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Hypocotyl phototropism of WT and mutant seedlings. (A,B) Three-day-old etiolated WT and mutant seedlings were irradiated with blue light at (A) 0.01 μmol m−2 s−1 or (B) 100 μmol m−2 s−1 for 12 h. (C) Hypocotyl curvatures of seedlings in panels (A,B). Each bar represents an average of three experiments (15–20 measurements per experiment) ± SD. ∗P < 0.05.
