Figure 3

Effects of exogenous BL on the primary root length and lateral root number of wild type (WT) and mtbri1 seedlings. (a) Germinated wild type seeds were grown on ½ MS media supplemented with 0, 0.005, 0.01, 0.05, 0.1, 1.0, 10, or 50 nM BL for 7 days (one representative plant is shown for each concentration); (b) The primary root length and the lateral root number of wild type seedlings grown on the media with a series concentration of BL. Error bars represent the standard error of the means (n ≥ 20). Means with different letters are significantly different (P < 0.005; Tukey’s test). (c) mtbri1-1 and wild type-like (WTL) seedlings grown on ½ MS media supplemented with 0, 1.0, 10, or 100 nM BL for 7 days; (d) Comparison of the primary root length and lateral root number in mtbri1-1 and wild type-like seedlings grown on ½ MS media with 0 and 10 nM BL for 7 days. Error bars represent the standard error of the means (n ≥ 20). Means with different letters are significantly different (P < 0.005; Tukey’s test). Scale bars: 20 mm.