Figure 4

Maximum-likelihood phylogeny based on concatenated core genome SNPs of 158 mcr-1-bearing E. coli strains. The phylogeny was inferred from a total of 93,130 single-nucleotide polymorphisms (SNPs), of which 52,636 were parsimony-informative and 40,494 were singletons. Isolates from this study are highlighted with colour shade. E. coli K12-MG1655 was used as a reference strain.