Field evaluation of effects of transgenic cry1Ab/cry1Ac, cry1C and cry2A rice on Cnaphalocrocis medinalis and its arthropod predators
Field evaluation of effects of transgenic cry1Ab/cry1Ac, cry1C and cry2A rice on Cnaphalocrocis medinalis and its arthropod predators
复制标题
DOI：
10.1007/s11427-011-4234-2
复制
发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
Xueliang Xu;Yu Han;Gang Wu;W. Cai;Benqi Yuan;Hui Wang;Fangzhou Liu;Manqun Wang;H. Hua
中科院分区：
文献类型：
--
作者：
Xueliang Xu;Yu Han;Gang Wu;W. Cai;Benqi Yuan;Hui Wang;Fangzhou Liu;Manqun Wang;H. Hua
转基因Btrice对目标害虫及其捕食者的影响需要在Btrice商业化之前澄清。本研究在连续两个生长季中，对三个转基因水稻品系和非转基因亲本水稻品系的稻纵卷叶螟叶片的折叶率进行了研究。此外，还对该虫的种群密度、相对多度和种群动态进行了研究。在中国的3个地点调查了Medinalisand4种天敌。结果表明，水稻品系对稻曲叶螟的群体密度和叶片折叠率有显著影响。medinalislarvae。在大多数取样日期，非转基因水稻的叶片折叠率显著高于转基因水稻。C. medinalislarvae和C.在整个研究期间，在非转基因水稻上发现了噬菌体内的medinalisinphytophages，并与三种转基因水稻在不同地点进行了比较。种群动态研究表明，C.稻株、稻株×采样期、稻株×年份、稻株×采样期×年份对稻纵卷叶螟幼虫的影响显著。然而，有很少，如果有的话，显着差异的相对丰度，种群密度和种群动态的四个节肢动物捕食者之间的三个Btrice线和非转基因水稻。本研究结果表明，转基因Bt毒蛋白能有效地抑制C.对4种捕食性节肢动物的发生无显著影响。
The impacts of transgenicBtrice on target pests and their predators need to be clarified prior to the commercialization ofBtrice. In this study, the percentages of folded leaves of three transgenicBtrice lines and non-transgenic parental rice line caused byCnaphalocrocis medinaliswere studied over two successive growing seasons. In addition, the population densities, relative abundance and population dynamics ofC. medinalisand four species of its natural arthropod predators were investigated at three sites in China. The results showed that rice line significantly affected the percentages of folded leaves and population densities ofC. medinalislarvae. Significantly higher percentages of folded leaves were observed on the non-transgenic rice compared with the three transgenicBtrice on most sampling dates. Significantly higher densities ofC. medinalislarvae and higher relative abundance ofC. medinaliswithin phytophages were found on non-transgenic rice compared with three transgenicBtrice at different sites across the study period. The population dynamics ofC. medinalislarvae were significantly affected by rice line, rice line×sampling date, rice line×year, rice line×sampling date×year. However, there was little, if any, significant difference in the relative abundance, population density and population dynamics of the four arthropod predators between the threeBtrice lines and non-transgenic rice. The results of this study indicate that theBttoxin in transgenicBtrice can effectively suppress the occurrence ofC. medinalis, but has no significant effects on the occurrence of the four predatory arthropod species.