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J Econ Entomol

Title:		Does Background Odor in Tea Gardens Mask Attractants? Screening and Application of Attractants for Empoasca onukii Matsuda
Author(s):		Xu X; Cai X; Bian L; Luo Z; Li Z; Chen Z;
Address:		"Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, China. Shandong Institute of Pomology, Shandong Academy of Agricultural Sciences, China"
Journal Title:		J Econ Entomol
Year:		2017
Volume:		110
Issue:		6
Page Number:		2357 - 2363
DOI:		10.1093/jee/tox269
ISSN/ISBN:		1938-291X (Electronic) 0022-0493 (Linking)
Abstract:		"Plant volatiles help herbivores to locate their hosts, and therefore, they could be used to help develop pesticide-free pest management strategies. To develop an attractant for tea leafhopper (Empoasca onukii), we screened nine tea plant volatile compounds for their attractiveness using Y-tube olfactometer assays. Results indicated that tea leafhoppers significantly preferred ocimene, limonene, (Z)-3-hexenol, and (Z)-3-hexenyl acetate over clean air. These compounds were combined in a blend which lost its attractiveness at concentrations below 10-2 g/ml in liquid paraffin. In field tests, the blend was attractive to leafhoppers only in autumn, but not in summer. Analyses of the tea field background odor showed that all four components of the blend were present at much higher concentrations in summer (0.05-0.001 ng/liter) than in autumn (~10- to 25-fold lower). In field Y-tube bioassays, compared with the tea field background odor, the blend was attractive at a concentration of 10-1 g/ml in liquid paraffin, but not at 10-2 g/ml. These results suggest that field background odor can disrupt the attractiveness of an attractant based on plant volatiles to herbivores"
Keywords:		"Animals Camellia sinensis/*chemistry *Chemotaxis China Dose-Response Relationship, Drug Female Hemiptera/*physiology Male Odorants/*analysis Pheromones/*pharmacology Volatile Organic Compounds/*metabolism Empoasca onukii attractant background odor plant v;"
Notes:		"MedlineXu, Xiuxiu Cai, Xiaoming Bian, Lei Luo, Zongxiu Li, Zhaoqun Chen, Zongmao eng Research Support, Non-U.S. Gov't England 2017/10/19 J Econ Entomol. 2017 Dec 5; 110(6):2357-2363. doi: 10.1093/jee/tox269"