Photoprotection in plants: A new light on photosystem II damage
Date
2011
Authors
Takahashi, Shunichi
Badger, Murray
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Sunlight damages photosynthetic machinery, primarily photosystem II (PSII), and causes photoinhibition that can limit plant photosynthetic activity, growth and productivity. The extent of photoinhibition is associated with a balance between the rate of photodamage and its repair. Recent studies have shown that light absorption by the manganese cluster in the oxygen-evolving complex of PSII causes primary photodamage, whereas excess light absorbed by light-harvesting complexes acts to cause inhibition of the PSII repair process chiefly through the generation of reactive oxygen species. As we review here, PSII photodamage and the inhibition of repair are therefore alleviated by photoprotection mechanisms associated with avoiding light absorption by the manganese cluster and successfully consuming or dissipating the light energy absorbed by photosynthetic pigments, respectively.
Description
Keywords
Keywords: manganese; metabolism; photosynthesis; photosystem II; plant; plant leaf; radiation exposure; review; sunlight; Manganese; Photosynthesis; Photosystem II Protein Complex; Plant Leaves; Plants; Sunlight
Citation
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Source
Trends in Plant Science
Type
Journal article
Book Title
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2037-12-31