数字农科院2.0

Identification and RNAi-based function analysis of trehalase family genes in Frankliniella occidentalis (Pergande)

文献类型： 外文期刊

作者： Zheng, Xiaobin;Yuan, Jiangjiang;Qian, Kanghua;Tang, Yingxi;Wang, Jing;Zhang, Ying;Feng, Jiuming;Cao, Hongyi;Xu, Baoyun;Zhang, Youjun;Liang, Pei;Wu, Qingjun

作者机构：

关键词： chitin biosynthesis;energy metabolism;gene silencing;thrips;trehalase

期刊名称： PEST MANAGEMENT SCIENCE

ISSN： 1526-498X

年卷期： 2024 年

页码：

收录情况： SCIE（2024版）

摘要： BACKGROUND: Insects utilize trehalases (TREs) to regulate energy metabolism and chitin biosynthesis, which are essential for their growth, development, and reproduction. TREs can therefore be used as potential targets for future insecticide development. However, the roles of TREs in Frankliniella occidentalis (Pergande), a serious widespread agricultural pest, remain unclear. RESULTS: Three TRE genes were identified in F. occidentalis and cloned, and their functions were then investigated via feeding RNA interference (RNAi) and virus-induced gene silencing (VIGS) assays. The results showed that silencing FoTRE1-1 or FoTRE1-2 significantly decreased expression levels of FoGFAT, FoPGM, FoUAP, and FoCHS, which are members of the chitin biosynthesis pathway. Silencing FoTRE1-1 or FoTRE2 significantly down-regulated FoPFK and FoPK, which are members of the energy metabolism pathway. These changes resulted in 2-fold decreases in glucose and glycogen content, 2-fold increases in trehalose content, and 1.5- to 2.0-fold decreases in chitinase activity. Furthermore, knocking down FoTRE1-1 or FoTRE1-2 resulted in deformed nymphs and pupae as a result of hindered molting. The VIGS assay for the three FoTREs revealed that FoTRE1-1 or FoTRE2 caused shortened ovarioles, and reduced egg-laying and hatching rates. CONCLUSION: The results suggest that FoTRE1-1 and FoTRE1-2 play important roles in the growth and development of F. occidentalis, while FoTRE1-1 and FoTRE2 are essential for its reproduction. These three genes could be candidate targets for RNAi-based management and control of this destructive agricultural pest. (c) 2024 Society of Chemical Industry.

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