Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations
Abstract Microorganisms in the terrestrial deep biosphere host up to 20% of the earth’s biomass and are suggested to be sustained by the gases hydrogen and carbon dioxide. A metagenome analysis of three deep subsurface water types of contrasting age (from <20 to several thousand years) and de...
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Oxford University Press (OUP)
2015
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Online Access: | http://dx.doi.org/10.1038/ismej.2015.185 http://www.nature.com/articles/ismej2015185.pdf http://www.nature.com/articles/ismej2015185 https://academic.oup.com/ismej/article-pdf/10/5/1192/56171212/41396_2016_article_bfismej2015185.pdf |
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croxfordunivpr:10.1038/ismej.2015.185 2024-06-23T07:52:44+00:00 Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations Wu, Xiaofen Holmfeldt, Karin Hubalek, Valerie Lundin, Daniel Åström, Mats Bertilsson, Stefan Dopson, Mark 2015 http://dx.doi.org/10.1038/ismej.2015.185 http://www.nature.com/articles/ismej2015185.pdf http://www.nature.com/articles/ismej2015185 https://academic.oup.com/ismej/article-pdf/10/5/1192/56171212/41396_2016_article_bfismej2015185.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by-nc-nd/4.0/ https://creativecommons.org/licenses/by-nc-nd/4.0 The ISME Journal volume 10, issue 5, page 1192-1203 ISSN 1751-7362 1751-7370 journal-article 2015 croxfordunivpr https://doi.org/10.1038/ismej.2015.185 2024-06-11T04:20:53Z Abstract Microorganisms in the terrestrial deep biosphere host up to 20% of the earth’s biomass and are suggested to be sustained by the gases hydrogen and carbon dioxide. A metagenome analysis of three deep subsurface water types of contrasting age (from <20 to several thousand years) and depth (171 to 448 m) revealed phylogenetically distinct microbial community subsets that either passed or were retained by a 0.22 μm filter. Such cells of <0.22 μm would have been overlooked in previous studies relying on membrane capture. Metagenomes from the three water types were used for reconstruction of 69 distinct microbial genomes, each with >86% coverage. The populations were dominated by Proteobacteria, Candidate divisions, unclassified archaea and unclassified bacteria. The estimated genome sizes of the <0.22 μm populations were generally smaller than their phylogenetically closest relatives, suggesting that small dimensions along with a reduced genome size may be adaptations to oligotrophy. Shallow ‘modern marine’ water showed community members with a predominantly heterotrophic lifestyle. In contrast, the deeper, ‘old saline’ water adhered more closely to the current paradigm of a hydrogen-driven deep biosphere. The data were finally used to create a combined metabolic model of the deep terrestrial biosphere microbial community. Article in Journal/Newspaper Fennoscandian Oxford University Press The ISME Journal 10 5 1192 1203 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Microorganisms in the terrestrial deep biosphere host up to 20% of the earth’s biomass and are suggested to be sustained by the gases hydrogen and carbon dioxide. A metagenome analysis of three deep subsurface water types of contrasting age (from <20 to several thousand years) and depth (171 to 448 m) revealed phylogenetically distinct microbial community subsets that either passed or were retained by a 0.22 μm filter. Such cells of <0.22 μm would have been overlooked in previous studies relying on membrane capture. Metagenomes from the three water types were used for reconstruction of 69 distinct microbial genomes, each with >86% coverage. The populations were dominated by Proteobacteria, Candidate divisions, unclassified archaea and unclassified bacteria. The estimated genome sizes of the <0.22 μm populations were generally smaller than their phylogenetically closest relatives, suggesting that small dimensions along with a reduced genome size may be adaptations to oligotrophy. Shallow ‘modern marine’ water showed community members with a predominantly heterotrophic lifestyle. In contrast, the deeper, ‘old saline’ water adhered more closely to the current paradigm of a hydrogen-driven deep biosphere. The data were finally used to create a combined metabolic model of the deep terrestrial biosphere microbial community. |
format |
Article in Journal/Newspaper |
author |
Wu, Xiaofen Holmfeldt, Karin Hubalek, Valerie Lundin, Daniel Åström, Mats Bertilsson, Stefan Dopson, Mark |
spellingShingle |
Wu, Xiaofen Holmfeldt, Karin Hubalek, Valerie Lundin, Daniel Åström, Mats Bertilsson, Stefan Dopson, Mark Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
author_facet |
Wu, Xiaofen Holmfeldt, Karin Hubalek, Valerie Lundin, Daniel Åström, Mats Bertilsson, Stefan Dopson, Mark |
author_sort |
Wu, Xiaofen |
title |
Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
title_short |
Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
title_full |
Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
title_fullStr |
Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
title_full_unstemmed |
Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
title_sort |
microbial metagenomes from three aquifers in the fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations |
publisher |
Oxford University Press (OUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1038/ismej.2015.185 http://www.nature.com/articles/ismej2015185.pdf http://www.nature.com/articles/ismej2015185 https://academic.oup.com/ismej/article-pdf/10/5/1192/56171212/41396_2016_article_bfismej2015185.pdf |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
The ISME Journal volume 10, issue 5, page 1192-1203 ISSN 1751-7362 1751-7370 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ https://creativecommons.org/licenses/by-nc-nd/4.0 |
op_doi |
https://doi.org/10.1038/ismej.2015.185 |
container_title |
The ISME Journal |
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10 |
container_issue |
5 |
container_start_page |
1192 |
op_container_end_page |
1203 |
_version_ |
1802644118023700480 |