Abstract
Transfer efficiencies between phycobilisomes and photosystem II antenna chlorophylls were determined on membrane fragments isolated from low and high light adapted Anabaena cells. The observed increase in energy transfer in high light adapted cells is a consequence of shorter interchromophore distances and a decrease in the number of jumps of the exciting photons. Calculation of the rates of energy transfer and the coupling energies indicate that the weak interaction inferred for energy transfer between phycobilisome and photosystem II in low light adapted cells is replaced by an intermediate interaction in high light adapted cells.
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Abbreviations
- LLA:
-
low light adapted
- HLA:
-
high light adapted
- PBS:
-
phycobilisome
- PS:
-
photosystem
References
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Kaiseva, E., Zimányi, L. & Laczkó, I. Effect of adaptation to high light intensity on the kinetics of energy transfer from phycobilisomes to photosystem II in Anabaena cylindrica . Eur Biophys J 16, 275–278 (1988). https://doi.org/10.1007/BF00254063
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DOI: https://doi.org/10.1007/BF00254063