Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold
Physiological adaptations to tackle cold exposure are crucial for insects living in temperate and arctic environments and here we review how cold adaptation is manifested in terms of mitochondrial function. Cold challenges are diverse, and different insect species have evolved metabolic and mitochon...
Published in: | Current Opinion in Insect Science |
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2023
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ftuniaarhuspubl:oai:pure.atira.dk:publications/6726e59a-ff51-4a8b-b8c9-7188721f165a 2023-10-09T21:48:58+02:00 Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold Lebenzon, Jacqueline E. Overgaard, Johannes Jørgensen, Lisa Bjerregaard 2023-08 https://pure.au.dk/portal/da/publications/chilled-starved-or-frozen(6726e59a-ff51-4a8b-b8c9-7188721f165a).html https://doi.org/10.1016/j.cois.2023.101076 http://www.scopus.com/inward/record.url?scp=85166003112&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Lebenzon , J E , Overgaard , J & Jørgensen , L B 2023 , ' Chilled, starved or frozen : insect mitochondrial adaptations to overcome the cold ' , Current Opinion in Insect Science , vol. 58 , 101076 . https://doi.org/10.1016/j.cois.2023.101076 article 2023 ftuniaarhuspubl https://doi.org/10.1016/j.cois.2023.101076 2023-09-13T22:59:22Z Physiological adaptations to tackle cold exposure are crucial for insects living in temperate and arctic environments and here we review how cold adaptation is manifested in terms of mitochondrial function. Cold challenges are diverse, and different insect species have evolved metabolic and mitochondrial adaptations to i) energize homeostatic regulation at low temperatures ii) stretch energy reserves during prolonged cold exposure, and iii) preserve the structural organization of organelles following extracellular freezing. While the literature is still sparse, our review suggests that cold-adapted insects preserve ATP production at low temperatures by maintaining preferred mitochondrial substrate oxidation, which is otherwise challenged in cold-sensitive species. Chronic cold exposure and metabolic depression during dormancy are linked to reduced mitochondrial metabolism and may involve mitochondrial degradation. Finally, adaptation to extracellular freezing could be associated with the superior structural integrity of the mitochondrial inner membrane following freezing which is linked to cellular and organismal survival. Article in Journal/Newspaper Arctic Aarhus University: Research Arctic Current Opinion in Insect Science 58 101076 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Physiological adaptations to tackle cold exposure are crucial for insects living in temperate and arctic environments and here we review how cold adaptation is manifested in terms of mitochondrial function. Cold challenges are diverse, and different insect species have evolved metabolic and mitochondrial adaptations to i) energize homeostatic regulation at low temperatures ii) stretch energy reserves during prolonged cold exposure, and iii) preserve the structural organization of organelles following extracellular freezing. While the literature is still sparse, our review suggests that cold-adapted insects preserve ATP production at low temperatures by maintaining preferred mitochondrial substrate oxidation, which is otherwise challenged in cold-sensitive species. Chronic cold exposure and metabolic depression during dormancy are linked to reduced mitochondrial metabolism and may involve mitochondrial degradation. Finally, adaptation to extracellular freezing could be associated with the superior structural integrity of the mitochondrial inner membrane following freezing which is linked to cellular and organismal survival. |
format |
Article in Journal/Newspaper |
author |
Lebenzon, Jacqueline E. Overgaard, Johannes Jørgensen, Lisa Bjerregaard |
spellingShingle |
Lebenzon, Jacqueline E. Overgaard, Johannes Jørgensen, Lisa Bjerregaard Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
author_facet |
Lebenzon, Jacqueline E. Overgaard, Johannes Jørgensen, Lisa Bjerregaard |
author_sort |
Lebenzon, Jacqueline E. |
title |
Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
title_short |
Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
title_full |
Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
title_fullStr |
Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
title_full_unstemmed |
Chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
title_sort |
chilled, starved or frozen:insect mitochondrial adaptations to overcome the cold |
publishDate |
2023 |
url |
https://pure.au.dk/portal/da/publications/chilled-starved-or-frozen(6726e59a-ff51-4a8b-b8c9-7188721f165a).html https://doi.org/10.1016/j.cois.2023.101076 http://www.scopus.com/inward/record.url?scp=85166003112&partnerID=8YFLogxK |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Lebenzon , J E , Overgaard , J & Jørgensen , L B 2023 , ' Chilled, starved or frozen : insect mitochondrial adaptations to overcome the cold ' , Current Opinion in Insect Science , vol. 58 , 101076 . https://doi.org/10.1016/j.cois.2023.101076 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.cois.2023.101076 |
container_title |
Current Opinion in Insect Science |
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58 |
container_start_page |
101076 |
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1779312015840378880 |