Effects of straw leachates from Cry1C-expressing transgenic rice on the development and reproduction of Daphnia magna
文献类型： 外文期刊
作者： Chen, Yi 2 ; Gao, Yanjie 1 ; Zhu, Haojun 1 ; Romeis, Jorg 1 ; Li, Yunhe 1 ; Peng, Yufa 1 ; Chen, Xiuping 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
2.Agroscope, Res Devis Agroecol & Environm, CH-8046 Zurich, Switzerland
3.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Gennplasm Resource, Minist Agr, Wuxi 214081, Peoples R China
关键词： Bt protein; Environmental risk assessment; Non-target effects; Daphnia magna; Chronic toxicity; Catalase
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 165 卷
页码：
收录情况： SCI
摘要： The transgenic rice line T1C-19 provides high resistance to lepidopteran pests because of the synthesis of the Bacillus thuringiensis (Bt) insecticidal protein Cry1C. It thus shows good prospect for commercial planting in China. Species of Cladocera, an order of aquatic arthropods commonly found in aquatic ecosystems such as rice paddies, might be exposed to the insecticidal protein released from Bt-transgenic rice-straw residues. For the study reported herein, we used Daphnia magna (water flea) as a representative of Cladocera to evaluate whether aquatic arthropods are adversely affected when exposed to Bt rice-straw leachates. We exposed D. magna to M4 medium containing various volume percentages of medium that had been incubated with TIC -19 rice straw or rice straw from its non-transformed near-isoline Minghui 63 (MH63) for 21 days. Compared with pure M4 medium (control), the fitness and developmental and reproduction parameters of D. magna decreased significantly when exposed to rice-straw leachates; conversely, no significant differences between the T1C-19 and MH63 rice-straw leachate treatments were observed, indicating that the Bt rice straw leachate did not adversely affect this non-target species.
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