Recent Research Progress on MicroRNA's in Medicago Truncatula

MicroRNAs (miRNAs) are small, endogenous RNAs that play important regulatory roles in development and stress response by down-regulating gene expression post-transcriptionally. MiRNA study in Medicago truncatula is advancing quickly. This paper will introduce this field to readers from five aspects: nodulation, development of roots, response to drought, metal ions and phytohormone