FIGURE 4.

The expression of OsNPF7.3 is enhanced in the parenchyma and vascular bundle cells. Longitudinal (A) and transverse (B–I) section analysis of pOsNPF7.3-GUS plant with GUS staining. GUS staining revealed that OsNPF7.3 is expressed in root parenchyma cells (A), root procambia (B), and root vascular bundles (C), leaf vascular bundles (D), glume epidermis (E), and stem vascular bundles (F,G). Ammonium nitrate treatment (H), and peptone treatment (I). Bars = 20 μm (B,G), 50 μm (C–F,H,I), 500 μm (A).