Comparison of primary root length and lateral root density between wild type and <i>GhERF12</i> transgenic <i>Arabidopsis</i> seedlings on MS medium with different concentrations of IAA.

<p>The seedlings were cultured on MS medium without or with various concentrations (10, 20, 30, 50 and 100 nM) of indole acetic acid (IAA) at 22 °C (16 h light/8 h dark) for 8 days. (<b>A</b>) Measurement and statistic analysis of primary root length of wild type and <i>GhERF12</i> transgenic <i>Arabidopsis</i> seedlings. (<b>B</b>) Measurement and statistic analysis of lateral root density (number of lateral roots/cm primary root) of wild type and <i>GhERF12</i> transgenic <i>Arabidopsis</i> seedlings. The experiments were repeated three times, and error bars represent standard deviation. WT, wild type; L3, L4, L10 and L12, four <i>GhERF12</i> transgenic lines.