植物非细胞自主性RNAi及其应用研究进展

Research Progress of Non-cell-autonomous RNAi and Its Application in Plants

非细胞自主性RNAi是发生于那些非应用或非产生dsRNA的细胞或组织中的RNAi,包括系统性RNAi和环境RNAi。系统性RNAi是沉默现象从一个细胞扩散到另一个细胞或从一个组织扩散到另一个组织的过程,环境RNAi是细胞从环境中吸收dsRNA而触发的RNAi。近年来,植物非细胞自主性RNAi研究取得了较大进展,就其机制及应用进行了评述,首次提出在植物中也有环境RNAi存在。

Non-cell-autonomous RNAi takes place in the cell or tissue in which dsRNA is not applied or self-generated, including systemic RNAi and environmental RNAi. Systemic RNAi is that RNA silencing can spread from cell to cell or spread from one tissue to another tissue. In ad-dition,cells can take up dsRNA from the environment and trigger RNAi which is named environ-mental RNAi. In recent years, the research of non-cell-autonomous RNAi in plants has made great progress. The mechanism of non-cell-autonomous RNAi and its application in plants are reviewed in this paper. To our knowledge, we proclaim that environmental RNAi occurs in plants for the first time.