Different Responses of Plant Growth and Antioxidant System to the Combination of Cadmium and Heat Stress in Transgenic and Non-transgenic Rice

作     者：Feng-Yun Zhao Wen Liu Shi-Yong Zhang 

作者机构：College of Life Sciences Shandong University of Technology Zibo 255049 China Institute of Rice Jining 272077 China 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2009年第51卷第10期

页      面：942-950页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Supported by the National Natural Science Foundation of China (30671126) 

主　　题：ascorbate-glutathione cycle catalase combined cadmium and heat stress glutathione-S-transferase transgenic rice 

摘      要：A comparative study of just cadmium （Cd） or heat and their combination treatments on some physiological parameters and the antioxidant systems in transgenic rice （Oryza sativa L. cv. Zhonghua No.11） carrying glutathione-S-transferase （GST, EC. 2.***.1.18） and catalasel （CAT1, EC. 1.***.1.6） and non-transgenics was conducted. The results revealed improved resistance in the transgenics to Cd and the combined Cd and heat stress than non-transgenics. Data showed that the activities of CAT, GST, superoxide dismutase （EC.1.***.1.1） and all components of the ascorbate-glutatbione cycle measured in the stressed transgenics shoots are significantly different from those of non-transgenics. Results indicated that co-expression of GST and CAT1 had an important effect on the antioxidant system, in particular, the whole ascorbate-glutathione cycle. The less oxidative damage induced by Cd and the stress combination in the transgenics resulted not only from the GST and CAT1 transgene but also from the coordination of the whole ascorbate-glutathione cycle.