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BioControl

, Volume 61, Issue 1, pp 1–12 | Cite as

Application of chemical elicitor (Z)-3-hexenol enhances direct and indirect plant defenses against tea geometrid Ectropis obliqua

  • Zhaojun Xin
  • Xiwang Li
  • Jiancai Li
  • Zongmao Chen
  • Xiaoling Sun
Article

Abstract

Plants can respond to herbivorous attack with induced defense mechanisms. Plant elicitors play vital roles in inducing the plant defense response against herbivores. In this study, we investigated the effect of (Z)-3-hexenol (z3HOL), an important component of green leaf volatiles (GLVs), on the induced defense against a tea geometrid (TG) Ectropis obliqua Prout in tea plants. We showed that treatment with z3HOL elicites increased levels of jasmonic acid (JA) and ethylene (ET) as well as of expression of a lipoxygenase gene CsiLOX1 and a putative ACC synthase gene CsiACS1. Such reactions resulted in a marked increase in polyphenol oxidase (PPO) activity and volatile production. The induced tea plants reduced the performance of TG and became highly attractive to the main parasitoid wasp, Apanteles sp. These findings suggest that z3HOL can serve as an elicitor that triggers direct and indirect defense responses against TG by modulating signaling pathways in tea and provide a friendly strategy for biological control of pests.

Keywords

(Z)-3-hexenol Induced defense Ectropis obliqua Jasmonic acid Ethylene Tea 

Notes

Acknowledgments

We thank Jianying Jin for invaluable assistance with the experiments. The study was jointly sponsored by Special Fund for Agro-scientific Research in the Public Interest (201403030), National Natural Science Foundation of China (31401758), National Program on Key Basic Research Project (973 Program) (2012CB114104), Zhejiang Provincial Natural Science Foundation of China (LQ14C140001).

Supplementary material

10526_2015_9692_MOESM1_ESM.doc (26 kb)
Supplementary material 1 (DOC 26 kb)

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Copyright information

© International Organization for Biological Control (IOBC) 2015

Authors and Affiliations

  1. 1.Tea Research InstituteChinese Academy of Agricultural SciencesHangzhouChina
  2. 2.Key Laboratory of Tea Biology and Resources UtilizationMinistry of AgricultureHangzhouChina
  3. 3.National Key Laboratory of Rice Biology, Institute of Insect ScienceZhejiang UniversityHangzhouChina

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