White-backed planthopper (Sogatella furcifera, Hemiptera: Delphacidae) is an important migratory pest of rice. It causes severe economic losses by reducing crop production. Vg and VgR are important proteins that help in the successful reproduction of insects and have been studied in many insects. To understand the molecular mechanisms underlying the effects of insecticides on white-backed planthopper reproduction, we studied the expression profiles of SfVg, SfVg-like, and SfVgR in white-backed planthopper exposed to insecticides. SfVg and SfVgR silencing inhibited the ovarian development, number of eggs laid by, and hatching rate of white-backed planthopper. Thiamethoxam LC₁₀ significantly inhibited SfVg-like and SfVgR expression. In contrast, triazophos LC₂₅ significantly promoted SfVg, SfVg-like, and SfVgR expression and increased vitellogenin content in white-backed planthopper. These results demonstrate that insecticides can regulate the reproduction of white-backed planthopper by altering the expression of SfVg and SfVgR, thereby affecting the population density of white-backed planthopper. These findings build a foundation for improving our understanding of the molecular mechanisms underlying the effects of insecticides on the reproduction and resurgence of pests.

中文翻译：

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亚致死浓度杀虫剂通过卵黄蛋白原及其受体对白背飞虱（半翅目：飞虱科）繁殖力的影响


白背飞虱（ Sogatellafurcifera ，半翅目：飞虱科）是水稻重要的迁飞性害虫。它导致农作物减产，造成严重的经济损失。 Vg 和 VgR 是有助于昆虫成功繁殖的重要蛋白质，并已在许多昆虫中进行了研究。为了了解杀虫剂对白背飞虱繁殖影响的分子机制，我们研究了暴露于杀虫剂的白背飞虱中SfVg 、 SfVg -like和SfVgR的表达谱。 SfVg和SfVgR沉默抑制了白背飞虱的卵巢发育、产卵数量和孵化率。噻虫嗪 LC ₁₀显着抑制SfVg样和 SfVgR表达。相比之下，三唑磷LC ₂₅显着促进白背飞虱中SfVg 、 SfVg -like 和SfVgR的表达并增加卵黄原含量。这些结果表明，杀虫剂可以通过改变SfVg和SfVgR的表达来调节白背飞虱的繁殖，从而影响白背飞虱的种群密度。这些发现为提高我们对杀虫剂对害虫繁殖和复活影响的分子机制的理解奠定了基础。