转EPSPS基因抗除草剂玉米CC-2对田间节肢动物多样性的影响

【背景】转基因手段已成为改良玉米品种的重要途径之一,具有诸多优点的转基因玉米越来越受到人们的青睐。转基因玉米带来巨大经济和社会效益的同时,其安全风险问题也引发人们广泛关注,因此有必要对转基因玉米进行生物多样性影响评价。【方法】采用直接观察法和陷阱法对种植转EPSPS基因抗除草剂玉米CC-2及其对应的非转基因对照郑58的田间节肢动物进行调查,分析其群落组成、群落结构及主要类群动态。【结果】转基因玉米CC-2无论是喷施除草剂还是不喷施除草剂处理,与其对应的非转基因对照郑58相比,田间节肢动物群落组成、群落结构,以及田间主要节肢动物类群动态均无显著差异。【结论与意义】初步认为转EPSPS基因抗除草剂玉米CC-2对节肢动物多样性无安全风险,为转EPSPS基因抗除草剂玉米的推广提供一定生态安全数据。

Impacts of transgenic herbicide-resistant maize with EPSPS gene on arthropod biodiversity in the fields

【Background】Genetic engineering has becomes a powerful tool for maize breeding. The transgenic maize has been increasing in popularity. The transgenic maize brings lots of the economic and social benefits,but people pay greater attention to the potential security issues of transgenic maize than in the past. So it is important to evaluate the impact of transgenic maize cultivation on biodiversity. 【Method】Direct observations and pitfall traps were used to investigate the arthropod in transgenic herbicide-resistant maize with EPSPS gene（ CC-2） treated with or without herbicide and non-transgenic maize（ zheng 58）. The community composition and structure and seasonal dynamics of dominant groups were also analyzed in this three treatments. 【Result】Compared with non-transgenic maize,transgenic herbicide-resistant maize with or without herbicide had no significant effects on composition and structure of arthropod community and seasonal dynamics of dominant groups. 【Conclusion and significance】These results suggest that transgenic herbicide-resistant maize（ CC-2） has no risk to diversity of arthropods. This study provides basic ecological safety data for releasing of transgenic herbicide-resistant maize with EPSPS gene.