PMID: 156555Jun 5, 1979

Properties of ATP-induced chlorophyll luminescence in chloroplasts

Biochimica Et Biophysica Acta
M AVRON, U Schreiber

Abstract

1. The recently described reaction of ATP-induced luminescence is analyzed for its relation to other ATP-induced reactions such as ATP-driven transmembrane proton gradient formation and ATP-driven reverse electron flow. 2. In the absence of phenazine methosulfate ATP-induced luminescence is optimal while the main phase of ATP-driven reverse electron flow is eliminated. 3. DCMU which by itself causes a much smaller luminescence, inhibits the ATP-induced luminescence. 4. Nigericin plus valinomycin, but not each by itself, fully inhibit the ATP-induced luminescence. 5. The observations are interpreted as indicating that ATP stimulates luminescence by a 2-fold mechanism: (a) increasing the amount of the reducing primary electron acceptor of Photosystem II, Q, and (b) creating a transmembrane electrochemical potential which serves to decrease the activation energy required for the charge recombination reaction which leads to luminescence.

Citations

Jan 1, 1986·Photosynthesis Research·Y Shahak, M AVRON
May 13, 2008·Journal of Photochemistry and Photobiology. B, Biology·Maja Berden-ZrimecMarina Monti
Jun 5, 1979·Biochimica Et Biophysica Acta·U Schreiber, M AVRON
Jun 15, 2007·Environmental Science and Pollution Research International·Jaka RazingerJasna Dolenc Koce

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