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Clathrin-dependent endocytosis plays a critical role in larval and pupal development, and female oocyte production in the red flour beetle (Tribolium castaneum)

文献类型： 外文期刊

作者： Xiao, Da 2 ; Yao, Jianxiu 4 ; Gao, Xiwu 3 ; Zhu, Kun Yan 1 ;

作者机构： 1.Kansas State Univ, Dept Entomol, 123 Waters Hall, Manhattan, KS 66506 USA

2.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing, Peoples R China

3.China Agr Univ, Dept Entomol, Beijing, Peoples R China

4.Kansas State Univ, Dept Entomol, 123 Waters Hall, Manhattan, KS USA

关键词： clathrin-dependent endocytosis; clathrin heavy chain; vacuolar H+-ATPase; adaptor protein 2; small GTPase; RNA interference; Tribolium castaneum

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 5 期

页码：

收录情况： SCI

摘要： BackgroundClathrin-dependent endocytosis is a vesicular transport process by which cells take macromolecules from the extracellular space to the intracellular space. It plays important roles in various cellular functions, but its biological significance in insect development and reproduction has not been well studied. ResultsWe characterized and functionally analyzed four major clathrin-dependent endocytic pathway genes (TcChc, TcAP50, TcVhaSFD, TcRab7) in Tribolium castaneum. RNA interference (RNAi) by injecting double-stranded RNA (dsRNA) targeting each gene at three doses (50, 100, or 200 ng per insect) in 20-day-old larvae led to 100% larval mortality. When the expressions of TcChc, TcVhaSFD, and TcRab7 were suppressed by injecting their respective dsRNAs at each dose in 1-day-old pupae, the adults that emerged from the dsRNA-injected pupae were deformed, with the absence of wing development. The deformed adults died within 2 days after eclosion. When the expression of TcAP50 was suppressed by injecting its dsRNA into 1-day-old pupae, although no apparent deformed adults were observed, all the adults died within 35 days after eclosion. In addition, when the expressions of TcChc and TcVhaSFD were suppressed by injecting their respective dsRNAs at a reduced dose (10 ng per insect) in 5-day-old pupae, the ovarian development and oocyte production in the resultant females were completely inhibited. ConclusionOur results indicate that clathrin-dependent endocytosis is essential for insect development and reproduction. The results from this study can help researchers identify potential molecular targets for developing novel strategies for insect pest management. (c) 2023 Society of Chemical Industry.

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