Figure 9. Final version of wild-type corolla model and exploration of mutant forms.

(A) Modified PRN incorporating effect of CYC and DICH on DISTORG. For detailed implementation, see Model 7 in Text S1B. (B–D) Mature canvas generated by model incorporating changes in (A), shown in oblique view (B), longitudinal section (C), and face view (D). (E–G) Flattened ventral (E), lateral (F), and dorsal (G) petals from wild-type model shown in (B–D). (H–I) Mature (day 24) canvas from model shown in (B–D), in which CYC and DICH are inactive (H, compare to cyc dich mutant Figure 5A), or in which CYC, DICH, and DIV are inactive (I, compare to cyc dich div mutant in Figure 4A). (J) Mature (day 24) canvas from a genotype lacking CYC, DICH, and DIV based on a modified model in which CENORG has weak activity in the absence of DIV. Note that there are now invaginations at the petal junctions (cyan areas), similar to those seen in Figure 4A. For detailed implementation, see Model 8 in Text S1B. (K) Ellipse patterns on a computationally flattened petal lobe from (J) (ellipses originated as circles on day 14). All scale bars are 5 mm.