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Two main genetic clusters with high admixture between forest and cultivated chestnut (Castanea sativa Mill.) in France

hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorBOUFFARTIGUE, Cathy
hal.structure.identifierInstitut Technologique Forêt Cellulose Bois-construction Ameublement [FCBA]
dc.contributor.authorDEBILLE, Sandrine
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorFABREGUETTES, Olivier
hal.structure.identifierUniversidade de Santiago de Compostela [Spain] [USC ]
dc.contributor.authorCABRER, Ana Ramos
hal.structure.identifierUniversidade de Santiago de Compostela [Spain] [USC ]
dc.contributor.authorPEREIRA-LORENZO, Santiago
hal.structure.identifierGénétique Quantitative et Evolution - Le Moulon (Génétique Végétale) [GQE-Le Moulon]
dc.contributor.authorFLUTRE, Timothée
hal.structure.identifierInstitut Technologique Forêt Cellulose Bois-construction Ameublement [FCBA]
dc.contributor.authorHARVENGT, Luc
dc.date.issued2020
dc.identifier.issn1286-4560
dc.description.abstractEnAbstractKey messageA moderate genetic diversity, the absence of a significant genetic differentiation between wild and cultivated stands and a highly admixed genetic structure of sweet chestnut with two main clusters were observed in France using two different data sets with 10 and 18 microsatellites.ContextRenewed interest in European chestnut in France is focused on finding locally adapted populations partially resistant to ink disease and identifying local landraces.AimsWe genotyped trees to assess (i) the genetic diversity of wild and cultivated chestnut across most of its range in France, (ii) their genetic structure, notably in relation with the sampled regions, and (iii) to a lesser extent the relations between French chestnuts with 10 cultivated chestnuts from the Northwest of Spain that were previously classified in the Iberian or Italian groups.MethodsA total of 693 trees in 16 sampling regions in France were genotyped at 24 SSRs and 1401 trees in 17 sampling regions at 13 SSRs.ResultsGenetic diversity was moderate in most sampling regions, with redundancy between them. No significant differentiation was found between wild and cultivated chestnut. A genetic structure analysis with no a priori information found a low yet significant structure and identified two clusters at 18 SSRs. One cluster gathers trees from south-east France and Corsica (RPP1), and another cluster gathers trees from all other sampled regions (RPP2). A substructure was detected at 10 SSRs suggesting differentiation within both RPP1 and RPP2. RPP1 was split between south-east France and Corsica. RPP2 was split between northwest France, Aveyron, Pyrenees, and a last cluster gathering individuals from several other regions.ConclusionThe genetic structure within and between our sampling regions is likely the result of natural events (recolonization after the last glaciation) and human activities (migration and exchanges). These advances on our knowledge of chestnut genetic diversity and structure will benefit conservation and help our local partners’ valorization efforts.
dc.description.sponsorshipPlateforme d'Innovation " Forêt-Bois-Fibre-Biomasse du Futur " - ANR-10-EQPX-0016
dc.language.isoen
dc.publisherSpringer Nature (since 2011)/EDP Science (until 2010)
dc.subject.enCastanea sativaMill
dc.subject.enChestnut
dc.subject.enGenetic diversity
dc.subject.enGenetic structure
dc.subject.enMicrosatellite markers
dc.subject.enLandraces
dc.subject.enCastanea sativa Mill.
dc.title.enTwo main genetic clusters with high admixture between forest and cultivated chestnut (Castanea sativa Mill.) in France
dc.typeArticle de revue
dc.identifier.doi10.1007/s13595-020-00982-w
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
bordeaux.journalAnnals of Forest Science
bordeaux.page74
bordeaux.volume77
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-02924577
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02924577v1
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