Figure 7.

Expression Patterns of the BC1 Gene Revealed by in Situ Hybridization in Transverse Sections of Wild-Type Rice Plants.

(A) Young stem and leaf sheath.

(B) A magnified section from (A), showing the strong expression of BC1 in the developing vascular bundles.

(C) Leaves and leaf sheath, showing the intense expression of BC1 in young leaves and sheaths.

(D) A magnified section from (C), showing strong signals in the developing vascular and other mechanical tissues.

(E) Tiller bud, showing strong signals in vascular bundles.

(F) Mature vascular bundles, showing the sharply decreased expression level of BC1 compared with that shown in (E).

(G) Background control, in situ hybridization of a young leaf sheath with a sense probe.

L, leaf; Ls, leaf sheath; P, phloem; S, stem; Sc, sclerenchyma cells; V, vascular bundles; X, xylem. Bars = 70 μm in (E) and (G), 450 μm in (A) and (C), and 35 μm in (B), (D), and (F).