Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis

Abstract Ectotherms are exposed to a range of environmental temperatures and may face extremes beyond their upper thermal limits. Such temperature extremes can stimulate aerobic metabolism toward its maximum, a decline in aerobic substrate oxidation, and a parallel increase of anaerobic metabolism,...

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Autores principales:	Ioannis Georgoulis, Konstantinos Feidantsis, Ioannis A. Giantsis, Asimina Kakale, Christian Bock, Hans O. Pörtner, Inna M. Sokolova, Basile Michaelidis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9b3bd6734c4742f9aeac485d0fff9442
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spelling	oai:doaj.org-article:9b3bd6734c4742f9aeac485d0fff94422021-12-02T19:02:35ZHeat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis10.1038/s41598-021-96617-92045-2322https://doaj.org/article/9b3bd6734c4742f9aeac485d0fff94422021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96617-9https://doaj.org/toc/2045-2322Abstract Ectotherms are exposed to a range of environmental temperatures and may face extremes beyond their upper thermal limits. Such temperature extremes can stimulate aerobic metabolism toward its maximum, a decline in aerobic substrate oxidation, and a parallel increase of anaerobic metabolism, combined with ROS generation and oxidative stress. Under these stressful conditions, marine organisms recruit several defensive strategies for their maintenance and survival. However, thermal tolerance of ectothermic organisms may be increased after a brief exposure to sub-lethal temperatures, a process known as "hardening". In our study, we examined the ability of M. galloprovincialis to increase its thermal tolerance under the effect of elevated temperatures (24, 26 and 28 °C) through the "hardening" process. Our results demonstrate that this process can increase the heat tolerance and antioxidant defense of heat hardened mussels through more efficient ETS activity when exposed to temperatures beyond 24 °C, compared to non-hardened individuals. Enhanced cell protection is reflected in better adaptive strategies of heat hardened mussels, and thus decreased mortality. Although hardening seems a promising process for the maintenance of aquacultured populations under increased seasonal temperatures, further investigation of the molecular and cellular mechanisms regulating mussels’ heat resistance is required.Ioannis GeorgoulisKonstantinos FeidantsisIoannis A. GiantsisAsimina KakaleChristian BockHans O. PörtnerInna M. SokolovaBasile MichaelidisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ioannis Georgoulis Konstantinos Feidantsis Ioannis A. Giantsis Asimina Kakale Christian Bock Hans O. Pörtner Inna M. Sokolova Basile Michaelidis Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis
description	Abstract Ectotherms are exposed to a range of environmental temperatures and may face extremes beyond their upper thermal limits. Such temperature extremes can stimulate aerobic metabolism toward its maximum, a decline in aerobic substrate oxidation, and a parallel increase of anaerobic metabolism, combined with ROS generation and oxidative stress. Under these stressful conditions, marine organisms recruit several defensive strategies for their maintenance and survival. However, thermal tolerance of ectothermic organisms may be increased after a brief exposure to sub-lethal temperatures, a process known as "hardening". In our study, we examined the ability of M. galloprovincialis to increase its thermal tolerance under the effect of elevated temperatures (24, 26 and 28 °C) through the "hardening" process. Our results demonstrate that this process can increase the heat tolerance and antioxidant defense of heat hardened mussels through more efficient ETS activity when exposed to temperatures beyond 24 °C, compared to non-hardened individuals. Enhanced cell protection is reflected in better adaptive strategies of heat hardened mussels, and thus decreased mortality. Although hardening seems a promising process for the maintenance of aquacultured populations under increased seasonal temperatures, further investigation of the molecular and cellular mechanisms regulating mussels’ heat resistance is required.
format	article
author	Ioannis Georgoulis Konstantinos Feidantsis Ioannis A. Giantsis Asimina Kakale Christian Bock Hans O. Pörtner Inna M. Sokolova Basile Michaelidis
author_facet	Ioannis Georgoulis Konstantinos Feidantsis Ioannis A. Giantsis Asimina Kakale Christian Bock Hans O. Pörtner Inna M. Sokolova Basile Michaelidis
author_sort	Ioannis Georgoulis
title	Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis
title_short	Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis
title_full	Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis
title_fullStr	Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis
title_full_unstemmed	Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis
title_sort	heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed mytilus galloprovincialis
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9b3bd6734c4742f9aeac485d0fff9442
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Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialis

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