Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture of China, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, 198 Shiqiao Road, Hangzhou, 310021, China.
Agroscope, 8046, Zurich, Switzerland.
Sci Rep. 2017 Aug 10;7(1):7838. doi: 10.1038/s41598-017-08173-w.
Transgenic rice producing insecticidal proteins from Bacillus thuringiensis (Bt) could help protect the plants from damage by lepidopteran pests. However, one concern is the potential of Bt rice to harm non-target natural enemies, which play a vital role in pest control. In the present study, the potential effects of Cry1C rice and Cry2A rice on different life-table parameters and population dynamics of Pseudogonatopus flavifemur, a parasitoid of rice planthoppers, were evaluated under laboratory and field condition. The exposure of P. flavifemur to plant-produced Bt proteins was also analyzed. Results indicated that direct feeding on rice plants was the main exposure pathway of P. flavifemur to the Cry1C and Cry2A proteins. No significant difference on the development, survival, longevity, fecundity, and prey consumption of P. flavifemur was detected over two generations between the Bt and non-Bt rice treatments. Furthermore, the population dynamics of P. flavifemur were not affected by Cry1C rice and Cry2A rice. In conclusion, the tested Cry1C rice and Cry2A rice do not appear to harm the parasitoid P. flavifemur.
转 Bt 基因水稻能够产生苏云金芽孢杆菌（Bt）的杀虫蛋白，有助于保护植物免受鳞翅目害虫的侵害。然而，人们担心 Bt 水稻可能会伤害非靶标自然天敌，而这些天敌在害虫控制中起着至关重要的作用。在本研究中，我们在实验室和田间条件下评估了 Cry1C 水稻和 Cry2A 水稻对稻褐飞虱寄生蜂拟澳洲赤眼蜂不同生命表参数和种群动态的潜在影响，并分析了拟澳洲赤眼蜂暴露于植物产生的 Bt 蛋白的情况。结果表明，拟澳洲赤眼蜂直接取食水稻植株是其接触 Cry1C 和 Cry2A 蛋白的主要暴露途径。在两代内，Bt 水稻和非 Bt 水稻处理之间，拟澳洲赤眼蜂的发育、存活、寿命、繁殖力和捕食量均无显著差异。此外，Cry1C 水稻和 Cry2A 水稻对拟澳洲赤眼蜂的种群动态没有影响。综上所述，试验用的 Cry1C 水稻和 Cry2A 水稻似乎不会伤害寄生蜂拟澳洲赤眼蜂。
