Maize (Zea mays L.) Plants Alter the Fate and Accumulate Nonextractable Residues of Sulfamethoxazole in Farmland Soil

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(21), P. 9292 - 9302

Published: May 16, 2024

The fate of sulfonamide antibiotics in farmlands is crucial for food and ecological safety, yet it remains unclear. We used [phenyl-U-14C]-labeled sulfamethoxazole (14C-SMX) to quantitatively investigate the SMX a soil–maize system 60 days, based on six-pool model. Formation nonextractable residues (NERs) was predominant unplanted soil, accompanied by minor mineralization. Notably, maize plants significantly increased dissipation (kinetic constant kd = 0.30 day–1 vs 0.17 day–1), while substantially reducing NER formation (92% 58% initially applied SMX) accumulating (40%, mostly bound roots). Significant NERs (maximal 29–42%) were formed via physicochemical entrapment (determined using silylation), which could partially be released taken up plants. consisted considerable amount (1–8%) alkali-hydrolyzable covalent bonds (2–12%, possibly amide linkage). Six 10 transformation products quantified soil extracts NERs, respectively, including hydroxyl substitution, deamination, N-acylation, among N-lactylated found first time. Our findings reveal composition instability SMX-derived soil–plant underscore need study long-term impacts reversible NERs.

Language: Английский

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Distribution pattern analysis of multiple antibiotics in the soil-rice system using a QuEChERS extraction method

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 944, P. 173929 - 173929

Published: June 11, 2024

Language: Английский

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Reforestation significantly enriches soil microbial carbon, nitrogen, and phosphorus cycling genes but simplifies their co-occurrence network

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 207, P. 105935 - 105935

Published: Feb. 9, 2025

Language: Английский

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Translocation, Transformation, and Phytotoxicity of Sulfadiazine and N₄-Acetylsulfadiazine in Rice Plants

Journal of Agricultural and Food Chemistry, Journal Year: 2025, Volume and Issue: 73(9), P. 5067 - 5078

Published: Feb. 13, 2025

This study investigates the uptake, biotransformation, and phytotoxicity of sulfadiazine (SDZ) its acetyl derivative N4-acetylsulfadiazine (NASDZ) in rice. Results showed that rice was more tolerant to NASDZ, with lower malondialdehyde reactive oxygen species levels but higher antioxidant enzyme activities (SOD, POD, CAT). The maximum accumulations SDZ roots shoots were 19.3 ± 1.0 3.6 1.1 μg/g, while NASDZ 18.6 2.5 3.5 1.4 respectively. exposure generated metabolic intermediates, including deamination, hydroxylation, glycosylation, acetylation, formylation products, metabolism documented for first time. Key genes involved biotransformation include cytochrome P450, acetyltransferase, glycosyltransferases, methyltransferase. Density functional theory calculations structural differences affecting sites intermediates. disrupted lipid metabolism, altered carbohydrate amino acid pathways, highlighting their selective effects on metabolism. Our data help understand sulfonamide

Language: Английский

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Chemicals of Emerging Concern in Wastewater Treatment Plants from Mendoza: Environmental study in a semiarid region of Argentina

Journal of Hazardous Materials Advances, Journal Year: 2025, Volume and Issue: 18, P. 100662 - 100662

Published: Feb. 25, 2025

Language: Английский

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