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A Disease Resistance Elicitor Laminarin Enhances Tea Defense against a Piercing Herbivore Empoasca (Matsumurasca) onukii Matsuda
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A Disease Resistance Elicitor Laminarin Enhances Tea Defense against a Piercing Herbivore Empoasca (Matsumurasca) onukii Matsuda
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Journal Article
A Disease Resistance Elicitor Laminarin Enhances Tea Defense against a Piercing Herbivore Empoasca (Matsumurasca) onukii Matsuda
2019
Overview
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 β-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.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 38
/ 38/22
/ 38/39
/ 82/1
/ 82/51
/ 9/30
/ 96/34
/ Ammonia
/ Animals
/ Camellia sinensis - drug effects
/ Camellia sinensis - genetics
/ Camellia sinensis - parasitology
/ Empoasca
/ Extracellular Signal-Regulated MAP Kinases - genetics
/ Gene Expression Regulation, Plant - drug effects
/ Humanities and Social Sciences
/ Hydrogen Peroxide - metabolism
/ Kinases
/ Pests
/ Science
/ Signal Transduction - drug effects
/ Tea
