Regulation of the speed of electron transfer in photosynthetic membranes of higher plants

A. B. Ryzhikov; A. N. Tikhonov

Regulation of the speed of electron transfer in photosynthetic membranes of higher plants

Research output: Contribution to journal › Article › peer-review

Abstract

The e.s.r. method has been used to investigate the kinetics of photo-induced redox conversions of the P700 reaction centres of photosystem I in the leaves of higher plants. It is shown that the non-monotonic kinetics of the redox conversions of P700 appearing on continuous illumination with white light of leaves adopted to the dark and far red light is due to acceleration of the efflux of electrons from photosystem I. From the results it is assumed that this acceleration is due to increase in the concentration of the acceptors of photosystem I-NADP⁺. It is shown that in the experimental conditions electron transport between photosystems is not inhibited.

Original language	English
Pages (from-to)	689-694
Number of pages	6
Journal	Biophysics
Volume	33
Issue number	4
Publication status	Published - Dec 1 1988
Externally published	Yes

ASJC Scopus subject areas

Biophysics

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abstract = "The e.s.r. method has been used to investigate the kinetics of photo-induced redox conversions of the P700 reaction centres of photosystem I in the leaves of higher plants. It is shown that the non-monotonic kinetics of the redox conversions of P700 appearing on continuous illumination with white light of leaves adopted to the dark and far red light is due to acceleration of the efflux of electrons from photosystem I. From the results it is assumed that this acceleration is due to increase in the concentration of the acceptors of photosystem I-NADP+. It is shown that in the experimental conditions electron transport between photosystems is not inhibited.",

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AU - Tikhonov, A. N.

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N2 - The e.s.r. method has been used to investigate the kinetics of photo-induced redox conversions of the P700 reaction centres of photosystem I in the leaves of higher plants. It is shown that the non-monotonic kinetics of the redox conversions of P700 appearing on continuous illumination with white light of leaves adopted to the dark and far red light is due to acceleration of the efflux of electrons from photosystem I. From the results it is assumed that this acceleration is due to increase in the concentration of the acceptors of photosystem I-NADP+. It is shown that in the experimental conditions electron transport between photosystems is not inhibited.

AB - The e.s.r. method has been used to investigate the kinetics of photo-induced redox conversions of the P700 reaction centres of photosystem I in the leaves of higher plants. It is shown that the non-monotonic kinetics of the redox conversions of P700 appearing on continuous illumination with white light of leaves adopted to the dark and far red light is due to acceleration of the efflux of electrons from photosystem I. From the results it is assumed that this acceleration is due to increase in the concentration of the acceptors of photosystem I-NADP+. It is shown that in the experimental conditions electron transport between photosystems is not inhibited.

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