RNA沉默—新型的植物病毒病害防治策略

基金项目: 山西农业大学优秀人才引进基金项目和山西农业大学博士启动基金项目

RNA silencing—a new strategy for the control of virus diseases in plants

摘要: 植物RNA沉默(RNA silencing)是植物本身固有的一种抗病毒防御系统，是对病毒在复制过程中形成双链RNA(dsRNA)的特殊反应。RNA沉默介导的 dsRNA干涉病毒侵染转基因抗病毒有其不足，几种体外生产dsRNA的抗病毒体系能弥补这一不足，它们与转基因表达病原RNA不同，但仍然依赖RNA沉默机制来获取病原抗性。综述了近年来发展起来的各种启动RNA沉默的dsRNA产生策略、抗病状况和存在的问题及发展前景。
- RNA沉默 /
- 双链RNA /
- 抗病毒
Abstract: RNA silencing occurs in plants is conceived as a natural antiviral defense system that is activated as a response to double-stranded RNA (dsRNA) formed during virus replication.To compensate for the disadvantages on RNA silencing by using dsRNA to specifically interfere with virus infection in transgenic plants,several approaches of obtaining dsRNA used for virus-resistance have been developed which differ from strategies based on transgenic expression of RNAs but still rely on RNA silencing as a means to achieve pathogen-derived resistance (PDR).In this paper,the dsRNA produce strategies for RNA silencing,their applications for virus resistance,disadvantages and perspectives are reviewed.
- RNA silencing /
- Double-stranded RNA /
- Virus resistance

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