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Wong MH, Minkina T, Vasilchenko N, Sushkova S, Delegan Y, Ranjan A, Saxena P, Tarigholizadeh S, Dudnikova T, Barbashev A, Maksimov A, Faenson A, Kızılkaya R. Assessment of antibiotic resistance genes in soils polluted by chemical and technogenic ways with poly-aromatic hydrocarbons and heavy metals. ENVIRONMENTAL RESEARCH 2024; 252:118949. [PMID: 38631472 DOI: 10.1016/j.envres.2024.118949] [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: 07/20/2023] [Revised: 01/18/2024] [Accepted: 04/14/2024] [Indexed: 04/19/2024]
Abstract
Anthropogenic activities are leaving lots of chemical footprints on the soil. It alters the physiochemical characteristics of the soil thereby modifying the natural soil microbiome. The prevalence of antimicrobial-resistance microbes in polluted soil has gained attention due to its obvious public health risks. This study focused on assessing the prevalence and distribution of antibiotic-resistance genes in polluted soil ecosystems impacted by industrial enterprises in southern Russia. Metagenomic analysis was conducted on soil samples collected from polluted sites using various approaches, and the prevalence of antibiotic-resistance genes was investigated. The results revealed that efflux-encoding pump sequences were the most widely represented group of genes, while genes whose products replaced antibiotic targets were less represented. The level of soil contamination increased, and there was an increase in the total number of antibiotic-resistance genes in proteobacteria, but a decrease in actinobacteria. The study proposed an optimal mechanism for processing metagenomic data in polluted soil ecosystems, which involves mapping raw reads by the KMA method, followed by a detailed study of specific genes. The study's conclusions provide valuable insights into the prevalence and distribution of antibiotic-resistance genes in polluted soils and have been illustrated in heat maps.
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Affiliation(s)
- Ming Hung Wong
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia; Consortium on Health, Environment, Education, and Research (CHEER), The Educaiton University of Hong Kong, Tai Po, Hong Kong, China
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Nikita Vasilchenko
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia; Almetyevsk State Oil Institute, 423450 Almetyevsk, Republic of Tatarstan, Russia
| | - Svetlana Sushkova
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Yanina Delegan
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia; G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, 5 Prosp. Nauki, Pushchino, 142290 Moscow, Russia
| | - Anuj Ranjan
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia.
| | - Pallavi Saxena
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Sarieh Tarigholizadeh
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Tamara Dudnikova
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Andrey Barbashev
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Aleksey Maksimov
- National Medical Research Centre for Oncology, 344037 Rostov-on-Don, Russia
| | - Alexandr Faenson
- National Medical Research Centre for Oncology, 344037 Rostov-on-Don, Russia
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Azuma T, Usui M, Hayashi T. Inactivation of antibiotic-resistant bacteria in hospital wastewater by ozone-based advanced water treatment processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167432. [PMID: 37777130 DOI: 10.1016/j.scitotenv.2023.167432] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/14/2023] [Accepted: 09/26/2023] [Indexed: 10/02/2023]
Abstract
The emergence and spread of antimicrobial resistance (AMR) continue on a global scale. The impacts of wastewater on the environment and human health have been identified, and understanding the environmental impacts of hospital wastewater and exploring appropriate forms of treatment are major societal challenges. In the present research, we evaluated the efficacy of ozone (O3)-based advanced wastewater treatment systems (O3, O3/H2O2, O3/UV, and O3/UV/H2O2) for the treatment of antimicrobials, antimicrobial-resistant bacteria (AMRB), and antimicrobial resistance genes (AMRGs) in wastewater from medical facilities. Our results indicated that the O3-based advanced wastewater treatment inactivated multiple antimicrobials (>99.9%) and AMRB after 10-30 min of treatment. Additionally, AMRGs were effectively removed (1.4-6.6 log10) during hospital wastewater treatment. The inactivation and/or removal performances of these pollutants through the O3/UV and O3/UV/H2O2 treatments were significantly (P < 0.05) better than those in the O3 and O3/H2O2 treatments. Altered taxonomic diversity of microorganisms based on 16S rRNA gene sequencing following the O3-based treatment showed that advanced wastewater treatments not only removed viable bacteria but also removed genes constituting microorganisms in the wastewater. Consequently, the objective of this study was to apply advanced wastewater treatments to treat wastewater, mitigate environmental pollution, and alleviate potential threats to environmental and human health associated with AMR. Our findings will contribute to enhancing the effectiveness of advanced wastewater treatment systems through on-site application, not only in wastewater treatment plants (WWTPs) but also in medical facilities. Moreover, our results will help reduce the discharge of AMRB and AMRGs into rivers and maintain the safety of aquatic environments.
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Affiliation(s)
- Takashi Azuma
- Department of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Masaru Usui
- Food Microbiology and Food Safety, Department of Health and Environmental Sciences, School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido 069-8501, Japan
| | - Tetsuya Hayashi
- Department of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan; Faculty of Human Development, Department of Food and Nutrition Management Studies, Soai University, 4-4-1 Nankonaka, Osaka Suminoeku, Osaka 559-0033, Japan
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Wei C, Lin B, Liu B, He Z, Li Q. The role of pores in micro-zone distribution of Cd in a tropical paddy soil: Results from X-ray computed tomography combined energy dispersive spectroscopy analysis. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131805. [PMID: 37301071 DOI: 10.1016/j.jhazmat.2023.131805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/06/2023] [Accepted: 06/06/2023] [Indexed: 06/12/2023]
Abstract
Accurate description of Cd micro-zone distribution and accumulation is the prerequisite for revealing Cd transfer and transformation processes. However, to date, the role of soil pores in the Cd micro-zone distribution characteristics in undisturbed soil is still unclear. In this study, the obvious heterogeneous distribution of Cd in and around the soil pores at the cross-sectional surface of the tropical undisturbed topsoil was visualized by the combination of X-ray micro-computed tomography and scanning electron microscope-energy dispersive spectroscopy. For both the air space and water-holding pores, the micro-zone distribution characteristics of Cd around the pores were dominated by pore sizes. For macropores and mesopores, Cd preferred to distribute in the micro-zone within 167.5-335 µm from pores. But for micropores, the highest content percentage of Cd was exhibited in the micro-zone within 67-167.5 µm from pores. The random forest model revealed that the occurrence of Fe (13.83%) and P (13.59%) contributed most to Cd micro-zone distribution around air space pores. While for water-holding pores, Fe occurrence (18.30%) contributed more significantly than P (11.92%) to Cd micro-zone distribution. Our study provided new insights into Cd retention mechanism, which is help for accessing Cd migration and transformation.
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Affiliation(s)
- Chaoxian Wei
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory of Low-carbon Green Agriculture in Tropical region of China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China
| | - Bigui Lin
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; National Long-term Experimental Station for Agriculture Green Development, Danzhou 571737, Hainan, China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, Hainan, China
| | - Beibei Liu
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory of Low-carbon Green Agriculture in Tropical region of China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; National Long-term Experimental Station for Agriculture Green Development, Danzhou 571737, Hainan, China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, Hainan, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou 571101, Hainan, China.
| | - Zhenli He
- University of Florida, Institute of Food and Agricultural Sciences, Department of Soil and Water Sciences/Indian River Research and Education Center, Fort Pierce, FL, USA
| | - Qinfen Li
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory of Low-carbon Green Agriculture in Tropical region of China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; National Long-term Experimental Station for Agriculture Green Development, Danzhou 571737, Hainan, China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, Hainan, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou 571101, Hainan, China
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Anju VT, Busi S, Mohan MS, Salim SA, Ar S, Imchen M, Kumavath R, Dyavaiah M, Prasad R. Surveillance and mitigation of soil pollution through metagenomic approaches. Biotechnol Genet Eng Rev 2023:1-34. [PMID: 36881114 DOI: 10.1080/02648725.2023.2186330] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 02/23/2023] [Indexed: 03/08/2023]
Abstract
Soil pollution is one of the serious global threats causing risk to environment and humans. The major cause of accumulation of pollutants in soil are anthropogenic activities and some natural processes. There are several types of soil pollutants which deteriorate the quality of human life and animal health. They are recalcitrant hydrocarbon compounds, metals, antibiotics, persistent organic compounds, pesticides and different kinds of plastics. Due to the detrimental properties of pollutants present in soil on human life and ecosystem such as carcinogenic, genotoxic and mutagenic effects, alternate and effective methods to degrade the pollutants are recommended. Bioremediation is an effective and inexpensive method of biological degradation of pollutants using plants, microorganisms and fungi. With the advent of new detection methods, the identification and degradation of soil pollutants in different ecosystems were made easy. Metagenomic approaches are a boon for the identification of unculturable microorganisms and to explore the vast bioremediation potential for different pollutants. Metagenomics is a power tool to study the microbial load in polluted or contaminated land and its role in bioremediation. In addition, the negative ecosystem and health effect of pathogens, antibiotic and metal resistant genes found in the polluted area can be studied. Also, the identification of novel compounds/genes/proteins involved in the biotechnology and sustainable agriculture practices can be performed with the integration of metagenomics.
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Affiliation(s)
- V T Anju
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Siddhardha Busi
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Mahima S Mohan
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Simi Asma Salim
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Sabna Ar
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Madangchanok Imchen
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Ranjith Kumavath
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Kerala, India
| | - Madhu Dyavaiah
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Ram Prasad
- Department of Botany, School of Life Sciences, Mahatma Gandhi Central University, Bihar, India
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Zhu S, Yang C, Chen H, Wang Y, Li J, Zhang R, Yang Y, Zhang C, Wang D. Organic Carbon Controls Mercury Distribution and Storage in the Surface Soils of the Water-Level-Fluctuation Zone in the Three Gorges Reservoir Region, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3681. [PMID: 36834375 PMCID: PMC9968128 DOI: 10.3390/ijerph20043681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
The particular condition of the water-level-fluctuation zone (WLFZ) in the Three Gorges Reservoir (TGR), the largest hydroelectric reservoir in China, raises great concerns about mercury (Hg) contamination and ecological risk. In addition, previous research found that soil organic carbon (SOC) plays an essential role in controlling Hg distribution and speciation. However, there is minimal information on the Hg storage distribution and their relationships with SOC in the WLFZ in TGR. This study investigated Hg distribution, storage, and their relationships with SOC in the surface soils in WLFZ. The results showed that the total Hg (THg) content in the surface soils ranged from 18.40 to 218.50 ng g-1, with an average value of 78.17 ± 41.92 ng g-1. About 89% of samples had THg content above the background value in Chongqing, showing specific enrichment of Hg in WLFZ due to contamination in the TGR. The surface soils have low SOC, with an average value of 8.10 ± 3.90 g kg-1. Moreover, THg content showed consistent distribution with the SOC in WLFZ, with a significantly positive correlation (R = 0.52, p < 0.01, n = 242). THg storage (201.82 ± 103.46 g ha-1) in the surface soils was also significantly positively correlated with the SOC storage (R = 0.47, p < 0.01, n = 242). The reduced SOC sequestration, due to the periodical alternative "flooding-draining" and frequent reclamation and utilization of WLFZ, decreased the Hg adsorption in soil. Those might result in the re-release of Hg into waters when WLFZ is flooded. Therefore, more attention should be directed towards Hg cycling and the consequent environmental risks in the TGR region.
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Affiliation(s)
- Sihua Zhu
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Caiyun Yang
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Hong Chen
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Yongmin Wang
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Jieqin Li
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Ruixi Zhang
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Yu Yang
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Cheng Zhang
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Dingyong Wang
- Interdisciplinary Research Centre for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing 400716, China
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Wei D, Wei C, Pan P, Lin B, Wu L, Liu B, He Z. Phosphorus fractions and iron oxides responsible for the variations in the Cd retention capacity in tropical soil aggregates under different cropping patterns. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130017. [PMID: 36174311 DOI: 10.1016/j.jhazmat.2022.130017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/05/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
The environmental behavior of Cd in soil has been widely studied because of its close relationship with food security and soil environmental pollution. In this study, the roles of P fractions and Fe oxides in the retention of Cd in typical tropical soil from five cropping patterns were investigated. Although there was no evident relationship between the Cd adsorption capacity and soil aggregate particle sizes, strong spatial associations of P, Fe, and Cd at the soil aggregates were observed via energy dispersive spectroscopy analysis. Among five cropping patterns, citrus plantations exhibited highest ratios (calculated by pixel area) of P overlapped with Cd (8.61%) and Fe overlapped with Cd (9.53%) in the microaggregates. Furthermore, the random forest model revealed that humic P and labile organic P greatly contributed to the sorptivity of Cd2+ by < 0.053 mm (13.3%) and 0.25-0.053 mm (13.4%) soil aggregates, respectively. Compared with the P fractions in different-sized soil aggregates, the contribution of Fe oxides to the sorption of Cd2+ by soil aggregates was more significant. Amorphous ferric oxide had the most significant contribution to the sorptivity of Cd2+ by < 0.053 mm (26.0%), 0.25-0.053 mm (23.0%), 2.0-0.25 mm (25.1%), and > 2.0 mm (33.9%) soil aggregates.
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Affiliation(s)
- Dengxiu Wei
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Chaoxian Wei
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory of Low-carbon Green Agriculture in Tropical region of China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China
| | - Pan Pan
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; National Long-term Experimental Station for Agriculture Green Development, Danzhou 571737, Hainan, China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, Hainan, China
| | - Bigui Lin
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou 571101, Hainan, China
| | - Lin Wu
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory of Low-carbon Green Agriculture in Tropical region of China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China
| | - Beibei Liu
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory of Low-carbon Green Agriculture in Tropical region of China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China; National Long-term Experimental Station for Agriculture Green Development, Danzhou 571737, Hainan, China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, Hainan, China.
| | - Zhenli He
- University of Florida, Institute of Food and Agricultural Sciences, Department of Soil and Water Sciences/Indian River Research and Education Center, Fort Pierce, FL, USA
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Sun C, Hu E, Liu S, Wen L, Yang F, Li M. Spatial distribution and risk assessment of certain antibiotics in 51 urban wastewater treatment plants in the transition zone between North and South China. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129307. [PMID: 35728325 DOI: 10.1016/j.jhazmat.2022.129307] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
The release of antibiotics from WWTPs into the environment has raised increasing concern worldwide. The monitoring of antibiotics in WWTPs throughout a region is crucial for emerging pollutant management. A large-scale survey of the occurrence, distribution, and ecological risk of seven antibiotics in 51 WWTPs was conducted in Shaanxi Province, China. Norfloxacin and ofloxacin had the highest detection concentrations of 474.2 and 656.18 ng L-1, respectively. Antibiotic residues in effluents were decreased by 5.88-94.16 % after different treatment processes. In particular, A2O or mixed processes performed well in removing target antibiotic compounds simultaneously. The ecological risk posed by antibiotic compounds detected in effluents was calculated using the risk quotient (RQ). Norfloxacin, ofloxacin, tetracycline, and roxithromycin posed different levels of potential ecotoxicological risk (RQ = 0.02-7.59). Based on the sum of the RQ values of individual antibiotic compounds, each investigated WWTP showed potential ecological risk. WWTPs with high risk levels were mainly found in the central region, while those in the southern region exhibited low risk levels, and those in the northern region showed risk levels between medium and high. This comprehensive investigation provides promising results to support the safe use and control of antibiotics in the study area.
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Affiliation(s)
- Changshun Sun
- Shaanxi Provincial Academy of Environmental Science, Xi'an 710061, PR China
| | - En Hu
- Shaanxi Provincial Academy of Environmental Science, Xi'an 710061, PR China
| | - Siwan Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Ling Wen
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Fang Yang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China.
| | - Ming Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
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Cheng JH, Tang XY, Cui JF. Distinct aggregate stratification of antibiotic resistome in farmland soil with long-term manure application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155088. [PMID: 35398129 DOI: 10.1016/j.scitotenv.2022.155088] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/22/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Agricultural soils, which are closely linked to human health via food supply, have been recognized as an important reservoir for antibiotic resistance genes (ARGs). However, there is still a lack of knowledge regarding the role of soil aggregates in shaping ARG profile. In this study, we collected soils from long-term experimental farmland plots receiving inorganic and/or organic fertilizers and examined the patterns of antibiotic resistome distribution among differently sized soil aggregates using high-throughput quantitative polymerase chain reaction (HT-qPCR). Our results showed that the distribution of soil ARGs could be affected by manure application and aggregate size individually but not interactively. More diverse and abundant ARGs were found in the manured soils, compared to the non-manured soils. The aggregate size fraction of <53 μm exhibited the highest diversity and abundance of ARGs. Variation partitioning analysis revealed that soil traits, mobile genetic elements, and bacterial community collectively contributed to the variation of soil antibiotic resistance. The knowledge about aggregation stratification of soil ARGs obtained in this study is fundamental and essential to understanding the fate of soil ARGs at the microscale.
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Affiliation(s)
- Jian-Hua Cheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xiang-Yu Tang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Jun-Fang Cui
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
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Li M, Ali A, Li Y, Su J, Zhang S. The performance and mechanism of simultaneous removal of calcium and heavy metals by Ochrobactrum sp. GMC12 with the chia seed (Salvia hispanica) gum as a synergist. CHEMOSPHERE 2022; 297:134061. [PMID: 35192851 DOI: 10.1016/j.chemosphere.2022.134061] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/27/2022] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
A bacterium Ochrobactrum sp. GMC12, capable of biomineralization and denitrification, was employed to investigate the performance and mechanism of heavy metals removal. A chia seeds (Salvia hispanica) gum was proposed as a synergist for the first time. The results showed that strain GMC12 reduced Ca2+, Cd2+, Zn2+, and nitrate by 83.38, 98.89, 98.95, and 100% (2.09, 0.29, 0.55, and 0.79 mg L-1 h-1), respectively, over 96 h continuous determination experiments. The concentration gradient test revealed that strain GMC12 would effectively remove Cd2+ and Zn2+ by 99.80 and 99.91% (0.67 and 1.35 mg L-1 h-1), respectively, under the synergistic effect of gum (1.0%, w/v). The SEM-EDS and XRD manifested that Ca2+, HMs ions, and anionic groups coated on the bacteria surface to form CaCO3, Ca5(PO4)3OH, CdCO3, Cd5(PO4)3OH, ZnCO3, and Zn2(PO4)OH. The fluorescence spectrometry and fourier transform infrared (FTIR) spectra illustrated that extracellular polymeric substance (EPS) was the key product for the nucleation site of bacteria, and the gum promoted the accumulation of bio-precipitates and accelerated the removal of HMs. In this research, Ochrobactrum sp. GMC12 exhibited great potential in wastewater treatment and chia seeds gum would go deep into material preparation and wastewater treatment due to its non-toxic nature, high viscosity, and advantageous morphology.
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Affiliation(s)
- Min Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Yifei Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Shuai Zhang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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Mu M, Yang F, Han B, Tian X, Zhang K. Manure application: A trigger for vertical accumulation of antibiotic resistance genes in cropland soils. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 237:113555. [PMID: 35483148 DOI: 10.1016/j.ecoenv.2022.113555] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 03/08/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
The application of livestock manure increases the dissemination risk of antibiotic resistance genes (ARGs) in farmland soil environment. However, the vertical migration behavior and driving factor of ARGs in manured soil under swine manure application remains undefined. Here, the dynamics of ARGs, mobile genetic elements (MGEs) and bacterial communities in different soil depths (0 - 80 cm) with long-term swine manure application were tracked and conducted using real-time qPCR. Results showed that long-term application of swine manure remarkably facilitated the vertical accumulation of ARGs and MGEs, in particular that the relative abundance of blaampC showed significant enrichment with increasing depth. ARGs abundance was similar in the three fields with long-term application of swine manure. (p>0.05). Procrustes analysis indicated that microbial communities were the dominant drivers of ARGs variation in topsoil, and the changes of environmental factors played a vital role in vertical migration ARGs in cropland soils. Additionally, the variation patterns of high-risk ARGs (i.e., blaampC, blaTEM-1) were influenced by the dominant bacteria (Actinomycetes) and pH. This study illustrated that the swine manure application promoted the vertical migration of ARGs, including multidrug resistance determinants, highlighting the ecological risk caused by long-term manure application.
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Affiliation(s)
- Meirui Mu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Fengxia Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
| | - Bingjun Han
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Xueli Tian
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Keqiang Zhang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
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