Safety of Bacillus thuringiensis Cry1C protein for Daphnia magna based on different functional traits

文献类型： 外文期刊

第一作者： Yang, Yan

作者： Yang, Yan;Zhu, Haojun;Romeis, Jorg;Li, Yunhe;Peng, Yufa;Chen, Xiuping;Zhu, Haojun;Romeis, Jorg

作者机构：

关键词： Bt protein;Water flea;Environmental risk assessment;Aquatic organisms;Non-target effects

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2018 年 147 卷

页码：

收录情况： SCI

摘要： Cry1C is a Bacillus thuringiensis (Bt) insecticidal protein and it can be produced by transgenic rice lines developed in China. Cladocera species are common aquatic arthropods that may be exposed to insecticidal proteins produced in Bt-transgenic plants through ingestion of pollen or crop residues in water. As the cladoceran Daphnia magna plays an important role in the aquatic food chain, it is important to assess the possible effects of Bt crops to this species. To evaluate the safety of the Cry1C protein for D. magna, individuals were exposed to different concentrations of purified Cry1C protein in M4 medium for 21 days. Potassium dichromate (K(2)Cr(2)Ow(7)), a known toxicant to D. magna, was added to M4 medium as a positive control treatment, and pure M4 medium was used as a negative control. Our results show that developmental, reproductive, and biochemical parameters of D. magna were not significantly different between Cry1C and negative control treatments but were significantly inhibited by the positive control. We thus conclude that D. magna is insensitive to Cry1C.

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