| Role of charge recombination processes in photodamage and photoprotection of the Photosystem II complex. | |
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MedLine Citation:
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PMID: 21288250 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Light induced damage of the photosynthetic apparatus is an important and complex phenomenon, which affects primarily the Photosystem II complex. Here I summarize the current state of understanding, which concerns the role of charge recombination reactions in photodamage and photoprotection. The main mechanism of photodamage induced by visible light appears to be mediated by acceptor side modifications, which develop under light intensity conditions when the capacity of light-independent photosynthetic processes limits the utilization of electrons produced in the initial photoreactions. This situation facilitates triplet chlorophyll formation and singlet oxygen production in the reaction center of Photosystem II, which initiates the damage of electron transport components and protein structure. This mechanism is an important, but not exclusive pathway of photodamage, and light induced inactivation of the Mn cluster of water oxidation may occur in parallel with the singlet oxygen dependent pathway. |
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Authors:
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Imre Vass |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-3 |
Journal Detail:
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Title: Physiologia plantarum Volume: - ISSN: 1399-3054 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 1256322 Medline TA: Physiol Plant Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © Physiologia Plantarum 2011. |
Affiliation:
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Institute of Plant Biology, Biological Research Center, Szeged, Hungary. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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