Relative HAK5 expression levels in WT and in ahk2ahk3, IPT3-ox and ipt1,3,5,7 under +K and -K conditions.

The fold changes of HAK5 expression were compared to K-sufficient-grown WT. The actin gene was used as internal control. Data represent the means and SE values of four independent biological replicates. Different letters indicate the statistically different datasets from One-way ANOVA. Experiments were repeated four times using four different biological samples. Each biological sample was harvested from three different plants.