文献类型： 外文期刊

作者： Ma, Xiao-Mu ¹ ; Liu, Xiao-Xia ¹ ; Ning, Xia ¹ ; Zhang, Bo ¹ ; Han, Fei ¹ ; Guan, Xiu-Min ¹ ; Tan, Yun-Feng ² ; Zhang, Qin ¹ ;

作者机构： 1.China Agr Univ, Dept Entomol, Coll Agron & Biotechnol, Beijing 100094, Peoples R China

2.Jilin Acad Agr Sci, Gongzhuling 136100, Jilin, Peoples R China

关键词： Bacillus thuringiensis;Ostrinia furnacalis;Beauveria bassiana;Cry1Ac;interaction;resistance;cotton

期刊名称：JOURNAL OF INVERTEBRATE PATHOLOGY （ 影响因子：2.841； 五年影响因子：3.368 ）

ISSN： 0022-2011

年卷期： 2008 年 99 卷 2 期

页码：

收录情况： SCI

摘要： In this study, interactions between Cry1Ac, a toxic crystal protein produced by Bacillus thuringiensis (Berliner), and Beauveria bassiana on the mortality and survival of Ostrinia furnacalis was evaluated in the laboratory. The results showed that Cry1Ac is toxic to O. furnacalis. Not only were larval growth and development delayed, but Pupation, pupal weight and adult emergency also decreased when larvae were fed on artificial diet containing purified Cry1Ac toxin. When third instars O. furnacalis were exposed to combination of B. bassiana (1.8 x 10(5), 1.8 x 10(6) or 1.8 x 10(7) conidia ml(-1)) and Cry1Ac, (0.2 or 0.8 mu g g(-1)), the effect on mortality was additive, however, the combinations of sublethal concentrations showed 105 antagonism between Cry1Ac (3.2 or 13 mu g g(-1)) and B. bassiana (1.8 x or 1.8 x 106 conidia ml(-1)). When neonates were reared on sublethal concentrations of Cry1AC until the third instar, and survivors exposed B. bassiana conidial suspension, Such treatments showed additive effect on mortality of O. furnacalis except for the combination of Cry1Ac (0.2 mu g g(-1)) and B. bassiana (1.8 x 10(6) conidia ml(-1)) that showed antagonism. (c) 2008 Elsevier Inc. All rights reserved.