铁杉科
寄主(生物学)
昆虫学
昆虫
仙人掌
弗拉斯
幼虫
昆虫不育技术
作者
Daifeng Cheng,Zijun Guo,Markus Riegler,Zhiyong Xi,Guangwen Liang,Yijuan Xu
出处
期刊:Microbiome
[Springer Nature]
日期:2017-02-01
卷期号:5 (1): 13-13
被引量:150
标识
DOI:10.1186/s40168-017-0236-z
摘要
Symbiotic bacteria affect insect physiology and ecology. They may also mediate insecticide resistance within their hosts and thereby impact pest and vector control practices. Here, we document a novel mechanism of insecticide resistance in which a gut symbiont of the tephritid pest fruit fly Bactrocera dorsalis enhances resistance to the organophosphate insecticide trichlorphon. We demonstrated that the gut symbiont Citrobacter sp. (CF-BD) plays a key role in the degradation of trichlorphon. Based on a comparative genomics analysis with other Citrobacter species, phosphatase hydrolase genes were identified in CF-BD. These CF-BD genes had higher expression when trichlorphon was present. Bactrocera dorsalis inoculated with isolated CF-BD obtained higher trichlorphon resistance, while antibiotic-treated flies were less resistant confirming the key role of CF-BD in insecticide resistance. Our findings suggest that symbiont-mediated insecticide resistance can readily develop in B. dorsalis and may represent a more widely relevant insecticide resistance mechanism than previously recognized.
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