Abstract:
:The Pseudomonas genus, which includes environmental and pathogenic species, is known to present antibiotic resistances, and can receive resistance genes from multi-resistant enteric bacteria released into the environment via faecal rejects. This study was aimed to investigate the resistome of Pseudomonas populations that have been in contact with these faecal bacteria. Thus, faecal discharges originating from human or cattle were sampled (from 12 points and two sampling campaigns) and 41 Pseudomonas species identified (316 isolates studied). The resistance phenotype to 25 antibiotics was determined in all isolates, and we propose a specific antibiotic resistance pattern for 14 species (from 2 to 9 resistances). None showed resistance to aminoglycosides, tetracycline, or polymyxins. Four species carried a very low number of resistances, with none to β-lactams. Interestingly, we observed the absence of the transcriptional activator soxR gene in these four species. No plasmid transfer was highlighted by conjugation assays, and a few class 1 but no class 2 integrons were detected in strains that may have received resistance genes from Enterobacteria. These results imply that the contribution of the Pseudomonas genus to the resistome of an ecosystem first depends on the structure of the Pseudomonas populations, as they may have very different resistance profiles.
journal_name
FEMS Microbiol Ecoljournal_title
FEMS microbiology ecologyauthors
Camiade M,Bodilis J,Chaftar N,Riah-Anglet W,Gardères J,Buquet S,Ribeiro AF,Pawlak Bdoi
10.1093/femsec/fiaa008subject
Has Abstractpub_date
2020-02-01 00:00:00issue
2eissn
0168-6496issn
1574-6941pii
5702129journal_volume
96pub_type
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