Fig. 5. Spatiotemporal expression patterns of RBE in inflorescences and floral buds. (A,B) RBE expression patterns in continuous transverse sections of a wild-type inflorescence. Arrowheads indicate RBE expression in stage 3 to 6 flowers. Asterisks indicate the position of the inflorescence meristem. (C,D) RBE expression patterns in longitudinal sections of a wild-type flower at stage 3 (C) and stage 6 (D). Arrowheads indicate RBE expression. (E) Top view of RBEp::GFP expression in a transgenic plants. Arrowheads indicate GFP expression. (F) RBEp::GUS expression in a transgenic plant. Arrowheads indicate GUS expression. Note that both RBEp::GFP and RBEp::GUS plants show the same expression patterns as with in situ hybridization. se, sepal; st, stamen; ca, carpel. Scale bars: 50 µm.