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Sci Rep

Title:		A Disease Resistance Elicitor Laminarin Enhances Tea Defense against a Piercing Herbivore Empoasca (Matsumurasca) onukii Matsuda
Author(s):		Xin Z; Cai X; Chen S; Luo Z; Bian L; Li Z; Ge L; Chen Z;
Address:		"Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China. Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, 310008, China. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China. zmchen2006@163.com. Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, 310008, China. zmchen2006@163.com"
Journal Title:		Sci Rep
Year:		2019
Volume:		20190128
Issue:		1
Page Number:		814 -
DOI:		10.1038/s41598-018-37424-7
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"The tea plant (Camellia sinensis) suffers heavily from a harmful piercing pest, the tea green leafhopper (TLH) Empoasca (Matsumurasca) onukii Matsuda. In the present study, we studied the effect of an efficient elicitor of plant disease resistance, the beta-1,3-glucan laminarin, on the induced defense against TLH in tea plants. Defense responses elicited by laminarin in tea include the activation of mitogen-activated protein kinases and WRKY, the burst of H(2)O(2), salicylic acid, and abscisic acid, and the accumulation of direct-defense chemicals (including chitinase, phenylalanine ammonia lyase, callose, polyphenol oxidase, and flavonol synthase), as well as the production of volatile compounds. The laminarin-treated tea plants reduced the performance of TLH and enhanced the attractiveness to the egg parasitoid wasp of TLH, Stethynium empoascae Subba Rao. In the field experiment, laminarin application effectively reduced the number of TLH by attracting parasitoids. These results suggest that laminarin can induce protection against TLH by regulating signaling pathways in tea plant. Our study also proposes an environment friendly strategy for the integrated management of an economically important piercing pest"
Keywords:		"Abscisic Acid/metabolism Animals Camellia sinensis/drug effects/genetics/*parasitology *Disease Resistance Extracellular Signal-Regulated MAP Kinases/genetics Gene Expression Regulation, Plant/drug effects Glucans/*pharmacology Hemiptera/*pathogenicity Hy;"
Notes:		"MedlineXin, Zhaojun Cai, Xiaoming Chen, Shenglong Luo, Zongxiu Bian, Lei Li, Zhaoqun Ge, Lingang Chen, Zongmao eng Research Support, Non-U.S. Gov't England 2019/01/30 Sci Rep. 2019 Jan 28; 9(1):814. doi: 10.1038/s41598-018-37424-7"