Fig. 6

Expression of genes involved in absorbing, transporting and assimilation of nitrate among WT, OE lines and sapk2 mutant lines. a-f Relative expression analysis of OsNPF7.2 (a), OsNPF7.3 (b), OsNPF5.6(c), OsNPF2.2 (d), OsNRT2.3a (e) and OsNPF2.4 (f) among WT, sapk2 mutant lines and OE lines control conditions and drought stress conditions. Data are shown as means ± SD (n = 20) from three replicates. A student’s t-test was used to generate P values; “**” indicate significance at P < 0.01