Fig. 8.

Content of (A) total ascorbate [ASC + dehydroascorbate (DHA)] and (B) DHA, (C) total glutathione [GSH + oxidized glutathione (GSSG)] and (D) GSSG in GFP and Trxo1 lines of tobacco BY-2 cells, non-treated (NT) and treated (T) with 35 mm H₂O₂. Values represent mean ± s.e. of three experiments. Means for each non-treated sample that do not have common letter are significantly different by Tukey’s test at P < 0·05. *, **, *** indicate differences between non-treated and H₂O₂-treated sample that are significant at the 5, 1 and 0·1 % level, respectively