Figure 7.

Assays of redox couples and reactive oxygen species (ROS) in the wild‐type (WT) and transgenic plants under 50 mm NaCl and 8 °C treatments. (a) The contents of the reduced form of NADH and the oxidized form of NAD ⁺, as well as the ratio of NADH/NAD ⁺. (b–d) The contents of the reduced form of redox couples (NADPH, AsA and GSH) and the oxidized form of redox couples (NADP ⁺, DHA and GSSG). (e) The ratios of the reduced and oxidative forms of redox couples. (f) The contents of ${\mathrm{O}}_2^{·-}$ and H₂O₂. Data are presented as means ± SD (n = 3). *Significant difference, P < 0.05; **highly significant difference, P < 0.01. The analysis of the significant difference was performed between the transgenic lines and WT plants at the same treatment point.