Figure 7.

Enhanced alkaline tolerance in N. tabacum overexpressing AmPAL. (A) Plant phenotypes. The upper and lower panels indicated plants before and after treatment, respectively. One control and three NaHCO₃ treatment groups (50, 100, and 150 mM, respectively) were included. For each group, one WT and three transgenic plants (#1–3) were shown. (B–D): quantification of SOD, proline, and chlorophyll, respectively. Marking: The letters on the bar chart are marked for significance analysis. Where there is one same marking letter, the difference is not significant; where there is different marking letters, the difference is significant. The more different letters are, the more significant they are.