Reduction of pheophytin in the primary light reaction of photosystem II.
D002734:Chlorophyll / Q000031:analogs & derivatives*; D002736:Chloroplasts / Q000378:metabolism; D003624:Darkness; D007700:Kinetics; D008027:Light; D010084:Oxidation-Reduction; D010674:Pheophytins / Q000378:metabolism*; D010788:Photosynthesis; D010944:Plants; D013050:Spectrometry, Fluorescence
D010674:Pheophytins; D002734:Chlorophyll