Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments
Permanently cold marine sediments are heavily influenced by increased input of iron as a result of accelerated glacial melt, weathering, and erosion. The impact of such environmental changes on microbial communities in coastal sediments is poorly understood. We investigated geochemical parameters th...
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ftpubmed:oai:pubmedcentral.nih.gov:8630232 2023-05-15T13:56:55+02:00 Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments Wunder, Lea C. Aromokeye, David A. Yin, Xiuran Richter-Heitmann, Tim Willis-Poratti, Graciana Schnakenberg, Annika Otersen, Carolin Dohrmann, Ingrid Römer, Miriam Bohrmann, Gerhard Kasten, Sabine Friedrich, Michael W. 2021-06-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8630232/ http://www.ncbi.nlm.nih.gov/pubmed/34155335 https://doi.org/10.1038/s41396-021-01014-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8630232/ http://www.ncbi.nlm.nih.gov/pubmed/34155335 http://dx.doi.org/10.1038/s41396-021-01014-9 © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY ISME J Article Text 2021 ftpubmed https://doi.org/10.1038/s41396-021-01014-9 2021-12-05T01:57:38Z Permanently cold marine sediments are heavily influenced by increased input of iron as a result of accelerated glacial melt, weathering, and erosion. The impact of such environmental changes on microbial communities in coastal sediments is poorly understood. We investigated geochemical parameters that shape microbial community compositions in anoxic surface sediments of four geochemically differing sites (Annenkov Trough, Church Trough, Cumberland Bay, Drygalski Trough) around South Georgia, Southern Ocean. Sulfate reduction prevails in Church Trough and iron reduction at the other sites, correlating with differing local microbial communities. Within the order Desulfuromonadales, the family Sva1033, not previously recognized for being capable of dissimilatory iron reduction, was detected at rather high relative abundances (up to 5%) while other members of Desulfuromonadales were less abundant (<0.6%). We propose that Sva1033 is capable of performing dissimilatory iron reduction in sediment incubations based on RNA stable isotope probing. Sulfate reducers, who maintain a high relative abundance of up to 30% of bacterial 16S rRNA genes at the iron reduction sites, were also active during iron reduction in the incubations. Thus, concurrent sulfate reduction is possibly masked by cryptic sulfur cycling, i.e., reoxidation or precipitation of produced sulfide at a small or undetectable pool size. Our results show the importance of iron and sulfate reduction, indicated by ferrous iron and sulfide, as processes that shape microbial communities and provide evidence for one of Sva1033’s metabolic capabilities in permanently cold marine sediments. Text Antarc* Antarctic Southern Ocean PubMed Central (PMC) Antarctic Cumberland Bay ENVELOPE(69.052,69.052,-48.781,-48.781) Drygalski ENVELOPE(-61.000,-61.000,-64.717,-64.717) Southern Ocean The ISME Journal 15 12 3587 3604 |
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Article Wunder, Lea C. Aromokeye, David A. Yin, Xiuran Richter-Heitmann, Tim Willis-Poratti, Graciana Schnakenberg, Annika Otersen, Carolin Dohrmann, Ingrid Römer, Miriam Bohrmann, Gerhard Kasten, Sabine Friedrich, Michael W. Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments |
topic_facet |
Article |
description |
Permanently cold marine sediments are heavily influenced by increased input of iron as a result of accelerated glacial melt, weathering, and erosion. The impact of such environmental changes on microbial communities in coastal sediments is poorly understood. We investigated geochemical parameters that shape microbial community compositions in anoxic surface sediments of four geochemically differing sites (Annenkov Trough, Church Trough, Cumberland Bay, Drygalski Trough) around South Georgia, Southern Ocean. Sulfate reduction prevails in Church Trough and iron reduction at the other sites, correlating with differing local microbial communities. Within the order Desulfuromonadales, the family Sva1033, not previously recognized for being capable of dissimilatory iron reduction, was detected at rather high relative abundances (up to 5%) while other members of Desulfuromonadales were less abundant (<0.6%). We propose that Sva1033 is capable of performing dissimilatory iron reduction in sediment incubations based on RNA stable isotope probing. Sulfate reducers, who maintain a high relative abundance of up to 30% of bacterial 16S rRNA genes at the iron reduction sites, were also active during iron reduction in the incubations. Thus, concurrent sulfate reduction is possibly masked by cryptic sulfur cycling, i.e., reoxidation or precipitation of produced sulfide at a small or undetectable pool size. Our results show the importance of iron and sulfate reduction, indicated by ferrous iron and sulfide, as processes that shape microbial communities and provide evidence for one of Sva1033’s metabolic capabilities in permanently cold marine sediments. |
format |
Text |
author |
Wunder, Lea C. Aromokeye, David A. Yin, Xiuran Richter-Heitmann, Tim Willis-Poratti, Graciana Schnakenberg, Annika Otersen, Carolin Dohrmann, Ingrid Römer, Miriam Bohrmann, Gerhard Kasten, Sabine Friedrich, Michael W. |
author_facet |
Wunder, Lea C. Aromokeye, David A. Yin, Xiuran Richter-Heitmann, Tim Willis-Poratti, Graciana Schnakenberg, Annika Otersen, Carolin Dohrmann, Ingrid Römer, Miriam Bohrmann, Gerhard Kasten, Sabine Friedrich, Michael W. |
author_sort |
Wunder, Lea C. |
title |
Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments |
title_short |
Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments |
title_full |
Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments |
title_fullStr |
Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments |
title_full_unstemmed |
Iron and sulfate reduction structure microbial communities in (sub-)Antarctic sediments |
title_sort |
iron and sulfate reduction structure microbial communities in (sub-)antarctic sediments |
publisher |
Nature Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8630232/ http://www.ncbi.nlm.nih.gov/pubmed/34155335 https://doi.org/10.1038/s41396-021-01014-9 |
long_lat |
ENVELOPE(69.052,69.052,-48.781,-48.781) ENVELOPE(-61.000,-61.000,-64.717,-64.717) |
geographic |
Antarctic Cumberland Bay Drygalski Southern Ocean |
geographic_facet |
Antarctic Cumberland Bay Drygalski Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
ISME J |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8630232/ http://www.ncbi.nlm.nih.gov/pubmed/34155335 http://dx.doi.org/10.1038/s41396-021-01014-9 |
op_rights |
© The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41396-021-01014-9 |
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The ISME Journal |
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15 |
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12 |
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3587 |
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3604 |
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