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Protection of reaction center II from photodamage by low temperature and anaerobiosis in spinach chloroplasts
Author(s) -
Kirilovsky Diana,
Etienne Anne-Lisc
Publication year - 1991
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(91)80149-w
Subject(s) - spinach , photosynthetic reaction centre , chloroplast , chemistry , center (category theory) , photochemistry , biophysics , biology , biochemistry , crystallography , electron transfer , gene
The rate of the irreversible damage to the reaction center II, caused by exposure of spinach thylakoids to high light was slowed down by anacroble conditions and by lowering the temperature. The protective mechanisms of these conditions were different. In both cases F max decreased more slowly than in control photoinhibition. A reversible intermediate step was only observed under unacrobic conditions. This state was inactive for oxygen evolution and it was characterized by an increase of F v .