中文摘要：

色泽是影响植物外观品质及其商品价值的重因素,目前关于植物色泽的研究主集中于生理生化及转录水平上,而在转录后水平上报道较少。microRNA（miRNA）是一类在真核生物中广泛存在的非编码单链RNA分子,它可以通过对靶标mRNA的互补配对而降解或抑制m RNA的翻译,从而在转录后水平上对基因的表达进行负调控。简述了miRNA的作用机理,并对近几年miRNA在植物色泽调控中的研究进展进行了综述,以期为植物色泽在转录后水平上的调控奠定基础。

英文摘要：

Color is an important factor that influences the appearance quality of plants and their commodity value. Current studies on plant color are mainly focused on the physiological, biochemical and transcription level, while the post-transcrip-tional level is rarely reported. MicroRNAs （miRNAs） are short regulatory non-coding RNAs that guide gene silencing in most eukaryotes. They regulate gene expression by triggering sequence-specific cleavage or translational repression of target tran-scripts. This review briefly describes the mechanism of miRNA, and summarizes the advances on miRNAs in plant colors regulation, which would lay the foundation for the regulation of plant color in the post-transcriptional level.