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Plant Physiology 65:751-754 (1980)
© 1980 American Society of Plant Biologists

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Articles

On the Quenching of the Fluorescence Yield in Photosynthetic Systems 1,2

Rienk van Grondelle and Louis N. Duysens

Department of Biophysics of the State University, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Huygens Laboratory of the State University, P.O. Box 9504, 2300 RA Leiden, The Netherlands

A modified matrix model describing transfer of excitation energy in the photosynthetic pigment system is discussed. In addition to the antenna pigments and reaction centers of the simple matrix model, a coupling complex is postulated mediating energy transfer between antenna and reaction centers. The values of the parameters describing the transfer properties of the coupling complex can be chosen in such a way that a number of recent unexplained measurements of fluorescence properties of various purple bacteria can be described. If such coupling complexes are present in oxygen evolving organisms, some of their properties must be different from those of purple bacteria.

1 Financial support for this work was given by the Dutch Foundation for Biophysics, financed by the Netherlands Organization for the Advancement of Pure Research (ZWO), and by the European Economic Community Solar Energy Programme, section D (Contract No. 027-76-ESN).

2 This publication is dedicated to the memory of Bessel Kok, an excellent scientist and good friend.






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Copyright © 1980 by the American Society of Plant Biologists