Fig 5. Effects of high salinity stress on the MDA, H₂O₂ and proline concentrations and APX, GPX, CAT and SOD activities in plants.

Four-week-old wild-type, atapx6 mutant, atapx6/35S:TsApx6-GFP and 35S:TsApx6-GFP plants were treated with 300 mM NaCl and the leaves were harvested after 3 d of the treatment. A significant difference (P < 0.05) among the genotypes was shown by different letters (a–d). There was no statistic difference among the groups that are not marked with letters. All data were shown as the means ± SD from three biological replicates (n = 30).