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《Journal of Shenyang Normal University(Natural Science Edition)》 2015-03
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Influence of PEG pretreatment on antioxidant enzyme activities of rice seedling to subsequent Cd stress

ZHANG Shiwan;MEI Yingxue;WEI wei;SUN Dongwan;SU Xin;WANG Qian;MA Lianju;College of Chemistry and Life Science,Shenyang Normal University;  
Effects of PEG pretreatment were studied on rice seedling growth and antioxidative activities of rice seedling stressed by Cd.The result indicated that Cd treatment reduced rice seedling's height compared to the control,but the PEG pretreatment increased the rice seedling's height compared to the Cd treatment.With the prolong of Cd treatment time,MDA content of the rice seedling leaves increased significantly,but PEG pretreatment reduced MDA content.Cd treatment also reduced the activities of SOD,POD and CAT and APX of the rice seedling leaves.Under PEG pretreatment,the activities of SOD,POD and CAT and APX of the rice seedling leaves were significantly increased in comparison with that of Cd treatment.PEG pretreatment induced rice seedlings cross adaptation on the subsequent Cd stress and alleviated the Cd stress on rice seedlings.
【Fund】: 国家自然科学基金资助项目(31270369);; 沈阳师范大学主任基金资助项目(EERC-K-201406);; 沈阳师范大学“大学生创新创业训练计划”项目
【CateGory Index】: S511;Q945.78
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