Figure 3.

Phototropin-Mediated Growth Enhancement.

(A), (C), and (D) Fresh weight of green tissues of the wild type and mutants. Wild-type, phot1-5, phot2-1, and phot1-5 phot2-1 plants were grown for 4 weeks under red light (RL) (25 μmol m⁻² s⁻¹) with or without blue light (BL) (0.1 μmol m⁻² s⁻¹) (A), red light (25 μmol m⁻² s⁻¹) with or without blue light (1 μmol m⁻² s⁻¹) (C), and red light (70 μmol m⁻² s⁻¹) with or without blue light (0.1 μmol m⁻² s⁻¹) (D). Bars represent means ± se (n = 24). Asterisks indicate significant differences in fresh weights between red light and red light with blue light (P < 0.01).

(B) Five- to six-week-old wild-type and mutant plants grown under the same conditions as in Figure 3A.