Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)

Lagenophora (Astereae, Asteraceae) has 14 species in New Zealand, Australia, Asia, southern South America, Gough Island and Tristan da Cunha. Phylogenetic relationships in Lagenophora were inferred using nuclear and plastid DNA regions. Reconstruction of spatio-temporal evolution was estimated using...

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Autores principales: Sancho, Gisela, De Lange, P. J., Donato, Mariano Humberto, Barkla, J., Wagstaff, S. J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Naturales
Antarctica
Austral distributions
Divergence times
Molecular dating
Molecular phylogeny
New Zealand
South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86936
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86936
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Antarctica
Austral distributions
Divergence times
Molecular dating
Molecular phylogeny
New Zealand
South America
spellingShingle Ciencias Naturales
Antarctica
Austral distributions
Divergence times
Molecular dating
Molecular phylogeny
New Zealand
South America
Sancho, Gisela
De Lange, P. J.
Donato, Mariano Humberto
Barkla, J.
Wagstaff, S. J.
Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)
topic_facet Ciencias Naturales
Antarctica
Austral distributions
Divergence times
Molecular dating
Molecular phylogeny
New Zealand
South America
description Lagenophora (Astereae, Asteraceae) has 14 species in New Zealand, Australia, Asia, southern South America, Gough Island and Tristan da Cunha. Phylogenetic relationships in Lagenophora were inferred using nuclear and plastid DNA regions. Reconstruction of spatio-temporal evolution was estimated using parsimony, Bayesian inference and likelihood methods, a Bayesian relaxed molecular clock and ancestral area and habitat reconstructions. Our results support a narrow taxonomic concept of Lagenophora including only a core group of species with one clade diversifying in New Zealand and another in South America. The split between the New Zealand and South American Lagenophora dates from 11.2Mya [6.1-17.4 95% highest posterior density (HPD)]. The inferred ancestral habitats were openings in beech forest and subalpine tussockland. The biogeographical analyses infer a complex ancestral area for Lagenophora involving New Zealand and southern South America. Thus, the estimated divergence times and biogeographical reconstructions provide circumstantial evidence that Antarctica may have served as a corridor for migration until the expansion of the continental ice during the late Cenozoic. The extant distribution of Lagenophora reflects a complex history that could also have involved direct long-distance dispersal across southern oceans.
format Articulo
Articulo
author Sancho, Gisela
De Lange, P. J.
Donato, Mariano Humberto
Barkla, J.
Wagstaff, S. J.
author_facet Sancho, Gisela
De Lange, P. J.
Donato, Mariano Humberto
Barkla, J.
Wagstaff, S. J.
author_sort Sancho, Gisela
title Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)
title_short Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)
title_full Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)
title_fullStr Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)
title_full_unstemmed Late Cenozoic diversification of the austral genus <i>Lagenophora</i> (Astereae, Asteraceae)
title_sort late cenozoic diversification of the austral genus <i>lagenophora</i> (astereae, asteraceae)
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/86936
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AT donatomarianohumberto latecenozoicdiversificationoftheaustralgenusilagenophoraiastereaeasteraceae
AT barklaj latecenozoicdiversificationoftheaustralgenusilagenophoraiastereaeasteraceae
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bdutipo_str Repositorios
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