FIGURE 2.

Gene expression profile in leaves of Arabidopsis cytokinin-specific UGTs during plant development (A) and after cytokinin treatment (B). YGL, Young green leaf 30 DAS; GL, green fully developed leaf; SL, senescent leaf. In the experiment where transcript level in response to exogenously applied cytokinin was analyzed, green mature fully expanded leaves (sixth and seventh) from 4 weeks old rosette were used and treated by 10 μM cytokinins for 3 days. The gene expressions are expressed as relative quantities and extrapolated relative to the GL 30 DAS (A) and mock treatment (B), respectively, given as 1.0. The values represent means of three biological replicates (three technical replicates) with standard deviations. Asterisks indicate significant differences between the controls and the samples according to unpaired Student’s t-test, ^∗P < 0.05; <LOD, below limit of detection.