relationship between ROS and MG detoxification system

11
Glyoxalase System and Reactive Oxygen
Species Detoxification System in
Plant Abiotic Stress Response and Tolerance:
An Intimate Relationship
Mohammad Anwar Hossain1,2, Jaime A. Teixeira da Silva1 and Masayuki Fujita1

1Laboratory

of Plant Stress Responses, Department of Applied Biological Science,
Faculty of Agriculture, Kagawa University
2Department of Genetics & Plant Breeding, Bangladesh Agricultural University
1Japan
2Bangladesh

1. Introduction
Plants are sessile and sensitive organisms that inevitably encounter a variety of abiotic stresses in nature. Abiotic stresses such as salinity, drought, heavy metal toxicity and extreme temperatures are critical factors that reduce crop yields by more than 50% worldwide (Wang et al., 2003). The scenario is even more aggravated by the predicted forthcoming global changes in climate, foreseen extremization of environmental conditions, continuous increase of world population, ever-increasing deterioration of arable land, and scarcity of fresh water, all underscoring the importance of developing stress-resistant crops that are able to sustain growth and productivity in stressful environments. Plants tolerate abiotic stresses by modulating multiple genes and by coordinating the action of various genes from different pathways or systems (Sasaki-Sekimoto et al., 2005; Ahuja et al., 2010).
During the past few years, the complex interrelationship of biochemical pathways that changes during stress has become appreciated, although we are far from understanding this complexity. A thorough understanding of biochemical and molecular responses of plants to various abiotic stresses and the interaction of different molecular pathways is, therefore, essential for a holistic perception of plant resistance mechanisms under stressful conditions.
The regulatory roles of the glyoxalase system and reactive oxygen species (ROS) detoxification systems in plant abiotic stress tolerance have increasingly

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