Photoreactions of Cytochrome b563 and f554 in Intact Spinach Chloroplasts: Regulation of Cyclic Electron Flow
- 1 January 1979
- journal article
- Published by Wiley in European Journal of Biochemistry
- Vol. 93 (2) , 287-293
- https://doi.org/10.1111/j.1432-1033.1979.tb12822.x
Abstract
In intact spinach chloroplasts cytochrome b563 and cytochrome f show an antagonistic redox behaviour in the extent and kinetics of light/dark-induced absorbance changes. The extent of cytochrome b563 photoreduction appears to be influenced by the redox state of plastoquinone suggesting a regulation of cyclic electron flow at this level. Far-red illumination induces a membrane state with altered redox reactions of both cytochromes at a more oxidized level.Keywords
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