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Nicotine-mediated dopamine regulates short neuropeptide F to inhibit brown planthopper feeding behavior in tobacco-rice rotation cropping

文献类型： 外文期刊

作者： Yuan, Longyu 1 ; Liang, Qichang 1 ; Li, Yanfang 1 ; Dai, Yangsuo 1 ; Shen, Jianmei 2 ; Hu, Liming 2 ; Xiao, Hanxiang 1 ; Zhang, Zhenfei 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou, Peoples R China

2.Zhongkai Univ Agr & Engn, Key Lab Green Prevent & Control Fruits & Vegetable, Minist Agr & Rural Affairs, Guangzhou, Peoples R China

3.Zhongkai Univ Agr & Engn, Key Lab Green Prevent & Control Fruits & Vegetable, Minist Agr & Rural Affairs, Guangzhou 510225, Peoples R China

4.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510642, Peoples R China

关键词： Nilaparvata lugens; nicotine; short neuropeptide F; tobacco-rice rotation cropping system; dopamine

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.1； 五年影响因子：4.4 ）

ISSN： 1526-498X

年卷期： 2023 年 79 卷 8 期

页码：

收录情况： SCI

摘要： BACKGROUND: The tobacco-rice rotation cropping (TRRC) is an ecologically friendly system that can both alleviate soil nicotine pollution and decrease the brown planthopper (BPH, Nilaparvata lugens Stal) fitness on rice. However, few studies on this green and effective rotational cropping system have been reported. In particular, the underlying mechanisms of TRRC on the significant reduction of field pest population at the molecular level is still unknown. RESULTS: Field investigation showed that BPH population decreased significantly in TRRC than in rice-rice successive cropping (RRSC) field. In addition, the short neuropeptide F (NlsNPF) and its receptor NlA7 of BPH had half-times lower levels in the TRRC field. Behavioral bioassay indicated a 1.93-fold increase in the number of salivary flanges of the dsNlsNPF group, while BPH fitness parameters, such as honeydew, weight gain, and mortality decreased significantly. Dopamine (DA) content in BPH decreased by similar to 11.1% under the influence of nicotine, and its presence increased the expression levels of NlsNPF and NlA7. Exogenous DA application eliminated the inhibitory effects of nicotine on BPH feeding and restored the fitness levels of its parameters. Independent application of either a mixture of dsNlsNPF with a nanocarrier or nicotine to the normal rice field revealed that the latter could produce better effects in combination with dsRNA. CONCLUSION: These findings confirmed that DA regulated NlsNPF to inhibit the BPH feeding behavior in TRRC. The results not only provided novel findings on the mechanism of pest-host interactions, but also presented new method for integrated pest management. (c) 2023 Society of Chemical Industry.

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