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Identification of Aggregation Pheromone as an Attractant for Odontothrips loti, A Serious Thrips Pest on Alfalfa

文献类型： 外文期刊

作者： Li, Xiaowei 1 ; Cheng, Jianghui 1 ; Han, Haibin 2 ; Kirk, William D. J. 3 ; O'Brien, Matthew 4 ; Wang, Likun 5 ; Chen, Limin 1 ; Zhang, Haixia 1 ; Zhang, Zhijun 1 ; Ullah, Farman 1 ; Desneux, Nicolas 6 ; Lu, Yaobin 1 ;

作者机构： 1.Inst Plant Protect & Microbiol, Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Key Lab Biotechnol Plant Protect MOA China & Zheji, Hangzhou 310021, Peoples R China

2.Chinese Acad Agr Sci, Inst Grassland Res, Hohhot 010010, Peoples R China

3.Keele Univ, Sch Life Sci, Keele ST5 5BG, Staffs, England

4.Keele Univ, Sch Chem & Phys Sci, Keele ST5 5BG, Staffs, England

5.Zhejiang Shuren Univ, Interdisciplinary Res Acad, Key Lab Pollut Exposure & Hlth Intervent Zhejiang, Hangzhou 310015, Peoples R China

6.Univ Cote Azur, INRAE, CNRS, UMR ISA, F-06000 Nice, France

7.Inst Biointeract, Xianghu Lab, Hangzhou 311258, Peoples R China

关键词： Alfalfa; Thrips; Odontothrips loti; Aggregation pheromone; (R)-lavandulyl (R)-2-methylbutanoate; Attractants; IPM

期刊名称：JOURNAL OF CHEMICAL ECOLOGY （ 影响因子：2.2； 五年影响因子：2.7 ）

ISSN： 0098-0331

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Odontothrips loti (Haliday) (Thysanoptera: Thripidae) is one of the most serious pests on alfalfa, causing direct damage by feeding and indirect damage by transmitting plant viruses. This damage causes significant loss in alfalfa production. Semiochemicals offer opportunities to develop new approaches to thrips management. In this study, behavioral responses of female and male adults of O. loti to headspace volatiles from live female and male conspecifics were tested in a Y-tube olfactometer. The results showed that both male and female adults of O. loti were attracted to the odors released by conspecific males but not those released by females. Headspace volatiles released by female and male adults were collected using headspace solid-phase microextraction (HS-SPME). The active compound in the volatiles was identified by gas chromatography-mass spectrometry (GC-MS). The analysis showed that there was one major compound, (R)-lavandulyl (R)-2-methylbutanoate. The attractive activity of the synthetic aggregation pheromone compound was tested under laboratory and field conditions. In an olfactometer, both male and female adults showed significant preference for synthetic (R)-lavandulyl (R)-2-methylbutanoate at certain doses. Lures with synthetic (R)-lavandulyl (R)-2-methylbutanoate significantly increased the trap catches of sticky white traps at doses of 40-80 mu g in the field. This study confirmed the production of aggregation pheromone by O. loti male adults and identified its active compound as (R)-lavandulyl (R)-2-methylbutanoate, providing a basis for population monitoring and mass trapping of this pest.

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