R. Heath
Aug 6, 1971
Citations
1
Influential Citations
10
Citations
Journal
Biochimica et biophysica acta
Abstract
Abstract Hydrazine is an electron donor to the oxidizing side of Photosystem II in photosynthesis. Hydrazine supports a light-dependent electron flow in chloroplasts inhibited at the water-oxidation site. This reactivated electron flow requires 10–20 mM hydrazine for maximal activity and is inhibited by 3-(3,4-dichlorophenyl)-1,1-dime-thylurea. In addition, hydrazine restores the fluorescence yield of the chlorophyll previously lowered by water-oxidation inhibitors and does not alter the oxidation or reduction of cytochrome f .