Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta)
The potential to acclimate photosynthesis to sub- and supra-optimal temperatures was investigated in seven isolates of Valonia utricularis (Roth) C. Agardh, a green macrophyte with a tropical to warm-temperate distribution. Photosynthesis-light response curves were obtained by measuring chlorophyll...
Published in: | Phycologia |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2006
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Online Access: | http://hdl.handle.net/11370/b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f https://research.rug.nl/en/publications/differences-in-acclimation-potential-of-photosynthesis-in-seven-isolates-of-the-tropical-to-warm-temperate-macrophyte-valonia-utricularis-chlorophyta(b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f).html https://doi.org/10.2216/05-03.1 |
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ftunigroningenpu:oai:pure.rug.nl:publications/b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f 2023-05-15T17:41:41+02:00 Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) Eggert, Anja Visser, Ronald J. W. Van Hasselt, Philip R. Breeman, Anneke M. 2006-09 http://hdl.handle.net/11370/b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f https://research.rug.nl/en/publications/differences-in-acclimation-potential-of-photosynthesis-in-seven-isolates-of-the-tropical-to-warm-temperate-macrophyte-valonia-utricularis-chlorophyta(b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f).html https://doi.org/10.2216/05-03.1 eng eng info:eu-repo/semantics/closedAccess Eggert , A , Visser , R J W , Van Hasselt , P R & Breeman , A M 2006 , ' Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) ' , Phycologia , vol. 45 , no. 5 , pp. 546-556 . https://doi.org/10.2216/05-03.1 ISSN:0031-8884 light-harvesting photosynthesis thermal acclimation Valonia utricularis PHOTOSYSTEM-II XANTHOPHYLL-CYCLE ECOTYPIC DIFFERENTIATION MARINE-PHYTOPLANKTON THERMAL-ACCLIMATION CHLORELLA-VULGARIS ELECTRON-TRANSPORT GROWTH TEMPERATURE CHONDRUS-CRISPUS MAIZE LEAVES article 2006 ftunigroningenpu https://doi.org/10.2216/05-03.1 2022-01-22T18:11:40Z The potential to acclimate photosynthesis to sub- and supra-optimal temperatures was investigated in seven isolates of Valonia utricularis (Roth) C. Agardh, a green macrophyte with a tropical to warm-temperate distribution. Photosynthesis-light response curves were obtained by measuring chlorophyll a fluorescence characteristics of algae grown at optimal (25 degrees C), sub- and supra-optimal temperatures. Suboptimal temperatures were chosen to support 30% of the maximum relative growth rate in each isolate. Thermal acclimation was investigated by comparing short-term and long-term temperature effects on the initial rate of increase of the relative electron transport rate (rETR) and the maximum rETR under light-saturating conditions. Isolates from the northeast Atlantic and the Mediterranean all showed a strong potential to acclimate maximum rETR to suboptimal growth temperatures, i.e. short-term temperature effects were diminished after acclimation. However, photoinhibition, measured as a decrease of the maximal quantum yield (F(v)/F(m)), was found when plants were grown at 30 degrees C. The isolates reduced light harvesting at 30 degrees C by decreasing total chlorophyll content and by increasing the chlorophyll a/b ratio. Up-regulation of photoprotective processes by the xanthophyll cycle pigments was not observed. In contrast, isolates from the Indo-west Pacific were unable to acclimate photosynthesis to suboptimal growth temperatures and these temperatures were strongly photoinhibiting, even though adjustments on the pigment level were observed. All Indo-west Pacific isolates reached comparable maximum rETR values at 30 and 25 degrees C. Thus, the Atlantic/Mediterranean isolates had a stronger potential to acclimate photosynthetic rates at suboptimal growth temperatures compared to the Indo-west Pacific isolates, which was accompanied by losses at 30 degrees C. The results are discussed in a biogeographical context. Article in Journal/Newspaper Northeast Atlantic University of Groningen research database Pacific Phycologia 45 5 546 556 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
light-harvesting photosynthesis thermal acclimation Valonia utricularis PHOTOSYSTEM-II XANTHOPHYLL-CYCLE ECOTYPIC DIFFERENTIATION MARINE-PHYTOPLANKTON THERMAL-ACCLIMATION CHLORELLA-VULGARIS ELECTRON-TRANSPORT GROWTH TEMPERATURE CHONDRUS-CRISPUS MAIZE LEAVES |
spellingShingle |
light-harvesting photosynthesis thermal acclimation Valonia utricularis PHOTOSYSTEM-II XANTHOPHYLL-CYCLE ECOTYPIC DIFFERENTIATION MARINE-PHYTOPLANKTON THERMAL-ACCLIMATION CHLORELLA-VULGARIS ELECTRON-TRANSPORT GROWTH TEMPERATURE CHONDRUS-CRISPUS MAIZE LEAVES Eggert, Anja Visser, Ronald J. W. Van Hasselt, Philip R. Breeman, Anneke M. Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) |
topic_facet |
light-harvesting photosynthesis thermal acclimation Valonia utricularis PHOTOSYSTEM-II XANTHOPHYLL-CYCLE ECOTYPIC DIFFERENTIATION MARINE-PHYTOPLANKTON THERMAL-ACCLIMATION CHLORELLA-VULGARIS ELECTRON-TRANSPORT GROWTH TEMPERATURE CHONDRUS-CRISPUS MAIZE LEAVES |
description |
The potential to acclimate photosynthesis to sub- and supra-optimal temperatures was investigated in seven isolates of Valonia utricularis (Roth) C. Agardh, a green macrophyte with a tropical to warm-temperate distribution. Photosynthesis-light response curves were obtained by measuring chlorophyll a fluorescence characteristics of algae grown at optimal (25 degrees C), sub- and supra-optimal temperatures. Suboptimal temperatures were chosen to support 30% of the maximum relative growth rate in each isolate. Thermal acclimation was investigated by comparing short-term and long-term temperature effects on the initial rate of increase of the relative electron transport rate (rETR) and the maximum rETR under light-saturating conditions. Isolates from the northeast Atlantic and the Mediterranean all showed a strong potential to acclimate maximum rETR to suboptimal growth temperatures, i.e. short-term temperature effects were diminished after acclimation. However, photoinhibition, measured as a decrease of the maximal quantum yield (F(v)/F(m)), was found when plants were grown at 30 degrees C. The isolates reduced light harvesting at 30 degrees C by decreasing total chlorophyll content and by increasing the chlorophyll a/b ratio. Up-regulation of photoprotective processes by the xanthophyll cycle pigments was not observed. In contrast, isolates from the Indo-west Pacific were unable to acclimate photosynthesis to suboptimal growth temperatures and these temperatures were strongly photoinhibiting, even though adjustments on the pigment level were observed. All Indo-west Pacific isolates reached comparable maximum rETR values at 30 and 25 degrees C. Thus, the Atlantic/Mediterranean isolates had a stronger potential to acclimate photosynthetic rates at suboptimal growth temperatures compared to the Indo-west Pacific isolates, which was accompanied by losses at 30 degrees C. The results are discussed in a biogeographical context. |
format |
Article in Journal/Newspaper |
author |
Eggert, Anja Visser, Ronald J. W. Van Hasselt, Philip R. Breeman, Anneke M. |
author_facet |
Eggert, Anja Visser, Ronald J. W. Van Hasselt, Philip R. Breeman, Anneke M. |
author_sort |
Eggert, Anja |
title |
Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) |
title_short |
Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) |
title_full |
Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) |
title_fullStr |
Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) |
title_full_unstemmed |
Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) |
title_sort |
differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte valonia utricularis (chlorophyta) |
publishDate |
2006 |
url |
http://hdl.handle.net/11370/b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f https://research.rug.nl/en/publications/differences-in-acclimation-potential-of-photosynthesis-in-seven-isolates-of-the-tropical-to-warm-temperate-macrophyte-valonia-utricularis-chlorophyta(b1ef3c5c-538b-41f3-9aaa-c2a282b43b6f).html https://doi.org/10.2216/05-03.1 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Eggert , A , Visser , R J W , Van Hasselt , P R & Breeman , A M 2006 , ' Differences in acclimation potential of photosynthesis in seven isolates of the tropical to warm temperate macrophyte Valonia utricularis (Chlorophyta) ' , Phycologia , vol. 45 , no. 5 , pp. 546-556 . https://doi.org/10.2216/05-03.1 ISSN:0031-8884 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.2216/05-03.1 |
container_title |
Phycologia |
container_volume |
45 |
container_issue |
5 |
container_start_page |
546 |
op_container_end_page |
556 |
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1766143368193114112 |