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Molecular and Functional Characterization of One Odorant-Binding Protein Gene OBP3 in Bemisia tabaci (Hemiptera: Aleyrodidae)

文献类型: 外文期刊

作者: Wang, Ran 1 ; Hu, Yuan 1 ; Wei, Peiling 1 ; Qu, Cheng 1 ; Luo, Chen 1 ;

作者机构: 1.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

关键词: Bemisia tabaci; odorant-binding protein; chemical perception; competitive binding assay; behavioral response

期刊名称:JOURNAL OF ECONOMIC ENTOMOLOGY ( 影响因子:2.381; 五年影响因子:2.568 )

ISSN: 0022-0493

年卷期: 2020 年 113 卷 1 期

页码:

收录情况: SCI

摘要: Odorant binding proteins (OBPs) of insects play a critical role in chemical perceptions and choice of insect host plant. Bemisia tabaci is a notorious insect pest which can damage more than 600 plant species. In order to explore functions of OBPs in B. tabaci, here we investigated binding characteristics and function of odorant-binding protein 3 in B. tabaci (BtabOBP3). The results indicated that BtabOBP3 shows highly similar sequence with OBPs of other insects, including the typical signature motif of six cysteines. The recombinant BtabOBP3 protein was obtained, and the evaluation of binding affinities to tested volatiles of host plant was conducted, then the results indicated that beta-ionone had significantly higher binding to BtabOBP3 among other tested plant volatiles. Furthermore, silencing of BtabOBP3 significantly altered choice behavior of B. tabaci to beta-ionone. In conclusion, it has been demonstrated that BtabOBP3 exerts function as one carrier of beta-ionone and the results could be contributed to reveal the mechanisms of choosing host plant in B. tabaci.

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