DELAYED FLUORESCENCE FROM CHLORELLA PYRENOIDOSA: EFFECT OF BACKGROUND ILLUMINATION* |
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Authors: | R. H. RUBY |
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Abstract: | Abstract— –With background illumination the delayed fluorescence intensity from Chlorella pyrenoidosa observed at 1 msec following a flash of light is greatly increased. It is shown that the background illumination makes a photosystem II product that increases the delayed fluorescence yield and decays in the dark with second order kinetics. The delayed fluorescence observed at 1 msec appears to be more closely related to the primary energy conversion act than delayed fluorescence observed at longer times which is more indicative of electron transport chemical activity. |
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