Fig. 2: Population structure of Pseudomonas aeruginosa contaminating drinking water networks in France.
From: High-risk clones of Pseudomonas aeruginosa contaminate the drinking water networks of French cities
a shows the distribution of the STs of the Pseudomonas aeruginosa strains isolated from hospital and community drinking water networks (blue squares) on an unrooted tree built using the data of all known STs of P. aeruginosa (n = 753) and cgMLST data (3786 genes). The scale bar indicates the genetic distance in number of substitutions per site. The green squares represent the ST of reference strains PAO1, PA7, and PA14. Strain PA7 now belongs to the species Pseudomonas paraeruginosa and is no longer classified as P. aeruginosa39. Scale bar refers to a phylogenetic distance of 0.01 nucleotide substitutions per site. b is the distribution of Pseudomonas aeruginosa ST308 isolated in hospital and community drinking water networks on a phylogenetic tree built from all 95 genomes of ST308 isolates deposited at the NCBI by April 5, 2021, based on the wgMLST of ST308 (2937 genes). The scale is the length of branch that represents 0.00001 nucleotide substitutions per site. The color of the outer circle indicates the origin of the isolates (red for human, blue for environment, green for unknown origin). c is the minimum spanning tree (built from wgMLST distances) that grouped the P. aeruginosa ST308 strains isolated from the drinking water networks in France.
