Effects of introducing theanine or glutamic acid core to tralopyril on systemicity and insecticidal activity
文献类型： 外文期刊
作者： Yang, Wen 1 ; Chen, Yao 1 ; Zhang, Ying 4 ; Gao, Xiu-Bing 1 ; Zhou, Yu-Feng 1 ;
作者机构： 1.Guizhou Acad Agr Sci, Guizhou Tea Res Inst, Guiyang 550006, Guizhou, Peoples R China
2.Guizhou Univ, Inst Entomol, Guiyang 550025, Guizhou, Peoples R China
3.Guizhou Univ, GuizhouProv Key Lab Agr Pest Management Mountaino, Guiyang 550025, Guizhou, Peoples R China
4.Guizhou Acad Agr Sci, Guizhou Inst Plant Protect, Guiyang 550006, Guizhou, Peoples R China
关键词： Theanine;Glutamic acid;Tralopyril;Chlorfenapyr;Phloem mobility
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：3.963； 五年影响因子：4.454 ）
ISSN： 0048-3575
年卷期： 2017 年 141 卷
页码：
收录情况： SCI
摘要： Tralopyril was the active agent of a pro-insecticide chlorfenapyr. To simultaneously solve the problems of the phytotoxicity and non-systemic insecticidal activity of tralopyril, four new tralopyril conjugates containing theanine or glutamic acid moieties were designed and synthesized. Their phytotoxicity to tea shoot, phloem systemicity, and insecticidal activity were evaluated. Phytotoxic symptoms were not observed after the tea shoots were exposed to the four conjugates at concentrations of 2 mM. The phloem mobility test on Ricinus communis L seedlings confirmed that all four conjugates were mobile in the sieve tubes. Results of insecticidal activity against the third-instar larvae of Plutella xylostella showed that only conjugate 20 exhibited activity with an LC50 value of 0.5882 +/- 0.0504 mM. After root application to tea seedlings, conjugate 20 showed obviously systemic insecticidal activity against Dendrothrips minowai Priesner, while chlorfenapyr showed no attribute of that. A new conjugate as potential phloem mobile pro-insecticide candidate was provided and so a novel strategy of pro-insecticide for improved phloem systemicity was proposed. (C) 2016 Elsevier Inc. All rights reserved.
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