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<title lang=en>Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae)</title>
<creator>Scotti-Saintagne, Caroline</creator>
<creator>Dick, Christopher W.</creator>
<creator>Caron, Henri</creator>
<creator>Vendramin, Giovanni G.</creator>
<creator>Troispoux, Valérie</creator>
<creator>Sire, Pierre</creator>
<creator>Casalis, Maxime</creator>
<creator>Buonamici, Anna</creator>
<creator>Valencia, Renato</creator>
<creator>Lemes, Maristerra R.</creator>
<creator>Scotti, Ivan</creator>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Department of Ecology and Evolutionary Biology and Herbarium ; University of Michigan [Ann Arbor]</contributor>
<contributor>Biodiversité, Gènes et Communautés ; Institut National de Recherche Agronomique</contributor>
<contributor>Istituto di Genetica Vegetale, Sezione di Firenze ; Consiglio Nazionale delle Ricerche [Roma] (CNR)</contributor>
<contributor>Escuela de Ciencias Biológicas, Laboratorio de Ecología de Plantas ; Pontificia Universidad Catolica del Ecuador</contributor>
<contributor>Laboratório de Genética e Biologia Reprodutiva de Plantas ; Instituto Nacional de Pesquisas da Amazônia</contributor>
<source>ISSN: 0305-0270</source>
<source>EISSN: 1365-2699</source>
<source>Journal of Biogeography</source>
<publisher>Wiley</publisher>
<identifier>hal-01032410</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01032410</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01032410</source>
<source>Journal of Biogeography, Wiley, 2013, 40 (4), pp.707-719. 〈10.1111/j.1365-2699.2012.02797.x〉</source>
<identifier>DOI : 10.1111/j.1365-2699.2012.02797.x</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2699.2012.02797.x</relation>
<language>en</language>
<subject lang=en>Amazonia</subject>
<subject lang=en>Bignoniaceae</subject>
<subject lang=en>centre of diversity</subject>
<subject lang=en>dispersal</subject>
<subject lang=en>historical biogeography</subject>
<subject lang=en>Neotropics</subject>
<subject lang=en>phylogeography</subject>
<subject lang=en>Pleistocene</subject>
<subject lang=en>tropical forest</subject>
<subject lang=en>vicariance</subject>
<subject>[SDV.SA] Life Sciences [q-bio]/Agricultural sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>[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.</description>
<date>2013</date>
</dc>
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