Abstract
Four possible explanations are offered to account for low fluorescence increase observed for purple bacteria under transition from active to inhibited photosynthesis. The increase observed is inconsistent with high (≅1.0) yield of primary photosynthetic process of P890 photooxidation. The dependences of fluorescence yield and lifetime on the portion of active reaction centres have been analysed for each case. Experimental investigation carried out favours the existence of background fluorescence together with fluorescence, whose quantum yield correlates with the reaction centre functional state. The important conclusion is made that lifetime of photosynthetic fluorescence is much lower than 1 nsec and energy is transferred to the reaction centres by a mechanism other than inductive-resonance.
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Borisov, A.Y., Godik, V.I. Energy transfer in bacterial photosynthesis. J Bioenerg Biomembr 3, 211–220 (1972). https://doi.org/10.1007/BF01515969
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DOI: https://doi.org/10.1007/BF01515969