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. 2008 Jul;74(13):4236–4240. doi: 10.1128/AEM.00022-08

FIG. 1.

FIG. 1.

Maximum likelihood phylogeny. (A) B. aphidicola 16S rRNA gene. The outgroups are B. aphidicola from Acyrthosiphon pisum and from Schizaphis graminum (GenBank accession numbers M27039 and NC_004061, respectively). (B) “Ca. Serratia symbiotica” 16S rRNA gene. Free-living bacteria are Serratia plymuthica (AY394724), Serratia marcescens (AF124038), and the outgroups Escherichia coli (AB045731) and Serratia boydii (AY696681). (C) Gene atpD from some selected “Ca. Serratia symbiotica” spp. Free-living bacteria are S. marcescens (ABI21950) and the outgroups Erwinia carotovora (IP_052595) and Yersinia pseudotuberculosis (BX936398). Numbers in nodes indicate support values in the form of proportions of bootstrap pseudoreplicates and Bayesian a posteriori probabilities for the corresponding inner branch. Branches with support values higher than 55% are collapsed. See Table 1 for species information.