Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica
© 2020 Dillon et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Ecological theories posit that heterogenei...
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ftlouisianastuir:oai:repository.lsu.edu:geo_pubs-1579 2024-09-15T17:45:17+00:00 Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica Dillon, Megan L. Hawes, Ian Jungblut, Anne D. MacKey, Tyler J. Eisen, Jonathan A. Doran, Peter T. Sumner, Dawn Y. 2020-04-01T07:00:00Z application/pdf https://repository.lsu.edu/geo_pubs/580 https://doi.org/10.1371/journal.pone.0231053 https://repository.lsu.edu/context/geo_pubs/article/1579/viewcontent/580.pdf unknown LSU Scholarly Repository https://repository.lsu.edu/geo_pubs/580 doi:10.1371/journal.pone.0231053 https://repository.lsu.edu/context/geo_pubs/article/1579/viewcontent/580.pdf Faculty Publications text 2020 ftlouisianastuir https://doi.org/10.1371/journal.pone.0231053 2024-08-08T04:27:15Z © 2020 Dillon et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Ecological theories posit that heterogeneity in environmental conditions greatly affects community structure and function. However, the degree to which ecological theory developed using plant- and animal-dominated systems applies to microbiomes is unclear. Investigating the metabolic strategies found in microbiomes are particularly informative for testing the universality of ecological theories because microorganisms have far wider metabolic capacity than plants and animals. We used metagenomic analyses to explore the relationships between the energy and physicochemical gradients in Lake Fryxell and the metabolic capacity of its benthic microbiome. Statistical analysis of the relative abundance of metabolic marker genes and gene family diversity shows that oxygenic photosynthesis, carbon fixation, and flavin-based electron bifurcation differentiate mats growing in different environmental conditions. The pattern of gene family diversity points to the likely importance of temporal environmental heterogeneity in addition to resource gradients. Overall, we found that the environmental heterogeneity of photosynthetically active radiation (PAR) and oxygen concentration ([O2]) in Lake Fryxell provide the framework by which metabolic diversity and composition of the community is structured, in accordance with its phylogenetic structure. The organization of the resulting microbial ecosystems are consistent with the maximum power principle and the species sorting model. Text Antarc* Antarctica LSU Digital Commons (Louisiana State University) Atmospheric Chemistry and Physics 24 10 6433 6454 |
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© 2020 Dillon et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Ecological theories posit that heterogeneity in environmental conditions greatly affects community structure and function. However, the degree to which ecological theory developed using plant- and animal-dominated systems applies to microbiomes is unclear. Investigating the metabolic strategies found in microbiomes are particularly informative for testing the universality of ecological theories because microorganisms have far wider metabolic capacity than plants and animals. We used metagenomic analyses to explore the relationships between the energy and physicochemical gradients in Lake Fryxell and the metabolic capacity of its benthic microbiome. Statistical analysis of the relative abundance of metabolic marker genes and gene family diversity shows that oxygenic photosynthesis, carbon fixation, and flavin-based electron bifurcation differentiate mats growing in different environmental conditions. The pattern of gene family diversity points to the likely importance of temporal environmental heterogeneity in addition to resource gradients. Overall, we found that the environmental heterogeneity of photosynthetically active radiation (PAR) and oxygen concentration ([O2]) in Lake Fryxell provide the framework by which metabolic diversity and composition of the community is structured, in accordance with its phylogenetic structure. The organization of the resulting microbial ecosystems are consistent with the maximum power principle and the species sorting model. |
format |
Text |
author |
Dillon, Megan L. Hawes, Ian Jungblut, Anne D. MacKey, Tyler J. Eisen, Jonathan A. Doran, Peter T. Sumner, Dawn Y. |
spellingShingle |
Dillon, Megan L. Hawes, Ian Jungblut, Anne D. MacKey, Tyler J. Eisen, Jonathan A. Doran, Peter T. Sumner, Dawn Y. Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica |
author_facet |
Dillon, Megan L. Hawes, Ian Jungblut, Anne D. MacKey, Tyler J. Eisen, Jonathan A. Doran, Peter T. Sumner, Dawn Y. |
author_sort |
Dillon, Megan L. |
title |
Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica |
title_short |
Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica |
title_full |
Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica |
title_fullStr |
Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica |
title_full_unstemmed |
Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica |
title_sort |
environmental control on the distribution of metabolic strategies of benthic microbial mats in lake fryxell, antarctica |
publisher |
LSU Scholarly Repository |
publishDate |
2020 |
url |
https://repository.lsu.edu/geo_pubs/580 https://doi.org/10.1371/journal.pone.0231053 https://repository.lsu.edu/context/geo_pubs/article/1579/viewcontent/580.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Faculty Publications |
op_relation |
https://repository.lsu.edu/geo_pubs/580 doi:10.1371/journal.pone.0231053 https://repository.lsu.edu/context/geo_pubs/article/1579/viewcontent/580.pdf |
op_doi |
https://doi.org/10.1371/journal.pone.0231053 |
container_title |
Atmospheric Chemistry and Physics |
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24 |
container_issue |
10 |
container_start_page |
6433 |
op_container_end_page |
6454 |
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1810493044141588480 |