共生微生物对昆虫脂质代谢的影响

Effects of microbial symbionts on lipid metabolism in insects

摘要:

共生微生物与昆虫之间的相互作用对昆虫的生长、发育和繁殖具有至关重要的作用。本文重点阐述共生微生物如何通过复杂的信号通路来调控昆虫的脂质代谢。共生微生物通过多种机制影响昆虫的脂质代谢，不仅为宿主提供类固醇等脂质或脂质前体，还通过产生短链脂肪酸和激活免疫信号通路，来间接影响宿主的胰岛素信号通路，进而改变昆虫体内的脂质含量。此外，共生微生物还能通过激活雷帕霉素靶标蛋白和激脂激素信号通路来调节昆虫的脂质代谢过程。深入研究这些信号通路在不同昆虫种类中的共性与差异，对于理解昆虫的生态适应性和繁殖策略以及开发新的害虫治理策略具有重要意义。

Abstract:

Interactions between microbial symbionts and insects are essential for the growth, development, and reproduction of insects. This review focuses on how microbial symbionts regulate lipid metabolism in insects via signaling pathways. Microbial symbionts affect lipid metabolism in insects through a variety of mechanisms. Microbial symbionts provide lipids or lipid precursors such as steroids to their insect hosts. Microbial symbionts can also modulate host insulin signaling pathway by producing short-chain fatty acids or activating immune signaling pathways, thereby changing the lipid content of insects. In addition, microbial symbionts can activate target of rapamycin and adipokinetic hormone signaling pathways to regulate lipid metabolism in insects. Further research in the similarities and differences of these signaling pathways in different insect species is of great significance for comprehension of insect ecological adaptability and reproductive strategies, and development of new pest management strategies.