Phylogenetic relationship of studied strains.

<p>Maximum parsimony tree using 1,713 bases in the dataset computed with PAUP* and rooted using Dugway (bold) as outgroup. Plasmid type, genomic group (GG), <i>adaA</i> types and the subgroups of the Q154-deletion type are shown next to the tree. Branch lengths correspond to the number of mutations. Animal strains are written in italic. IP: integrated plasmid; WT: wildtype; D_2.1: deletion 2.1; D₁: deletion 1. The figure was drawn using APE <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053440#pone.0053440-Paradis1" target="_blank">[38]</a>.