Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats
Animals are known to regulate the composition of their cell membranes to maintain key biophysical properties in response to changes in temperature. For deep-sea marine organisms, high hydrostatic pressure represents an additional, yet much more poorly understood, perturbant of cell membrane structur...
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ftpubmed:oai:pubmedcentral.nih.gov:8627573 2023-05-15T15:11:12+02:00 Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats Winnikoff, Jacob R. Haddock, Steven H. D. Budin, Itay 2021-11-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8627573/ http://www.ncbi.nlm.nih.gov/pubmed/34676421 https://doi.org/10.1242/jeb.242800 en eng The Company of Biologists Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8627573/ http://www.ncbi.nlm.nih.gov/pubmed/34676421 http://dx.doi.org/10.1242/jeb.242800 © 2021. Published by The Company of Biologists Ltd https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. CC-BY J Exp Biol Research Article Text 2021 ftpubmed https://doi.org/10.1242/jeb.242800 2021-12-05T01:53:44Z Animals are known to regulate the composition of their cell membranes to maintain key biophysical properties in response to changes in temperature. For deep-sea marine organisms, high hydrostatic pressure represents an additional, yet much more poorly understood, perturbant of cell membrane structure. Previous studies in fish and marine microbes have reported correlations with temperature and depth of membrane-fluidizing lipid components, such as polyunsaturated fatty acids. Because little has been done to isolate the separate effects of temperature and pressure on the lipid pool, it is still not understood whether these two environmental factors elicit independent or overlapping biochemical adaptive responses. Here, we use the taxonomic and habitat diversity of the phylum Ctenophora to test whether distinct low-temperature and high-pressure signatures can be detected in fatty acid profiles. We measured the fatty acid composition of 105 individual ctenophores, representing 21 species, from deep and shallow Arctic, temperate, and tropical sampling locales (sea surface temperature, −2° to 28°C). In tropical and temperate regions, remotely operated submersibles (ROVs) enabled sampling down to 4000 m. We found that among specimens with body temperatures 7.5°C or colder, depth predicted fatty acid unsaturation levels. In contrast, in the upper 200 m of the water column, temperature predicted fatty acid chain lengths. Taken together, our findings suggest that lipid metabolism may be specialized with respect to multiple physical variables in diverse marine environments. Largely distinct modes of adaptation to depth and cold imply that polar marine invertebrates may not find a ready refugium from climate change in the deep. Text Arctic Climate change PubMed Central (PMC) Arctic Journal of Experimental Biology 224 21 |
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Research Article Winnikoff, Jacob R. Haddock, Steven H. D. Budin, Itay Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
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Research Article |
description |
Animals are known to regulate the composition of their cell membranes to maintain key biophysical properties in response to changes in temperature. For deep-sea marine organisms, high hydrostatic pressure represents an additional, yet much more poorly understood, perturbant of cell membrane structure. Previous studies in fish and marine microbes have reported correlations with temperature and depth of membrane-fluidizing lipid components, such as polyunsaturated fatty acids. Because little has been done to isolate the separate effects of temperature and pressure on the lipid pool, it is still not understood whether these two environmental factors elicit independent or overlapping biochemical adaptive responses. Here, we use the taxonomic and habitat diversity of the phylum Ctenophora to test whether distinct low-temperature and high-pressure signatures can be detected in fatty acid profiles. We measured the fatty acid composition of 105 individual ctenophores, representing 21 species, from deep and shallow Arctic, temperate, and tropical sampling locales (sea surface temperature, −2° to 28°C). In tropical and temperate regions, remotely operated submersibles (ROVs) enabled sampling down to 4000 m. We found that among specimens with body temperatures 7.5°C or colder, depth predicted fatty acid unsaturation levels. In contrast, in the upper 200 m of the water column, temperature predicted fatty acid chain lengths. Taken together, our findings suggest that lipid metabolism may be specialized with respect to multiple physical variables in diverse marine environments. Largely distinct modes of adaptation to depth and cold imply that polar marine invertebrates may not find a ready refugium from climate change in the deep. |
format |
Text |
author |
Winnikoff, Jacob R. Haddock, Steven H. D. Budin, Itay |
author_facet |
Winnikoff, Jacob R. Haddock, Steven H. D. Budin, Itay |
author_sort |
Winnikoff, Jacob R. |
title |
Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
title_short |
Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
title_full |
Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
title_fullStr |
Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
title_full_unstemmed |
Depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
title_sort |
depth- and temperature-specific fatty acid adaptations in ctenophores from extreme habitats |
publisher |
The Company of Biologists Ltd |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8627573/ http://www.ncbi.nlm.nih.gov/pubmed/34676421 https://doi.org/10.1242/jeb.242800 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
J Exp Biol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8627573/ http://www.ncbi.nlm.nih.gov/pubmed/34676421 http://dx.doi.org/10.1242/jeb.242800 |
op_rights |
© 2021. Published by The Company of Biologists Ltd https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. |
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CC-BY |
op_doi |
https://doi.org/10.1242/jeb.242800 |
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Journal of Experimental Biology |
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224 |
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21 |
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1766342092735381504 |