Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia
Recent data revealed that metazoans such as mites and springtails have persisted in Antarctica throughout several glacial–interglacial cycles, which contradicts the existing paradigm that terrestrial life was wiped out by successive glacial events and that the current inhabitants are recent colonize...
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ftpubmed:oai:pubmedcentral.nih.gov:2817313 2023-05-15T13:44:05+02:00 Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia De Wever, Aaike Leliaert, Frederik Verleyen, Elie Vanormelingen, Pieter Van der Gucht, Katleen Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim 2009-10-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2817313 http://www.ncbi.nlm.nih.gov/pubmed/19625320 https://doi.org/10.1098/rspb.2009.0994 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2817313 http://www.ncbi.nlm.nih.gov/pubmed/19625320 http://dx.doi.org/10.1098/rspb.2009.0994 © 2009 The Royal Society Research articles Text 2009 ftpubmed https://doi.org/10.1098/rspb.2009.0994 2013-09-02T21:13:43Z Recent data revealed that metazoans such as mites and springtails have persisted in Antarctica throughout several glacial–interglacial cycles, which contradicts the existing paradigm that terrestrial life was wiped out by successive glacial events and that the current inhabitants are recent colonizers. We used molecular phylogenetic techniques to study Antarctic microchlorophyte strains isolated from lacustrine habitats from maritime and continental Antarctica. The 14 distinct chlorophycean and trebouxiophycean lineages observed point to a wide phylogenetic diversity of apparently endemic Antarctic lineages at different taxonomic levels. This supports the hypothesis that long-term survival took place in glacial refugia, resulting in a specific Antarctic flora. The majority of the lineages have estimated ages between 17 and 84 Ma and probably diverged from their closest relatives around the time of the opening of Drake Passage (30–45 Ma), while some lineages with longer branch lengths have estimated ages that precede the break-up of Gondwana. The variation in branch length and estimated age points to several independent but rare colonization events. Text Antarc* Antarctic Antarctica Drake Passage PubMed Central (PMC) Antarctic Drake Passage Proceedings of the Royal Society B: Biological Sciences 276 1673 3591 3599 |
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Research articles De Wever, Aaike Leliaert, Frederik Verleyen, Elie Vanormelingen, Pieter Van der Gucht, Katleen Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia |
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Research articles |
description |
Recent data revealed that metazoans such as mites and springtails have persisted in Antarctica throughout several glacial–interglacial cycles, which contradicts the existing paradigm that terrestrial life was wiped out by successive glacial events and that the current inhabitants are recent colonizers. We used molecular phylogenetic techniques to study Antarctic microchlorophyte strains isolated from lacustrine habitats from maritime and continental Antarctica. The 14 distinct chlorophycean and trebouxiophycean lineages observed point to a wide phylogenetic diversity of apparently endemic Antarctic lineages at different taxonomic levels. This supports the hypothesis that long-term survival took place in glacial refugia, resulting in a specific Antarctic flora. The majority of the lineages have estimated ages between 17 and 84 Ma and probably diverged from their closest relatives around the time of the opening of Drake Passage (30–45 Ma), while some lineages with longer branch lengths have estimated ages that precede the break-up of Gondwana. The variation in branch length and estimated age points to several independent but rare colonization events. |
format |
Text |
author |
De Wever, Aaike Leliaert, Frederik Verleyen, Elie Vanormelingen, Pieter Van der Gucht, Katleen Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim |
author_facet |
De Wever, Aaike Leliaert, Frederik Verleyen, Elie Vanormelingen, Pieter Van der Gucht, Katleen Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim |
author_sort |
De Wever, Aaike |
title |
Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia |
title_short |
Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia |
title_full |
Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia |
title_fullStr |
Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia |
title_full_unstemmed |
Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia |
title_sort |
hidden levels of phylodiversity in antarctic green algae: further evidence for the existence of glacial refugia |
publisher |
The Royal Society |
publishDate |
2009 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2817313 http://www.ncbi.nlm.nih.gov/pubmed/19625320 https://doi.org/10.1098/rspb.2009.0994 |
geographic |
Antarctic Drake Passage |
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Antarctic Drake Passage |
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Antarc* Antarctic Antarctica Drake Passage |
genre_facet |
Antarc* Antarctic Antarctica Drake Passage |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2817313 http://www.ncbi.nlm.nih.gov/pubmed/19625320 http://dx.doi.org/10.1098/rspb.2009.0994 |
op_rights |
© 2009 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2009.0994 |
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Proceedings of the Royal Society B: Biological Sciences |
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276 |
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1673 |
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3591 |
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3599 |
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1766197680365633536 |