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Toxicological And Biochemical Analyses Demonstrate T.he Absence Of Lethal O r Sublethal Effects Of Cry1C- Or Cry2A-Expressing Bt Rice On The Collembolan Folsomia Candida

文献类型： 外文期刊

作者： Li, Yunhe;Peng, Yufa;Romeis, Jorg;Romeis, Jorg;Zhang, Bing;Yang, Yan;Yang, Yan;Zhou, Xiang;Zhang, Bing

作者机构：

关键词： Bt rice pollen; Bt rice leaf; environmental risk assessment; ELISA; non-target effects; enzyme activity

期刊名称： FRONTIERS IN PLANT SCIENCE

ISSN： 1664-462X

年卷期： 2018 年 9 卷

页码：

收录情况： JCR（2021版）

摘要： Assessing the potential effects of insect-resistant genetically engineered (GE) plants on collembolans is important because these common soil arthropods may be exposed to insecticidal proteins produced in GE plants by ingestion of plant residues, crop pollen, or root exudates. Laboratory studies were conducted to evaluate the potential effects of two Bacillus thuringiensis (Bt)-rice lines expressing Cry1C and Cry2A in pollen and leaves and of their non-Bt conventional isolines on the fitness of the collembolan Folsomia candida and on the activities of its antioxidant-related enzymes, superoxide dismutase and peroxidase, and of its detoxification-related enzymes, glutathione reductase and glutathione S-transferase. Survival, development, reproduction, and the intrinsic rate of increase (r(m)) were not significantly reduced when F. candida fed on the Bt rice pollen or leaf powder than on the non-Bt rice materials; these parameters, however, were significantly reduced when F. candida fed on non-Bt rice pollen or non-Bt leaf-based diets containing the protease inhibitor E-64 at 75 mu g/g. The activities of the antioxidant-related and detoxification-related enzymes in F. candida were not significantly affected when F. candida fed on the Bt rice materials, but were significantly increased when F. candida fed on the non-Bt rice materials containing E-64. The results demonstrate that Cry1C and Cry2A are not toxic to F. candida, and also indicate the absence of unintended effects on the collembolan caused by any change in plant tissue nutritional composition due to foreign gene transformation.

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