Effects of antibiotics on biological activity of Cry1Ac in Bt-susceptible and Bt-resistant Helicoverpa armigera strains
文献类型: 外文期刊
作者: Khaing, Myint Myint 2 ; Yang, Xianming 1 ; Zhao, Man 1 ; Zhang, Wanna 1 ; Wang, Bingjie 1 ; Wei, Jizhen 1 ; Liang, Gem 1 ;
作者机构: 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China
2.Minist Agr, Dept Agr, Cotton Res & Tech Dev Farm Lungyaw, Kyaukse, Myanmar
关键词: Cotton bollworm;Bacillus thuringiensis;Gut microbiota
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: 2018 年 151 卷
页码:
收录情况: SCI
摘要: In this study, the results showed that the population of midgut bacteria and larval mortality due to Cry1Ac are significantly reduced in antibiotic-treated larvae from Bt-susceptible,-resistant and field-collected strains (96S, BtR, FS respectively) of Helicoverpa armigera. The percentage reduction of larval mortality with increasing concentrations of antibiotics was significantly different among strains with the smallest effect observed in FS. It has been suggested that antibiotics could influence the toxicity of Cry1Ac, possibly by eliminating gut bacteria, hence gut bacteria might be playing essential roles in Bt-induced killing of H. armigera. But elimination of midgut microflora with antibiotics had no effect on resistance level.
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