“…Recent studies have shown that miR156 accumulation reaches the highest level in seedlings, then decreases gradually as the plant develops, resulting in a gradual increase in target SPL transcripts in a number of herbaceous and woody species (Wu and Poethig, 2006;Chuck et al, 2007;Wang et al, 2009Wang et al, , 2011Wu et al, 2009;Tanaka et al, 2011;Yoshikawa et al, 2013;Hudson et al, 2014). Plants constitutively overexpressing miR156 share common phenotypes in several species, for example, a prolonged juvenile phase, accelerated leaf initiation and delayed flowering (Schwab et al, 2005;Wu and Poethig, 2006;Xie et al, 2006Xie et al, , 2012Zhang et al, 2011;Chuck et al, 2011). Conversely, plants with endogenous miR156 function disrupted by mimicry targets or by T-DNA insertions exhibit opposite phenotypes, e.g.…”