Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice
Sea ice microbial communities produce large amounts of the sulfur metabolite dimethylsulfoniopropionate (DMSP), a precursor of the climate cooling gas dimethylsulfide. Despite their importance to the polar sulfur cycle, drivers and metabolic pathways of sea ice DMSP are uncertain. Here we report the...
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Language: | English |
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2018
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Online Access: | https://www.vliz.be/imisdocs/publications/328365.pdf |
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ftvliz:oai:oma.vliz.be:310476 2023-05-15T13:53:33+02:00 Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice Carnat, G. Said-Ahmad, W. Fripiat, F. Wittek, B. Tison, J.-L. Uhlig, C. Amrani, A. 2018 application/pdf https://www.vliz.be/imisdocs/publications/328365.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000461126500211 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1038/s42003-018-0228-y https://www.vliz.be/imisdocs/publications/328365.pdf info:eu-repo/semantics/openAccess %3Ci%3ECommunications+Biology+1%3C%2Fi%3E%3A+9.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1038%2Fs42003-018-0228-y%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1038%2Fs42003-018-0228-y%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftvliz https://doi.org/10.1038/s42003-018-0228-y 2022-05-01T11:17:36Z Sea ice microbial communities produce large amounts of the sulfur metabolite dimethylsulfoniopropionate (DMSP), a precursor of the climate cooling gas dimethylsulfide. Despite their importance to the polar sulfur cycle, drivers and metabolic pathways of sea ice DMSP are uncertain. Here we report the first measurements of sea ice DMSP sulfur isotopic composition ( 34 S/ 32 S ratio, δ 34 S). δ 34 S values in ice cores from the Ross Sea and Weddell Sea reveal considerable variability across seasons and between ice horizons (from +10.6 to +23.6‰). We discuss how the most extreme δ 34 S values observed could be related to unique DMSP cycling in the seasonally extreme physiochemical conditions of isolated brine inclusions in winter-spring. Using cell cultures, we show that part of the DMSP δ 34 S variability could be explained by distinct DMSP metabolism in sea ice microalgae. These findings advance our understanding of the sea ice sulfur cycle and metabolic adaptations of microbes in extreme environments. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Sea ice Weddell Sea Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic Ross Sea Weddell Weddell Sea Communications Biology 1 1 |
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Open Polar |
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Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
Sea ice microbial communities produce large amounts of the sulfur metabolite dimethylsulfoniopropionate (DMSP), a precursor of the climate cooling gas dimethylsulfide. Despite their importance to the polar sulfur cycle, drivers and metabolic pathways of sea ice DMSP are uncertain. Here we report the first measurements of sea ice DMSP sulfur isotopic composition ( 34 S/ 32 S ratio, δ 34 S). δ 34 S values in ice cores from the Ross Sea and Weddell Sea reveal considerable variability across seasons and between ice horizons (from +10.6 to +23.6‰). We discuss how the most extreme δ 34 S values observed could be related to unique DMSP cycling in the seasonally extreme physiochemical conditions of isolated brine inclusions in winter-spring. Using cell cultures, we show that part of the DMSP δ 34 S variability could be explained by distinct DMSP metabolism in sea ice microalgae. These findings advance our understanding of the sea ice sulfur cycle and metabolic adaptations of microbes in extreme environments. |
format |
Article in Journal/Newspaper |
author |
Carnat, G. Said-Ahmad, W. Fripiat, F. Wittek, B. Tison, J.-L. Uhlig, C. Amrani, A. |
spellingShingle |
Carnat, G. Said-Ahmad, W. Fripiat, F. Wittek, B. Tison, J.-L. Uhlig, C. Amrani, A. Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice |
author_facet |
Carnat, G. Said-Ahmad, W. Fripiat, F. Wittek, B. Tison, J.-L. Uhlig, C. Amrani, A. |
author_sort |
Carnat, G. |
title |
Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice |
title_short |
Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice |
title_full |
Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice |
title_fullStr |
Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice |
title_full_unstemmed |
Variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in Antarctic sea ice |
title_sort |
variability in sulfur isotope composition suggests unique dimethylsulfoniopropionate cycling and microalgae metabolism in antarctic sea ice |
publishDate |
2018 |
url |
https://www.vliz.be/imisdocs/publications/328365.pdf |
geographic |
Antarctic Ross Sea Weddell Weddell Sea |
geographic_facet |
Antarctic Ross Sea Weddell Weddell Sea |
genre |
Antarc* Antarctic Ross Sea Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Ross Sea Sea ice Weddell Sea |
op_source |
%3Ci%3ECommunications+Biology+1%3C%2Fi%3E%3A+9.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1038%2Fs42003-018-0228-y%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1038%2Fs42003-018-0228-y%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000461126500211 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1038/s42003-018-0228-y https://www.vliz.be/imisdocs/publications/328365.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s42003-018-0228-y |
container_title |
Communications Biology |
container_volume |
1 |
container_issue |
1 |
_version_ |
1766258735701819392 |