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Antagonistic effects of light I and II on chlorophyll a fluorescence yield and P700 turnover as monitors of carbon dioxide depletion in intact algal and cyanobacterial cells
Author(s) -
Snel Jan F. H.,
Vos Oscar J.,
Rensen Jack J. S.
Publication year - 1993
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1993.tb01797.x
Subject(s) - p700 , plastoquinone , photochemistry , photosynthesis , carbon dioxide , photosystem , photosystem ii , photosystem i , chlorophyll fluorescence , chlorophyll a , carbon fixation , chemistry , electron acceptor , electron transfer , fluorescence , biophysics , chloroplast , biology , biochemistry , thylakoid , physics , organic chemistry , quantum mechanics , gene
Depletion of carbon dioxide from cells by formate treatment not only causes a cessation of carbon dioxide fixation, but also a dramatic decrease in the rate of electron transfer between Q A , the primary plastoquinone electron acceptor of photosystem II, and the cytochrome b 6 /f complex. We show here that this latter phenomenon can be conveniently monitored by the antagonistic effects of light absorbed in photosystems I and II on chlorophyll a fluorescence yield and P700 turnover in intact cells of green algae and cyanobacteria.