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The expression of PHYA is coupled to the circadian clock. Seedlings were grown for 7 d under 12-h light/12-h dark cycles the luminescence rhythms were then assayed under constant. A, Expression patterns of PHYA (black triangles) and CAB (white triangles) under constant RL. B, Expression patterns of PHYA (black triangles) and CAB (white triangles) in constant darkness. The values for PHYA:LUC luminescence have been divided by 4.
