Figure 2.
Measurements of Na and K concentrations using O/E and wildtype lines (WT) plants, which were subjected to salt stress. Plants were prepared by hydroponic culture, and 3 to 4-week-old plants were treated with 50 mM NaCl for 24 h. (a) Na concentrations in leaves, basal stems and roots; (b) K concentrations in the same tissues as in (a). LB, LS, BS and R represent, respectively, leaf blades, leaf sheaths, basal stems and roots. Larger numbers on LB and LS represent younger leaves. Asterisks indicate significant differences between O/E and WT plants (Student’s t-test: * p < 0.05, ** p < 0.01; n = 4, ±SD).