烟草响尾蛇病毒
桃蚜
生物
烟草
RNA干扰
蚜虫
基因
基因沉默
病毒学
遗传学
植物
核糖核酸
作者
Honglin Feng,Georg Jander
出处
期刊:PubMed
日期:2022-01-01
卷期号:2360: 105-117
被引量:1
标识
DOI:10.1007/978-1-0716-1633-8_10
摘要
Plant-mediated RNA interference (RNAi) can be used to reduce the growth of insect pests, including Myzus persicae (green peach aphid), a prolific pest of numerous dicot crop species. In one approach, viruses that have been engineered to carry an aphid gene fragment are used to infect plants and thereby silence target gene expression in the aphids feeding on these plants, a process called virus-induced gene silencing, or VIGS. Tobacco Rattle Virus (TRV) in the model plant, Nicotiana benthamiana, was the first of many VIGS systems that have been developed for different plant species. In this chapter, we describe a method for silencing M. persicae gene expression using an established TRV-VIGS vector that infects and spreads in N. benthamiana. The two parts of the TRV genome, RNA1 and RNA2, have been cloned into Agrobacterium T-DNA vectors for initiation of plant infections. The RNA2 construct is modified with a Gateway-compatible cloning site to allow insertion of aphid genes. When feeding on TRV-infected N. benthamiana plants, aphids ingest dsRNAs that silence specific target genes. TRV-VIGS of aphid genes allows rapid identification of essential gene targets that can be used for the control of M. persicae by this and other RNAi methods.
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