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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Nature Portfolio
2021-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-96617-9 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-19T07:07:16Z |
| format | Article |
| id | doaj.art-9b3bd6734c4742f9aeac485d0fff9442 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T07:07:16Z |
| publishDate | 2021-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-9b3bd6734c4742f9aeac485d0fff94422022-12-21T20:31:15ZengNature PortfolioScientific Reports2045-23222021-08-0111111810.1038/s41598-021-96617-9Heat hardening enhances mitochondrial potential for respiration and oxidative defence capacity in the mantle of thermally stressed Mytilus galloprovincialisIoannis Georgoulis0Konstantinos Feidantsis1Ioannis A. Giantsis2Asimina Kakale3Christian Bock4Hans O. Pörtner5Inna M. Sokolova6Basile Michaelidis7Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of ThessalonikiLaboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of ThessalonikiDepartment of Animal Science, Faculty of Agricultural Sciences, University of Western MacedoniaLaboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of ThessalonikiAlfred-Wegener-Institut, Helmholtz-Center for Polar and Marine Research, Integrative EcophysiologyAlfred-Wegener-Institut, Helmholtz-Center for Polar and Marine Research, Integrative EcophysiologyDepartment of Marine Biology, Institute for Biological Sciences, University of RostockLaboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of ThessalonikiAbstract 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.https://doi.org/10.1038/s41598-021-96617-9 |
| spellingShingle | 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 Scientific Reports |
| title | 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_short | 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 |
| url | https://doi.org/10.1038/s41598-021-96617-9 |
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