Figure 7. Relative salt tolerance of wild type (WT) and transgenic plants with OsAPx2 overexpression in Medicago sativa (T#1 and T#5) under salt stress.

A: WT and transgenic seeds germinated in 1/2 ·MS solid medium agar plates for 1 week. B, C, D: WT and transgenic seeds germinated in 1/2 MS with 125, 150, and 175 mM NaCl. E: Effects of salt on the root lengths of the WT and transgenic plants overexpressing the OsAPx2 gene. The figure shows the root lengths of the WT and two transgenic lines (T#1 and T#5) after 1 week of salt treatment. This shows that the root lengths of the transgenic plants are longer than those of the WT plants. Data on the profile E note mean ±SD (n = 20). F: Analysis of the content of H₂O₂ via DAB shows that the WT has higher content than the transgenic type.