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Methylglyoxal and Glyoxalase System in Plants: Old Players, New Concepts

Research paper by Zhong-;Guang Li

Indexed on: 13 Aug '16Published on: 02 May '16Published in: The Botanical review; interpreting botanical progress



Abstract

Abstract Methylglyoxal (MG), a reactive α, β-dicarbonyl ketoaldehyde, is unavoidable by-product of several metabolic pathways, it has long been considered as cytotoxin at high concentration, but now is emerging signal molecule function at low concentration in plants. Thus, MG homeostasis in plant cells is very important to exert its physiological function. Glyoxalase system, mainly including glyoxalase I and glyoxalase II, is the major regulator of MG homeostasis in plants. Recent years, research on MG and its detoxification system glyoxalase has attracted much attention in plant biology. Based on the current progress on MG and glyoxalase system, in this review, MG biosynthesis and degradation; determination of MG; MG as signal iniator crosstalk with Ca2+, reactive oxygen species and abscisic acid; satl, heavy metal, drought, cold and heat tolerance involved in MG and glyoxalase system; stomatal movement; seed germiantion; and cell division and organ differentiation, were summarized. Meanwhile, research direction in the future was presented.AbstractMethylglyoxal (MG), a reactive α, β-dicarbonyl ketoaldehyde, is unavoidable by-product of several metabolic pathways, it has long been considered as cytotoxin at high concentration, but now is emerging signal molecule function at low concentration in plants. Thus, MG homeostasis in plant cells is very important to exert its physiological function. Glyoxalase system, mainly including glyoxalase I and glyoxalase II, is the major regulator of MG homeostasis in plants. Recent years, research on MG and its detoxification system glyoxalase has attracted much attention in plant biology. Based on the current progress on MG and glyoxalase system, in this review, MG biosynthesis and degradation; determination of MG; MG as signal iniator crosstalk with Ca2+, reactive oxygen species and abscisic acid; satl, heavy metal, drought, cold and heat tolerance involved in MG and glyoxalase system; stomatal movement; seed germiantion; and cell division and organ differentiation, were summarized. Meanwhile, research direction in the future was presented.2+

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