Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data
The Annonaceae are a pantropical angiosperm family, in which Anaxagorea is sister to the rest of the family based on previous phylogenetic studies. Anaxagorea is the only genus of Annonaceae with a disjunct distribution in South and Central America and southeast Asia. Earlier arguments on the biogeo...
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The American Society of Plant Taxonomists
2005
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ftbioone:10.1600/036364405775097888 2023-07-30T04:05:29+02:00 Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data Tanya Scharaschkin James A. Doyle Tanya Scharaschkin James A. Doyle world 2005-10-01 text/HTML https://doi.org/10.1600/036364405775097888 en eng The American Society of Plant Taxonomists doi:10.1600/036364405775097888 All rights reserved. https://doi.org/10.1600/036364405775097888 Text 2005 ftbioone https://doi.org/10.1600/036364405775097888 2023-07-09T09:37:06Z The Annonaceae are a pantropical angiosperm family, in which Anaxagorea is sister to the rest of the family based on previous phylogenetic studies. Anaxagorea is the only genus of Annonaceae with a disjunct distribution in South and Central America and southeast Asia. Earlier arguments on the biogeographic history of Annonaceae led to the hypothesis of a Laurasian origin for Anaxagorea. A detailed phylogenetic study was conducted using 75 morphological characters and molecular sequences from the atpB-rbcL, psbA-trnH, and trnL-trnF spacer regions and the trnL intron. Molecular analyses alone do not support the monophyly of the Asian species, but the morphological and combined molecular and morphological analyses do. All analyses place most Central American species in a clade, but none support an Asian-Central American clade. South American species form a basal grade, thereby refuting the hypothesis of a Laurasian origin for the genus and indicating instead a Gondwanan origin. Parsimony optimizations and DIVA reconstructions of biogeographic data indicate separate dispersals from South America to Central America and to Asia. Molecular age estimates indicate an Eocene origin for the genus. The clade containing the Asian and Central American species is dated to be younger than the Oligocene climatic deterioration, which reduces support for the North Atlantic land bridge as a dispersal route from South America to Asia. Text North Atlantic BioOne Online Journals Systematic Botany 30 4 712 735 |
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English |
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The Annonaceae are a pantropical angiosperm family, in which Anaxagorea is sister to the rest of the family based on previous phylogenetic studies. Anaxagorea is the only genus of Annonaceae with a disjunct distribution in South and Central America and southeast Asia. Earlier arguments on the biogeographic history of Annonaceae led to the hypothesis of a Laurasian origin for Anaxagorea. A detailed phylogenetic study was conducted using 75 morphological characters and molecular sequences from the atpB-rbcL, psbA-trnH, and trnL-trnF spacer regions and the trnL intron. Molecular analyses alone do not support the monophyly of the Asian species, but the morphological and combined molecular and morphological analyses do. All analyses place most Central American species in a clade, but none support an Asian-Central American clade. South American species form a basal grade, thereby refuting the hypothesis of a Laurasian origin for the genus and indicating instead a Gondwanan origin. Parsimony optimizations and DIVA reconstructions of biogeographic data indicate separate dispersals from South America to Central America and to Asia. Molecular age estimates indicate an Eocene origin for the genus. The clade containing the Asian and Central American species is dated to be younger than the Oligocene climatic deterioration, which reduces support for the North Atlantic land bridge as a dispersal route from South America to Asia. |
author2 |
Tanya Scharaschkin James A. Doyle |
format |
Text |
author |
Tanya Scharaschkin James A. Doyle |
spellingShingle |
Tanya Scharaschkin James A. Doyle Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data |
author_facet |
Tanya Scharaschkin James A. Doyle |
author_sort |
Tanya Scharaschkin |
title |
Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data |
title_short |
Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data |
title_full |
Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data |
title_fullStr |
Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data |
title_full_unstemmed |
Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data |
title_sort |
phylogeny and historical biogeography of anaxagorea (annonaceae) using morphology and non-coding chloroplast sequence data |
publisher |
The American Society of Plant Taxonomists |
publishDate |
2005 |
url |
https://doi.org/10.1600/036364405775097888 |
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world |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
https://doi.org/10.1600/036364405775097888 |
op_relation |
doi:10.1600/036364405775097888 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1600/036364405775097888 |
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Systematic Botany |
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30 |
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4 |
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712 |
op_container_end_page |
735 |
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1772817431672127488 |