Molecular Characterization of the PPS Gene.
(A) PPS gene structure. White boxes, RING-FINGER domain; slanted line box, coiled-coil domain; gray box, WD-40 repeat. Mutation sites of two pps alleles are indicated by vertical arrows.
(B) Expression pattern of PPS (relative to ACTIN-1) in second to eighth wild-type leaf blades, 2-week-old wild-type shoot apex, and mori1-1 seedling. Data represent means ± sd (n = 3).