Control of excitation transfer in photosynthesis. IV. Kinetics of chlorophyll a fluorescence in Porphyra yezoensis

摘要: The kinetics of chlorophyll a fluorescence were measured at 685 nm in intact cells Porphyra yezoensis during alternate illumination the organism with two colors light, one absorbed by phycoerythrin and other a. Two components change overlapping each time separated; fast component may be controlled rate Photoreaction II which competes emission process, slow light-induced excitation transfer between pigment systems as suggested our previous study6. yield extensively investigated. Terms, “State I” II” are used to describe state transfer. In State I lesser amount energy is delivered Pigment System greater than II. conversion states achieved selective systems. The from toward occurred under Light (light II) half about 10 sec, it saturated light intensity less 1000 ergs×cm−2×sec−1. reverse I) 5 000 ergs×cm−2×sec−1. Light competed interconversion states.