Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil

Detalhes bibliográficos
Autor(a) principal: Pinheiro, Fbio
Data de Publicação: 2014
Outros Autores: Cozzolino, Salvatore, Draper, David, Barros, Fabio de, Felix, Leonardo P., Fay, Michael F., Palma-Silva, Clarisse [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1186/1471-2148-14-49
http://hdl.handle.net/11449/112783
Resumo: Background: Because of their fragmented nature, inselberg species are interesting biological models for studying the genetic consequences of disjoint populations. Inselbergs are commonly compared with oceanic islands, as most of them display a marked ecological isolation from the surrounding area. The isolation of these rock outcrops is reflected in the high number of recorded endemic species and the strong floristic differences between individual inselbergs and adjacent habitats. We examined the genetic connectivity of orchids Epidendrum cinnabarinum and E. secundum adapted to Neotropical inselbergs of northeastern Brazil. Our goals were to identify major genetic divergences or disjunctions across the range of the species and to investigate potential demographic and evolutionary mechanisms leading to lineage divergence in Neotropical mountain ecosystems.Results: Based on plastid markers, high genetic differentiation was found for E. cinnabarinum (F-ST = 0.644) and E. secundum (F-ST = 0.636). Haplotypes were not geographically structured in either taxon, suggesting that restricted gene flow and genetic drift may be significant factors influencing the diversification of these inselberg populations. Moreover, strong differentiation was found between populations over short spatial scales, indicating substantial periods of isolation among populations. For E. secundum, nuclear markers indicated higher gene flow by pollen than by seeds.Conclusions: The comparative approach adopted in this study contributed to the elucidation of patterns in both species. Our results confirm the ancient and highly isolated nature of inselberg populations. Both species showed similar patterns of genetic diversity and structure, highlighting the importance of seed-restricted gene flow and genetic drift as drivers of plant diversification in terrestrial islands such as inselbergs.
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spelling Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern BrazilBrazilian Atlantic ForestCaatingaChloroplast microsatellitesEpidendrum cinnabarinumEpidendrum secundumGenetic driftNuclear microsatellitesOrchidaceaeBackground: Because of their fragmented nature, inselberg species are interesting biological models for studying the genetic consequences of disjoint populations. Inselbergs are commonly compared with oceanic islands, as most of them display a marked ecological isolation from the surrounding area. The isolation of these rock outcrops is reflected in the high number of recorded endemic species and the strong floristic differences between individual inselbergs and adjacent habitats. We examined the genetic connectivity of orchids Epidendrum cinnabarinum and E. secundum adapted to Neotropical inselbergs of northeastern Brazil. Our goals were to identify major genetic divergences or disjunctions across the range of the species and to investigate potential demographic and evolutionary mechanisms leading to lineage divergence in Neotropical mountain ecosystems.Results: Based on plastid markers, high genetic differentiation was found for E. cinnabarinum (F-ST = 0.644) and E. secundum (F-ST = 0.636). Haplotypes were not geographically structured in either taxon, suggesting that restricted gene flow and genetic drift may be significant factors influencing the diversification of these inselberg populations. Moreover, strong differentiation was found between populations over short spatial scales, indicating substantial periods of isolation among populations. For E. secundum, nuclear markers indicated higher gene flow by pollen than by seeds.Conclusions: The comparative approach adopted in this study contributed to the elucidation of patterns in both species. Our results confirm the ancient and highly isolated nature of inselberg populations. Both species showed similar patterns of genetic diversity and structure, highlighting the importance of seed-restricted gene flow and genetic drift as drivers of plant diversification in terrestrial islands such as inselbergs.Prance Fellowship in Neotropical Botany under the Kew Latin American Research Fellowship Programme (KLARF)Systematics Research Fund (the Linnean Society)Systematics Research Fund (Systematics Association-UK)International Association for Plant TaxonomyConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)CPSFPInst Bot Nucl Pesquisa Orquidario Estado, BR-04301012 Sao Paulo, BrazilUniv Naples Federico II, Dipartimento Biol, I-80100 Naples, ItalyInst Plant Protect, Consiglio Nazl Ric, I-50019 Fiorentino, FI, ItalyUniv Tecn Particular Loja, Dept Ciencias Nat, Loja 1101608, EcuadorUniv Fed Paraiba, Dept Fitotecn, Lab Citogenet Vegetal, Areia, PB, BrazilRoyal Bot Gardens, Jodrell Lab, Richmond TW9 3DS, Surrey, EnglandUniv Estadual Paulista, Dept Ecol, Lab Ecol Mol, BR-13506900 Rio Claro, SP, BrazilUniv Estadual Paulista, Dept Ecol, Lab Ecol Mol, BR-13506900 Rio Claro, SP, BrazilCNPq: 471929/2006-9CNPq: 4905102013-2FAPESP: 06/54189-3FAPESP: 09/52725-3CPS2009/17411-8FAPESP: 09/15052-0Biomed Central Ltd.Inst Bot Nucl Pesquisa Orquidario EstadoUniv Naples Federico IIInst Plant ProtectUniv Tecn Particular LojaUniversidade Federal da Paraíba (UFPB)Royal Bot GardensUniversidade Estadual Paulista (Unesp)Pinheiro, FbioCozzolino, SalvatoreDraper, DavidBarros, Fabio deFelix, Leonardo P.Fay, Michael F.Palma-Silva, Clarisse [UNESP]2014-12-03T13:11:03Z2014-12-03T13:11:03Z2014-03-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15application/pdfhttp://dx.doi.org/10.1186/1471-2148-14-49Bmc Evolutionary Biology. London: Biomed Central Ltd, v. 14, 15 p., 2014.1471-2148http://hdl.handle.net/11449/11278310.1186/1471-2148-14-49WOS:000334462200001WOS000334462200001.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBMC Evolutionary Biology3.0271,656info:eu-repo/semantics/openAccess2023-10-19T06:05:55Zoai:repositorio.unesp.br:11449/112783Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:20:19.908453Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
title Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
spellingShingle Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
Pinheiro, Fbio
Brazilian Atlantic Forest
Caatinga
Chloroplast microsatellites
Epidendrum cinnabarinum
Epidendrum secundum
Genetic drift
Nuclear microsatellites
Orchidaceae
title_short Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
title_full Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
title_fullStr Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
title_full_unstemmed Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
title_sort Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil
author Pinheiro, Fbio
author_facet Pinheiro, Fbio
Cozzolino, Salvatore
Draper, David
Barros, Fabio de
Felix, Leonardo P.
Fay, Michael F.
Palma-Silva, Clarisse [UNESP]
author_role author
author2 Cozzolino, Salvatore
Draper, David
Barros, Fabio de
Felix, Leonardo P.
Fay, Michael F.
Palma-Silva, Clarisse [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Inst Bot Nucl Pesquisa Orquidario Estado
Univ Naples Federico II
Inst Plant Protect
Univ Tecn Particular Loja
Universidade Federal da Paraíba (UFPB)
Royal Bot Gardens
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Pinheiro, Fbio
Cozzolino, Salvatore
Draper, David
Barros, Fabio de
Felix, Leonardo P.
Fay, Michael F.
Palma-Silva, Clarisse [UNESP]
dc.subject.por.fl_str_mv Brazilian Atlantic Forest
Caatinga
Chloroplast microsatellites
Epidendrum cinnabarinum
Epidendrum secundum
Genetic drift
Nuclear microsatellites
Orchidaceae
topic Brazilian Atlantic Forest
Caatinga
Chloroplast microsatellites
Epidendrum cinnabarinum
Epidendrum secundum
Genetic drift
Nuclear microsatellites
Orchidaceae
description Background: Because of their fragmented nature, inselberg species are interesting biological models for studying the genetic consequences of disjoint populations. Inselbergs are commonly compared with oceanic islands, as most of them display a marked ecological isolation from the surrounding area. The isolation of these rock outcrops is reflected in the high number of recorded endemic species and the strong floristic differences between individual inselbergs and adjacent habitats. We examined the genetic connectivity of orchids Epidendrum cinnabarinum and E. secundum adapted to Neotropical inselbergs of northeastern Brazil. Our goals were to identify major genetic divergences or disjunctions across the range of the species and to investigate potential demographic and evolutionary mechanisms leading to lineage divergence in Neotropical mountain ecosystems.Results: Based on plastid markers, high genetic differentiation was found for E. cinnabarinum (F-ST = 0.644) and E. secundum (F-ST = 0.636). Haplotypes were not geographically structured in either taxon, suggesting that restricted gene flow and genetic drift may be significant factors influencing the diversification of these inselberg populations. Moreover, strong differentiation was found between populations over short spatial scales, indicating substantial periods of isolation among populations. For E. secundum, nuclear markers indicated higher gene flow by pollen than by seeds.Conclusions: The comparative approach adopted in this study contributed to the elucidation of patterns in both species. Our results confirm the ancient and highly isolated nature of inselberg populations. Both species showed similar patterns of genetic diversity and structure, highlighting the importance of seed-restricted gene flow and genetic drift as drivers of plant diversification in terrestrial islands such as inselbergs.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-03T13:11:03Z
2014-12-03T13:11:03Z
2014-03-15
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1186/1471-2148-14-49
Bmc Evolutionary Biology. London: Biomed Central Ltd, v. 14, 15 p., 2014.
1471-2148
http://hdl.handle.net/11449/112783
10.1186/1471-2148-14-49
WOS:000334462200001
WOS000334462200001.pdf
url http://dx.doi.org/10.1186/1471-2148-14-49
http://hdl.handle.net/11449/112783
identifier_str_mv Bmc Evolutionary Biology. London: Biomed Central Ltd, v. 14, 15 p., 2014.
1471-2148
10.1186/1471-2148-14-49
WOS:000334462200001
WOS000334462200001.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv BMC Evolutionary Biology
3.027
1,656
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15
application/pdf
dc.publisher.none.fl_str_mv Biomed Central Ltd.
publisher.none.fl_str_mv Biomed Central Ltd.
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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