FIGURE 7.

Changes in ROS levels and antioxidant enzyme activities of plants of PgTIP1-transgenic soybean lines and WT under NaCl treatment. The plants of WT and PgTIP1 transgenic soybean lines N and J11 were cultured and NaCl-treated as above-mentioned in Figure 4. After 7 d treatment, the roots and the 1st pair of unifoliolate leaves were sampled for measuring (A) H₂O₂ content, (B) ${\mathrm{O}}_{\mathrm{2}}^{\mathrm{•}\mathrm{-}}$ producing rate, activities of (C) SOD, (D) POD, (E) CAT, and (F) APX. Each bar represents the mean and SD of three replicates, means in bars followed by different letters show significant difference (P < 0.05) between the parameters of WT and PgTIP1-transgenic lines.