Identification and functional analysis of a chemosensory protein from Bactrocera minax (Diptera: Tephritidae)

文献类型： 外文期刊

第一作者： Cui, Zhongyi

作者： Cui, Zhongyi;Zhou, Qiong;Liu, Yipeng;Wang, Guirong

作者机构：

关键词： Bactrocera minax; antennae transcriptome; chemosensory protein (CSP); fluorescence-binding assay; citral

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.462； 五年影响因子：4.688 ）

ISSN： 1526-498X

年卷期： 2022 年 78 卷 8 期

页码：

收录情况： SCI

摘要： Background Olfaction has an indispensable role in insect behavior, enabling location of suitable host plants and oviposition sites, finding mates and evasion of natural enemies. Chemosensory proteins (CSPs) function to screen external odorants and transport them to olfactory receptor neurons, thereby increasing the sensitivity of the olfactory system. At present, CSP genes have been identified in many insect species, but there are relatively few studies on the function of CSP, especially in Tephritidae. Results In this study, we sequenced and analyzed 12 transcriptomes of Bactrocera minax and identified five CSP genes. The results of polymerase chain reactions with reverse transcription showed that BminCSP3 was highly expressed only in antennae. Results from competitive binding experiments showed that BminCSP3 has good binding ability to citral compared with 23 other volatile organic compounds. The docking model with citral showed hydrogen bond formation with residues (ARG97); however, no hydrogen bonds were formed in the docking of five other ligands (furfuryl alcohol, linalool, cis-3-hexenyl acetate, (R)-(+)-limonene and (+)-carvone). Electroantennogram (EAG) analyses revealed that citral was active in B. minax at the antennal level, and the EAG response value of female adults was significantly higher than that of male adults. Furthermore, the results of behavioral bioassays showed that females were significantly attracted to citral. Conclusion Our results suggest that BminCSP3 plays an important role in the recognition of citral by B. minax adults. (c) 2022 Society of Chemical Industry.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序