Figure 6.

Histochemical localization of proPIN2::GUS and OsPIN2 expression in rice plants. Rice seedlings were grown in hydroponic media containing ${\mathrm{NH}}_4^{+}$, ${\mathrm{NO}}_3^{-}$, and ${\mathrm{NH}}_4^{+}$ + GR24 for 10 d. (A) Localization of proPIN2::GUS; Bar = 0.5 mm. (B) OsPIN2 expression in WT and d14 mutant under ${\mathrm{NH}}_4^{+}$ and ${\mathrm{NO}}_3^{-}$; (C) OsPIN2 expression in WT under ${\mathrm{NH}}_4^{+}$, ${\mathrm{NO}}_3^{-}$, and ${\mathrm{NH}}_4^{+}$ +GR24 conditions. Data are means ± SE, and bars with different letters indicate significant difference between treatments at p < 0.05.