Citronellal perception and transmission by Anopheles gambiae s.s. (Diptera: Culicidae) females
文献类型： 外文期刊
作者： Wu, Weijian 1 ; Li, Shanshan 1 ; Yang, Min 1 ; Lin, Yongwen 1 ; Zheng, Kaibin 1 ; Akutse, Komivi Senyo 3 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Subtrop Agr, Zhangzhou 363001, Peoples R China
2.Zhangzhou Inst Technol, Zhangzhou 363001, Peoples R China
3.Int Ctr Insect Physiol & Ecol, POB 30772-00100, Nairobi, Kenya
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2020 年 10 卷 1 期
页码：
收录情况： SCI
摘要： Anopheles gambiae s.s. is a key vector of Plasmodium parasites. Repellents, which may be a promising alternative to pesticides used to control malaria mosquitoes. Although citronellal is a known mosquito repellent, its repellency characteristics are largely unknown. Determining the specific odorant-binding proteins (OBPs) and odorant receptors (ORs) that detect and transfer the citronellal molecule in A. gambiae s.s. will help to define the mode of action of this compound. In this research, we assessed the repellent activity of citronellal in A. gambiae s.s. using a Y-tube olfactory meter, screened candidate citronellal-binding OBPs and ORs using reverse molecular docking, clarified the binding properties of predicted proteins for citronellal using fluorescence competition binding assay. Results showed that citronellal had a dosage effect on repelling A. gambiae s.s.. The 50% repellent rate was determined to be 4.02 nmol. Results of simulated molecular docking showed that the only proteins that bound tightly with citronellal were AgamOBP4 and AgamORC7. Fluorescence competitive binding assays confirmed the simulations. This research determined that citronellal was captured by AgamOBP4 and transmitted to AgamORC7 in A. gambiae s.s.. Our study will be beneficial in the further understanding the repellent mechanism of citronellal against A. gambiae s.s..
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