Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms
International audience Over the seasons, Arctic diatom species occupy shifting habitats defined by contrasting light climates, constrained by snow and ice cover dynamics interacting with extreme photoperiod and solar angle variations. How Arctic diatom photoadaptation strategies differ across their...
Published in: | Limnology and Oceanography |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.archives-ouvertes.fr/hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796/document https://hal.archives-ouvertes.fr/hal-02928796/file/2020h-L%26O.pdf https://doi.org/10.1002/lno.11587 |
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ftccsdartic:oai:HAL:hal-02928796v1 2023-05-15T14:41:25+02:00 Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms Croteau, Dany Guerin, Sébastien Bruyant, Flavienne Ferland, Joannie Campbell, Douglas, Babin, Marcel Lavaud, Johann Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) Mount Allison University 2021-02 https://hal.archives-ouvertes.fr/hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796/document https://hal.archives-ouvertes.fr/hal-02928796/file/2020h-L%26O.pdf https://doi.org/10.1002/lno.11587 en eng HAL CCSD Association for the Sciences of Limnology and Oceanography info:eu-repo/semantics/altIdentifier/doi/10.1002/lno.11587 hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796/document https://hal.archives-ouvertes.fr/hal-02928796/file/2020h-L%26O.pdf doi:10.1002/lno.11587 info:eu-repo/semantics/OpenAccess ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.archives-ouvertes.fr/hal-02928796 Limnology and Oceanography, Association for the Sciences of Limnology and Oceanography, 2021, 66 (S1), pp.S231-S245. ⟨10.1002/lno.11587⟩ [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1002/lno.11587 2021-12-05T01:05:39Z International audience Over the seasons, Arctic diatom species occupy shifting habitats defined by contrasting light climates, constrained by snow and ice cover dynamics interacting with extreme photoperiod and solar angle variations. How Arctic diatom photoadaptation strategies differ across their heterogeneous light niches remains a poorly documented but crucial missing link to anticipate Arctic Ocean responses to shrinking sea-ice and increasing light. To address this question, we selected five Arctic diatom species with diverse life traits, representative of distinct light niches across the seasonal light environment continuum: from snow-covered dimly lit bottom ice to summer stratified waters. We studied their photoacclimation plasticity to two growth light levels and the subsequent responses of their nonphotochemical quenching (NPQ) and xanthophyll cycle to both dark incubations and light shifts. We deciphered NPQ and xanthophyll cycle tuning in darkness and their light-dependent induction kinet-ics, which aligned with species' light niche occupancy. In ice-related species, NPQ was sustained in darkness and its induction was more reactive to moderate light shifts. Open-water species triggered strong NPQ induction in darkness and reached higher maximal NPQ under high light. Marginal ice zone species showed strong adaptation to light fluctuations with a dark response fine-tuned depending upon light history. We argue these traits are anchored in diverging photoadaption strategies fostering Arctic diatom success in their respective light niches. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Arctic Ocean Kinet ENVELOPE(165.900,165.900,-73.233,-73.233) Limnology and Oceanography 66 S1 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
spellingShingle |
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology Croteau, Dany Guerin, Sébastien Bruyant, Flavienne Ferland, Joannie Campbell, Douglas, Babin, Marcel Lavaud, Johann Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms |
topic_facet |
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
description |
International audience Over the seasons, Arctic diatom species occupy shifting habitats defined by contrasting light climates, constrained by snow and ice cover dynamics interacting with extreme photoperiod and solar angle variations. How Arctic diatom photoadaptation strategies differ across their heterogeneous light niches remains a poorly documented but crucial missing link to anticipate Arctic Ocean responses to shrinking sea-ice and increasing light. To address this question, we selected five Arctic diatom species with diverse life traits, representative of distinct light niches across the seasonal light environment continuum: from snow-covered dimly lit bottom ice to summer stratified waters. We studied their photoacclimation plasticity to two growth light levels and the subsequent responses of their nonphotochemical quenching (NPQ) and xanthophyll cycle to both dark incubations and light shifts. We deciphered NPQ and xanthophyll cycle tuning in darkness and their light-dependent induction kinet-ics, which aligned with species' light niche occupancy. In ice-related species, NPQ was sustained in darkness and its induction was more reactive to moderate light shifts. Open-water species triggered strong NPQ induction in darkness and reached higher maximal NPQ under high light. Marginal ice zone species showed strong adaptation to light fluctuations with a dark response fine-tuned depending upon light history. We argue these traits are anchored in diverging photoadaption strategies fostering Arctic diatom success in their respective light niches. |
author2 |
Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) Mount Allison University |
format |
Article in Journal/Newspaper |
author |
Croteau, Dany Guerin, Sébastien Bruyant, Flavienne Ferland, Joannie Campbell, Douglas, Babin, Marcel Lavaud, Johann |
author_facet |
Croteau, Dany Guerin, Sébastien Bruyant, Flavienne Ferland, Joannie Campbell, Douglas, Babin, Marcel Lavaud, Johann |
author_sort |
Croteau, Dany |
title |
Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms |
title_short |
Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms |
title_full |
Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms |
title_fullStr |
Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms |
title_full_unstemmed |
Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms |
title_sort |
contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in arctic diatoms |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796/document https://hal.archives-ouvertes.fr/hal-02928796/file/2020h-L%26O.pdf https://doi.org/10.1002/lno.11587 |
long_lat |
ENVELOPE(165.900,165.900,-73.233,-73.233) |
geographic |
Arctic Arctic Ocean Kinet |
geographic_facet |
Arctic Arctic Ocean Kinet |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.archives-ouvertes.fr/hal-02928796 Limnology and Oceanography, Association for the Sciences of Limnology and Oceanography, 2021, 66 (S1), pp.S231-S245. ⟨10.1002/lno.11587⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/lno.11587 hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796 https://hal.archives-ouvertes.fr/hal-02928796/document https://hal.archives-ouvertes.fr/hal-02928796/file/2020h-L%26O.pdf doi:10.1002/lno.11587 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/lno.11587 |
container_title |
Limnology and Oceanography |
container_volume |
66 |
container_issue |
S1 |
_version_ |
1766313188361502720 |