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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
10
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pubmed:dateCreated |
2007-11-20
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pubmed:abstractText |
The pathways of energy dissipation of excessive absorbed energy in cyanobacteria in comparison with that in higher plants are discussed. Two mechanisms of non-photochemical quenching in cyanobacteria are described. In one case this quenching occurs as light-induced decrease of the fluorescence yield of long-wavelength chlorophylls of the photosystem I trimers induced by inactive reaction centers: P700 cation-radical or P700 in triplet state. In the other case, non-photochemical quenching in cyanobacteria takes place with contribution of water-soluble protein OCP (containing 3 -hydroxyechinenone) that induces reversible quenching of allophycocyanin fluorescence in phycobilisomes. The possible evolutionary pathways of the involvement of carotenoid-binding proteins in non-photochemical quenching are discussed comparing the cyanobacterial OCP and plant PsbS protein.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0006-2979
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
72
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1127-35
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pubmed:meshHeading |
pubmed-meshheading:18021070-Carotenoids,
pubmed-meshheading:18021070-Chlorophyll,
pubmed-meshheading:18021070-Cyanobacteria,
pubmed-meshheading:18021070-Dimerization,
pubmed-meshheading:18021070-Light-Harvesting Protein Complexes,
pubmed-meshheading:18021070-Models, Biological,
pubmed-meshheading:18021070-Molecular Conformation,
pubmed-meshheading:18021070-Oxygen,
pubmed-meshheading:18021070-Photochemistry,
pubmed-meshheading:18021070-Photosynthesis,
pubmed-meshheading:18021070-Phycobilisomes,
pubmed-meshheading:18021070-Phycocyanin,
pubmed-meshheading:18021070-Spectrometry, Fluorescence,
pubmed-meshheading:18021070-Synechocystis
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pubmed:year |
2007
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pubmed:articleTitle |
Non-photochemical quenching of fluorescence in cyanobacteria.
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pubmed:affiliation |
Bach Institute of Biochemistry, Russian Academy of Sciences, 119071 Moscow, Russia. nkarap@inbi.ras.ru
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pubmed:publicationType |
Journal Article,
Review,
Research Support, Non-U.S. Gov't
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