SHORT VEGETATIVE PHASE LIKE Modulates Short Day-Induced Growth Cessation in Populus Trees

Downregulation of FT2 in the leaf is necessary for SD-induced growth cessation. So far, FT2 regulation is mostly understood through promotors, but the speed of FT2 decrease in SD suggests influence of repressors in addition to reduced induction.Previously, we have identified PIF8 as a negative regulator of FT2. Here, we show that the previously described SHORT VEGETATIVE LIKE (SVL) is not only involved in dormancy establishment in the apex, but also plays a role in growth cessation by repressing FT2 and gibberellin biosynthesis.