Fig. 1.

(A) Maximum likelihood MLST phylogenetic tree of Coxiella and other Legionellales, and (B) maximum likelihood phylogenomic tree of Coxiellaceae. In (A, B), the four major Coxiella clades are evidenced by different colors, numbers on branches stand for bootstrap support after 1,000 pseudoreplicates, CE stands for Coxiella endosymbiont, and respective host organisms are indicated. In (A), symbionts with available genomes are highlighted. In (B), scale bar stands for estimated proportional sequence divergence, and the bar plot on the right shows the respective coding (blue) and noncoding (red) genome sizes.