RT Journal Article T1 The Toxicity Exerted by the Antibiotic Sulfadiazine on the Growth of Soil Bacterial Communities May Increase over Time A1 Santás Miguel, Vanesa A1 Rodríguez González, Laura A1 Núñez Delgado, Avelino A1 Díaz Raviña, Montserrat A1 Arias Estévez, Manuel A1 Fernández Calviño, David K1 Leucine incorporation K1 Risk assessment K1 Sulfonamide K1 Veterinary K1 Microbial community AB 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 PB MDPI YR 2020 FD 2020 LK http://hdl.handle.net/10347/24029 UL http://hdl.handle.net/10347/24029 LA eng NO Santás-Miguel, V.; Rodríguez-González, L.; Núñez-Delgado, A.; Díaz-Raviña, M.; Arias-Estévez, M.; Fernández-Calviño, D. The Toxicity Exerted by the Antibiotic Sulfadiazine on the Growth of Soil Bacterial Communities May Increase over Time. Int. J. Environ. Res. Public Health 2020, 17, 8773 NO This study has been funded by the Spanish Ministry of Economy and Competitiveness through the projects CGL2015-67333-C2-1-R and -2-R (FEDER Funds), and by Xunta de Galicia via CITACA Strategic Partnership (ED431E 2018/07) and BV1 research group (ED431C 2017/62-GRC). David Fernández Calviño holds a Ramón y Cajal contract (RYC-2016-20411) financed by the Spanish Ministry of Economy Industry and Competitiveness. Vanesa Santás Miguel holds a pre-doctoral fellowship founded by the University of Vigo DS Minerva RD 24 abr 2026