U.C. Berkeley, Department of Plant and Microbial Biology, Berkeley, CA 94720, United States.
Curr Opin Plant Biol. 2010 Feb;13(1):40-5. doi: 10.1016/j.pbi.2009.08.006. Epub 2009 Sep 30.
Small RNAs are 19-27 nucleotide long RNAs that negatively regulate gene expression and function as important regulators of diverse aspects of plant development. Current models for how they function continue to be modified as new research uncovers additional aspects of their biology. Unexpectedly, several previously characterized small RNAs appear to function non-cell autonomously, some moving a few cells away, others moving throughout the plant. This fact may reflect that small RNAs are an essential component of a larger signaling network that orchestrates plant development.
小 RNA 是长度为 19-27 个核苷酸的 RNA，可负向调控基因表达，并作为植物发育多方面的重要调控因子发挥作用。随着新研究揭示了它们生物学的其他方面，当前关于它们功能的模型不断被修改。出人意料的是，一些先前被表征的小 RNA 似乎表现出非细胞自主性，有些可以移动几个细胞，而有些则可以在整个植物中移动。这一事实可能反映了小 RNA 是一个更大信号网络的重要组成部分，该网络协调植物发育。
