Production of ARs by different <i>A</i>. <i>vinelandii</i> mutants.

<p>(<b>A</b>) Staining with Fast Blue B of the ARs produced by colonies of <i>A</i>. <i>vinelandii</i> strain SW136 (Wild type), and its mutant derivatives inactivated in the genes <i>gacA</i>, <i>rsmZ1</i>, <i>rsmA</i> (strains SW5, SW13 and SW11) and the double mutant <i>gacA</i>-<i>rsmA</i> (SW15). The colonies were grown on Burk-Butanol (encystment induction medium) for 5 days prior to staining. (<b>B</b>). Quantification of the ARs produced by the mutants under the same conditions. The data represent the mean of triplicates and the error bars represent the standard deviations. Asterisks indicate statistical significance (unpaired Student's <i>t</i>-test) in the comparison of each mutant versus the wild type strain, *P < 0.05.