Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea
Abstract Deep Lake in Antarctica is a cold, hypersaline system where four types of haloarchaea representing distinct genera comprise >70% of the lake community: strain tADL ∼44%, strain DL31 ∼18%, Halorubrum lacusprofundi ∼10% and strain DL1 ∼0.3%. By performing comparative genomics, growth s...
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croxfordunivpr:10.1038/ismej.2014.18 2024-09-15T17:44:40+00:00 Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea Williams, Timothy J Allen, Michelle A DeMaere, Matthew Z Kyrpides, Nikos C Tringe, Susannah G Woyke, Tanja Cavicchioli, Ricardo 2014 http://dx.doi.org/10.1038/ismej.2014.18 http://www.nature.com/articles/ismej201418.pdf http://www.nature.com/articles/ismej201418 https://academic.oup.com/ismej/article-pdf/8/8/1645/56287573/41396_2014_article_bfismej201418.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm The ISME Journal volume 8, issue 8, page 1645-1658 ISSN 1751-7362 1751-7370 journal-article 2014 croxfordunivpr https://doi.org/10.1038/ismej.2014.18 2024-08-12T04:24:33Z Abstract Deep Lake in Antarctica is a cold, hypersaline system where four types of haloarchaea representing distinct genera comprise >70% of the lake community: strain tADL ∼44%, strain DL31 ∼18%, Halorubrum lacusprofundi ∼10% and strain DL1 ∼0.3%. By performing comparative genomics, growth substrate assays, and analyses of distribution by lake depth, size partitioning and lake nutrient composition, we were able to infer important metabolic traits and ecophysiological characteristics of the four Antarctic haloarchaea that contribute to their hierarchical persistence and coexistence in Deep Lake. tADL is characterized by a capacity for motility via flagella (archaella) and gas vesicles, a highly saccharolytic metabolism, a preference for glycerol, and photoheterotrophic growth. In contrast, DL31 has a metabolism specialized in processing proteins and peptides, and appears to prefer an association with particulate organic matter, while lacking the genomic potential for motility. H. lacusprofundi is the least specialized, displaying a genomic potential for the utilization of diverse organic substrates. The least abundant species, DL1, is characterized by a preference for catabolism of amino acids, and is the only one species that lacks genes needed for glycerol degradation. Despite the four haloarchaea being distributed throughout the water column, our analyses describe a range of distinctive features, including preferences for substrates that are indicative of ecological niche partitioning. The individual characteristics could be responsible for shaping the composition of the haloarchaeal community throughout the lake by enabling selection of ecotypes and maintaining sympatric speciation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Oxford University Press The ISME Journal 8 8 1645 1658 |
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Oxford University Press |
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English |
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Abstract Deep Lake in Antarctica is a cold, hypersaline system where four types of haloarchaea representing distinct genera comprise >70% of the lake community: strain tADL ∼44%, strain DL31 ∼18%, Halorubrum lacusprofundi ∼10% and strain DL1 ∼0.3%. By performing comparative genomics, growth substrate assays, and analyses of distribution by lake depth, size partitioning and lake nutrient composition, we were able to infer important metabolic traits and ecophysiological characteristics of the four Antarctic haloarchaea that contribute to their hierarchical persistence and coexistence in Deep Lake. tADL is characterized by a capacity for motility via flagella (archaella) and gas vesicles, a highly saccharolytic metabolism, a preference for glycerol, and photoheterotrophic growth. In contrast, DL31 has a metabolism specialized in processing proteins and peptides, and appears to prefer an association with particulate organic matter, while lacking the genomic potential for motility. H. lacusprofundi is the least specialized, displaying a genomic potential for the utilization of diverse organic substrates. The least abundant species, DL1, is characterized by a preference for catabolism of amino acids, and is the only one species that lacks genes needed for glycerol degradation. Despite the four haloarchaea being distributed throughout the water column, our analyses describe a range of distinctive features, including preferences for substrates that are indicative of ecological niche partitioning. The individual characteristics could be responsible for shaping the composition of the haloarchaeal community throughout the lake by enabling selection of ecotypes and maintaining sympatric speciation. |
format |
Article in Journal/Newspaper |
author |
Williams, Timothy J Allen, Michelle A DeMaere, Matthew Z Kyrpides, Nikos C Tringe, Susannah G Woyke, Tanja Cavicchioli, Ricardo |
spellingShingle |
Williams, Timothy J Allen, Michelle A DeMaere, Matthew Z Kyrpides, Nikos C Tringe, Susannah G Woyke, Tanja Cavicchioli, Ricardo Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
author_facet |
Williams, Timothy J Allen, Michelle A DeMaere, Matthew Z Kyrpides, Nikos C Tringe, Susannah G Woyke, Tanja Cavicchioli, Ricardo |
author_sort |
Williams, Timothy J |
title |
Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
title_short |
Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
title_full |
Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
title_fullStr |
Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
title_full_unstemmed |
Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
title_sort |
microbial ecology of an antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea |
publisher |
Oxford University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1038/ismej.2014.18 http://www.nature.com/articles/ismej201418.pdf http://www.nature.com/articles/ismej201418 https://academic.oup.com/ismej/article-pdf/8/8/1645/56287573/41396_2014_article_bfismej201418.pdf |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
The ISME Journal volume 8, issue 8, page 1645-1658 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm |
op_doi |
https://doi.org/10.1038/ismej.2014.18 |
container_title |
The ISME Journal |
container_volume |
8 |
container_issue |
8 |
container_start_page |
1645 |
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1658 |
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1810492325073256448 |