 Plants undergo a gradual decline in the level of MIR 156 and an increase in the expression of its target genes, SPL genes, during the transition from the vegetative to reproductive phase. This process is regulated by gibberellins, jesmonic acids, and cytokinins, but other phytohormones may also be involved. The mutant plant DWF5 has a delayed transition due to reduced levels of SPL9 and MIR 172, as well as increased TOE1 levels. GSK3, like kinase bin 2 then phosphorylates these two proteins, leading to their degradation and thus delaying the transition. This article was authored by Binging Du, Qingluo, Yanhuixian, and others.