Identification and genomic features of halotolerant extended-spectrum-β-lactamase (CTX-M)-producing Escherichia coli in urban-impacted coastal waters, Southeast Brazil
2020
Fernandes, Miriam R. | Sellera, Fábio P. | Moura, Quézia | Esposito, Fernanda | Sabino, Caetano P. | Lincopan, Nilton
We report the occurrence and genomic analysis of extended-spectrum β-lactamase (CTX-M)-producing Escherichia coli in anthropogenically polluted coastal waters of Southeast Brazil. E. coli strains belonging to sequence types (STs) ST10, ST38, ST155 and ST1284 exhibited a wide resistome, with genes conferring resistance to medically relevant antimicrobials and heavy metals, and a halophilic behavior (tolerance to 9–10% NaCl). These findings suggest a heavy contamination in this area by critical priority bacteria adapted to marine environments, which might have negative impacts on human and ocean health.
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