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DELAYED FLUORESCENCE FROM CHLORELLA : II. EFFECTS OF ELECTRON TRANSPORT INHIBITORS DCMU AND NH 2 OH
Author(s) -
Ruby R. H.
Publication year - 1977
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1977.tb07487.x
Subject(s) - dcmu , chlorella pyrenoidosa , fluorescence , electron transport chain , biophysics , photochemistry , chemistry , steady state (chemistry) , chlorella , photosystem ii , biochemistry , photosynthesis , biology , botany , organic chemistry , algae , optics , physics
. –Steady state and transient effects of two electron transport inhibitors (NH 2 OH˙HCl and DCMU) and one uncoupler (FCCP) upon the emission of delayed fluorescence have been studied in whole cells of Chlorella pyrenoidosa. Observations were made on changes in the delayed fluorescence emitted 0.5 ms after a brief flash and 60 ms after the extinction of steady illumination and on changes in the induction effects caused by preillumination. Patterns in the time course of events after inhibitor addition occur which have different characteristics for each of the additives. The observations are consistent with a model of delayed fluorescence production based on the recombination of charges.