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    Effects of Melatonin on Growth, Physiology and Gene Expression in Rice Seedlings Under Cadmium Stress

    Xiachen Lv1,#, Yunxia Fang1,#, Lantian Zhang1, Weiyi Zhang1, Ling Xu1, Jingjin Han1, Bailing Jin2, Xian Zhang1, Xiaoqin Zhang1,*, Dawei Xue1,*

    Phyton-International Journal of Experimental Botany, Vol.88, No.2, pp. 91-100, 2019, DOI:10.32604/phyton.2019.06622

    Abstract Melatonin (MLT) is a hormonal substance found in many organisms and can improve plant stress resistance. In this study, the japonica rice variety Y32 and indica rice variety NJ6 were cultivated in hydroponics under different concentrations of CdCl2 at the two-leaf stage. The growth, physiological and biochemical responses of the seedlings and the expression of cadmium (Cd)-related genes under exogenous melatonin (MLT) treatment were assessed. The results indicated that Cd stress destroyed the dynamic balance between reactive oxygen species (ROS) production and removal, resulting in ROS accumulation, membrane lipid peroxidation, and impaired growth and development. Following the application of exogenous… More >

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