Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus
Abstract Diatoms, the major eukaryotic phytoplankton in polar regions, are essential to sustain Arctic and Antarctic ecosystems. As such, it is fundamental to understand the physiological mechanisms and associated molecular basis of their resilience to the long polar night. Here, we report an integr...
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ftccsdartic:oai:HAL:hal-04268690v1 2023-12-03T10:13:47+01:00 Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus Joli, Nathalie Concia, Lorenzo Mocaer, Karel Guterman, Julie Laude, Juliette Guerin, Sebastien Sciandra, Theo Bruyant, Flavienne Ait-Mohamed, Ouardia Beguin, Marine Forget, Marie-Helene Bourbousse, Clara Lacour, Thomas Bailleul, Benjamin Tremblay, Jean-Eric Campbell, Douglas Lavaud, Johan Schwab, Yannick Babin, Marcel Bowler, Chris Institut de biologie de l'ENS Paris (IBENS) Département de Biologie - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS) Institut de biologie physico-chimique (IBPC (FR_550)) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2023-01-14 https://hal.science/hal-04268690 https://doi.org/10.1101/2023.01.14.524047 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1101/2023.01.14.524047 hal-04268690 https://hal.science/hal-04268690 BIORXIV: 2023.01.14.524047 doi:10.1101/2023.01.14.524047 https://hal.science/hal-04268690 2023 [SDV]Life Sciences [q-bio] info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftccsdartic https://doi.org/10.1101/2023.01.14.524047 2023-11-04T23:28:08Z Abstract Diatoms, the major eukaryotic phytoplankton in polar regions, are essential to sustain Arctic and Antarctic ecosystems. As such, it is fundamental to understand the physiological mechanisms and associated molecular basis of their resilience to the long polar night. Here, we report an integrative approach revealing that in prolonged darkness, diatom cells enter a state of quiescence associated with reduced metabolic and transcriptional activity during which no cell division occurs. We propose that minimal energy is provided by respiration and degradation of protein, carbohydrate, and lipid stores and that homeostasis is maintained by autophagy in prolonged darkness. We also report internal structural changes that manifest the morphological acclimation of cells to darkness. Our results further indicate that immediately following a return to light, diatom cells are able to use photoprotective mechanisms and rapidly resume photosynthesis. Cell division resumed rates similar to those before darkness. Our study demonstrates the remarkable robustness of polar diatoms to prolonged darkness at low temperatures. Graphical abstract Teaser To survive the long winter, polar diatoms slow down metabolism and express genes to assure survival following return to light. Report Antarc* Antarctic Arctic Phytoplankton polar night Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Antarctic |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Joli, Nathalie Concia, Lorenzo Mocaer, Karel Guterman, Julie Laude, Juliette Guerin, Sebastien Sciandra, Theo Bruyant, Flavienne Ait-Mohamed, Ouardia Beguin, Marine Forget, Marie-Helene Bourbousse, Clara Lacour, Thomas Bailleul, Benjamin Tremblay, Jean-Eric Campbell, Douglas Lavaud, Johan Schwab, Yannick Babin, Marcel Bowler, Chris Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
Abstract Diatoms, the major eukaryotic phytoplankton in polar regions, are essential to sustain Arctic and Antarctic ecosystems. As such, it is fundamental to understand the physiological mechanisms and associated molecular basis of their resilience to the long polar night. Here, we report an integrative approach revealing that in prolonged darkness, diatom cells enter a state of quiescence associated with reduced metabolic and transcriptional activity during which no cell division occurs. We propose that minimal energy is provided by respiration and degradation of protein, carbohydrate, and lipid stores and that homeostasis is maintained by autophagy in prolonged darkness. We also report internal structural changes that manifest the morphological acclimation of cells to darkness. Our results further indicate that immediately following a return to light, diatom cells are able to use photoprotective mechanisms and rapidly resume photosynthesis. Cell division resumed rates similar to those before darkness. Our study demonstrates the remarkable robustness of polar diatoms to prolonged darkness at low temperatures. Graphical abstract Teaser To survive the long winter, polar diatoms slow down metabolism and express genes to assure survival following return to light. |
author2 |
Institut de biologie de l'ENS Paris (IBENS) Département de Biologie - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS) Institut de biologie physico-chimique (IBPC (FR_550)) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Report |
author |
Joli, Nathalie Concia, Lorenzo Mocaer, Karel Guterman, Julie Laude, Juliette Guerin, Sebastien Sciandra, Theo Bruyant, Flavienne Ait-Mohamed, Ouardia Beguin, Marine Forget, Marie-Helene Bourbousse, Clara Lacour, Thomas Bailleul, Benjamin Tremblay, Jean-Eric Campbell, Douglas Lavaud, Johan Schwab, Yannick Babin, Marcel Bowler, Chris |
author_facet |
Joli, Nathalie Concia, Lorenzo Mocaer, Karel Guterman, Julie Laude, Juliette Guerin, Sebastien Sciandra, Theo Bruyant, Flavienne Ait-Mohamed, Ouardia Beguin, Marine Forget, Marie-Helene Bourbousse, Clara Lacour, Thomas Bailleul, Benjamin Tremblay, Jean-Eric Campbell, Douglas Lavaud, Johan Schwab, Yannick Babin, Marcel Bowler, Chris |
author_sort |
Joli, Nathalie |
title |
Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus |
title_short |
Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus |
title_full |
Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus |
title_fullStr |
Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus |
title_full_unstemmed |
Hypometabolism to survive the long polar night in the diatom Fragilariopsis cylindrus |
title_sort |
hypometabolism to survive the long polar night in the diatom fragilariopsis cylindrus |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04268690 https://doi.org/10.1101/2023.01.14.524047 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Phytoplankton polar night |
genre_facet |
Antarc* Antarctic Arctic Phytoplankton polar night |
op_source |
https://hal.science/hal-04268690 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2023.01.14.524047 hal-04268690 https://hal.science/hal-04268690 BIORXIV: 2023.01.14.524047 doi:10.1101/2023.01.14.524047 |
op_doi |
https://doi.org/10.1101/2023.01.14.524047 |
_version_ |
1784260701341089792 |