Fig. 2. CEPDL2 regulates both high-affinity uptake and root-to-shoot transport of nitrate.

a Heatmap showing signal intensities of differentially expressed genes in three replicates each of 10-day-old WT and CEPDL2ox plant roots. b Nitrate transporter genes upregulated in roots of CEPDL2ox plants (n = 3). c Nitrate uptake activity of 10-day-old WT and CEPDL2ox plant roots, as determined by ¹⁵NO₃^– influx at 0.2 mM and 10 mM (n = 4). d Nitrate content in shoots and roots of 16-day-old WT and CEPDL2ox plants (n = 5).