Figure 6.

Schematic Representation of the SHL2 (ROL) Gene and Its Encoded Protein, and Spatial Expression Pattern of SHL2.

(A) The SHL2 gene. Boxes indicate coding regions. Arrowhead indicates the mutation site in the shl2-rol mutant. The red bar shows the 8.6-kb genomic fragment used for the complementation test. This fragment contains a promoter of ∼1.5 kb.

(B) Schematic representation of the SHL2 protein. Arrowhead indicates the amino acid substitution in the shl2-rol mutant. The blue box indicates the conserved RdRP domain.

(C) and (D) Spatial expression pattern of SHL2 in the spikelet. Bars = 50 μm. ca, carpel; le, lemma; pa, palea; st, stamen.