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Pest Manag Sci

Title:		Behavioral and physiological responses of Drosophila melanogaster and D. suzukii to volatiles from plant essential oils
Author(s):		Wang Q; Xu P; Sanchez S; Duran P; Andreazza F; Isaacs R; Dong K;
Address:		"Department of Entomology, Michigan State University, East Lansing, MI, USA. Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, China"
Journal Title:		Pest Manag Sci
Year:		2021
Volume:		20210201
Issue:		8
Page Number:		3698 - 3705
DOI:		10.1002/ps.6282
ISSN/ISBN:		1526-4998 (Electronic) 1526-498X (Linking)
Abstract:		"BACKGROUND: Insects rely on their sense of smell to locate food and hosts, find mates and select sites for laying eggs. Use of volatile compounds, such as essential oils (EOs), to repel insect pests and disrupt their olfaction-driven behaviors has great practical significance in integrated pest management. However, our knowledge on the olfaction-based mechanisms of EO repellency is quite limited. RESULTS: We evaluated the repellency of peppermint oil and nine plant EO components in Drosophila melanogaster, a model insect for olfaction study, and D. suzukii, a major fruit crop pest. All nine volatiles, menthone, (-)-menthol, menthyl acetate, (R)-(+)-limonene, nerol, (+)-fenchone, (-)-alpha-thujone, camphor, norcamphor and peppermint oil, elicited repellency in D. melanogaster in a dose-dependent manner. Most of the compounds, except camphor, also elicited repellency in D. suzukii. Menthone, (R)-(+)-limonene and (+)-fenchone were the most potent repellents against D. suzukii. Repellency was reduced or abolished in two D. melanogaster mutants of the odorant receptor co-receptor (Orco), indicating that the observed repellency is odorant receptor (Or)-mediated. Repellency by peppermint oil, menthone, (R)-(+)-limonene, (-)-alpha-thujone and norcamphor also involves Or-independent mechanism(s). Single sensillum recording from both species revealed that common and distinct Ors and olfactory receptor neurons were activated by these compounds. CONCLUSIONS: The tested plant EO components evoke repellency by activating multiple Ors in both Drosophila species. Our study provides a foundation for further elucidation of the mechanism of EOs repellency and species-specific olfactory adaptations. (c) 2021 Society of Chemical Industry"
Keywords:		"Animals Drosophila Drosophila melanogaster *Insect Repellents *Oils, Volatile Plant Oils *Receptors, Odorant essential oils olfaction olfactory receptor neurons repellency single sensillum recording;"
Notes:		"MedlineWang, Qiang Xu, Peng Sanchez, Simon Duran, Phil Andreazza, Felipe Isaacs, Rufus Dong, Ke eng R25 NS090989/NS/NINDS NIH HHS/ 115475/GM/NIGMS NIH HHS/ R01 GM115475/GM/NIGMS NIH HHS/ England 2021/01/15 Pest Manag Sci. 2021 Aug; 77(8):3698-3705. doi: 10.1002/ps.6282. Epub 2021 Feb 1"