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Effect of exogenously supplied PΦB analogs to hy2 mutant seedlings. (A) The D-ring structures of PΦB analogs. Whole structures are identical to PΦB except where indicated. (B) The seedlings were irradiated with intermittent pulses of light. D (black), kept in darkness; R (red) and R/FR (gray) at 4-h cycles for 2 days. (C) The seedlings were irradiated with intermittent pulses of light. D (black), kept in darkness; FR (shade) at 3-min cycles for 2 days. Error bars represent SE.
