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. 1978 Dec;62(6):879–884. doi: 10.1104/pp.62.6.879

Studies on Cation-induced Thylakoid Membrane Stacking, Fluorescence Yield, and Photochemical Efficiency 1

Robert Charles Jennings 1, Giorgio Forti 1, Paolo Domenico Gerola 1, Flavio Massimo Garlaschi 1
PMCID: PMC1092246  PMID: 16660630

Abstract

Trypsin digestion of photosynthetic membranes isolated from spinach (Spinacia oleracea L.) leaves eliminates the cation stimulation of chlorophyll fluorescence. High concentrations of cations protect the fluorescence yield against trypsin digestion, and the cation specificity for this protection closely resembles that required for the stimulation of fluorescence by cations. Trypsin digestion reverses cation-induced thylakoid stacking, and the time course of this effect seems to parallel that of the reversal of cation fluorescence. High concentrations of cations protect thylakoid stacking and cation-stimulated fluorescence alike. The cation stimulation of photosytem II photochemistry remains intact after trypsinization has reversed both cation-induced thylakoid stacking and fluorescence yield. It is concluded that cation-stimulated fluorescence yield, and not the cation stimulation of photosystem II photochemistry, is associated with thylakoid membrane stacking.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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