Individual and concatenated maximum likelihood trees.

<p>All of the trees were constructed in Mega 5.01 for a) <i>adk</i>, b) <i>recA</i>, c) <i>gyrB</i>, d) <i>icd</i>, e) <i>purA</i>, f) <i>aph</i>, g) <i>gnd</i>, h) <i>mdh</i> and i) concatenated genes. The assigned names of the genus in which these alleles occur are shown. The scale bar represents the number of substitutions per site.