title: Comparative genomic analysis of bovine, environmental, and human strains of Pseudomonas aeruginosa.
abstract: Genomic analyses on versatility of the ubiquitous opportunistic pathogen Pseudomonas aeruginosa have been focusing on clinical strains from humans but much less on animal and environmental strains. Here, we aimed to compare genomic patterns of bovine, environmental, and human strains of P. aeruginosa. A collection of 71 strains, equally representing bovine (non-clinical), environmental (aquatic), and human (clinical) isolates from all main subregions of Hungary was genotyped by PCR microarray. Results were interpreted in comparison with internationally established human clinical and environmental clones, based on single nucleotide polymorphisms, on di- and multiallelic loci (fliC and fpvA) of the conserved core genome, and on genetic markers for the flexible accessory genome. As a result, a total of 33 clones were identified, with one bovine, 10 environmental, and five human clones regarded as new ones. In spite of general clonal diversity, bovine and human clones seemed to be habitat related. Bovine strains were characterized by significant overrepresentation of type III FpvA pyoverdine receptor, while the environmental and human strains showed the dominance of type I FpvA. Genotypes of non-clinical bovine strains of P. aeruginosa differed from those of human clinical strains, supporting the hypothesis about specific groups of strains colonizing specific habitats.
authors: Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.
authors: Ama
authors: A
authors: Szmolka
authors: Nina
authors: N
authors: Cramer
authors: Béla
authors: B
authors: Nagy
mesh_terms: D000818:Animals; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D016000:Cluster Analysis; D055028:Comparative Genomic Hybridization; D004269:DNA, Bacterial / Q000032:analysis; D060005:Genotyping Techniques; D006801:Humans; D006814:Hungary; D020411:Oligonucleotide Array Sequence Analysis; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D011552:Pseudomonas Infections / Q000382:microbiology* / Q000662:veterinary*; D011550:Pseudomonas aeruginosa / Q000235:genetics*; D014871:Water Microbiology
chemical_list: D001425:Bacterial Outer Membrane Proteins; D004269:DNA, Bacterial; C082326:FpvA protein, Pseudomonas aeruginosa