Figure 4.
A, Growth of ALS3-KO, AtALMT1-KO, and STOP1-KO in neutral forest brown soil (bottom) and acidic andosol (top). Seedlings were grown for 4 weeks on both soil types. Acidic andosol was neutralized by adding various amounts of CaCO3. Soil pH and amount of exchangeable Al were determined. WT, wild type. White bar = 1 cm. B, Fresh weight of the shoots plotted as means ± se (n > 4). Different letters indicate significant differences at P = 0.05 by lsd test. [See online article for color version of this figure.]