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Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress

Temperature can modify membrane fluidity and thus affects cellular functions and physiological activities. This study examines lipid remodelling in the marine symbiotic organism, Tridacna maxima, during a time series of induced thermal stress, with an emphasis on the morphology of their symbiont Sym...

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Autores principales: Dubousquet, Vaimiti, Gros, Emmanuelle, Berteaux-Lecellier, Véronique, Viguier, Bruno, Raharivelomanana, Phila, Bertrand, Cédric, Lecellier, Gaël J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Company of Biologists Ltd 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087672/
https://www.ncbi.nlm.nih.gov/pubmed/27543058
http://dx.doi.org/10.1242/bio.017921
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author Dubousquet, Vaimiti
Gros, Emmanuelle
Berteaux-Lecellier, Véronique
Viguier, Bruno
Raharivelomanana, Phila
Bertrand, Cédric
Lecellier, Gaël J.
author_facet Dubousquet, Vaimiti
Gros, Emmanuelle
Berteaux-Lecellier, Véronique
Viguier, Bruno
Raharivelomanana, Phila
Bertrand, Cédric
Lecellier, Gaël J.
author_sort Dubousquet, Vaimiti
collection PubMed
description Temperature can modify membrane fluidity and thus affects cellular functions and physiological activities. This study examines lipid remodelling in the marine symbiotic organism, Tridacna maxima, during a time series of induced thermal stress, with an emphasis on the morphology of their symbiont Symbiodinium. First, we show that the French Polynesian giant clams harbour an important proportion of saturated fatty acids (SFA), which reflects their tropical location. Second, in contrast to most marine organisms, the total lipid content in giant clams remained constant under stress, though some changes in their composition were shown. Third, the stress-induced changes in fatty acid (FA) diversity were accompanied by an upregulation of genes involved in lipids and ROS pathways. Finally, our microscopic analysis revealed that for the giant clam's symbiont, Symbiodinium, thermal stress led to two sequential cell death processes. Our data suggests that the degradation of Symbiodinium cells could provide an additional source of energy to T. maxima in response to heat stress.
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spelling pubmed-50876722016-10-31 Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress Dubousquet, Vaimiti Gros, Emmanuelle Berteaux-Lecellier, Véronique Viguier, Bruno Raharivelomanana, Phila Bertrand, Cédric Lecellier, Gaël J. Biol Open Research Article Temperature can modify membrane fluidity and thus affects cellular functions and physiological activities. This study examines lipid remodelling in the marine symbiotic organism, Tridacna maxima, during a time series of induced thermal stress, with an emphasis on the morphology of their symbiont Symbiodinium. First, we show that the French Polynesian giant clams harbour an important proportion of saturated fatty acids (SFA), which reflects their tropical location. Second, in contrast to most marine organisms, the total lipid content in giant clams remained constant under stress, though some changes in their composition were shown. Third, the stress-induced changes in fatty acid (FA) diversity were accompanied by an upregulation of genes involved in lipids and ROS pathways. Finally, our microscopic analysis revealed that for the giant clam's symbiont, Symbiodinium, thermal stress led to two sequential cell death processes. Our data suggests that the degradation of Symbiodinium cells could provide an additional source of energy to T. maxima in response to heat stress. The Company of Biologists Ltd 2016-08-19 /pmc/articles/PMC5087672/ /pubmed/27543058 http://dx.doi.org/10.1242/bio.017921 Text en © 2016. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
spellingShingle Research Article
Dubousquet, Vaimiti
Gros, Emmanuelle
Berteaux-Lecellier, Véronique
Viguier, Bruno
Raharivelomanana, Phila
Bertrand, Cédric
Lecellier, Gaël J.
Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
title Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
title_full Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
title_fullStr Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
title_full_unstemmed Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
title_short Changes in fatty acid composition in the giant clam Tridacna maxima in response to thermal stress
title_sort changes in fatty acid composition in the giant clam tridacna maxima in response to thermal stress
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087672/
https://www.ncbi.nlm.nih.gov/pubmed/27543058
http://dx.doi.org/10.1242/bio.017921
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