Figure 5.

Alleviation of Mg on Al toxicity in OsMGT1 knockout lines. A and B, Alleviative effect on Al toxicity by low (A) and high concentrations (B) of Mg. Seedlings of wild-type and two OsMGT1 knockout lines were exposed to a solution containing 50 μm Al in the presence of different concentrations of Mg for 24 h. The root length was measured before and after the treatment and elongation relative to the root growth without Al was shown. Data are means ± sd (n = 10). C, Alleviation of Al toxicity in OsMGT1 knockout lines by divalent metals. Seedlings of wild-type and knockout lines were exposed to a solution containing 50 μm Al with 10 μm of Mg, Ba, or Sr for 24 h. Data are means ± sd (n = 10). Means with different letters are significantly different (P < 0.05 by Tukey’s test).