Presence of β-Lactamases Encoding Genes in Soil Samples from Different Origins
2017
Furlan, JoãoPedro Rueda | Stehling, ElianaGuedes
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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