Regulating role of neuropeptide PTTH releaved in Spodoptera frugiperda using RNAi- and CRISPR/Cas9-based functional genomic tools
文献类型： 外文期刊
作者： Li, Jiang-Jie 1 ; Xu, Hui-Min 1 ; Zhao, Huai-Zhi 1 ; Pan, Ming-Zhen 1 ; Smagghe, Guy 2 ; Li, Zhen-Yu 3 ; Liu, Tong-Xian 1 ; Shi, Yan 1 ;
作者机构： 1.Qingdao Agr Univ, Coll Plant Hlth & Med, Key Lab Integrated Crop Pest Management Shandong P, Qingdao 266109, Shandong, Peoples R China
2.Univ Ghent, Fac Biosci Engn, Dept Plants & Crops, B-9000 Ghent, Belgium
3.Guangdong Acad Agr Sci, Inst Plant Protect, Guangzhou 510640, Peoples R China
4.Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Peoples R China
5.Guizhou Univ, Inst Entomol, Guiyang, Guizhou, Peoples R China
关键词： metamorphosis; RNA interference; genome-editing; development; prothoracicotropic hormone
期刊名称：ENTOMOLOGIA GENERALIS （ 影响因子：6.9； 五年影响因子：5.2 ）
ISSN： 0171-8177
年卷期： 2023 年 43 卷 2 期
页码：
收录情况： SCI
摘要： Neurosecretory cells in the brain produce prothoracicotropic hormone (PTTH), which is carried to the corpora allata (CA) by axons running through the brain contralateral hemisphere before being secreted into hemolymph to trig-ger production and release of ecdysone. PTTH plays an important role in insect growth and metamorphosis, and it can be exploited as a potential target for pest control. Although the function of PTTH has been described in insects, various results have been reported. In this context, the PTTH neuropeptide gene in Spodoptera frugiperda was knocked down or knocked out using RNAi and CRISPR/Cas9, respectively. The development time of larval was significantly prolonged and even death during the larval molting and pupation by knocking out PTTH. However, after silencing 4th instar, pupae's body size increased significantly, but development time was not affected. PTTH is a key gene to regulate ecdysone synthesis and release, and is necessary to coordinate the growth and developmental timing of S. frugiperda. Our study demonstrated that RNAi and CRISPR/Cas9 of PTTH could cause different outcomes and hinted the advantages of using both RNAi and CRISPR/Cas9 to analyze gene function more comprehensively (than using single technique). The gene sequence structure of PTTH has more conservative characteristics, especially between similar species, which also provides convenience for developing RNAi-based pesticides.
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