authorVERDÚ, Miguel
hal.structure.identifierCentro de Investigaciones sobre Desertificacion [CIDE]
dc.contributor.authorPAUSAS, Juli
hal.structure.identifierCentro de Investigacion Forestal [INIA-CIFOR]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorHEUERTZ, Myriam
dc.date.issued2017-04
dc.identifier.issn0305-7364
dc.description.abstractEn. Background 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.subject.engenetic diversity
dc.subject.enspatial genetic structure
dc.subject.endemographic history
dc.subject.ennatural selection
dc.subject.enfire ecology
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 du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
dc.subject.halSciences de l'environnement/Milieux et Changements globaux
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des plantes
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des populations [q-bio.PE]
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=2017-04&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&GONZALEZ%20MARTINEZ,%20Santiago%20C.&NAVASCU%C3%89S,%20Miguel&BURGARELLA,%20Concetta&MOSCA,%20Elena&rft.genre=article


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