Fig. 1

Phylogenetic relationships among Burkholderia species based on 16S rRNA gene sequences, determined using maximum likelihood analysis. Bar Number of expected substitutions per site under the GTR + G model. The 16S rRNA gene sequences were taken from their original publication or from the Taxonomy Browser. PBE Plant-associated beneficial and environmental species. Caballeronia and Paraburkholderia were previously proposed to define Burkholderia group A as a new genus. A list of Burkholderia species from Group A and Group B is given in ESM Table 3