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High rates of gene flow by pollen and seed in oak populations across Europe

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGERBER, Sophie
hal.structure.identifierGénétique et Amélioration des Fruits et Légumes [GAFL]
dc.contributor.authorCHADOEUF, Joel
hal.structure.identifierSwiss Federal Institute for Forest, Snow and Landscape Research WSL
dc.contributor.authorGUGERLI, Felix
hal.structure.identifierUppsala University
dc.contributor.authorLASCOUX, Martin
hal.structure.identifierWageningen University and Research Centre [WUR]
dc.contributor.authorBUITEVELD, Joukje
hal.structure.identifierForest Research, Northern Research Station
dc.contributor.authorCOTTRELL, Joan
hal.structure.identifierSwiss Federal Institute for Forest, Snow and Landscape Research WSL
dc.contributor.authorDOUNAVI, Aikaterini
hal.structure.identifierNational Research Council of Italy | Consiglio Nazionale delle Ricerche [CNR]
dc.contributor.authorFINESCHI, Silvia
hal.structure.identifierForest Research, Northern Research Station
dc.contributor.authorFORREST, Laura L.
hal.structure.identifierUppsala University
dc.contributor.authorFOGELQVIST, Johan
hal.structure.identifierInstituto Vasco de Investigación y Desarrollo Agrario [Derio] [NEIKER]
dc.contributor.authorGOICOECHEA, Pablo G.
hal.structure.identifierUniversity of Copenhagen = Københavns Universitet [UCPH]
dc.contributor.authorSVEJGAARD JENSEN, Jan
hal.structure.identifierUniversity of Copenhagen = Københavns Universitet [UCPH]
dc.contributor.authorSALVINI, Daniela
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorVENDRAMIN, Giovanni G.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorKREMER, Antoine
dc.date.issued2014
dc.identifier.issn1932-6203
dc.description.abstractEnGene flow is a key factor in the evolution of species, influencing effective population size, hybridisation and local adaptation. We analysed local gene flow in eight stands of white oak (mostly Quercus petraea and Q. robur, but also Q. pubescens and Q. faginea) distributed across Europe. Adult trees within a given area in each stand were exhaustively sampled (range [239, 754], mean 423), mapped, and acorns were collected ([17,147], 51) from several mother trees ([3], [47], 23). Seedlings ([65,387], 178) were harvested and geo-referenced in six of the eight stands. Genetic information was obtained from screening distinct molecular markers spread across the genome, genotyping each tree, acorn or seedling. All samples were thus genotyped at 5–8 nuclear microsatellite loci. Fathers/parents were assigned to acorns and seedlings using likelihood methods. Mating success of male and female parents, pollen and seed dispersal curves, and also hybridisation rates were estimated in each stand and compared on a continental scale. On average, the percentage of the wind-borne pollen from outside the stand was 60%, with large variation among stands (21–88%). Mean seed immigration into the stand was 40%, a high value for oaks that are generally considered to have limited seed dispersal. However, this estimate varied greatly among stands (20–66%). Gene flow was mostly intraspecific, with large variation, as some trees and stands showed particularly high rates of hybridisation. Our results show that mating success was unevenly distributed among trees. The high levels of gene flow suggest that geographically remote oak stands are unlikely to be genetically isolated, questioning the static definition of gene reserves and seed stands.
dc.language.isoen
dc.publisherPublic Library of Science
dc.title.enHigh rates of gene flow by pollen and seed in oak populations across Europe
dc.typeArticle de revue
dc.identifier.doi10.1371/journal.pone.0085130
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.journalPLoS ONE
bordeaux.page16 p.
bordeaux.volume9
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02640758
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02640758v1
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