Relative gene expression levels of <i>GmARI1</i> in the roots of soybean after exogenous application of plant hormones.

<p><b>A</b>. 100 µM ABA treatment <b>B</b>. 100 µM IAA treatment <b>C</b>. 100 µM JA treatment <b>D</b>. 150 µM SA treatment. Error bars represent the standard error of three replicates.