Figure 7. Effects of alkali stress on the expression (relative units) of OsAMT and OsNRT gene families in young and old leaves of rice seedlings.

The values are means (± SE) of four biological replicates, and each replicate consisted of a pool of 10 plants. Statistically significant between organs at same stress condition was determined by t-test, and marked as * (P<0.05) and ** (P<0.01). The seedlings were subjected to 50 mM alkali stress (NaHCO₃∶Na₂CO₃ = 9∶1; pH 9.10) stresses for 6d.