Lipidome variations of deep-sea vent shrimps according to acclimation pressure: A homeoviscous response?
| Autor: | Bruce Shillito, Juliette Ravaux, Magali Zbinden, D. Farabos, G. Després, D. Barthelemy, C. Desurmont, Antonin Lamaziere |
|---|---|
| Přispěvatelé: | Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Sorbonne Université (SU), Océanopolis [Brest], Centre de Recherche Saint-Antoine (CRSA), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU) |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification 0303 health sciences Atmospheric pressure [SDV]Life Sciences [q-bio] 010604 marine biology & hydrobiology Membrane lipids Hydrostatic pressure Vaccenic acid Fatty acid Aquatic Science Lipidome Oceanography 01 natural sciences Acclimatization Shrimp 03 medical and health sciences chemistry.chemical_compound chemistry 14. Life underwater Food science ComputingMilieux_MISCELLANEOUS 030304 developmental biology |
| Zdroj: | Deep Sea Research Part I: Oceanographic Research Papers Deep Sea Research Part I: Oceanographic Research Papers, 2020, 161, pp.103285. ⟨10.1016/j.dsr.2020.103285⟩ Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2020, 161, pp.103285. ⟨10.1016/j.dsr.2020.103285⟩ |
| ISSN: | 0967-0637 |
| DOI: | 10.1016/j.dsr.2020.103285 |
| Popis: | The present study questions the ability of marine fauna to modulate the molecular composition of their membrane lipids, as a function of environmental hydrostatic pressure conditions. Specific variations in the cell lipidome composition are presented for the deep-sea hydrothermal vent shrimp Mirocaris fortunata, acclimated at the laboratory for several months at both natural (18 MPa) and atmospheric pressures, but fed with the same diet. These animals display physiological capabilities of acclimation to pressure variations, possibly driven by a particular composition of their lipid species. In particular, it is shown that shrimps exposed to atmospheric pressure exhibit a significantly lower level of the mono-unsaturated fatty acid, vaccenic acid (C18:1n-7), compared to those maintained at natural pressure. The observed fatty acid variations are consistent with a homeoviscous response, i.e. a modulation of the lipidome composition, in response to physical constraints, in order to balance the effects of pressure on membrane order. Additionally, supervised multivariate data analysis was performed for complex lipids and revealed an increase in levels of sterols, sphingomyelin, and ether-phosphatidylethanolamine lipids for animals exposed to atmospheric pressure, with respect to natural pressure. These observations strongly suggest that lipidic domains are involved in the shrimp's response to experimental conditions, and their consistency with a homeoviscous response to pressure is discussed. |
| Databáze: | OpenAIRE |
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