The ‘how’ and ‘where’ of plant microRNAs

Summary Micro RNA s (mi RNA s) are small non‐coding RNA s, of typically 20–24 nt, that regulate gene expression post‐transcriptionally through sequence complementarity. Since the identification of the first mi RNA , lin‐4 , in the nematode Caenorhabditis elegans in 1993, thousands of mi RNA s have been discovered in animals and plants, and their regulatory roles in numerous biological processes have been uncovered. In plants, research efforts...