转cry1C,cry2A基因水稻对稻田浮游动物群落物种多样性的影响

发布时间：2018-01-21 20:46

本文关键词： 转基因水稻浮游动物物种多样性安全评价　出处：《中国生物防治学报》2017年04期 　论文类型：期刊论文

【摘要】：转Bt基因水稻的非靶标效应一直以来都是人们关注的重点,为了解转Bt基因水稻对稻田浮游动物群落的安全性,本文以转cry1C基因水稻(T1C-19)、转cry2A基因水稻(T2A-1)及其非转基因亲本水稻明恢63(MH63)为材料,以浮游动物的种类和群落多样性为指标,研究并分析了转Bt基因水稻对稻田浮游动物群落物种多样性的影响。结果显示,水稻不同生长时期里稻田中浮游动物种类变化不明显,数量变化明显,Shannon-Wiener物种多样性指数和均匀性指数在拔节期达到最大值。另外由于孕穗期不得不施用农药防治蝗虫,导致孕穗期浮游动物的数量及物种多样性显著降低,并且在使用农药后,多样性指数和均匀性指数随着水稻的生长逐渐下降。但转Bt基因水稻对浮游动物种类和数量及群落物种多样性与对照非转基因水稻相比均无显著性差异。与施用农药对水体带来的负面影响相比,转Bt基因水稻对水体环境无负面影响。
[Abstract]:Non-target effect of BT transgenic rice has been the focus of attention. In order to understand the safety of BT transgenic rice to zooplankton communities in paddy fields. In this paper, cry1C transgenic rice T1C-19, cry2A transgenic rice T2A-1) and its non-transgenic parent Minghui 63 (MH63) were used as materials. The effects of BT transgenic rice on species diversity of zooplankton communities in paddy fields were studied and analyzed based on species and community diversity of zooplankton. The variety of zooplankton species in rice field was not obvious, but the number of zooplankton changed obviously in different growing stages of rice. The species diversity index and uniformity index of Shannon-Wiener reached the maximum at jointing stage. In addition, pesticides had to be applied to control locusts at booting stage. As a result, the number and species diversity of zooplankton in booting stage were significantly reduced, and after the use of pesticides. The diversity index and evenness index decreased gradually with the growth of rice, but the species diversity of zooplankton and community of BT transgenic rice were not significantly different from those of control non-transgenic rice. The adverse effects of pesticides on water were compared. Transgenic BT rice had no negative effect on water environment.
【作者单位】：中国农业科学院植物保护研究所/植物病虫害生物学国家重点实验室;扬州大学动物科学与技术学院;
【基金】：国家转基因生物新品种培育科技重大专项(2016ZX08011-001)
【分类号】：S511
【正文快照】： 转基因抗虫作物能够有效的控制害虫为害,从而降低化学农药的使用、提高农民的收入、减少环境污染,同时解决农药残留等问题,因此会带来巨大的环境和经济效益[1],但其对生态环境的潜在风险仍需深入的研究。转基因抗虫作物的环境风险问题主要包括入侵化和杂草化、基因漂移、非靶

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