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Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae)

hal.structure.identifierEcologie des forêts de Guyane [ECOFOG]
dc.contributor.authorSCOTTI-SAINTAGNE, Caroline
hal.structure.identifierDepartment of Ecology and Evolutionary Biology and Herbarium
dc.contributor.authorDICK, Christopher W.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCARON, Henri
hal.structure.identifierIstituto di Genetica Vegetale, Sezione di Firenze
dc.contributor.authorVENDRAMIN, Giovanni G.
hal.structure.identifierEcologie des forêts de Guyane [ECOFOG]
dc.contributor.authorTROISPOUX, Valérie
hal.structure.identifierEcologie des forêts de Guyane [ECOFOG]
dc.contributor.authorSIRE, Pierre
hal.structure.identifierEcologie des forêts de Guyane [ECOFOG]
dc.contributor.authorCASALIS, Maxime
hal.structure.identifierIstituto di Genetica Vegetale, Sezione di Firenze
dc.contributor.authorBUONAMICI, Anna
hal.structure.identifierEscuela de Ciencias Biológicas, Laboratorio de Ecología de Plantas
dc.contributor.authorVALENCIA, Renato
hal.structure.identifierLaboratório de Genética e Biologia Reprodutiva de Plantas
dc.contributor.authorLEMES, Maristerra R.
hal.structure.identifierEcologie des forêts de Guyane [ECOFOG]
dc.contributor.authorSCOTTI, Ivan
dc.date.issued2013
dc.identifier.issn0305-0270
dc.description.abstractEn[b]Aim[/b][br/] [br/] The phylogeographical history of Neotropical species can be difficult to reconstruct because of superimposed Neogene and Quaternary histories, and because of taxonomic uncertainty. We analysed range-wide genetic diversity in a widespread pioneer tree species, Jacaranda copaia (Aubl.) D. Don, to characterize phylogeographical structure, date the evolutionary relationships among lineages, and evaluate the role of dispersal and vicariance in establishing the present geographical range.[br/] [br/] [br/] [b]Location[/b][br/] [br/] Guiana Shield; central, southern and western Amazon Basin; Chocó region; Central America.[br/] [br/] [br/] [b]Methods[/b][br/] [br/] We analysed nine nuclear simple sequence repeat loci (nuSSR), eight chloroplast SSRs (cpSSR), and two cpDNA intergenic sequences in 341 adult trees. Genetic differentiation at nuSSRs was inferred using Bayesian clustering. Dating of chloroplast lineage divergence was obtained using a range of published mutation rates and Bayesian coalescence analyses. Population divergence dating was performed using an isolation-with-migration model for eight loci (one cp sequence and seven nuSSRs).[br/] [br/] [br/] [b]Results[/b][br/] [br/] Nuclear SSR variation identified three geographically overlapping clusters (nu-1, nu-2, nu-3). Twelve cpDNA haplotypes were clustered into two haplogroups (cp-1, cp-2) with the central Amazon harbouring the highest diversity. Molecular dating analysis suggests that cpDNA haplotype diversification started around the end of the Pliocene (2.61 Ma on average), whereas population divergence was more recent and occurred during the mid-Quaternary (point estimates between 357 and 436 ka).[br/] [br/] [br/] [b]Main conclusions[/b][br/] [br/] The genetic variation of J. copaia in the Neotropics was shaped mainly by Pleistocene events. Chloroplast diversity did not display the expected cis/trans Andean disjunction, indicating recent dispersal. Nuclear variation revealed that separate regions share a recent history, with a centre of diversity in the central Amazon Basin. The geographical pattern of diversity is congruent with the distribution of the two subspecies, J. copaia copaia and J. copaia spectabilis, and evidence of nuSSR admixture between the two taxa supports their classification as subspecies.
dc.language.isoen
dc.publisherWiley
dc.subject.enAmazonia
dc.subject.enBignoniaceae
dc.subject.encentre of diversity
dc.subject.endispersal
dc.subject.enhistorical biogeography
dc.subject.enNeotropics
dc.subject.enphylogeography
dc.subject.enPleistocene
dc.subject.entropical forest
dc.subject.envicariance
dc.title.enAmazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae)
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1365-2699.2012.02797.x
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.journalJournal of Biogeography
bordeaux.page707-719
bordeaux.volume40
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-01032410
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01032410v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Biogeography&rft.date=2013&rft.volume=40&rft.issue=4&rft.spage=707-719&rft.epage=707-719&rft.eissn=0305-0270&rft.issn=0305-0270&rft.au=SCOTTI-SAINTAGNE,%20Caroline&DICK,%20Christopher%20W.&CARON,%20Henri&VENDRAMIN,%20Giovanni%20G.&TROISPOUX,%20Val%C3%A9rie&rft.genre=article


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