Expression of luciferases using promoters P<i>_hsp60</i> and P_G13 leads to greater light production.

<p>Luminescence of <i>M. smegmatis</i> expressing <i>ffluc</i> (<b>a</b>), <i>gluc</i> (<b>b</b>) and <i>lux</i> (<b>c</b>) was assayed using P<i>_hsp60</i>, P<i>_myc</i>tetO, and P_G13 in the integrating vector pMV306. Each dot represents a randomly selected transformant. Results are given as relative light units (RLUs) and are corrected for the background. Statistical significance was evaluated by the Kruskal–Wallis test with subgroup analysis performed by Dunn's multiple comparison test and those found to be significant (p&lt;0.05) are indicated with *.