The Jinggangmycin-induced Mthl2 gene regulates the development and stress resistance in Nilaparvata lugens Stål (Hemiptera: Delphacidae)
文献类型： 外文期刊
作者： Zhu, Haowen 1 ; Ahmad, Sheraz 1 ; Duan, Zhirou 1 ; Shi, Junting 1 ; Tang, Xingyu 1 ; Dong, Qiaoqiao 1 ; Xi, Chuanyuan 1 ; Ge, Linquan 1 ; Wu, Tao 2 ; Tan, Yongan 3 ;
作者机构： 1.Yangzhou Univ, Coll Plant Protect, Yangzhou 225009, Peoples R China
2.Yangzhou Univ, Coll Hort & Landscape Architecture, Yangzhou 225009, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China
关键词： Nilaparvata lugens; Methuselah-like 2 (Mthl2); Stress resistance; Development; Jinggangmycin
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.7； 五年影响因子：4.7 ）
ISSN： 0048-3575
年卷期： 2023 年 196 卷
页码：
收录情况： SCI
摘要： Methuselah (Mth) belongs to the GPCR family B, which regulates various biological processes and stress responses. The previous transcriptome data showed jinggangmycin (JGM)-induced Mthl2 expression. However, its detailed functional role remained unclear in brown planthopper, Nilaparvata lugens Stal. In adult N. lugens, the Mthl2 gene showed dominant expressions, notably in ovaries and fat body tissues. The 3rd instar nymphs treated with JGM increased starvation, oxidative stress, and high temperature (34 degrees C) tolerance of the adults. On the contrary, under dsMthl2 treatment, completely opposite phenotypes were observed. The lipid synthesis genes (DGAT1and PNPLA3) of both females and males treated with JGM in the nymphal stage were observed with high expressions, while the lipolysis of the Lipase 3 gene was observed with low expressions. The JGM increased triglyceride (TG) content, fat body droplet size, and the number of fat body droplets. The same treatment also increased the Glutathione S-transferase (GST), catalase (CAT), and superoxide dismutase (SOD) activities. An increase in the heat shock protein (HSP70 and HSP90) expression levels was also observed under JGM treatment but not dsMthl2. The current study demonstrated the influential role of the Mthl genes, particularly the Mthl2 gene, in modulating the growth and development and stress-responsiveness in N. lugens. Thus, providing a platform for future applied research programs controlling N. lugens population in rice fields.
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