Abstract
The presence of the respiration component non-coupled to energy accumulation (which can also be defined as free oxidation) is a common property of the plant mitochondrial electron transport chain. The physiological significance of the noncoupled respiration is still discussed. Besides their role in thermogenesis of flowering plants, free oxidation processes can regulate the reduction level of electron transport chain components thus decreasing the rate reactive oxygen species formation. On the other hand, reactive oxygen species can play an important role as signals inducing plant alternative oxidase and rotenone-insensitive NADH and NADPH dehydrogenases. It is proposed that the induction of noncoupled pathways of electron transport due to reactive oxygen species overproduction represents an important feedback loop that constitutes a universal mechanism of plant resistance to stress.
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Popov, V.N. (2015). Feedback Loop of Non-coupled Respiration and Reactive Oxygen Species Production in Plant Mitochondria. In: Gupta, K., Igamberdiev, A. (eds) Reactive Oxygen and Nitrogen Species Signaling and Communication in Plants. Signaling and Communication in Plants, vol 23. Springer, Cham. https://doi.org/10.1007/978-3-319-10079-1_5
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DOI: https://doi.org/10.1007/978-3-319-10079-1_5
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