Figure 7
Root growth and H2O2 accumulation of wild type (WT) and transgenic lines (#25 and #27) under salt stress.
(a,b) Phenotype (a) and quantitative root length (b) of four-day-old seedlings of WT and transgenic plants grown on MS medium (Control, upper panel), MS + 100 mM NaCl (middle panel) and MS + 100 mM NaCl + 100 U/ml CAT (bottom panel). (c) Fluorescence of primary root tips from six-day-old seedlings of WT and transgenic lines grown in water (Control, upper panel), 200 mM NaCl (middle panel) and 200 mM NaCl + 100 U/ml CAT (bottom panel) for 4 h. (d) Quantitative analysis of fluorescence intensity in (c). AU, arbitrary units. Error bars represent standard deviations (n = 3). Asterisks indicate significant difference between WT and transgenic lines (*P < 0.05, **P < 0.01, ***P < 0.001).
