Figure 3.

SMP2 genetically acts downstream of phyB. (A) Visual phenotypes of wild-type (Col-0), smp2-1, smp2-3, phyB-9, smp2-1 phyB-9, and smp2-3 phyB-9 seedlings grown for 5 days in continuous red-light condition (145 μmol·m⁻²·s⁻¹). Scale bars, 5 mm. (B) Quantification of hypocotyl length of different seedlings as shown in (A). Error bars represent SD, n ≥ 25. Letters above the bars indicate significant differences (P < 0.05), as determined by one-way analysis of variance (ANOVA) with Duncan's post-hoc analysis. Experiments were performed three times with similar results.