Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra
We have investigated the lipid chemistry during cold acclimation in the freeze tolerant earthworm Dendrobaena octaedra. The dominant phospholipid fatty acids (PLFA) of D. octaedra were 20:4, 20:5 and 20:1 (50% of total PLFA) followed by 18:0, 18:1 and 18:2 omega 6,9 (25% of total PLFA). The ability...
Published in: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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ftulundlup:oai:lup.lub.lu.se:418128ab-422c-43c8-8a65-04ccacbe1da2 2023-05-15T16:27:58+02:00 Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra Holmstrup, Martin Sorensen, Louise Bindesbol, Anne-Mette Hedlund, Katarina 2007 https://lup.lub.lu.se/record/647516 https://doi.org/10.1016/j.cbpa.2007.02.019 eng eng Elsevier https://lup.lub.lu.se/record/647516 http://dx.doi.org/10.1016/j.cbpa.2007.02.019 wos:000247717000012 scopus:34249798163 Comparative Biochemistry and Physiology A; 147(4), pp 911-919 (2007) ISSN: 1531-4332 Ecology membrane phospholipids earthworms cold acclimation freeze tolerance adaptation homeoviscous contributiontojournal/article info:eu-repo/semantics/article text 2007 ftulundlup https://doi.org/10.1016/j.cbpa.2007.02.019 2023-02-01T23:28:26Z We have investigated the lipid chemistry during cold acclimation in the freeze tolerant earthworm Dendrobaena octaedra. The dominant phospholipid fatty acids (PLFA) of D. octaedra were 20:4, 20:5 and 20:1 (50% of total PLFA) followed by 18:0, 18:1 and 18:2 omega 6,9 (25% of total PLFA). The ability to tolerate freezing in this species was acquired after acclimation at low temperature for 2-4 weeks. During this period one particular membrane PLFA, 18:2 omega 6,9, increased significantly and there was a good correlation between the proportion of this PLFA and the survival of freezing. The composition of neutral lipid fatty acids (NLFA), most likely representing storage lipids (triacylglycerides), also changed during cold acclimation so that the overall degree of unsaturation increased. Using a common-garden experiment approach, we compared lipid composition of three genetically different populations (Denmark, Finland and Greenland) that differed in their freeze tolerance. Inter-populational differences and differences due to cold acclimation in overall fatty acid composition were evident in both PLFAs and NLFAs. Specifically, the PLFAs, 20:4 and 20:5, were considerably more represented in worms from Greenland, and this contributed to a higher U1 of PLFAs in this population. (c) 2007 Elsevier Inc. All rights reserved. Article in Journal/Newspaper Greenland Lund University Publications (LUP) Greenland Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 147 4 911 919 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology membrane phospholipids earthworms cold acclimation freeze tolerance adaptation homeoviscous |
spellingShingle |
Ecology membrane phospholipids earthworms cold acclimation freeze tolerance adaptation homeoviscous Holmstrup, Martin Sorensen, Louise Bindesbol, Anne-Mette Hedlund, Katarina Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra |
topic_facet |
Ecology membrane phospholipids earthworms cold acclimation freeze tolerance adaptation homeoviscous |
description |
We have investigated the lipid chemistry during cold acclimation in the freeze tolerant earthworm Dendrobaena octaedra. The dominant phospholipid fatty acids (PLFA) of D. octaedra were 20:4, 20:5 and 20:1 (50% of total PLFA) followed by 18:0, 18:1 and 18:2 omega 6,9 (25% of total PLFA). The ability to tolerate freezing in this species was acquired after acclimation at low temperature for 2-4 weeks. During this period one particular membrane PLFA, 18:2 omega 6,9, increased significantly and there was a good correlation between the proportion of this PLFA and the survival of freezing. The composition of neutral lipid fatty acids (NLFA), most likely representing storage lipids (triacylglycerides), also changed during cold acclimation so that the overall degree of unsaturation increased. Using a common-garden experiment approach, we compared lipid composition of three genetically different populations (Denmark, Finland and Greenland) that differed in their freeze tolerance. Inter-populational differences and differences due to cold acclimation in overall fatty acid composition were evident in both PLFAs and NLFAs. Specifically, the PLFAs, 20:4 and 20:5, were considerably more represented in worms from Greenland, and this contributed to a higher U1 of PLFAs in this population. (c) 2007 Elsevier Inc. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Holmstrup, Martin Sorensen, Louise Bindesbol, Anne-Mette Hedlund, Katarina |
author_facet |
Holmstrup, Martin Sorensen, Louise Bindesbol, Anne-Mette Hedlund, Katarina |
author_sort |
Holmstrup, Martin |
title |
Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra |
title_short |
Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra |
title_full |
Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra |
title_fullStr |
Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra |
title_full_unstemmed |
Cold acclimation and lipid composition in the earthworm Dendrobaena octaedra |
title_sort |
cold acclimation and lipid composition in the earthworm dendrobaena octaedra |
publisher |
Elsevier |
publishDate |
2007 |
url |
https://lup.lub.lu.se/record/647516 https://doi.org/10.1016/j.cbpa.2007.02.019 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Comparative Biochemistry and Physiology A; 147(4), pp 911-919 (2007) ISSN: 1531-4332 |
op_relation |
https://lup.lub.lu.se/record/647516 http://dx.doi.org/10.1016/j.cbpa.2007.02.019 wos:000247717000012 scopus:34249798163 |
op_doi |
https://doi.org/10.1016/j.cbpa.2007.02.019 |
container_title |
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
container_volume |
147 |
container_issue |
4 |
container_start_page |
911 |
op_container_end_page |
919 |
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1766017569453506560 |