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Tetracyclines uptake from irrigation water by vegetables: Accumulation and antimicrobial resistance risks

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Title Tetracyclines uptake from irrigation water by vegetables: Accumulation and antimicrobial resistance risks
 
Creator Gudda, Fredrick
Odinga, E.S.
Tang, L.
Waigi, M.G.
Wang, J.
Abdalmegeed, D.
Gao, Y.
 
Subject antimicrobial resistance
vegetables
wastewater irrigation
 
Description Wastewater irrigation may introduce antibiotic residues in the soil-plant systems. This study aimed to investigate the uptake of tetracyclines by spinach and collard greens and assess associated ecological and human health risks. Synthetic wastewater spiked with 1 ppm and 10 ppm of oxytetracycline, doxycycline, and tetracycline was used to grow vegetables in a greenhouse pot experiment. The uptake and accumulation of the tetracyclines were low and residual concentrations in the soil were negligible. All the tetracyclines were detected at concentrations ranging from 1.68 to 51.41 μg/g (spinach) and 1.94–30.95 μg/g (collard greens). The accumulation rate was in a dose-response scenario with a bioconcentration factor of 6.34 mL/kg (spinach) and 2.64 mL/kg (collard greens). Oxytetracycline had the highest accumulation in leaves, followed by doxycycline and tetracycline, and the residual concentrations followed the same order. The highest residual concentration was in soils receiving 10 ppm oxytetracycline. Residual concentrations in the soil were lower than accumulated levels and exerted negligible ecological risks. Tetracyclines accumulation in spinach significantly differed between the vegetables demonstrating a subspecies difference in uptake and accumulation. Ecological risk quotient (RQ) and human health risk quotient (HQ) were below thresholds that would exert toxicity and resistance selection impacts. Although RQs and HQs are low (
 
Date 2023-12-01
2023-10-06T13:28:05Z
2023-10-06T13:28:05Z
 
Type Journal Article
 
Identifier Gudda, F., Odinga, E.S., Tang, L., Waigi, M.G., Wang, J., Abdalmegeed, D. and Gao, Y. 2023. Tetracyclines uptake from irrigation water by vegetables: Accumulation and antimicrobial resistance risks. Environmental Pollution 338: 122696.
0269-7491
https://hdl.handle.net/10568/132161
https://doi.org/10.1016/j.envpol.2023.122696
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format 122696
 
Source Environmental Pollution