| Title: | Identification and evaluation of cruciferous plant volatiles attractive to Plutella xylostella L. (Lepidoptera: Plutellidae) |
| Author(s): | Yan XZ; Ma L; Li XF; Chang L; Liu QZ; Song CF; Zhao JY; Qie XT; Deng CP; Wang CZ; Hao C; |
| Address: | "College of Plant Protection, Shanxi Agricultural University, Taigu, China. State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. College of Forestry, Shanxi Agricultural University, Taigu, China" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: The diamondback moth, Plutella xylostella, has developed resistance to almost all insecticides used for its control. The 'push-pull' method has been shown as an effective control strategy to address this resistance challenge of P. xylostella. The key focus of the strategy is the identification of attractive or repellent volatile components. The aim of this study was to identify attractive volatile compounds released from host plants. Identified compounds were applied in the biological control of this pest. RESULTS: Nine active compounds released into the headspace of seven cruciferous plant species were identified using gas chromatography-electroantennographic detection and gas chromatography-mass spectrometry. Electroantennographic detection-active compounds included five green leaf volatiles (hexanal, trans-2-hexen-1-ol, cis-3-hexen-1-ol, cis-3-hexenyl acetate, and 1-penten-3-ol), three isothiocyanates (isopropyl isothiocyanate, allyl isothiocyanate, and butyl isothiocyanate), and nonanal. Except for nonanal, all the identified green leaf volatiles and isothiocyanates elicited strong electrophysiological and behavioral responses in P. xylostella. The strongest attractive compounds, trans-2-hexen-1-ol and isopropyl isothiocyanate, were further evaluated in oviposition and field-trapping assays. Results showed that they both lured female moths to lay eggs, and were highly attractive to P. xylostella adults in field, especially when used in combination with yellow and green sticky boards. However, a blend of the two compounds showed no synergistic effect, but rather an antagonistic effect. CONCLUSIONS: Green leaf volatiles and isothiocyanates were identified as key olfactory cues for host selection of P. xylostella. Trans-2- hexen-1-ol and isopropyl isothiocyanate were identified as candidate attractive compounds to serve in a 'push-pull' strategy for P. xylostella control. (c) 2023 Society of Chemical Industry" |
| Keywords: | Plutella xylostella attractive cruciferous plants volatiles 'push-pull' strategy; |
| Notes: | "PublisherYan, Xi-Zhong Ma, Li Li, Xiao-Fei Chang, Le Liu, Qing-Zhao Song, Cheng-Fei Zhao, Jin-Yu Qie, Xing-Tao Deng, Cai-Ping Wang, Chen-Zhu Hao, Chi eng 32130090/National Natural Science Foundation of China/ IPM2002/State Key Laboratory of Integrated Management of Pest Insects and Rodents/ ZBXY23B-11/Cultivation and Innovation Project of Plant Protection College of Shanxi Agricultural University/ CYYL23-25/Leading Industrial & Engineering Research Project of Shanxi Agricultural University/ England 2023/08/21 Pest Manag Sci. 2023 Aug 21. doi: 10.1002/ps.7735" |
