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Volatiles from Cotton Plants Infested by Agrotis segetum (Lep.: Noctuidae) Attract the Larval Parasitoid Microplitis mediator (Hym.: Braconidae)

文献类型： 外文期刊

作者： Li, Mengyu 1 ; Xia, Shike 1 ; Zhang, Tao 3 ; Williams, Livy, III 4 ; Xiao, Haijun 2 ; Lu, Yanhui 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China

2.Jiangxi Agr Univ, Inst Entomol, Nanchang 330045, Jiangxi, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Minist Agr, Inst Plant Protect, Key Lab IPM Crops Northern Reg North China,Integr, Baoding 071000, Peoples R China

4.USDA ARS, US Vegetable Lab, Charleston, SC 29414 USA

关键词： turnip moth; parasitoid wasp; herbivore-induced plant volatiles; behavioral response; biological control

期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）

ISSN：

年卷期： 2022 年 11 卷 7 期

页码：

收录情况： SCI

摘要： Herbivore-induced plant volatiles (HIPVs), chemicals produced by plants infested by herbivorous insects, can act as kairomones that recruit natural enemies of the pest herbivore. Agrotis segetum (Denis and Schiffermuller) is a common, important pest of seedling cotton in Xinjiang Province, China, and the braconid Microplitis mediator (Haliday) is an important mortality factor of this pest's larvae. In olfactometer tests, which included healthy foliage, infested foliage, or infested roots, M. mediator preferred A. segetum-infested cotton plants to healthy cotton plants. In GC-MS analyses of plant-emitted volatiles, we found that compounds emitted increased 14.9- and 13.3- fold after leaf infestation and root infestation, respectively, compared to healthy control plants. The volatiles were mainly p-xylene, nonanal, tetradecane, decanal, benzaldehyde, beta-caryophyllene, and humulene, while linalool was only present in the leaf-infestation treatment. In addition, principal component analysis indicated that all 18 compounds were associated with the infested plants, especially beta-caryophyllene, p-xylene, and decanal. Based on the above studies and previous functional evaluations of the volatile compounds, it can be demonstrated that these compounds play a crucial role in modulating the interactions between A. segetum and M. mediator and regulating parasitoid behavior. It may be possible to enhance the biological control of A. segetum by M. mediator through the application of HIPVs.

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[1]Volatiles from Cotton Plants Infested by Agrotis segetum (Lep.: Noctuidae) Attract the Larval Parasitoid Microplitis mediator (Hym.: Braconidae). Li, Mengyu,Xia, Shike,Lu, Yanhui,Li, Mengyu,Xiao, Haijun,Zhang, Tao,Williams, Livy, III. 2022

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