Abstract
The functional classification of β-lactamases is done through assessing their ability to hydrolyze specific β-lactams and its inactivation by inhibitors. This study investigated the β-lactamases encoding genes present in soil samples from different origins (landfill, preservation area, and soil from a farm). Genes codifying for ESBL enzymes bla SHV, bla TEM-116 and bla OXA-1 were found in all analyzed samples. Gene for ESBL bla CTX-M-14 was detected in the landfill and farm soil samples, but they were not found in the preservation area, while bla OXA-48-like was present just in the soil from the landfill. The gene for the MBL bla VIM was found in the soil sample from a farm. The results indicate that bla SHV, bla TEM-116, and bla OXA-1 genes are scattered in soils with and without potential contaminants; however, genes bla CTX-M-14, bla OXA-48, and bla VIM were detected just in polluted areas.
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