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Large Diversity in ...
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Dawson, H. M.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
(author)
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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2020-09-22
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OXFORD UNIV PRESS INC,2020
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-434726
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434726URI
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https://doi.org/10.1093/icb/icaa133DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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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.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Heal, K. R.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
(author)
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Torstensson, AndersUppsala universitet,Limnologi(Swepub:uu)andto550
(author)
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Carlson, L. T.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
(author)
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Ingalls, A. E.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
(author)
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Young, J. N.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
(author)
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Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.Limnologi
(creator_code:org_t)
Related titles
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In:Integrative and Comparative Biology: OXFORD UNIV PRESS INC60:6, s. 1401-14131540-70631557-7023
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