RNA gel-blot time course analyses of selected HL-induced genes. Twenty micrograms of total RNA isolated from Arabidopsis leaf exposed to 0, 10, 60, and 120 min of HL (1,000 μmol photons m−2 s−1), methyl viologen (MV), or 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU; D) was probed with: APX1, APX2, GST6, long hypocotyl 5 (HY5), putative small HSP (put. sHSP), and HSP70-3. rRNA, Ethidium bromide-stained ribosomal RNA.