Relative optical cross-section of the two photosystems during the life cycle of Chlorella.
Low-temperature fluorescence spectroscopy of Chlorella was used to monitor changes in photon utilization by the two photosystems during the life cycle. Changes in the relative optical cross-section σ of the photosystems are brought about by changes in partition of the antenna molecules between the photosystems. The relative cross-section σ is not affected by the State 1/State 2 transitions.
Department of Biophysics, József Attila University, H-6722, Szeged, Hungary.
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