IAA-degrading bacterial strains restore the RGI-induced by exogenous IAA in rice seedlings.

<p>(A) Exogenous IAA induced RGI was suppressed by some of the IAA-degrading strains. Boxplot middle line, median log<sub>2</sub><sup>fold change of primary root elongation (vs. NB)</sup>; box edges, 25th and 75th percentiles; whiskers, from the minimum to the maximum value. Each point represents a biological replicate, with 4 to 6 replicates were used in this experiment. (B) The images of rice seedlings grown on half strength MS agar plate supplemented with 10 μm IAA at 3 days after inoculation with or without bacteria. Red arrows indicate the original positions of the root tips at the time of bacterial inoculation. NB, No bacterial inoculation. Significant differences compared with NB group were determined using Student’s <i>t</i> test: *<i>P</i> < 0.05, **<i>P</i> < 0.01, ***<i>P</i> < 0.001. Numerical values that underlie the data displayed in the plot are in <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.3002921#pbio.3002921.s021" target="_blank">S6 Table</a>.</p> <p>(PDF)</p>