摘要
商业化的转Bt基因作物获准在田间大面积种植 ,使其释放的Bt毒蛋白对土壤生态系统的生态风险性问题成为人们关注的焦点 .本文综述了转Bt抗虫作物以植株残体、根系分泌物、花粉等形式释放的Bt毒蛋白通过田间耕作等方式进入土壤后的一些安全性问题 ,包括土壤活性颗粒对Bt毒蛋白的吸附作用 ,Bt毒蛋白在土壤中的杀虫活性、存留 。
Commercialized transgenic Bt (Bacillus thuringiensis) crops are permitted for field growth in a large scale, which leads to significant issues of ecological risk assessment in soil ecosystem. In this paper, some general safety problems involving in the soil Bt active toxins released from insect-resistant transgenic Bt crops in the forms of plant residues, root exudates and pollens were reviewed, including their adsorption by soil active-particles, their insecticidal activity, persistence, and biodegradation by soil microbes, and their effects on soil organisms.
出处
《应用生态学报》
CAS
CSCD
2003年第11期2062-2066,共5页
Chinese Journal of Applied Ecology
基金
国家自然科学基金资助项目 (3 0 0 70 5 0 0 )
关键词
BT毒蛋白
杀虫活性
存留
生物降解
土壤生物
Bt toxin proteins, Insecticidal activity, Persistence, Biodegradation, Soil organisms
