A miRNA-Encoded Small Peptide, vvi-miPEP171d1, Regulates Adventitious Root Formation.

One of the biggest challenges in clonal propagation of grapevine () is difficulty of rooting. Adventitious root initiation and development are the critical steps in the cutting and layering process of grapevine, but the molecular mechanism of these processes remains unclear. Previous reports have found that microRNA (miRNA)-encoded peptides (miPEPs) can regulate plant root development by increasing the transcription of their corresponding primary miRNA.