Fig. 3.

The methylation activity of FIONA1 positively regulates the sensitivity of red light and far-red light and cell elongation. a Representative phenotype of Col-0, fiona1-1, FIONA1:FIONA1/fiona1-1, and FIONA1:FIONA1m/fiona1-1 seedlings grown under LD, SD, Rc (30 μmol m⁻² s⁻¹), and FRc (11 μmol m⁻² s⁻¹) for 7 days. Bar = 2 mm. b Hypocotyl lengths of the seedlings shown in (a). Data are means ± SE (n ≥ 25). c Confocal microscope of hypocotyl epidermal cells of Col-0, fiona1-1, FIONA1:FIONA1/fiona1-1, and FIONA1:FIONA1m/fiona1-1 seedlings grown in LD, SD, Rc, and FRc for 7 days. The cell sizes were marked with red lines. Bar = 100 μm. d The hypocotyl epidermal cell lengths shown in (c). Data are means ± SE (n ≥ 20). ** p < 0.01, *** p < 0.001 by t test (two-tailed). ns, no significance