Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms
Synopsis Intense bottom-ice algal blooms, often dominated by diatoms, are an important source of food for grazers, organic matter for export during sea ice melt, and dissolved organic carbon. Sea-ice diatoms have a number of adaptations, including accumulation of compatible solutes, that allows them...
Published in: | Integrative and Comparative Biology |
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Oxford University Press (OUP)
2020
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Online Access: | http://dx.doi.org/10.1093/icb/icaa133 http://academic.oup.com/icb/advance-article-pdf/doi/10.1093/icb/icaa133/34644315/icaa133.pdf http://academic.oup.com/icb/article-pdf/60/6/1401/34926828/icaa133.pdf |
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croxfordunivpr:10.1093/icb/icaa133 2024-09-09T20:06:50+00:00 Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms Dawson, H M Heal, K R Torstensson, A Carlson, L T Ingalls, A E Young, J N National Science Foundation Simons Foundation 2020 http://dx.doi.org/10.1093/icb/icaa133 http://academic.oup.com/icb/advance-article-pdf/doi/10.1093/icb/icaa133/34644315/icaa133.pdf http://academic.oup.com/icb/article-pdf/60/6/1401/34926828/icaa133.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Integrative and Comparative Biology volume 60, issue 6, page 1401-1413 ISSN 1540-7063 1557-7023 journal-article 2020 croxfordunivpr https://doi.org/10.1093/icb/icaa133 2024-08-12T04:25:52Z Synopsis Intense bottom-ice algal blooms, often dominated by diatoms, are an important source of food for grazers, organic matter for export during sea ice melt, and dissolved organic carbon. Sea-ice diatoms have a number of adaptations, including accumulation of compatible solutes, that allows them to inhabit this highly variable environment characterized by extremes in temperature, salinity, and light. In addition to protecting them from extreme conditions, these compounds present a labile, nutrient-rich source of organic matter, and include precursors to climate active compounds (e.g., dimethyl sulfide [DMS]), which are likely regulated with environmental change. Here, intracellular concentrations of 45 metabolites were quantified in three sea-ice diatom species and were compared to two temperate diatom species, with a focus on compatible solutes and free amino acid pools. There was a large diversity of metabolite concentrations between diatoms with no clear pattern identifiable for sea-ice species. Concentrations of some compatible solutes (isethionic acid, homarine) approached 1 M in the sea-ice diatoms, Fragilariopsis cylindrus and Navicula cf. perminuta, but not in the larger sea-ice diatom, Nitzschia lecointei or in the temperate diatom species. The differential use of compatible solutes in sea-ice diatoms suggests different adaptive strategies and highlights which small organic compounds may be important in polar biogeochemical cycles. Article in Journal/Newspaper Sea ice Oxford University Press Integrative and Comparative Biology 60 6 1401 1413 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Synopsis Intense bottom-ice algal blooms, often dominated by diatoms, are an important source of food for grazers, organic matter for export during sea ice melt, and dissolved organic carbon. Sea-ice diatoms have a number of adaptations, including accumulation of compatible solutes, that allows them to inhabit this highly variable environment characterized by extremes in temperature, salinity, and light. In addition to protecting them from extreme conditions, these compounds present a labile, nutrient-rich source of organic matter, and include precursors to climate active compounds (e.g., dimethyl sulfide [DMS]), which are likely regulated with environmental change. Here, intracellular concentrations of 45 metabolites were quantified in three sea-ice diatom species and were compared to two temperate diatom species, with a focus on compatible solutes and free amino acid pools. There was a large diversity of metabolite concentrations between diatoms with no clear pattern identifiable for sea-ice species. Concentrations of some compatible solutes (isethionic acid, homarine) approached 1 M in the sea-ice diatoms, Fragilariopsis cylindrus and Navicula cf. perminuta, but not in the larger sea-ice diatom, Nitzschia lecointei or in the temperate diatom species. The differential use of compatible solutes in sea-ice diatoms suggests different adaptive strategies and highlights which small organic compounds may be important in polar biogeochemical cycles. |
author2 |
National Science Foundation Simons Foundation |
format |
Article in Journal/Newspaper |
author |
Dawson, H M Heal, K R Torstensson, A Carlson, L T Ingalls, A E Young, J N |
spellingShingle |
Dawson, H M Heal, K R Torstensson, A Carlson, L T Ingalls, A E Young, J N Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms |
author_facet |
Dawson, H M Heal, K R Torstensson, A Carlson, L T Ingalls, A E Young, J N |
author_sort |
Dawson, H M |
title |
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms |
title_short |
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms |
title_full |
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms |
title_fullStr |
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms |
title_full_unstemmed |
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms |
title_sort |
large diversity in nitrogen- and sulfur-containing compatible solute profiles in polar and temperate diatoms |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/icb/icaa133 http://academic.oup.com/icb/advance-article-pdf/doi/10.1093/icb/icaa133/34644315/icaa133.pdf http://academic.oup.com/icb/article-pdf/60/6/1401/34926828/icaa133.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Integrative and Comparative Biology volume 60, issue 6, page 1401-1413 ISSN 1540-7063 1557-7023 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icb/icaa133 |
container_title |
Integrative and Comparative Biology |
container_volume |
60 |
container_issue |
6 |
container_start_page |
1401 |
op_container_end_page |
1413 |
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1809939397595889664 |