Phylogenetic distribution of Pseudomonas spp. isolates (n = 325) based on partial 16S rRNA gene (288 bp) sequencing. Assignment of the isolates to presumptive species and to the strain collections is indicated. The subsets of isolates subjected to MIC (n = 175) and WGS (n = 31) analyses are shown. Isolates with resistance to the specific antibiotics are indicated in red. Antibiotic abbreviations: MERO (meropenem), IMI (imipenem), TAZ (ceftazidime), CZA (ceftazidime/avibactam), C/T (ceftolozane/tazobactam), CIP (ciprofloxacin), AZT (aztreonam), P/T4 (piperacillin/tazobactam), COL (colistin). Antibiotics for which all isolates were sensitive (amikacin, gentamicin, tobramycin; according to Table 2) were not included.