| Title: | "Electrophysiological and Behavioral Responses of Plutella xylostella (Lepidoptera: Plutellidae) to Volatiles from a Non-host Plant, Geranium, Pelargonium x hortorum (Geraniaceae)" |
| Author(s): | Song C; Ma L; Zhao J; Xue Z; Yan X; Hao C; |
| Address: | "College of Plant Protection, Shanxi Agricultural University, Taigu 030801, PR China" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "The diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae), is a notorious cruciferous vegetable pest globally. Mechanically damaged geranium (Pelargonium x hortorum) can strongly repel DBM, but specific plant bioactive compounds responsible for such effects have not been identified. The headspace volatiles from wounded geranium were analyzed using gas chromatography-electroantennographic detection and gas chromatography-mass spectrometry. The electrophysiological and behavioral responses of DBM females to these chemicals and two blends were investigated. The results showed that five components myrcene, gamma-terpinene, linalool, camphor, and terpinen-4-ol in geranium plants mediated the repellence of DBM mated females. These substances significantly repelled the oviposition of females, and blend-2 (a mixture of the five components with a ratio 1:5:3:4:3) was most effective. The slow-release blend-2 had a repellent range of 0.9 m and a repellent longevity of 26 days. These five substances are promising behavioral regulators of the destructive moths and could be potential candidates for 'push' components in plant-based 'push-pull' strategies" |
| Keywords: | Animals Female Gas Chromatography-Mass Spectrometry *Geraniaceae *Geranium *Insect Repellents/pharmacology *Moths *Pelargonium diamondback moth geranium repellent effect semiochemical 'push-pull' strategy; |
| Notes: | "MedlineSong, Chengfei Ma, Li Zhao, Jinyu Xue, Zengsheng Yan, Xizhong Hao, Chi eng 2022/05/17 J Agric Food Chem. 2022 May 25; 70(20):5982-5992. doi: 10.1021/acs.jafc.1c08165. Epub 2022 May 16" |
