Neuroligin 3 from common cutworm enhances the GABA-induced current of recombinant SlRDL1 channel
文献类型： 外文期刊
作者： Wang, Ying 1 ; Zhang, Yi-Chi 1 ; Zhang, Ke-Xin 1 ; Jia, Zhong-Qiang 1 ; Tang, Tao 2 ; Zheng, Lin-Lin 3 ; Liu, Di 1 ; Zhao 1 ;
作者机构： 1.Nanjing Agr Univ, Key Lab Integrated Pest Management Crops East Chi, Minist Agr, Nanjing, Peoples R China
2.Hunan Acad Agr Sci, Inst Plant Protect, Changsha, Peoples R China
3.Chongqing Co China Natl Tobacco Corp, Wuxi Branch, Coll Plant Protect, Wuxi, Jiangsu, Peoples R China
关键词： electrophysiological; Lepidoptera; neuroligin; RNAi; Spodoptera litura
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）
ISSN： 1526-498X
年卷期：
页码：
收录情况： SCI
摘要： BACKGROUND Neuroligin (NLG) protein is a nerve cell adhesion molecule and plays a key role in the precision apposition of presynaptic domains on inhibitory and excitatory synapses. Existing studies mainly focused on the function of NLG3 against the excitatory channel. However, the interaction between insect NLG3 and ionotropic GABA receptor, which is the main inhibitory channel, remains unclear. In this study, the Nlg3 of common cutworm (CCW), Spodoptera litura Fabricius, one important agricultural Lepidopteron, is selected to explore its function in the inhibitory channel. RESULTS The SlNlg3 was obtained and the SlNLG3 contains the characteristic features including transmembrane domain, PDZ-binding motif and type-B carboxylesterases signature 2 motif. The SlNlg3 messenger RNA (mRNA) was most abundant in midgut, and exhibited multiple expression patterns in different developmental stages and tissues or body parts. Compared with the single injection of SlRDL1, the median effective concentration value of GABA in activating currents was smaller in Xenopus laevis oocytes co-injected with SlRDL1 and SlNlg3. In addition, SlNlg3 could enhance the GABA-induced current of homomeric SlRDL1 channel from -391.86 +/- 15.41 to -2152.51 +/- 30.09 nA. DsSlNlg3 depressed the expression level of SlNlg3 mRNA more than 64.29% at 6 h. After exposure to median lethal dose of fluralaner, the mortality of CCW injected with dsSlNlg3 was significantly decreased by 13.34% and 30.00% at 24 and 48 h, respectively, compared to injection of dsEGFP. CONCLUSION NLG3 should have physiological function on ionotropic GABA receptor in vitro, which provided a favorable foundation for further research on the physiological function of Nlg gene in Lepidopteron.
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