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Okada E, Young BJ, Pérez DJ, Pellegrini MC, Carciochi WD, Lavallén CM, Ponce AG, Dopchiz MC, Hernández Guijarro K, Franco MDR, Di Martino AM, Rizzo PF. Effect of on-farm poultry litter composting processes on physicochemical, biological, and toxicological parameters and reduction of antibiotics and antibiotic-resistant Escherichia coli. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 174:310-319. [PMID: 38086295 DOI: 10.1016/j.wasman.2023.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/13/2023] [Accepted: 12/02/2023] [Indexed: 01/16/2024]
Abstract
Poultry litter is a valuable source of nutrients for crop production, but its use in agriculture can lead to environmental and public health concerns due to the presence of pollutants, antibiotic-resistant bacteria (ARB) and antibiotic-resistant genes (ARGs). We compared the effect of different on-farm poultry litter composting processes on physicochemical, biological, and toxicological parameters, as well as on the occurrence of antibiotics and resistant Escherichia coli. The composting treatments consisted of passively-aerated piles C:N = 19 (PAC19), mechanically-aerated piles C:N = 19 (MAC19), and mechanically-aerated piles C:N = 30 (MAC30). Poultry litter composting led to a significant reduction of antibiotic residues, enteroparasites and antibiotic resistant E. coli. The conditions of the process, such as extra C source and mechanical aeration influence the quality of the final product. MAC19 is a low-cost effective method to reduce the potential risks associated with poultry litter use in agriculture and produce good quality compost.
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Affiliation(s)
- Elena Okada
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce INTA-CONICET), Route 226 Km 73.5 (7620) Balcarce, Argentina.
| | - Brian Jonathan Young
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas and Los Reseros (1686) Hurlingham, Buenos Aires, Argentina
| | - Débora Jesabel Pérez
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce INTA-CONICET), Route 226 Km 73.5 (7620) Balcarce, Argentina
| | - María Celeste Pellegrini
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce INTA-CONICET), Route 226 Km 73.5 (7620) Balcarce, Argentina
| | - Walter Daniel Carciochi
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce INTA-CONICET), Route 226 Km 73.5 (7620) Balcarce, Argentina
| | - Carla Mariela Lavallén
- Instituto de Investigación en Producción, Sanidad y Ambiente (IIPROSAM)-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, D. Funes 3350 (7600) Mar del Plata, Argentina
| | - Alejandra Graciela Ponce
- Grupo de Investigación en Ingeniería en Alimentos (GIIA), Instituto de Ciencia y Tecnología de alimentos y ambiente (INCITAA, CIC-UNMDP), CONICET, Facultad de Ingeniería, Universidad Nacional de Mar del Plata, Av. Juan B. Justo 4302 (7600) Mar del Plata, Argentina
| | - Marcela Cecilia Dopchiz
- Instituto de Investigación en Producción, Sanidad y Ambiente (IIPROSAM)-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, D. Funes 3350 (7600) Mar del Plata, Argentina
| | - Keren Hernández Guijarro
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce INTA-CONICET), Route 226 Km 73.5 (7620) Balcarce, Argentina
| | - María Del Rocío Franco
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce INTA-CONICET), Route 226 Km 73.5 (7620) Balcarce, Argentina
| | - Ana María Di Martino
- Estación Experimental Agropecuaria Pergamino INTA, Route 32 Km 4.5 (2700) Pergamino, Argentina
| | - Pedro Federico Rizzo
- Estación Experimental Agropecuaria Mendoza INTA. Área de Investigación y Desarrollo Tecnológico, Grupo Agrotecnología Sostenible, San Martin 3853 (5507) Luján de Cuyo, Argentina
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Nascimento ALA, Figueiredo IM, Botero WG, Santos JCC. Interaction between roxarsone, an organic arsenic compound, with humic substances in the soil simulating environmental conditions. CHEMOSPHERE 2023; 339:139688. [PMID: 37532198 DOI: 10.1016/j.chemosphere.2023.139688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/10/2023] [Accepted: 07/30/2023] [Indexed: 08/04/2023]
Abstract
In environmental systems, the soil is a principal route of contamination by various potentially toxic species. Roxarsone (RX) is an arsenic (V) organic compound used to treat parasitic diseases and as an additive for animal fattening. When the animal excretes RX, the residues may lead to environmental contamination. Due to their physicochemical properties, the soil's humic substances (HS) are important in species distribution in the environment and are involved in various specific interaction/adsorption processes. Since RX, an arsenic (V) compound, is considered an emerging contaminant, its interaction with HS was evaluated in simulated environmental conditions. The HS-RX interaction was analyzed by monitoring intrinsic HS fluorescence intensity variations caused by complexation with RX, forming non-fluorescent supramolecular complexes that yielded a binding constant Kb (on the order of 103). The HS-RX interaction occurred through static quenching due to complex formation in the ground state, which was confirmed by spectrophotometry. The process was spontaneous (ΔG < 0), and the predominant interaction forces were van der Waals and hydrogen bonding (ΔH < 0 and ΔS < 0), with an electrostatic component evidenced by the influence of ionic strength in the interaction process. Structural changes in the HS were verified by synchronized and 3D fluorescence, with higher variation in the region referring to the protein-like fraction. In addition, metal ions (except ions Cu(II)) favored HS-RX interaction. When interacting with HS, the RX epitope was suggested by 1H NMR, which indicated that the entire molecule interacts with the superstructure. An enzyme inhibition assay verified the ability to reduce the alkaline phosphatase activity of free and complexed RX (RX-HS). Finally, this work revealed the main parameters associated with HS and RX interaction in simulated environmental conditions, thus, providing data that may help our understanding of the dynamics of organic arsenic-influenced soils.
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Affiliation(s)
- Amanda Luise A Nascimento
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A.C. Simões, 57072-900, Maceió, Alagoas, Brazil
| | - Isis Martins Figueiredo
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A.C. Simões, 57072-900, Maceió, Alagoas, Brazil
| | - Wander Gustavo Botero
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A.C. Simões, 57072-900, Maceió, Alagoas, Brazil
| | - Josué Carinhanha Caldas Santos
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A.C. Simões, 57072-900, Maceió, Alagoas, Brazil.
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Wengang L, Fang C, Rong Z, Cuihong C. Biochar-Mediated Degradation of Roxarsone by Shewanella oneidensis MR-1. Front Microbiol 2022; 13:846228. [PMID: 35369465 PMCID: PMC8964303 DOI: 10.3389/fmicb.2022.846228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/08/2022] [Indexed: 11/30/2022] Open
Abstract
It is widely believed that biochar plays an essential role in sequestrating pollutants. The impacts of biochar on microbial growth, and consequently on the environmental fate of pollutants, however, remains poorly understood. In this study, wheat-straw-derived biochar was used to investigate how biochar amendment affected Shewanella oneidensis MR-1 growth and roxarsone transformation in water under anaerobic conditions. Three biochar with different physicochemical properties were used to mediate the roxarsone degradation. The results showed that the degradation rate of roxarsone could be accelerated by the increase of biochar pyrolysis temperature. From the characterization of biochar, the total specific surface area, micropore surface area and micropore volume of biochar increase, but the average pore diameter decreases as the pyrolysis temperature increases. Through infrared spectroscopy analysis, it was found that as the pyrolysis temperature increases, the degree of condensation of biochar increases, thereby increasing the pollutant removal rate. From the changes of the relative concentration of MR-1 and its secreted extracellular polymer content, the growth promotion ability of biochar also increases as the pyrolysis temperature increases. These results suggest that wheat-straw-derived biochar may be an important agent for activating microbial growth and can be used to accelerate the transformation of roxarsone, which could be a novel strategy for roxarsone remediation.
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Affiliation(s)
- Li Wengang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, China
- Tangshan Ecological Environmental Bureau, Tangshan, China
| | - Chen Fang
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, China
| | - Zhong Rong
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, China
| | - Chen Cuihong
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, China
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Wang G, Han N, Liu L, Ke Z, Li B, Chen G. Molecular density regulating electron transfer efficiency of S. oneidensis MR-1 mediated roxarsone biotransformation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 262:114370. [PMID: 32443212 DOI: 10.1016/j.envpol.2020.114370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/17/2020] [Accepted: 03/12/2020] [Indexed: 06/11/2023]
Abstract
Efficient extracellular electron transport is a key for sufficient bioremediation of organoarsenic pollutants such as 4-hydroxy-3-nitrobenzenearsonic acid (roxarsone). The related apparent kinetics characteristics are essential for engineering practice of bioremediation activities and for full understanding the environmental fate of roxarsone, yet remains poorly understood. We report, to our knowledge, the first study of the electron transfer characteristics between roxarsone and participating S. oneidensis MR-1. The electron transfer rate during roxarsone biotransformation was estimated up to 3.1 × 106 electrons/cell/s, with its value being clearly associated with the apparent roxarsone concentration. Lowing roxarsone concentration extended the average separation distance between cells and neighboring roxarsone molecules and thereby augmented electric resistance as well as extended cell movement for foraging, thus reduced electron transfer rate. In addition, the presence of roxarsone significantly stimulated population growth of S. oneidensis MR-1 with nearly doubled maximum specific growth rate, albeit with clearly increased lag time, as compared with that of none-roxarsone scenario. These findings provide, at the first time, basic biostoichiometry of S. oneidensis MR-1 induced roxarsone biotransformation, which may shed lights for full understanding of roxarsone transformation process in waste treatment systems that are necessary for engineering practice and/or environmental risks assessment.
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Affiliation(s)
- Gang Wang
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Neng Han
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Li Liu
- Department of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Zhengchen Ke
- Department of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Baoguo Li
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Guowei Chen
- Department of Civil Engineering, Hefei University of Technology, Hefei, 230009, China.
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Li Y, Liu Y, Zhang Z, Fei Y, Tian X, Cao S. Identification of an anaerobic bacterial consortium that degrades roxarsone. Microbiologyopen 2020; 9:e1003. [PMID: 32053294 PMCID: PMC7142373 DOI: 10.1002/mbo3.1003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/07/2020] [Accepted: 01/14/2020] [Indexed: 02/01/2023] Open
Abstract
The degradation of roxarsone, an extensively used organoarsenic feed additive, occurs quickly under anaerobic conditions with microorganisms playing an important role in its degradation. Here, an anaerobic bacterial consortium that effectively degraded roxarsone was isolated, and its degradation efficiency and community changes along a roxarsone concentration gradient under anaerobic conditions were assessed. We used batch experiments to determine the roxarsone degradation rates, as well as the bacterial community structure and diversity, at initial roxarsone concentrations of 50, 100, 200, and 400 mg/kg. The results showed that roxarsone was degraded completely within 28, 28, 36, and 44 hr at concentrations of 50, 100, 200, and 400 mg/kg, respectively. The anaerobic bacterial consortium displayed considerable potential to degrade roxarsone, as the degradation rate increased with increasing roxarsone concentrations. Roxarsone promoted microbial growth, and in turn, the microorganisms degraded the organoarsenic compound, with the functional bacterial community varying between different roxarsone concentrations. Lysinibacillus, Alkaliphilus, and Proteiniclasticum were the main genera composing the roxarsone‐degrading bacterial community.
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Affiliation(s)
- Yasong Li
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China.,Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Shijiazhuang, China
| | - Yaci Liu
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China.,Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Shijiazhuang, China
| | - Zhaoji Zhang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
| | - Yuhong Fei
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China.,Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Shijiazhuang, China
| | - Xia Tian
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China.,Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Shijiazhuang, China
| | - Shengwei Cao
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China.,Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Shijiazhuang, China
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6
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VEGF/Flk1 Mechanism is Involved in Roxarsone Promotion of Rat Endothelial Cell Growth and B16F10 Xenograft Tumor Angiogenesis. Sci Rep 2019; 9:17417. [PMID: 31758020 PMCID: PMC6874592 DOI: 10.1038/s41598-019-53870-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 11/06/2019] [Indexed: 01/08/2023] Open
Abstract
The potential angiogenic effect of roxarsone, a feed additive widely used to promote animal growth worldwide, was demonstrated recently. We explored the mechanism of vascular endothelial growth factor (VEGF) and its receptor (VEGFR) in roxarsone promotion of rat vascular endothelial cells (ECs) and B16F10 mouse xenografts. ECs were treated with 0.1–50 μM roxarsone or with roxarsone plus 10 ng/mL VEGF, VEGFR1 (Flt1), or VEGFR2 (Flk1) antibodies for 12–48 h to examine their role in cell growth promotion. Small interfering RNA (siRNA) targeting Vegf, Flt1, and Flk1 were transfected in the ECs, and we measured the expression level, cell proliferation, migration, and tube formation ability. The siRNA targeting Vegf or Flk1 were injected intratumorally in the B16F10 xenografts of mice that received 25 mg/kg roxarsone orally. Cell viability and VEGF expression following roxarsone treatment were significantly higher than that of the control (P < 0.05), peaking following treatment with 1.0 μM roxarsone. Compared to roxarsone alone, the VEGF antibody decreased cell promotion by roxarsone (P < 0.05), and the Flk1 antibody greatly reduced cell viability compared to the Flt1 antibody (P < 0.01). Roxarsone and Flk1 antibody co-treatment increased supernatant VEGF significantly, while cellular VEGF was obviously decreased (P < 0.01), whereas there was no significant difference following Flt1 antibody blockade. The siRNA against Vegf or Flk1 significantly attenuated the roxarsone promotion effects on EC proliferation, migration, and tube-like formation (P < 0.01), whereas the siRNA against Flt1 effected no obvious differences. Furthermore, the RNA interference significantly weakened the roxarsone-induced increase in xenograft weight and volume, and VEGF and Flk1 expression. Roxarsone promotion of rat EC growth, migration, and tube-like formation in vitro and of B16F10 mouse xenograft model tumor growth and angiogenesis involves a VEGF/Flk1 mechanism.
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Souza CDCBD, Amaral Sobrinho NMBD, Lima ESA, Lima JDO, Carmo MGFD, García AC. Relation between changes in organic matter structure of poultry litter and heavy metals solubility during composting. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 247:291-298. [PMID: 31252228 DOI: 10.1016/j.jenvman.2019.06.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 06/11/2019] [Accepted: 06/15/2019] [Indexed: 06/09/2023]
Abstract
Poultry litter (PL) is widely used as fertilizer because of its rich N, P and Ca content. When PL is applied to previously untreated soil, it is a potential contaminant. Composting is an alternative for stabilizing organic and mineral components. This study aimed to elucidate the structural changes and its influence on the solubility of heavy metals in poultry litter during the first 30 d of composting, which is the period when the most intense transformations occur. For this analysis, the transformation dynamics of the organic structures and the availability of mineral elements were studied via spectroscopic characterization, total heavy metal content determination and chemical fractionation at three composting times (0, 15, and 30 d). During composting, the material's aromaticity increased, while its aliphaticity decreased, and the hydrophobicity index increased as the polarity decreased. These results indicate that during the first 30 d, PL composting occurs via transformation of the most labile structures (carbohydrate, peptide and fatty acid fragments), thereby preserving the most stable and least functionalized structures. Composting increased the concentrations of Cu, Cr, Pb and Zn and the transformation of CAlk-O and CAlk-di-O associated with peptides and carbohydrates and favored solubilizing and leaching a water-soluble fraction rich in these compounds. The labile fractions of Fe and the humified organic matter fractions of Cu, Fe, Mn, Zn, and Al increased. The structural changes reduced heavy metal solubility, thus indicating that after 30 d of composting, the heavy metal contamination risk is low.
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Affiliation(s)
| | | | - Erica Souto Abreu Lima
- Laboratory of Soil Chemistry. Soil Departament, Institute of Agronomy, Federal Rural University of Rio de Janeiro, Brazil
| | - Jéssica de Oliveira Lima
- Laboratory of Pathology and Seed Epidemiology. Fitotecnia Departament, Institute of Agronomy, Federal Rural University of Rio de Janeiro, Brazil
| | - Margarida Goréte Ferreira do Carmo
- Laboratory of Pathology and Seed Epidemiology. Fitotecnia Departament, Institute of Agronomy, Federal Rural University of Rio de Janeiro, Brazil
| | - Andrés Calderín García
- Laboratory of Soil Biological Chemistry. Soil Departament, Institute of Agronomy, Federal Rural University of Rio de Janeiro, Brazil
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Chen J, Zhang J, Rosen BP. Role of ArsEFG in Roxarsone and Nitarsone Detoxification and Resistance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:6182-6191. [PMID: 31059239 DOI: 10.1021/acs.est.9b01187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Organoarsenical biotransformations are important components of the global cycling of arsenic. Roxarsone (3-nitro-4-hydroxybenzenearsenate or Rox(V)) and nitarsone (4-nitrobenzene arsenate or Nit(V)) are synthetic aromatic organoarsenicals used in the poultry industry as additives to prevent coccidiosis and improve feed efficiency. Here, we describe a novel pathway of resistance to roxarsone and nitarsone involving biotransformation of their trivalent forms (Rox(III)) and (Nit(III)) to the trivalent organoarsenicals HAPA(III) and pAsA(III), coupled to active extrusion of the aromatic aminobenezylarsenicals from the cells. The arsE, arsF, and arsG were cloned from the arsenic island in the chromosome of Shewanella putrefaciens 200. When expressed in Escherichia coli together, but not alone, arsEFG conferred resistance to Rox(III) and Nit(III) and decreased the accumulation of both. The cells transformed Rox(III) or Nit(III) to HAPA(III) or pAsA(III) by reducing the nitro group to an amine. Everted membrane vesicles from cells expressing arsG accumulated HAPA(III) or pAsA(III). Our data indicate that ArsE and ArsF together reduce Rox(III) or Nit(III) to HAPA(III) or pAsA(III), which are extruded from the cells by the efflux permease ArsG. Identification of the coupled pathway of ArsE, ArsF, and ArsG catalysis is a molecular description of a novel pathway for resistance to roxarsone and nitarsone.
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Affiliation(s)
- Jian Chen
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine , Florida International University , Miami , Florida 33199 , United States
| | - Jun Zhang
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine , Florida International University , Miami , Florida 33199 , United States
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences , Nanjing Agricultural University , Nanjing 210095 , China
| | - Barry P Rosen
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine , Florida International University , Miami , Florida 33199 , United States
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Liu XP, Bi QF, Qiu LL, Li KJ, Yang XR, Lin XY. Increased risk of phosphorus and metal leaching from paddy soils after excessive manure application: Insights from a mesocosm study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 666:778-785. [PMID: 30812011 DOI: 10.1016/j.scitotenv.2019.02.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 06/09/2023]
Abstract
Livestock manure has gradually become an alternative fertilizer for maintaining soil fertility, whereas excessive application of manure leads to the release of phosphorus (P) and toxic metals that may cause complex environmental risks. To investigate the accumulation and migration of P within soil profiles, a mesocosm experiment was conducted to analyze the content and leaching of soil P, metals, and dissolved organic carbon after different fertilization treatments, including control (no fertilizer, CK), chemical fertilizer (CF), chemical fertilizer combined low (CF + LPM) and high (CF + HPM) rate of manure application. Results showed that a high rate of manure application significantly enhanced the accumulation of total soil P (by ~14%) and P availability (easily-available P, by ~24%; Olsen-P, by ~20%) in topsoil, and also increased the content of easily-available organic P (EA-Po) in both topsoil and subsoil compared to the CK treatment. The migration of dissolved inorganic and organic P (DIP and DOP) in leachate within soil profiles was strengthened by manure application. Moreover, significant positive correlations between P, metals, and dissolved organic carbon (DOC) in leachate indicated that downward co-migration occurred within the soil profiles, and also suggested that excessive manure application can intensify the risk of P loss by increasing the migration of manure-derived DOC. Overall, our findings provide insights into P accumulation and migration within soil profiles after excessive manure application, which is useful for predicting the potential risk of P and metal leaching from paddy soils.
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Affiliation(s)
- Xi-Peng Liu
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Qing-Fang Bi
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Department of Microbiology and Ecosystem Science, University of Vienna, Vienna A-1090, Austria
| | - Lin-Lin Qiu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, China
| | - Ke-Jie Li
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiao-Ru Yang
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xian-Yong Lin
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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10
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Chen G, Liu H, Zhang W, Li B, Liu L, Wang G. Roxarsone exposure jeopardizes nitrogen removal and regulates bacterial community in biological sequential batch reactors. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 159:232-239. [PMID: 29753825 DOI: 10.1016/j.ecoenv.2018.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/02/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
Roxarsone is widely present in wastewaters of many animal farms in China. However, little is known about how long-term roxarsone exposure influences the nitrogen removal of biological wastewater treatment in agricultural settings. Here we investigated the nitrogen removal performance of a biological sequential batch reactor (SBR) and the changes of bacterial community, upon long-term roxarsone exposure. The long-term roxarsone dosing decreased the SBR nitrogen removal by 52.4%, with an immediate inhibition on denitrification and a delayed inhibition on nitrification. The analyses of bacterial enzymatic activities and 16 S rRNA sequencing revealed that bacterial activities generally decreased, and the nitrogen-cycling bacterial community was changed, particularly by the decrease (Acinetobacter and Methylophilaceae), persistence (Flavobacterium and Methylotenera), and emergence (Aeromonas) of certain bacterial genera. Overall, chronic roxarsone exposure could suppress nitrification and denitrification, which may even have broad implications on the use efficiency and cycling of nitrogen in agroecosystems.
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Affiliation(s)
- Guowei Chen
- Department of Civil Engineering, Hefei University of Technology, Hefei 230009, China; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
| | - Huan Liu
- Department of Civil Engineering, Hefei University of Technology, Hefei 230009, China; SIPPR Engineering Group Co., Ltd, Zhengzhou 450000, China
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, and Environmental Science and Policy Program, Michigan State University, East Lansing, MI 48824, United States
| | - Baoguo Li
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, China
| | - Li Liu
- Department of Civil Engineering, Hefei University of Technology, Hefei 230009, China
| | - Gang Wang
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, China.
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Liu Q, Leslie EM, Moe B, Zhang H, Douglas DN, Kneteman NM, Le XC. Metabolism of a Phenylarsenical in Human Hepatic Cells and Identification of a New Arsenic Metabolite. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:1386-1392. [PMID: 29280623 DOI: 10.1021/acs.est.7b05081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Environmental contamination and human consumption of chickens could result in potential exposure to Roxarsone (3-nitro-4-hydroxyphenylarsonic acid), an organic arsenical that has been used as a chicken feed additive in many countries. However, little is known about the metabolism of Roxarsone in humans. The objective of this research was to investigate the metabolism of Roxarsone in human liver cells and to identify new arsenic metabolites of toxicological significance. Human primary hepatocytes and hepatocellular carcinoma HepG2 cells were treated with 20 or 100 μM Roxarsone. Arsenic species were characterized using a strategy of complementary chromatography and mass spectrometry. The results showed that Roxarsone was metabolized to more than 10 arsenic species in human hepatic cells. A new metabolite was identified as a thiolated Roxarsone. The 24 h IC50 values of thiolated Roxarsone for A549 lung cancer cells and T24 bladder cancer cells were 380 ± 80 and 42 ± 10 μM, respectively, more toxic than Roxarsone, whose 24 h IC50 values for A549 and T24 were 9300 ± 1600 and 6800 ± 740 μM, respectively. The identification and toxicological studies of the new arsenic metabolite are useful for understanding the fate of arsenic species and assessing the potential impact of human exposure to Roxarsone.
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Affiliation(s)
- Qingqing Liu
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta , 10-102 Clinical Sciences Building, Edmonton, Alberta, Canada T6G 2G3
| | - Elaine M Leslie
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta , 10-102 Clinical Sciences Building, Edmonton, Alberta, Canada T6G 2G3
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta , 7-08A Medical Sciences Building, Edmonton, Alberta, Canada T6G 2H7
| | - Birget Moe
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta , 10-102 Clinical Sciences Building, Edmonton, Alberta, Canada T6G 2G3
- Alberta Centre for Toxicology, Department of Physiology and Pharmacology, Faculty of Medicine, University of Calgary , Calgary, Alberta, Canada T2N 4N1
| | - Hongquan Zhang
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta , 10-102 Clinical Sciences Building, Edmonton, Alberta, Canada T6G 2G3
| | - Donna N Douglas
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Walter C. Mackenzie Health Sciences Centre , Edmonton, Alberta, Canada T6G 2B7
| | - Norman M Kneteman
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Walter C. Mackenzie Health Sciences Centre , Edmonton, Alberta, Canada T6G 2B7
| | - X Chris Le
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta , 10-102 Clinical Sciences Building, Edmonton, Alberta, Canada T6G 2G3
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