Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies†
The possible existence of endemism among microorganisms resulting from and preserved by geographic isolation is one of the most controversial topics in microbial ecology. We isolated 31 strains of “Spumella-like” flagellates from remote sampling sites from all continents, including Antarctica. These...
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ftpubmed:oai:pubmedcentral.nih.gov:1538753 2023-05-15T13:46:10+02:00 Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† Boenigk, Jens Pfandl, Karin Garstecki, Tobias Harms, Hauke Novarino, Gianfranco Chatzinotas, Antonis 2006-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538753 http://www.ncbi.nlm.nih.gov/pubmed/16885260 https://doi.org/10.1128/AEM.00601-06 en eng American Society for Microbiology http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538753 http://www.ncbi.nlm.nih.gov/pubmed/16885260 http://dx.doi.org/10.1128/AEM.00601-06 Copyright © 2006, American Society for Microbiology Microbial Ecology Text 2006 ftpubmed https://doi.org/10.1128/AEM.00601-06 2013-08-31T05:17:01Z The possible existence of endemism among microorganisms resulting from and preserved by geographic isolation is one of the most controversial topics in microbial ecology. We isolated 31 strains of “Spumella-like” flagellates from remote sampling sites from all continents, including Antarctica. These and another 23 isolates from a former study were characterized morphologically and by small-subunit rRNA gene sequence analysis and tested for the maximum temperature tolerance. Only a minority of the Spumella morpho- and phylotypes from the geographically isolated Antarctic continent follow the worldwide trend of a linear correlation between ambient (air) temperature during strain isolation and heat tolerance of the isolates. A high percentage of the Antarctic isolates, but none of the isolates from locations on all other continents, were obligate psychrophilic, although some of the latter were isolated at low ambient temperatures. The drastic deviation of Antarctic representatives of Spumella from the global trend of temperature adaptation of this morphospecies provides strong evidence for geographic transport restriction of a microorganism; i.e., Antarctic protistan communities are less influenced by transport of protists to and from the Antarctic continent than by local adaptation, a subtle form of endemism. Text Antarc* Antarctic Antarctica PubMed Central (PMC) Antarctic The Antarctic Applied and Environmental Microbiology 72 8 5159 5164 |
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Microbial Ecology |
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Microbial Ecology Boenigk, Jens Pfandl, Karin Garstecki, Tobias Harms, Hauke Novarino, Gianfranco Chatzinotas, Antonis Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† |
topic_facet |
Microbial Ecology |
description |
The possible existence of endemism among microorganisms resulting from and preserved by geographic isolation is one of the most controversial topics in microbial ecology. We isolated 31 strains of “Spumella-like” flagellates from remote sampling sites from all continents, including Antarctica. These and another 23 isolates from a former study were characterized morphologically and by small-subunit rRNA gene sequence analysis and tested for the maximum temperature tolerance. Only a minority of the Spumella morpho- and phylotypes from the geographically isolated Antarctic continent follow the worldwide trend of a linear correlation between ambient (air) temperature during strain isolation and heat tolerance of the isolates. A high percentage of the Antarctic isolates, but none of the isolates from locations on all other continents, were obligate psychrophilic, although some of the latter were isolated at low ambient temperatures. The drastic deviation of Antarctic representatives of Spumella from the global trend of temperature adaptation of this morphospecies provides strong evidence for geographic transport restriction of a microorganism; i.e., Antarctic protistan communities are less influenced by transport of protists to and from the Antarctic continent than by local adaptation, a subtle form of endemism. |
format |
Text |
author |
Boenigk, Jens Pfandl, Karin Garstecki, Tobias Harms, Hauke Novarino, Gianfranco Chatzinotas, Antonis |
author_facet |
Boenigk, Jens Pfandl, Karin Garstecki, Tobias Harms, Hauke Novarino, Gianfranco Chatzinotas, Antonis |
author_sort |
Boenigk, Jens |
title |
Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† |
title_short |
Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† |
title_full |
Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† |
title_fullStr |
Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† |
title_full_unstemmed |
Evidence for Geographic Isolation and Signs of Endemism within a Protistan Morphospecies† |
title_sort |
evidence for geographic isolation and signs of endemism within a protistan morphospecies† |
publisher |
American Society for Microbiology |
publishDate |
2006 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538753 http://www.ncbi.nlm.nih.gov/pubmed/16885260 https://doi.org/10.1128/AEM.00601-06 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
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Antarc* Antarctic Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538753 http://www.ncbi.nlm.nih.gov/pubmed/16885260 http://dx.doi.org/10.1128/AEM.00601-06 |
op_rights |
Copyright © 2006, American Society for Microbiology |
op_doi |
https://doi.org/10.1128/AEM.00601-06 |
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Applied and Environmental Microbiology |
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72 |
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8 |
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5159 |
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5164 |
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1766238030629175296 |