Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic
This study characterizes the photoacclimation and photoregulation mechanisms that allow calcified macroalgae of the genus Corallina (Corallinales, Rhodophyta) to dominate rock pool habitats across the NE Atlantic despite the highly variable irradiance regimes experienced. Rapid light curves (RLCs) w...
Published in: | European Journal of Phycology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Informa UK Limited
2018
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Online Access: | http://hdl.handle.net/10508/14732 http://hdl.handle.net/10261/321656 https://www.tandfonline.com/doi/pdf/10.1080/09670262.2018.1442586?needAccess=true https://doi.org/10.1080/09670262.2018.1442586 |
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ftcsic:oai:digital.csic.es:10261/321656 2024-02-11T10:05:13+01:00 Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic Williamson, C.J. Perkins, R. Yallop, M.L. Peteiro, César Sánchez, N. Gunnarsson, Karl Gamble, M. Brodie, J. 2018 http://hdl.handle.net/10508/14732 http://hdl.handle.net/10261/321656 https://www.tandfonline.com/doi/pdf/10.1080/09670262.2018.1442586?needAccess=true https://doi.org/10.1080/09670262.2018.1442586 en eng Informa UK Limited Centro Oceanográfico de Santander https://www.tandfonline.com/doi/pdf/10.1080/09670262.2018.1442586?needAccess=true http://hdl.handle.net/10508/14732 http://hdl.handle.net/10261/321656 doi:10.1080/09670262.2018.1442586 23305 open Centro Oceanográfico de Santander Corallina Medio Marino y Protección Ambiental NE Atlantic NPQ photoacclimation photoregulation rapid light curve research article 2018 ftcsic https://doi.org/10.1080/09670262.2018.1442586 2024-01-16T11:46:36Z This study characterizes the photoacclimation and photoregulation mechanisms that allow calcified macroalgae of the genus Corallina (Corallinales, Rhodophyta) to dominate rock pool habitats across the NE Atlantic despite the highly variable irradiance regimes experienced. Rapid light curves (RLCs) were performed with pulse amplitude modulation (PAM) fluorometry in situ across a full seasonal cycle in the UK intertidal with C. officinalis and C. caespitosa. Latitudinal comparisons were performed across the full extent of C. officinalis’ range in the NE Atlantic (Iceland–northern Spain), and for C. caespitosa in northern Spain. Ex situ RLCs with dark recovery were further employed to assess the optimal, as compared with actual, photophysiology across seasons and latitudes. Corallina species were shown to photoacclimate at seasonal timescales to changing irradiance, increasing light-harvesting during low-light autumn/winter periods and protecting photosystems during high-light summer conditions. Seasonal photoacclimation was achieved through alteration in the number of photosystem (PS) units (PSII and light harvesting antennae) over time. Non-photochemical quenching (NPQ) served as an important photoregulation mechanism utilized by Corallina to prevent or minimize photoinhibition over shorter time scales (seconds–hours), though the efficiency of NPQ was dependent on the seasonal-acclimated state. With increasing latitude the efficiency of photoregulation decreased, representing potential differential photoadaptation of Corallina across species ranges in the NE Atlantic. In contrast, highly conserved inter-specific patterns in photophysiological responses to irradiance were apparent. This study demonstrates the photophysiological mechanisms allowing Corallina to optimize use of the variable irradiance conditions apparent in rock pool environments, when and how they are employed, and their limitations. Sí Article in Journal/Newspaper Iceland Digital.CSIC (Spanish National Research Council) European Journal of Phycology 53 3 290 306 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de Santander Corallina Medio Marino y Protección Ambiental NE Atlantic NPQ photoacclimation photoregulation rapid light curve |
spellingShingle |
Centro Oceanográfico de Santander Corallina Medio Marino y Protección Ambiental NE Atlantic NPQ photoacclimation photoregulation rapid light curve Williamson, C.J. Perkins, R. Yallop, M.L. Peteiro, César Sánchez, N. Gunnarsson, Karl Gamble, M. Brodie, J. Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic |
topic_facet |
Centro Oceanográfico de Santander Corallina Medio Marino y Protección Ambiental NE Atlantic NPQ photoacclimation photoregulation rapid light curve |
description |
This study characterizes the photoacclimation and photoregulation mechanisms that allow calcified macroalgae of the genus Corallina (Corallinales, Rhodophyta) to dominate rock pool habitats across the NE Atlantic despite the highly variable irradiance regimes experienced. Rapid light curves (RLCs) were performed with pulse amplitude modulation (PAM) fluorometry in situ across a full seasonal cycle in the UK intertidal with C. officinalis and C. caespitosa. Latitudinal comparisons were performed across the full extent of C. officinalis’ range in the NE Atlantic (Iceland–northern Spain), and for C. caespitosa in northern Spain. Ex situ RLCs with dark recovery were further employed to assess the optimal, as compared with actual, photophysiology across seasons and latitudes. Corallina species were shown to photoacclimate at seasonal timescales to changing irradiance, increasing light-harvesting during low-light autumn/winter periods and protecting photosystems during high-light summer conditions. Seasonal photoacclimation was achieved through alteration in the number of photosystem (PS) units (PSII and light harvesting antennae) over time. Non-photochemical quenching (NPQ) served as an important photoregulation mechanism utilized by Corallina to prevent or minimize photoinhibition over shorter time scales (seconds–hours), though the efficiency of NPQ was dependent on the seasonal-acclimated state. With increasing latitude the efficiency of photoregulation decreased, representing potential differential photoadaptation of Corallina across species ranges in the NE Atlantic. In contrast, highly conserved inter-specific patterns in photophysiological responses to irradiance were apparent. This study demonstrates the photophysiological mechanisms allowing Corallina to optimize use of the variable irradiance conditions apparent in rock pool environments, when and how they are employed, and their limitations. Sí |
format |
Article in Journal/Newspaper |
author |
Williamson, C.J. Perkins, R. Yallop, M.L. Peteiro, César Sánchez, N. Gunnarsson, Karl Gamble, M. Brodie, J. |
author_facet |
Williamson, C.J. Perkins, R. Yallop, M.L. Peteiro, César Sánchez, N. Gunnarsson, Karl Gamble, M. Brodie, J. |
author_sort |
Williamson, C.J. |
title |
Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic |
title_short |
Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic |
title_full |
Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic |
title_fullStr |
Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic |
title_full_unstemmed |
Photoacclimation and photoregulation strategies of Corallina (Corallinales, Rhodophyta) across the NE Atlantic |
title_sort |
photoacclimation and photoregulation strategies of corallina (corallinales, rhodophyta) across the ne atlantic |
publisher |
Informa UK Limited |
publishDate |
2018 |
url |
http://hdl.handle.net/10508/14732 http://hdl.handle.net/10261/321656 https://www.tandfonline.com/doi/pdf/10.1080/09670262.2018.1442586?needAccess=true https://doi.org/10.1080/09670262.2018.1442586 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Centro Oceanográfico de Santander https://www.tandfonline.com/doi/pdf/10.1080/09670262.2018.1442586?needAccess=true http://hdl.handle.net/10508/14732 http://hdl.handle.net/10261/321656 doi:10.1080/09670262.2018.1442586 23305 |
op_rights |
open |
op_doi |
https://doi.org/10.1080/09670262.2018.1442586 |
container_title |
European Journal of Phycology |
container_volume |
53 |
container_issue |
3 |
container_start_page |
290 |
op_container_end_page |
306 |
_version_ |
1790602110668111872 |