Colony expansion in wild type and biofilm-related mutants.

<p>Left: time course experiment of colony growth in WT and colony expansion in <i>srfA</i>, <i>tasA</i>, <i>eps</i>, <i>sigF</i>, and <i>hag</i> mutants, which are defective in producing surfactin, TasA, EPS, sporulation, and motility, respectively. Colonies are toothpick inoculated onto MSggN medium as described in the Materials and Methods. Right: WT colony after 70 h. The different regions of the colony are named: dendrites, petals, and rays.