Studies on the induction of chlorophyll fluorescence in barley protoplasts. II. Resolution of fluorescence quenching by redox state and the transthylakoid pH gradient

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Abstract

During the chlorophyll fluorescence oscillation described in barley protoplasts (Quick & Horton, Proc. R. Soc. Lond . B 220, 361-370, 1984) the components which contribute to quenching have been quantified. Quenching due to oxidized Q ( q Q ) was measured either by DCMU addition or by light doubling and indicated an oscillation in the redox state of Q which was antiparallel to the rate of oxygen evolution but was approximately 15 s out of phase at a variety of light intensities and temperatures. An oscillation in the extent of energy-dependent quenching, q e , was observed in strong but not weak light. These results are discussed in terms of the mechanism of the changes in energy and redox states that can contribute additively but in differing proportions to the fluorescence oscillation.

Publisher

The Royal Society

Subject

General Medicine

Reference20 articles.

1. Chloroplast protein phosphorylation couples plastoquinone redox state to the distribution of excitation energy between photosystems Nature;Allen J. F.;Land.,1981

2. Analysis of the slow phases of the in vivo chlorophyll fluorescence induction curve. Changes in the redox state of photosystem II electron acceptors and fluorescence emission from photosystems I and II. Biochim. biophys;Bradbury M.;Acta,1981

3. Kinetic models for the electron donors of photosystem II of photosynthesis. Biochim. biophys;Bouges-Bocquet B.;Acta,1981

4. A quantitative study of the slow decline of chlorophyll a fluorescence in isolated chloroplasts Biochim. biophys;Briantais J.-M.;Acta,1979

5. Critchley C. 1981 The mechanisms of photoinhibition in higher plants. Proceedings of the 5th International Congress on Photosynthesis 7-13 September 1980. Kassandra-Halkidiki Greece (ed. G. Akoyunoglou) vol. 6 pp. 297-305. Philadelphia: Balaban International Science Services.

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