(A) GUS staining images of 3-day old etiolated seedlings of 5XEBS-GUS in Col-0, EIN3ox and EIN3ox/cop1-4 backgrounds.
(B-F) qRT-PCR results showing the gene expressions of ERF1 (B), EBF2 (C), PIF3 (D), Lhcb1b1 (E) and Lhcb1b2 (F) in 4-day old dark-grown seedlings. The expressions were normalized to PP2A. Mean ±s.d., n=3.