Differences in community composition of bacteria in four glaciers in western China
Microbial community patterns vary in glaciers worldwide, presenting unique responses to global climatic and environmental changes. Four bacterial clone libraries were established by 16S rRNA gene amplification from four ice layers along the 42-m-long ice core MuztB drilled from the Muztag Ata Glacie...
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ftcopernicus:oai:publications.copernicus.org:bg2973 2023-05-15T16:38:47+02:00 Differences in community composition of bacteria in four glaciers in western China An, L. Z. Chen, Y. Xiang, S.-R. Shang, T.-C. Tian, L.-D. 2018-09-27 application/pdf https://doi.org/10.5194/bg-7-1937-2010 https://www.biogeosciences.net/7/1937/2010/ eng eng doi:10.5194/bg-7-1937-2010 https://www.biogeosciences.net/7/1937/2010/ eISSN: 1726-4189 Text 2018 ftcopernicus https://doi.org/10.5194/bg-7-1937-2010 2019-12-24T09:57:21Z Microbial community patterns vary in glaciers worldwide, presenting unique responses to global climatic and environmental changes. Four bacterial clone libraries were established by 16S rRNA gene amplification from four ice layers along the 42-m-long ice core MuztB drilled from the Muztag Ata Glacier. A total of 151 bacterial sequences obtained from the ice core MuztB were phylogenetically compared with the 71 previously reported sequences from three ice cores extracted from ice caps Malan, Dunde, and Puruogangri. Six phylogenetic clusters Flavisolibacter , Flexibacter ( Bacteroidetes ), Acinetobacter , Enterobacter ( Gammaproteobacteria ), Planococcus/Anoxybacillus ( Firmicutes ), and Propionibacter/Luteococcus ( Actinobacteria ) frequently occurred along the Muztag Ata Glacier profile, and their proportion varied by seasons. Sequence analysis showed that most of the sequences from the ice core clustered with those from cold environments, and the sequence clusters from the same glacier more closely grouped together than those from the geographically isolated glaciers. Moreover, bacterial communities from the same location or similarly aged ice formed a cluster, and were clearly separate from those from other geographically isolated glaciers. In summary, the findings provide preliminary evidence of zonal distribution of microbial community, and suggest biogeography of microorganisms in glacier ice. Text ice core Copernicus Publications: E-Journals Biogeosciences 7 6 1937 1952 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Microbial community patterns vary in glaciers worldwide, presenting unique responses to global climatic and environmental changes. Four bacterial clone libraries were established by 16S rRNA gene amplification from four ice layers along the 42-m-long ice core MuztB drilled from the Muztag Ata Glacier. A total of 151 bacterial sequences obtained from the ice core MuztB were phylogenetically compared with the 71 previously reported sequences from three ice cores extracted from ice caps Malan, Dunde, and Puruogangri. Six phylogenetic clusters Flavisolibacter , Flexibacter ( Bacteroidetes ), Acinetobacter , Enterobacter ( Gammaproteobacteria ), Planococcus/Anoxybacillus ( Firmicutes ), and Propionibacter/Luteococcus ( Actinobacteria ) frequently occurred along the Muztag Ata Glacier profile, and their proportion varied by seasons. Sequence analysis showed that most of the sequences from the ice core clustered with those from cold environments, and the sequence clusters from the same glacier more closely grouped together than those from the geographically isolated glaciers. Moreover, bacterial communities from the same location or similarly aged ice formed a cluster, and were clearly separate from those from other geographically isolated glaciers. In summary, the findings provide preliminary evidence of zonal distribution of microbial community, and suggest biogeography of microorganisms in glacier ice. |
format |
Text |
author |
An, L. Z. Chen, Y. Xiang, S.-R. Shang, T.-C. Tian, L.-D. |
spellingShingle |
An, L. Z. Chen, Y. Xiang, S.-R. Shang, T.-C. Tian, L.-D. Differences in community composition of bacteria in four glaciers in western China |
author_facet |
An, L. Z. Chen, Y. Xiang, S.-R. Shang, T.-C. Tian, L.-D. |
author_sort |
An, L. Z. |
title |
Differences in community composition of bacteria in four glaciers in western China |
title_short |
Differences in community composition of bacteria in four glaciers in western China |
title_full |
Differences in community composition of bacteria in four glaciers in western China |
title_fullStr |
Differences in community composition of bacteria in four glaciers in western China |
title_full_unstemmed |
Differences in community composition of bacteria in four glaciers in western China |
title_sort |
differences in community composition of bacteria in four glaciers in western china |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-7-1937-2010 https://www.biogeosciences.net/7/1937/2010/ |
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ice core |
genre_facet |
ice core |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-7-1937-2010 https://www.biogeosciences.net/7/1937/2010/ |
op_doi |
https://doi.org/10.5194/bg-7-1937-2010 |
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Biogeosciences |
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7 |
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6 |
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1937 |
op_container_end_page |
1952 |
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1766029121483177984 |