Figure 3From: Transcriptional responses to polycyclic aromatic hydrocarbon-induced stress in Arabidopsis thalianareveal the involvement of hormone and defense signaling pathways Ethylene reporter gene expression in plants treated with phenanthrene and grown in long day light. Histochemical staining of GUS activity in CH5B::GUS (A, B), AtGSTF2::GUS (C, D) transgenic Arabidopsis plants in absence (A, C) or presence (B, D) of phenanthrene. Plants were grown in long days for 14 d. Seedlings were stained for 15 h for GUS activity in staining buffer containing 2 mM 5-bromo-4-chloro-3-indolyl-b-D-glucuronide. Scale bars 1 mm.Back to article page