Photoinhibition of PSII Secondary Donors: Relevance to Photoactivation and Sites of Electron Donation
In the absence of either a functional water-oxidizing complex or artificial PSII electron donors, the secondary donors to P680 + are susceptible to weak-light photoinhibition by a mechanism not yet established [1–3]. The ability to restore O2 evolution through the photoactivation process is also weak-light sensitive . We have studied these phenomena in attempts to identify factors which prohibit complete photoactivation, to determine if D+ is specifically required in this process, and to gain some insights into the specificity of Z+ and D+ for the photooxidation of exogenous PSII donors.
KeywordsElectron Donation Residual Rate Secondary Donor Forward Rate Constant Slow Loss
Unable to display preview. Download preview PDF.
- 10.Boussac, A., Picaud, M. and Etienne, A.-L. (1986) Photobiochem. Photobiophys. 10, 201–211Google Scholar