Figure 7.

Effect of BHA on the aluminum-induced callose production in pea roots. Pea seedlings were treated with aluminum concentrations of 0, 5, 10, and 15 μm, in the presence or absence of 20 μm BHA in 100 μm CaCl₂ (pH 4.75) for 24 h. Then, a 10-mm section of the root apex was analyzed for callose content as described in “Materials and Methods.” All data show the means ± se of a total of four replicates (each replicate comprising two 10-mm root apices) from two independent experiments.