Fig. 3

Temporal and spatial expression patterns of poplar DELLA genes by semi-quantitative and real-time RT-PCR. 1WR, 2WR, 3WR and 4WR are 1-, 2-, 3- and 4-week-old roots, respectively; and 4WL and 4WS are 4-week-old leaves and stems, respectively. For semi-quantitative RT-PCR, 18S was used an internal control. For real-time RT-PCR, EF1a was used as an internal control, and the relative transcript levels were calculated using the comparative Ct method. Error bars represent standard deviations for three biological replicates