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The Toxicity Exerted by the Antibiotic Sulfadiazine on the Growth of Soil Bacterial Communities May Increase over Time

Author

Listed:
  • Vanesa Santás-Miguel

    (Área de Edafoloxía e Química Agrícola, Facultade de Ciencias, Universidade de Vigo, 32004 Ourense, Galiza, Spain
    CITACA-Clúster de Investigación e Transferencia Agroalimentaria do Campus Auga, Universidade de Vigo, 32004 Ourense, Galiza, Spain)

  • Laura Rodríguez-González

    (Área de Edafoloxía e Química Agrícola, Facultade de Ciencias, Universidade de Vigo, 32004 Ourense, Galiza, Spain
    CITACA-Clúster de Investigación e Transferencia Agroalimentaria do Campus Auga, Universidade de Vigo, 32004 Ourense, Galiza, Spain)

  • Avelino Núñez-Delgado

    (Departamento de Edafoloxía e Química Agrícola, Escola Politécnica Superior de Enxeñaría, Universidade de Santiago de Compostela, 15705 Lugo, Galicia, Spain)

  • Montserrat Díaz-Raviña

    (Departamento de Bioquímica del Suelo, Instituto de Investigaciones Agrobiologicas de Galicia (IIAG/CSIC), 15705 Santiago de Compostela, Galicia, Spain)

  • Manuel Arias-Estévez

    (Área de Edafoloxía e Química Agrícola, Facultade de Ciencias, Universidade de Vigo, 32004 Ourense, Galiza, Spain
    CITACA-Clúster de Investigación e Transferencia Agroalimentaria do Campus Auga, Universidade de Vigo, 32004 Ourense, Galiza, Spain)

  • David Fernández-Calviño

    (Área de Edafoloxía e Química Agrícola, Facultade de Ciencias, Universidade de Vigo, 32004 Ourense, Galiza, Spain
    CITACA-Clúster de Investigación e Transferencia Agroalimentaria do Campus Auga, Universidade de Vigo, 32004 Ourense, Galiza, Spain)

Abstract

The toxicity exerted by the antibiotic sulfadiazine on the growth of soil bacterial communities was studied in two agricultural soils for a period of 100 days. In the short-term (2 days of incubation), the effect of sulfadiazine on bacterial growth was low (no inhibition or inhibition <32% for a dose of 2000 mg·kg −1 ). However, sulfadiazine toxicity increased with time, achieving values of 40% inhibition, affecting bacterial growth in both soils after 100 days of incubation. These results, which were here observed for the first time for any antibiotic in soil samples, suggest that long-term experiments would be required for performing an adequate antibiotics risk assessment, as short-term experiments may underestimate toxicity effects.

Suggested Citation

  • Vanesa Santás-Miguel & Laura Rodríguez-González & Avelino Núñez-Delgado & Montserrat Díaz-Raviña & Manuel Arias-Estévez & David Fernández-Calviño, 2020. "The Toxicity Exerted by the Antibiotic Sulfadiazine on the Growth of Soil Bacterial Communities May Increase over Time," IJERPH, MDPI, vol. 17(23), pages 1-10, November.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:23:p:8773-:d:451376
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