Regulation of electron-transport pathways in cells of Chlamydomonas reinhardtii under stress conditions

Regulation of electron-transport pathways in cells of Chlamydomonas reinhardtii under stress... The kinetics of interactions between electron-transport pathways in the thylakoid membrane was examined. A mathematical model was proposed to describe the kinetics of redox transitions in photosystem II, proton concentration changes in the chloroplast stroma, and the plastoquinone pool reduction due to photosynthetic and chlororespiratory pathways. A kinetic mechanism is considered that redirects electron flows between photosynthetic and chlororespiratory pathways in response to the increased NADPH content under mineral deficiency. According to the simulation model, the electron transport flows via different routes are switched over in a stepwise manner. The results of numerical simulations are qualitatively consistent with experimental data for Chlamydomonas reinhardtii cells subjected to mineral deprivation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Regulation of electron-transport pathways in cells of Chlamydomonas reinhardtii under stress conditions

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2013 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443713040110
Publisher site
See Article on Publisher Site

Abstract

The kinetics of interactions between electron-transport pathways in the thylakoid membrane was examined. A mathematical model was proposed to describe the kinetics of redox transitions in photosystem II, proton concentration changes in the chloroplast stroma, and the plastoquinone pool reduction due to photosynthetic and chlororespiratory pathways. A kinetic mechanism is considered that redirects electron flows between photosynthetic and chlororespiratory pathways in response to the increased NADPH content under mineral deficiency. According to the simulation model, the electron transport flows via different routes are switched over in a stepwise manner. The results of numerical simulations are qualitatively consistent with experimental data for Chlamydomonas reinhardtii cells subjected to mineral deprivation.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Jun 18, 2013

References

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