Figure 3.

KO of OsNIT1 or OsNIT2 decreases root growth sensitivity to IAN, but not to NAA. A, Seeds were first germinated in deionized water for 3 d, then were transferred to the hydroponic media containing 0.125 mm Ca(NO₃)₂ with 10 μm IAN or 0.1 μm NAA for another 7 d before being photographed and sampled for the measurement of root growth and LR density. The genotypes are the same as those used and described in Figure 2A. The data in (B) and (C) represent means ± se of six biological replicates (^*P ≤ 0.05 and ^**P ≤ 0.01); ns, not significant; WT, wild type.