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Genetically modified rice Bt-Shanyou63 expressing Cry1Ab/c protein does not harm Daphnia magna
Li Zhang1, Ruqing Guo1, Zhixiang Fang1
1State Key Laboratory of Biosafety, Nanjing Institute of Environmental Sciences(NIES), Ministry of Environmental Protection of China, No 8, Jiang-wang-miao Street, Nanjing, Jiangsu 210042, China.
Abstract:
The genetically modified (GM) rice Bt-ShanYou63 (Bt-SY63) received an official biosafety certificate while its safety remained in dispute. In a lifelong study, Daphnia magna were experimentally fed a basal diet of rice flours from Bt-SY63 or its parental rice ShanYou63 (SY63) at concentrations of 0.2mg, 0.3mg, or 0.4mgC (per individual per day). Overall the survival, body size, and reproduction of the animals were comparable between Bt-SY63 and ShanYou63.. The results showed that no significant differences were observed in growth and reproduction parameters between D. magna fed GM and non-GM flour and no dose-related changes occurred in all the values. Based on the different parameters assessed, the GM rice Bt-SY63 is a safe food source for D. magna that does not differ in quality from non-GM rice.
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