Dispersal and local persistence shape the genetic structure of a widespread Neotropical plant species with a patchy distribution

Página do item simplificado
dc.contributor.authorSantos Leal, Barbara Simoes [UNESP]
dc.contributor.authorGraciano, Vanessa Araujo [UNESP]
dc.contributor.authorNeves Chaves, Cleber Juliano [UNESP]
dc.contributor.authorPillaca Huacre, Luis Alberto
dc.contributor.authorHeuertz, Myriam
dc.contributor.authorPalma-Silva, Clarisse [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Nacl Mayor San Marcos
dc.contributor.institutionUniv Bordeaux
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2020-12-10T19:44:43Z
dc.date.available2020-12-10T19:44:43Z
dc.date.issued2019-08-16
dc.description.abstractBackground and Aims Isolated populations constitute an ideal laboratory to study the consequences of intra-specific divergence, because intrinsic incompatibilities are more likely to accumulate under reduced gene flow. Here, we use a widespread bromeliad with a patchy distribution, Pitcairnia lanuginosa, as a model to infer processes driving Neotropical diversification and, thus, to improve our understanding of the origin and evolutionary dynamics of biodiversity in this highly speciose region. Methods We assessed the timing of lineage divergence, genetic structural patterns and historical demography of P. lanuginosa, based on microsatellites, and plastid and nuclear sequence data sets using coalescent analyses and an Approximate Bayesian Computation framework. Additionally, we used species distribution models (SDMs) to independently estimate potential changes in habitat suitability. Key Results Despite morphological uniformity, plastid and nuclear DNA data revealed two distinct P. lanuginosa lineages that probably diverged through dispersal from the Cerrado to the Central Andean Yungas, following the final uplift of the Andes, and passed through long-term isolation with no evidence of migration. Microsatellite data indicate low genetic diversity and high levels of inbreeding within populations, and restricted gene flow among populations, which are likely to be a consequence of bottlenecks (or founder events), and high selfing rates promoting population persistence in isolation. SDMs showed a slight expansion of the suitable range for P. lanuginosa lineages during the Last Glacial Maximum, although molecular data revealed a signature of older divergence. Pleistocene climatic oscillations thus seem to have played only a minor role in the diversification of P. lanuginosa, which probably persisted through adverse conditions in riparian forests. Conclusions Our results imply drift as a major force shaping the evolution of P. lanuginosa, and suggest that dispersal events have a prominent role in connecting Neotropical open and forest biomes.en
dc.description.affiliationUniv Estadual Paulista, Dept Ecol, Inst Biociencias, BR-13506900 Sao Paulo, SP, Brazil
dc.description.affiliationUniv Nacl Mayor San Marcos, Dept Ecol, Museo Hist Nat, Lima 15072, Peru
dc.description.affiliationUniv Bordeaux, INRA, Biogeco, F-33610 Cestas, France
dc.description.affiliationUniv Estadual Campinas, Dept Biol Vegetal, Inst Biol, BR-13083862 Campinas, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Ecol, Inst Biociencias, BR-13506900 Sao Paulo, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipInvestissement d'Avenir grants of the ANR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipPro Reitoria de Pesquisa e Extensao/UNESP
dc.description.sponsorshipIdFAPESP: 2014/15588-6
dc.description.sponsorshipIdInvestissement d'Avenir grants of the ANR: CEBA:ANR-10-LABX-25-01
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdFAPESP: 2014/08087-0
dc.description.sponsorshipIdFAPESP: 2016/04396-4
dc.description.sponsorshipIdCNPq: 300819/2016-1
dc.format.extent499-512
dc.identifierhttp://dx.doi.org/10.1093/aob/mcz105
dc.identifier.citationAnnals Of Botany. Oxford: Oxford Univ Press, v. 124, n. 3, p. 499-512, 2019.
dc.identifier.doi10.1093/aob/mcz105
dc.identifier.issn0305-7364
dc.identifier.urihttp://hdl.handle.net/11449/196430
dc.identifier.wosWOS:000503880300016
dc.language.isoeng
dc.publisherOxford Univ Press
dc.relation.ispartofAnnals Of Botany
dc.sourceWeb of Science
dc.subjectBromeliads
dc.subjectdispersal events
dc.subjectNeotropical diversification
dc.subjectCentral Andean Yungas
dc.subjectCerrado
dc.subjectgenetic drift
dc.subjectphylogeography
dc.subjectPitcairnia lanuginosa Ruiz & Pav
dc.subjectriparian forests
dc.titleDispersal and local persistence shape the genetic structure of a widespread Neotropical plant species with a patchy distributionen
dc.typeArtigo
dcterms.licensehttp://www.oxfordjournals.org/access_purchase/self-archiving_policyb.html
dcterms.rightsHolderOxford Univ Press
unesp.author.orcid0000-0002-6322-3645[5]

Arquivos

Coleções

Artigos - Ecologia - IBRC