生物
RNA干扰
核糖核酸
RNA沉默
DNA定向RNA干扰
植物病毒
病毒学
小RNA
基因沉默
小干扰RNA
病毒
细胞生物学
基因
遗传学
作者
Yipeng Jin,Jinyan Zhao,Hui‐Shan Guo
标识
DOI:10.1016/j.coviro.2020.12.001
摘要
Molecular plant-virus interactions provide an excellent model to understanding host antiviral immunity and viral counter-defense mechanisms. The primary antiviral defense is triggered inside the infected plant cell by virus-derived small-interfering RNAs, which guide homology-dependent RNA interference (RNAi) and/or RNA-directed DNA methylation (RdDM) to target RNA and DNA viruses. In counter-defense, plant viruses have independently evolved viral suppressors of RNAi (VSRs) to specifically antagonize antiviral RNAi. Recent studies have shown that plant antiviral responses are regulated by endogenous small silencing RNAs, RNA decay and autophagy and that some known VSRs of plant RNA and DNA viruses also target these newly recognized defense responses to promote infection. This review focuses on these recent advances that have revealed multilayered regulation of plant-virus interactions.
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