Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate†
The free-living planktonic freshwater bacterium Polynucleobacter necessarius subspecies asymbioticus (> 99% 16S rRNA similarity) represents a taxon with a cosmopolitan distribution and apparently ubiquitous occurrence in lentic freshwater habitats. We tested for intra-taxon biogeographic patterns...
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ftpubmed:oai:pubmedcentral.nih.gov:4361717 2023-05-15T13:43:20+02:00 Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† Hahn, Martin W Koll, Ulrike Jezberová, Jitka Camacho, Antonio 2015-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361717/ http://www.ncbi.nlm.nih.gov/pubmed/24920455 https://doi.org/10.1111/1462-2920.12532 en eng BlackWell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361717/ http://www.ncbi.nlm.nih.gov/pubmed/24920455 http://dx.doi.org/10.1111/1462-2920.12532 © 2014 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Research Articles Text 2015 ftpubmed https://doi.org/10.1111/1462-2920.12532 2015-05-03T00:13:48Z The free-living planktonic freshwater bacterium Polynucleobacter necessarius subspecies asymbioticus (> 99% 16S rRNA similarity) represents a taxon with a cosmopolitan distribution and apparently ubiquitous occurrence in lentic freshwater habitats. We tested for intra-taxon biogeographic patterns by combining cultivation-independent and cultivation methods. A culture collection of 204 strains isolated from globally distributed freshwater habitats (Arctic to Antarctica) was investigated for phylogeographic patterns based on sequences of two markers, the 16S–23S internal transcribed spacers and the glutamine synthetase gene (glnA). Genetic distance between isolates showed significant geographic distance-decay patterns for both markers, suggesting that an isolation-by-distance mechanism influences the global phylogeography. Furthermore, a couple of subgroups showed restricted geographic distributions. Strains of one subgroup were exclusively obtained from tropical sites on four continents (pantropical subgroup). Cultivation-independent methods were used to confirm the restricted geographic distributions of two subgroups. The pantropical taxon could be detected in 63% of investigated tropical habitats but not in any of 121 European freshwater samples. Physiological tests indicated that almost all strains of the pantropical subgroup failed to grow at temperatures of 4°C, while strains affiliated with other subgroups showed good growth at this temperature. This suggests that thermal adaptation is involved in phylogeographic structuring of the global Polynucleobacter population. Text Antarc* Antarctica Arctic PubMed Central (PMC) Arctic Environmental Microbiology 17 3 829 840 |
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Research Articles Hahn, Martin W Koll, Ulrike Jezberová, Jitka Camacho, Antonio Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
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Research Articles |
description |
The free-living planktonic freshwater bacterium Polynucleobacter necessarius subspecies asymbioticus (> 99% 16S rRNA similarity) represents a taxon with a cosmopolitan distribution and apparently ubiquitous occurrence in lentic freshwater habitats. We tested for intra-taxon biogeographic patterns by combining cultivation-independent and cultivation methods. A culture collection of 204 strains isolated from globally distributed freshwater habitats (Arctic to Antarctica) was investigated for phylogeographic patterns based on sequences of two markers, the 16S–23S internal transcribed spacers and the glutamine synthetase gene (glnA). Genetic distance between isolates showed significant geographic distance-decay patterns for both markers, suggesting that an isolation-by-distance mechanism influences the global phylogeography. Furthermore, a couple of subgroups showed restricted geographic distributions. Strains of one subgroup were exclusively obtained from tropical sites on four continents (pantropical subgroup). Cultivation-independent methods were used to confirm the restricted geographic distributions of two subgroups. The pantropical taxon could be detected in 63% of investigated tropical habitats but not in any of 121 European freshwater samples. Physiological tests indicated that almost all strains of the pantropical subgroup failed to grow at temperatures of 4°C, while strains affiliated with other subgroups showed good growth at this temperature. This suggests that thermal adaptation is involved in phylogeographic structuring of the global Polynucleobacter population. |
format |
Text |
author |
Hahn, Martin W Koll, Ulrike Jezberová, Jitka Camacho, Antonio |
author_facet |
Hahn, Martin W Koll, Ulrike Jezberová, Jitka Camacho, Antonio |
author_sort |
Hahn, Martin W |
title |
Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
title_short |
Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
title_full |
Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
title_fullStr |
Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
title_full_unstemmed |
Global phylogeography of pelagic Polynucleobacter bacteria: Restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
title_sort |
global phylogeography of pelagic polynucleobacter bacteria: restricted geographic distribution of subgroups, isolation by distance and influence of climate† |
publisher |
BlackWell Publishing Ltd |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361717/ http://www.ncbi.nlm.nih.gov/pubmed/24920455 https://doi.org/10.1111/1462-2920.12532 |
geographic |
Arctic |
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Arctic |
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Antarc* Antarctica Arctic |
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Antarc* Antarctica Arctic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361717/ http://www.ncbi.nlm.nih.gov/pubmed/24920455 http://dx.doi.org/10.1111/1462-2920.12532 |
op_rights |
© 2014 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
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CC-BY |
op_doi |
https://doi.org/10.1111/1462-2920.12532 |
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Environmental Microbiology |
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17 |
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3 |
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829 |
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840 |
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1766187551557681152 |