Inductive and synergistic interactions between plant allelochemical flavone and Bt toxin Cry1 Ac in Helicoverpa armigera

作     者：Shan Wang Min Zhang Jinyong Huang Leyao Li Kaiyuan Huang Yuting Zhang Yalu Li Zhongyuan Deng Xinzhi Ni Xianchun Li Shan Wang;Min Zhang;Jinyong Huang;Leyao Li;Kaiyuan Huang;Yuting Zhang;Yalu Li;Zhongyuan Deng;Xinzhi Ni;Xianchun Li

作者机构：School of Agricultural SciencesZhengzhou UniversityZhengzhouChina School of Life SciencesZhengzhou UniversityZhengzhouChina USDA-ARSCrop Genetics and Breeding Research UnitUniversity of Georgia-Tifton CampusTiftonGAUSA Department of Entomology and BI05 InstituteUniversity of ArizonaTucsonAZUSA 

出 版 物：《Insect Science》 (昆虫科学（英文版）)

年 卷 期：2021年第28卷第6期

页      面：1756-1765页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 

基　　金：supported by the USDA National Institute of Food and Agriculture Hatch Project(No.ARZT-1370680-R31-172) National Science Foundation of China(NSFC)-Henan Joint major grant(No.U2004206) Key Scientific Research Projects of Colleges and Universities in Henan Province(No.21A210027) State Key Laboratory of Cotton Biology Open Fund(No.CB2020A06) 

主　　题：allelochemicals Bt crops combination toxicity induced toxicity resistance toxicological interactions 

摘      要：Genetically engineered crops simultaneously produce defensive allelochemi-cals and Bacillus thuringiensis(Bt)toxin proteins to kill some of the world s most devastating insect *** the two types of toxins,when ingested sequentially or simultaneously,interact at both lethal and sublethal doses in these pests remains ***,we examined the toxicological interactions between the Bt toxin Cry 1 Ac and the flavonoid allelochemical flavone in Helicoverpa *** exposure of *** neonates to lethal doses(LC25)of Cry 1 Ac and flavone caused a mortality significantly higher than that of either toxin alone and their expected additive *** for 24 h to a sublethal dose(LC10)of Cry 1 Ac followed by 6-d simultaneous exposure to the same dose of Cry 1 Ac plus a lethal dose(1.6 mg/g diets,LC50)of flavone resulted in a mortality significantly higher than that of the LC50 dose of flavone alone and the expected additive mortality of the LC50 dose of flavone plus the LC10 dose of Cry 1 ***-day preexposure to the sublethal dose(LC10)of flavone followed by 6-d simultaneous exposure to the LC50 dose(6 ng/cm2)of Cry 1 Ac plus the LC25 dose of flavone yielded a mortality significantly higher than that of the LC50 dose of Cry 1 Ac but similar to the expected additive mortality of the LC50 dose of Cry 1 Ac plus the LC50 dose of *** results suggest that Cry 1 Ac induces and synergizes the toxicity of flavone against *** larvae.