The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia

Considered a biodiversity hotspot, the Canary Islands have been the key subjects of numerous evolutionary studies concerning a large variety of organisms. The genus Cheirolophus (Asteraceae) represents one of the largest plant radiations in the Canarian archipelago. In contrast, only a few species o...

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Autores: Vitales Serrano, Daniel, Garnatje i Roca, Teresa, Pellicer Moscardó, Jaume, Vallès Xirau, Joan, 1959-, Santos Guerra, Arnoldo, Sanmartín, Isabel
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/59198
Acesso em linha:https://hdl.handle.net/2445/59198
Access Level:acceso abierto
Palavra-chave:Filogeografia
Macaronèsia
Radiació
Phylogeography
Macaronesia
Radiation
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spelling The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in MacaronesiaVitales Serrano, DanielGarnatje i Roca, TeresaPellicer Moscardó, JaumeVallès Xirau, Joan, 1959-Santos Guerra, ArnoldoSanmartín, IsabelFilogeografiaMacaronèsiaRadiacióPhylogeographyMacaronesiaRadiationConsidered a biodiversity hotspot, the Canary Islands have been the key subjects of numerous evolutionary studies concerning a large variety of organisms. The genus Cheirolophus (Asteraceae) represents one of the largest plant radiations in the Canarian archipelago. In contrast, only a few species occur in the Mediterranean region, the putative ancestral area of the genus. Here, our main aim was to reconstruct the phylogenetic and biogeographic history of Cheirolophus with special focus on explaining the origin of the large Canarian radiation. Results: We found significant incongruence in phylogenetic relationships between nuclear and plastid markers. Each dataset provided resolution at different levels in Cheirolophus: the nuclear markers resolved the backbone of the phylogeny while the plastid data provided better resolution within the Canarian clade. The origin of Cheirolophus was dated in the Mid-Late Miocene, followed by rapid diversification into the three main Mediterranean lineages and the Macaronesian clade. A decrease in diversification rates was inferred at the end of the Miocene, with a new increase in the Late Pliocene concurrent with the onset of the Mediterranean climate. Diversification within the Macaronesian clade started in the Early-Mid Pleistocene, with unusually high speciation rates giving rise to the extant insular diversity. Conclusions: Climate-driven diversification likely explains the early evolutionary history of Cheirolophus in the Mediterranean region. It appears that the exceptionally high diversification rate in the Canarian clade was mainly driven by allopatric speciation (including intra-and interisland diversification). Several intrinsic (e.g. breeding system, polyploid origin, seed dispersal syndrome) and extrinsic (e.g. fragmented landscape, isolated habitats, climatic and geological changes) factors probably contributed to the progressive differentiation of populations resulting in numerous microendemisms. Finally, hybridization events and emerging ecological adaptation may have also reinforced the diversification process.BioMed Central2014201420142014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion15 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/59198Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: http://dx.doi.org/10.1186/1471-2148-14-118BMC Evolutionary Biology, 2014, vol. 14, num. 118http://dx.doi.org/10.1186/1471-2148-14-118cc-by (c) Vitales Serrano, Daniel et al., 2014http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/591982026-05-29T05:05:01Z
dc.title.none.fl_str_mv The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
title The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
spellingShingle The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
Vitales Serrano, Daniel
Filogeografia
Macaronèsia
Radiació
Phylogeography
Macaronesia
Radiation
title_short The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
title_full The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
title_fullStr The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
title_full_unstemmed The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
title_sort The explosive radiation of Cheirolophus (Asteraceae, Cardueae) in Macaronesia
dc.creator.none.fl_str_mv Vitales Serrano, Daniel
Garnatje i Roca, Teresa
Pellicer Moscardó, Jaume
Vallès Xirau, Joan, 1959-
Santos Guerra, Arnoldo
Sanmartín, Isabel
author Vitales Serrano, Daniel
author_facet Vitales Serrano, Daniel
Garnatje i Roca, Teresa
Pellicer Moscardó, Jaume
Vallès Xirau, Joan, 1959-
Santos Guerra, Arnoldo
Sanmartín, Isabel
author_role author
author2 Garnatje i Roca, Teresa
Pellicer Moscardó, Jaume
Vallès Xirau, Joan, 1959-
Santos Guerra, Arnoldo
Sanmartín, Isabel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Filogeografia
Macaronèsia
Radiació
Phylogeography
Macaronesia
Radiation
topic Filogeografia
Macaronèsia
Radiació
Phylogeography
Macaronesia
Radiation
description Considered a biodiversity hotspot, the Canary Islands have been the key subjects of numerous evolutionary studies concerning a large variety of organisms. The genus Cheirolophus (Asteraceae) represents one of the largest plant radiations in the Canarian archipelago. In contrast, only a few species occur in the Mediterranean region, the putative ancestral area of the genus. Here, our main aim was to reconstruct the phylogenetic and biogeographic history of Cheirolophus with special focus on explaining the origin of the large Canarian radiation. Results: We found significant incongruence in phylogenetic relationships between nuclear and plastid markers. Each dataset provided resolution at different levels in Cheirolophus: the nuclear markers resolved the backbone of the phylogeny while the plastid data provided better resolution within the Canarian clade. The origin of Cheirolophus was dated in the Mid-Late Miocene, followed by rapid diversification into the three main Mediterranean lineages and the Macaronesian clade. A decrease in diversification rates was inferred at the end of the Miocene, with a new increase in the Late Pliocene concurrent with the onset of the Mediterranean climate. Diversification within the Macaronesian clade started in the Early-Mid Pleistocene, with unusually high speciation rates giving rise to the extant insular diversity. Conclusions: Climate-driven diversification likely explains the early evolutionary history of Cheirolophus in the Mediterranean region. It appears that the exceptionally high diversification rate in the Canarian clade was mainly driven by allopatric speciation (including intra-and interisland diversification). Several intrinsic (e.g. breeding system, polyploid origin, seed dispersal syndrome) and extrinsic (e.g. fragmented landscape, isolated habitats, climatic and geological changes) factors probably contributed to the progressive differentiation of populations resulting in numerous microendemisms. Finally, hybridization events and emerging ecological adaptation may have also reinforced the diversification process.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/59198
url https://hdl.handle.net/2445/59198
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1186/1471-2148-14-118
BMC Evolutionary Biology, 2014, vol. 14, num. 118
http://dx.doi.org/10.1186/1471-2148-14-118
dc.rights.none.fl_str_mv cc-by (c) Vitales Serrano, Daniel et al., 2014
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Vitales Serrano, Daniel et al., 2014
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv BioMed Central
publisher.none.fl_str_mv BioMed Central
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.228081

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