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Instar-dependent systemic RNA interference response in Leptinotarsa decemlineata larvae

文献类型： 外文期刊

作者： Guo, Wen-Chao 1 ; Fu, Kai-Yun 1 ; Yang, Shuai 2 ; Li, Xiao-Xu 2 ; Li, Guo-Qing 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Plant Protect, Educ Minist, Key Lab Integrated Management Crop Dis & Pests, Nanjing 210095, Jiangsu, Peoples R China

2.Xinjiang Acad Agr Sci, Dept Plant Protect, Urumqi 830091, Peoples R China

关键词： Leptinotarsa decemlineata;RNA interference efficiency;Dicer;Argonaute

期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：3.963； 五年影响因子：4.454 ）

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收录情况： SCI

摘要： RNA interference (RNAi) is a promising approach to control Leptinotarsa decemlineata. In this study, RNAi efficiency by double-stranded RNA (dsRNA) targeting S-adenosyl-L-homocysteine hydrolase (LdSAHase) was compared among L. decemlineata first- to fourth-instar larvae. Ingesting dsLdSAHase successfully decreased the target gene expression, caused lethality, inhibited growth and impaired pupation in an instar- and concentration-dependent manner. To study the role of Dicer2 and Argonaute2 genes in RNAi efficiency, we identified LdDcr2a, LdDcr2b, LdAgo2a and LdAgo2b. Their expression levels were higher in young larvae than those in old ones. Exposure to dsegfp for 6 h significantly elevated LdDcr2a, LdDcr2b, LdAgo2a and LdAgo2b mRNA levels in the first-, second-, third- and fourth-instar larvae. When the exposure periods were extended, however, the expression levels were gradually reduced. Continuous exposure for 72 h significantly repressed the expression of LdAgo2a and LdAgo2b in the first, second and third larval instars, and the four genes in final instars. Moreover, we found that dsLdSAHase-caused LdSAHase suppressions and larval mortalities were influenced by previous dsegfp exposure: 12 h of previous exposure increased LdSAHase silencing and mortality of the final instar larvae, whereas 72 h of exposure reduced LdSAHase silencing and mortality. Thus, it seems the activities of core RNAi-machinery proteins affect RNAi efficiency in L decemlineata. (C) 2015 Elsevier Inc. All rights reserved.

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[2]Transcription changes of a putative trehalose-6-phosphate synthase gene in response to hormone stimulation in Leptinotarsa decemlineata (Say). Shi, Ji-Feng,Xu, Qing-Yu,Li, Guo-Qing,Guo, Wen-Chao. 2016

[3]RNA interference of a putative S-adenosyl-L-homocysteine hydrolase gene affects larval performance in Leptinotarsa decemlineata (Say). Zhou, Li-Tao,Jia, Shuang,Wan, Pin-Jun,Kong, Ye,Li, Guo-Qing,Guo, Wen-Chao,Ahmat, Tursun. 2013

[4]Involvement of a putative allatostatin in regulation of juvenile hormone titer and the larval development in Leptinotarsa decemlineata (Say). Meng, Qing-Wei,Liu, Xin-Ping,Lu, Feng-Gong,Fu, Kai-Yun,Li, Guo-Qing,Guo, Wen-Chao. 2015

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[6]Efficacy of endosulfan and fipronil and joint toxic action of endosulfan mixtures against Leptinotarsa decemlineata (Say). Shi, Xiao-qin,Xiong, Man-Hui,Jiang, Wei-Hua,Wang, Zhi-Tian,Li, Guo-Qing,Guo, Wen-Chao,Xia, Zhen-Han,Fu, Wen-Jun. 2012

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[9]Effect of Temperature on the Occurrence and Distribution of Colorado Potato Beetle (Coleoptera: Chrysomelidae) in China. Liu, Huai,Wang, Jin-Jun,Li, Chao,Cheng, Deng-Fa,Zhang, Yun-Hui,Sun, Jin-Rui,Huang, Fangneng,Guo, Wen-Chao. 2014

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[11]Receptor tyrosine kinase genes respond transcriptionally to sublethal doses of five insecticides by a mode-of-action independent way in Leptinotarsa decemlineata (Say). Shi, Ji-Feng,Zhu, Tao-Tao,Li, Guo-Qing,Guo, Wen-Chao. 2016

[12]The basic helix-loop-helix transcription factors in the Colorado potato beetle Leptinotarsa decemlineata. Fu, Kai-Yun,Meng, Qing-Wei,Lu, Feng-Gong,Li, Guo-Qing,Guo, Wen-Chao,Ahmat, Tursun. 2015

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[15]Functions of nuclear receptor HR3 during larval-pupal molting in Leptinotarsa decemlineata (Say) revealed by in vivo RNA interference. Guo, Wen-Chao,Liu, Xin-Ping,Fu, Kai-Yun,Shi, Ji-Feng,Lu, Feng-Gong,Li, Guo-Qing,Guo, Wen-Chao.

[16]Identification of ten mevalonate enzyme-encoding genes and their expression in response to juvenile hormone levels in Leptinotarsa decemlineata (Say). Li, Qian,Meng, Qing-Wei,Lu, Feng-Gong,Li, Guo-Qing,Guo, Wen-Chao.

[17]Transcription response of three putative trehalase genes to hormonal stimulation in the Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae). Shi, Ji-Feng,Sun, Qiang-Kun,Mu, Li-Li,Li, Guo-Qing,Guo, Wen-Chao.

[18]Involvement of FTZ-F1 in the regulation of pupation in Leptinotarsa decemlineata (Say). Liu, Xin-Ping,Fu, Kai-Yun,Lu, Feng-Gong,Meng, Qing-Wei,Li, Guo-Qing,Guo, Wen-Chao.

[19]Insecticide resistance status of Colorado potato beetle (Coleoptera: Chrysomelidae) adults in Northern Xinjiang Uygur autonomous region. Jiang, Wei-Hua,Wang, Zhi-Tian,Xiong, Man-Hui,Lu, Wei-Ping,Liu, Ping,Li, Guo-Qing,Jiang, Wei-Hua,Wang, Zhi-Tian,Xiong, Man-Hui,Lu, Wei-Ping,Liu, Ping,Li, Guo-Qing,Guo, Wen-Chao.

[20]Nuclear receptor ecdysone-induced protein 75 is required for larval-pupal metamorphosis in the Colorado potato beetle Leptinotarsa decemlineata (Say). Guo, W-C.,Liu, X-P.,Fu, K-Y.,Shi, J-F.,Lu, F-G.,Li, G-Q.,Guo, W-C..

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