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A Dual Strategy to ...
A Dual Strategy to Cope with High Light in Chlamydomonas reinhardtii
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- Allorent, Guillaume (author)
- Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France;Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France;Université Grenoble 1, F-38041 Grenoble, France;Institut National Recherche Agronomique, Unité Mixte de Recherche 1200, F-38054 Grenoble, France
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- Tokutsu, Ryutaro (author)
- Division of Environmental Photobiology, National Institute for Basic Biology, 444-8585 Okazaki, Japan
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- Roach, Thomas (author)
- Commissariat à l'Energie Atomique et Energies Alternatives Saclay, Institute of Biology and Technology-Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8221, Service de Bioénergétique, Biologie Structurale et Mécanisme, 91191 Gif-sur-Yvette cedex, France
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- Peers, Graham (author)
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1062
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- Cardol, Pierre (author)
- Laboratoire de Génétique des Microorganismes Département des Sciences de la Vie, Université de Liège, B-4000 Liege, Belgium
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- Girard-Bascou, Jacqueline (author)
- Unité Mixte de Recherche 7141, Centre National de la Recherche Scientifique/Université Pierre et Marie Curie Institut de Biologie Physico Chimique, F-75005 Paris, France
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- Seigneurin-Berny, Daphné (author)
- Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France;Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France;Université Grenoble 1, F-38041 Grenoble, France;Institut National Recherche Agronomique, Unité Mixte de Recherche 1200, F-38054 Grenoble, France
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- Petroutsos, Dimitris (author)
- Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France;Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France;Université Grenoble 1, F-38041 Grenoble, France;Institut National Recherche Agronomique, Unité Mixte de Recherche 1200, F-38054 Grenoble, France
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- Kuntz, Marcel (author)
- Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France;Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France;Université Grenoble 1, F-38041 Grenoble, France;Institut National Recherche Agronomique, Unité Mixte de Recherche 1200, F-38054 Grenoble, France
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- Breyton, Cécile (author)
- Unité Mixte de Recherche 5075, Centre National de la Recherche Scientifique/Commissariat à l’Energie Atomique/Université Grenoble 1, Institut de Biologie Structurale, F-38054 Grenoble, France
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- Franck, Fabrice (author)
- Laboratoire de Bioénergétique, Département des Sciences de la Vie, Université de Liège, B-4000 Liege, Belgium
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- Wollman, Francis-André (author)
- Unité Mixte de Recherche 7141, Centre National de la Recherche Scientifique/Université Pierre et Marie Curie Institut de Biologie Physico Chimique, F-75005 Paris, France
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- Niyogi, Krishna K. (author)
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720-3102
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- Krieger-Liszkay, Anja (author)
- Commissariat à l'Energie Atomique et Energies Alternatives Saclay, Institute of Biology and Technology-Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8221, Service de Bioénergétique, Biologie Structurale et Mécanisme, 91191 Gif-sur-Yvette cedex, France
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- Minagawa, Jun (author)
- Division of Environmental Photobiology, National Institute for Basic Biology, 444-8585 Okazaki, Japan
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- Finazzi, Giovanni (author)
- Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France;Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France;Université Grenoble 1, F-38041 Grenoble, France;Institut National Recherche Agronomique, Unité Mixte de Recherche 1200, F-38054 Grenoble, France
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(creator_code:org_t)
- 2013-02-19
- 2013
- English.
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In: The Plant Cell. - : Oxford University Press. - 1040-4651 .- 1532-298X. ; 25:2, s. 545-557
- Related links:
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http://www.plantcell...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Absorption of light in excess of the capacity for photosynthetic electron transport is damaging to photosynthetic organisms. Several mechanisms exist to avoid photodamage, which are collectively referred to as nonphotochemical quenching. This term comprises at least two major processes. State transitions (qT) represent changes in the relative antenna sizes of photosystems II and I. High energy quenching (qE) is the increased thermal dissipation of light energy triggered by lumen acidification. To investigate the respective roles of qE and qT in photoprotection, a mutant (npq4 stt7-9) was generated in Chlamydomonas reinhardtii by crossing the state transition-deficient mutant (stt7-9) with a strain having a largely reduced qE capacity (npq4). The comparative phenotypic analysis of the wild type, single mutants, and double mutants reveals that both state transitions and qE are induced by high light. Moreover, the double mutant exhibits an increased photosensitivity with respect to the single mutants and the wild type. Therefore, we suggest that besides qE, state transitions also play a photoprotective role during high light acclimation of the cells, most likely by decreasing hydrogen peroxide production. These results are discussed in terms of the relative photoprotective benefit related to thermal dissipation of excess light and/or to the physical displacement of antennas from photosystem II.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Allorent, Guilla ...
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Tokutsu, Ryutaro
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Roach, Thomas
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Peers, Graham
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Cardol, Pierre
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Girard-Bascou, J ...
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Seigneurin-Berny ...
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Petroutsos, Dimi ...
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Kuntz, Marcel
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Breyton, Cécile
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Franck, Fabrice
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Wollman, Francis ...
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Niyogi, Krishna ...
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Krieger-Liszkay, ...
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Minagawa, Jun
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Finazzi, Giovann ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
- Articles in the publication
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The Plant Cell
- By the university
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Uppsala University