<p>All <i>NCR</i>s with “present” calls between the two treatments plotted were used to generate the scatter plots. Linear regression plots with a significant correlation (R<sup>2</sup>) are shown. A, Comparison between nodules induced by <i>exoY</i> at 14 dpi and Sm1021 at 3 dpi. B, Comparison between nodules induced by <i>bacA</i> at 14 dpi and Sm1021 at 7 dpi. C, Comparison between nodules induced by <i>nifH</i> at 14 dpi and Sm1021 at 14 dpi.</p