[1]Molecular Microbiology Unit Clemente Estable Biological Research Insitute Montevideo 11600 Uruguay;
[2]Microbiology Laboratory Faculty of Agronomy UdelaR Montevideo 12900 Uruguay;
[3]Genome Organization and Evolution Laboratory Ecology and Evolution Department Faculty of Sciences UdelaR Montevideo 11400 Uruguay;
[4]Molecular Biophysics and Integrated Bioimaging BSISB Imaging Program Lawrence Berkeley National Laboratory Berkeley CA 94720 USA;
[5]Bacteial Ecology Laboratory Ecology Institute National Autonomous University of Mexico CDMX 04510 Mexico;
[6]UN AM Yucatan Technology and Science Park Merida 97302 Mexico;
[7]Argentine Antarctic Institute Buenos Aires 1650 Argentina;
[8]Biotechnology Unit Faculty of Pharmacy and Biochemistry Nanobiotec Institute UBA-CONICET Buenos Aires 1113 Argentina;
Beta-lactamases; Antibiotic resistance coding genes; Metagenomes; Antarctic microbial mats;