文献类型： 外文期刊
作者： Zhang, Yuting 1 ; Xing, Zhiping 1 ; Dong, Hui 1 ; Lu, Tao 1 ; Deng, Yuping 1 ; Li, Zhipeng 1 ; Hu, Bo 1 ; Tan, Anjiang 1 ;
作者机构： 1.Jiangsu Univ Sci & Technol, Sch Biotechnol, Jiangsu Key Lab Sericultural & Anim Biotechnol, Zhenjiang 212100, Jiangsu, Peoples R China
2.Chinese Acad Agr Sci, Sericultural Sci Res Ctr, Key Lab Silkworm & Mulberry Genet Improvement, Minist Agr & Rural Affairs Peoples Republ China, Zhenjiang, Jiangsu, Peoples R China
关键词：
期刊名称：INSECT SCIENCE （ 影响因子：3.0； 五年影响因子：3.5 ）
ISSN： 1672-9609
年卷期： 2025 年
页码：
收录情况： SCI
摘要： Synaptic vesicle glycoprotein 2B (SV2B) gene plays a crucial role in neuromodulation and neurotransmission and is a key regulator of synaptotagmin trafficking. However, physiological functions of this gene in insects remain poorly understood. In this study, we investigated the function of the BmSV2B gene in growth and development of silkworms. Tissue expression profiling revealed that BmSV2B is highly expressed in head and midgut. A phylogenetic tree and sequence alignment demonstrated that this gene is highly conserved among lepidopteran insects. Knockout of BmSV2B using the clustered regularly interspaced small palindromic repeats (CRISPR) / CRISPR-associated nuclease 9 (Cas9) system resulted in smaller body size compared to the wild type (WT) strain. In the BmSV2B mutants, the levels of triacylglycerol were dramatically lower than that in WT. Furthermore, we found that deletion of BmSV2B extended the developmental time of larvae and led to early larval death. High-throughput RNA sequencing and quantitative real-time polymerase chain reaction analysis showed that the expression levels of juvenile hormone-degrading genes, digestive genes, 20-hydroxyecdysone -response genes and forkhead box O (FOXO) were significantly affected by the absence of BmSV2B. Taken together, BmSV2B is essential for early larval development in silkworms and could serve as a potential target for insecticides, offering a more effective approach to pest control management.
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