|
rdf:type |
|
|
lifeskim:mentions |
|
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pubmed:issue |
1-2
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|
pubmed:dateCreated |
1991-9-9
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|
pubmed:abstractText |
The involvement of H2O2 generated by photosystem II (PSII) in the process of photoinhibition of thylakoids with a functional oxygen-evolving complex (OEC) was investigated. The rate of photoinhibition was decreased to the rate of loss of activity in the dark when bovine Fe-catalase was present during the photoinhibitory illumination. Photoinhibition was accelerated for both Cl(-)-depleted and Cl(-)-sufficient thylakoids when KCN was present to inhibit the thylakoid-bound Fe-catalase. We propose that these preparations become photoinhibited by reactions with H2O2 produced via oxidation of water by the Cl(-)-depleted OEC and by reduction of O2 at the QB site when PSII is illuminated without an electron acceptor.
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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 |
|
|
pubmed:status |
MEDLINE
|
|
pubmed:month |
Jul
|
|
pubmed:issn |
0014-5793
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|
pubmed:author |
|
|
pubmed:issnType |
Print
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|
pubmed:day |
29
|
|
pubmed:volume |
286
|
|
pubmed:owner |
NLM
|
|
pubmed:authorsComplete |
Y
|
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pubmed:pagination |
209-13
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|
pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
|
|
pubmed:year |
1991
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|
pubmed:articleTitle |
The involvement of photosystem II-generated H2O2 in photoinhibition.
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|
pubmed:affiliation |
Department of Botany, Arizona State University, Tempe 85287-1601.
|
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
|
