数字农科院2.0

Double-Stranded Rna Targeting Vatpase B Reveals A Potential Target For Pest Management Of Henosepilachna Vigintioctopunctata

文献类型： 外文期刊

作者： Lu, J; Guo, MJ; Chen, SM; Noland, JE; Guo, W; Sang, W; Qi, YX; Qiu, BL; Zhang, YJ; Yang, CX; Pan, HP

作者机构：

关键词： Henosepilachna Vigintioctopunctata; Dietary Rnai; Vatpase B; Mortality; Melanism

期刊名称： PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY

ISSN： 0048-3575

年卷期： 2020 年 165 卷

页码：

收录情况： JCR（2021版）

摘要： The development of genetic based techniques, specifically RNA interference (RNAi), has emerged as a powerful tool in novel pest management strategies for pestiferous coleoptera. The 28-spotted ladybird beetle, Henosepilachna vigintioctopunctata, is a dynamic foliar pest of solenaceous plants, primarily potato plants, and has quickly become one of the most important pests attacking many crops in Asian countries. In this study, we demonstrate the efficacy of dietary RNAi targeting vATPase B, which led to significant gene silencing. Downstream effects of vATPase B silencing appeared to be both time- and partial dose-dependent. Our results indicate that silencing of vATPase B caused a significant decrease in survival rate, as well as reduced the food stuffs consumption and inhibited the overall development of H. vigintioctopunctata. Furthermore, results demonstrate expression of insect melanism related genes, TH and DDC, was significantly up regulated under the dsvATPase B (RNAi molecule designed against vATPase B) treatment. The impact of oral dsvATPase B delivery on the survival of 1st, 3rd instars, and adults was investigated through bacterially expressed dsRNA. The effectiveness of RNAi-based gene silencing in H. vigintioctopunctata provides a powerful reverse genetic tool for the functional annotation of its genes. This study demonstrates that vATPase B may represent a candidate gene for RNAi-based control of H. vigintioctopunctata.

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