The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance
The effects of iron limitation on photoacclimation to dynamic irradiance were studied in Phaeocystis antarctica G. Karst. and Fragilariopsis cylindrus (Grunow) W. Krieg. in terms of growth rate, photosynthetic parameters, pigment composition, and fluorescence characteristics. Under dynamic light con...
Published in: | Journal of Phycology |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2012
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Online Access: | https://hdl.handle.net/11370/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 https://research.rug.nl/en/publications/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 https://doi.org/10.1111/j.1529-8817.2011.01098.x |
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ftunigroningenpu:oai:pure.rug.nl:publications/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 2024-06-23T07:45:57+00:00 The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance Alderkamp, Anne-Carlijn Kulk, Gemma Buma, Anita G. J. Visser, Ronald J. W. Van Dijken, Gert L. Mills, Matthew M. Arrigo, Kevin R. 2012-02 https://hdl.handle.net/11370/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 https://research.rug.nl/en/publications/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 https://doi.org/10.1111/j.1529-8817.2011.01098.x eng eng https://research.rug.nl/en/publications/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 info:eu-repo/semantics/closedAccess Alderkamp , A-C , Kulk , G , Buma , A G J , Visser , R J W , Van Dijken , G L , Mills , M M & Arrigo , K R 2012 , ' The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance ' , Journal of Phycology , vol. 48 , no. 1 , pp. 45-59 . https://doi.org/10.1111/j.1529-8817.2011.01098.x Antarctic diatom iron nonphotochemical quenching Phaeocystis photoinhibition photoprotection photosynthesis Ross Sea xanthophyll PHAEODACTYLUM-TRICORNUTUM BACILLARIOPHYCEAE CHAETOCEROS-BREVIS BACILLARIOPHYCEAE PHYTOPLANKTON TAXONOMIC VARIABILITY PHOTOSYNTHETIC ELECTRON-TRANSPORT SPECTRAL ABSORPTION-COEFFICIENTS EMILIANIA-HUXLEYI HAPTOPHYTA SOUTHERN-OCEAN PHOTOSYSTEM-II CHLOROPHYLL FLUORESCENCE article 2012 ftunigroningenpu https://doi.org/10.1111/j.1529-8817.2011.01098.x 2024-05-27T16:05:39Z The effects of iron limitation on photoacclimation to dynamic irradiance were studied in Phaeocystis antarctica G. Karst. and Fragilariopsis cylindrus (Grunow) W. Krieg. in terms of growth rate, photosynthetic parameters, pigment composition, and fluorescence characteristics. Under dynamic light conditions mimicking vertical mixing below the euphotic zone, P. antarctica displayed higher growth rates than F. cylindrus both under iron (Fe)replete and Fe-limiting conditions. Both species showed xanthophyll de-epoxidation that was accompanied by low levels of nonphotochemical quenching (NPQ) during the irradiance maximum of the light cycle. The potential for NPQ at light levels corresponding to full sunlight was substantial in both species and increased under Fe limitation in F. cylindrus. Although the decline in Fv/Fm under Fe limitation was similar in both species, the accompanying decrease in the maximum rate of photosynthesis and growth rate was much stronger in F. cylindrus. Analysis of the electron transport rates through PSII and on to carbon (C) fixation revealed a large potential for photoprotective cyclic electron transport (CET) in F. cylindrus, particularly under Fe limitation. Probably, CET aided the photoprotection in F. cylindrus, but it also reduced photosynthetic efficiency at higher light intensities. P. antarctica, on the other hand, was able to efficiently use electrons flowing through PSII for C fixation at all light levels, particularly under Fe limitation. Thus, Fe limitation enhanced the photophysiological differences between P. antarctica and diatoms, supporting field observations where P. antarctica is found to dominate deeply mixed water columns, whereas diatoms dominate shallower mixed layers. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Southern Ocean University of Groningen research database Antarctic Ross Sea Southern Ocean Journal of Phycology 48 1 45 59 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
Antarctic diatom iron nonphotochemical quenching Phaeocystis photoinhibition photoprotection photosynthesis Ross Sea xanthophyll PHAEODACTYLUM-TRICORNUTUM BACILLARIOPHYCEAE CHAETOCEROS-BREVIS BACILLARIOPHYCEAE PHYTOPLANKTON TAXONOMIC VARIABILITY PHOTOSYNTHETIC ELECTRON-TRANSPORT SPECTRAL ABSORPTION-COEFFICIENTS EMILIANIA-HUXLEYI HAPTOPHYTA SOUTHERN-OCEAN PHOTOSYSTEM-II CHLOROPHYLL FLUORESCENCE |
spellingShingle |
Antarctic diatom iron nonphotochemical quenching Phaeocystis photoinhibition photoprotection photosynthesis Ross Sea xanthophyll PHAEODACTYLUM-TRICORNUTUM BACILLARIOPHYCEAE CHAETOCEROS-BREVIS BACILLARIOPHYCEAE PHYTOPLANKTON TAXONOMIC VARIABILITY PHOTOSYNTHETIC ELECTRON-TRANSPORT SPECTRAL ABSORPTION-COEFFICIENTS EMILIANIA-HUXLEYI HAPTOPHYTA SOUTHERN-OCEAN PHOTOSYSTEM-II CHLOROPHYLL FLUORESCENCE Alderkamp, Anne-Carlijn Kulk, Gemma Buma, Anita G. J. Visser, Ronald J. W. Van Dijken, Gert L. Mills, Matthew M. Arrigo, Kevin R. The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance |
topic_facet |
Antarctic diatom iron nonphotochemical quenching Phaeocystis photoinhibition photoprotection photosynthesis Ross Sea xanthophyll PHAEODACTYLUM-TRICORNUTUM BACILLARIOPHYCEAE CHAETOCEROS-BREVIS BACILLARIOPHYCEAE PHYTOPLANKTON TAXONOMIC VARIABILITY PHOTOSYNTHETIC ELECTRON-TRANSPORT SPECTRAL ABSORPTION-COEFFICIENTS EMILIANIA-HUXLEYI HAPTOPHYTA SOUTHERN-OCEAN PHOTOSYSTEM-II CHLOROPHYLL FLUORESCENCE |
description |
The effects of iron limitation on photoacclimation to dynamic irradiance were studied in Phaeocystis antarctica G. Karst. and Fragilariopsis cylindrus (Grunow) W. Krieg. in terms of growth rate, photosynthetic parameters, pigment composition, and fluorescence characteristics. Under dynamic light conditions mimicking vertical mixing below the euphotic zone, P. antarctica displayed higher growth rates than F. cylindrus both under iron (Fe)replete and Fe-limiting conditions. Both species showed xanthophyll de-epoxidation that was accompanied by low levels of nonphotochemical quenching (NPQ) during the irradiance maximum of the light cycle. The potential for NPQ at light levels corresponding to full sunlight was substantial in both species and increased under Fe limitation in F. cylindrus. Although the decline in Fv/Fm under Fe limitation was similar in both species, the accompanying decrease in the maximum rate of photosynthesis and growth rate was much stronger in F. cylindrus. Analysis of the electron transport rates through PSII and on to carbon (C) fixation revealed a large potential for photoprotective cyclic electron transport (CET) in F. cylindrus, particularly under Fe limitation. Probably, CET aided the photoprotection in F. cylindrus, but it also reduced photosynthetic efficiency at higher light intensities. P. antarctica, on the other hand, was able to efficiently use electrons flowing through PSII for C fixation at all light levels, particularly under Fe limitation. Thus, Fe limitation enhanced the photophysiological differences between P. antarctica and diatoms, supporting field observations where P. antarctica is found to dominate deeply mixed water columns, whereas diatoms dominate shallower mixed layers. |
format |
Article in Journal/Newspaper |
author |
Alderkamp, Anne-Carlijn Kulk, Gemma Buma, Anita G. J. Visser, Ronald J. W. Van Dijken, Gert L. Mills, Matthew M. Arrigo, Kevin R. |
author_facet |
Alderkamp, Anne-Carlijn Kulk, Gemma Buma, Anita G. J. Visser, Ronald J. W. Van Dijken, Gert L. Mills, Matthew M. Arrigo, Kevin R. |
author_sort |
Alderkamp, Anne-Carlijn |
title |
The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance |
title_short |
The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance |
title_full |
The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance |
title_fullStr |
The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance |
title_full_unstemmed |
The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance |
title_sort |
effect of iron limitation on the photophysiology of phaeocystis antarctica (prymnesiophyceae) and fragilariopsis cylindrus (bacillariophyceae) under dynamic irradiance |
publishDate |
2012 |
url |
https://hdl.handle.net/11370/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 https://research.rug.nl/en/publications/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 https://doi.org/10.1111/j.1529-8817.2011.01098.x |
geographic |
Antarctic Ross Sea Southern Ocean |
geographic_facet |
Antarctic Ross Sea Southern Ocean |
genre |
Antarc* Antarctic Antarctica Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Southern Ocean |
op_source |
Alderkamp , A-C , Kulk , G , Buma , A G J , Visser , R J W , Van Dijken , G L , Mills , M M & Arrigo , K R 2012 , ' The effect of iron limitation on the photophysiology of Phaeocystis antarctica (Prymnesiophyceae) and Fragilariopsis cylindrus (Bacillariophyceae) under dynamic irradiance ' , Journal of Phycology , vol. 48 , no. 1 , pp. 45-59 . https://doi.org/10.1111/j.1529-8817.2011.01098.x |
op_relation |
https://research.rug.nl/en/publications/acaaf4a4-2aa5-4162-b6ba-87e9c19c9947 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/j.1529-8817.2011.01098.x |
container_title |
Journal of Phycology |
container_volume |
48 |
container_issue |
1 |
container_start_page |
45 |
op_container_end_page |
59 |
_version_ |
1802643197368729600 |