The effect of aluminum treatments on the root growth and cell ultrastructure of two soybean genotypes

► We study two soybean cultivars which have different sensitivities to Al toxicity. ► We examine changes in the level of root physiology and cell ultrastructure. ► Al inhibited the growth of soybean root systems and severely damaged root cells. ► The root elongation, activity, appearance of root tips and root hair zone were all altered by Al treatments.