186 results match your criteria hosts args

Metagenomic analysis reveals the shared and distinct features of the soil resistome across tundra, temperate prairie, and tropical ecosystems.

Microbiome 2021 May 14;9(1):108. Epub 2021 May 14.

Interdisciplinary Research Center for Soil Microbial Ecology and Land Sustainable Productivity in Dry Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.

Background: Soil is an important reservoir of antibiotic resistance genes (ARGs), but their potential risk in different ecosystems as well as response to anthropogenic land use change is unknown. We used a metagenomic approach and datasets with well-characterized metadata to investigate ARG types and amounts in soil DNA of three native ecosystems: Alaskan tundra, US Midwestern prairie, and Amazon rainforest, as well as the effect of conversion of the latter two to agriculture and pasture, respectively.

Results: High diversity (242 ARG subtypes) and abundance (0. Read More

View Article and Full-Text PDF

Deciphering Potential Roles of Earthworms in Mitigation of Antibiotic Resistance in the Soils from Diverse Ecosystems.

Environ Sci Technol 2021 May 12. Epub 2021 May 12.

State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

Earthworms are capable of redistributing bacteria and antibiotic resistance genes (ARGs) through soil profiles. However, our understanding of the earthworm gut microbiome and its interaction with the antibiotic resistome is still lacking. Here, we characterized the earthworm gut and soil microbiome and antibiotic resistome in natural and agricultural ecosystems at a national scale, and microcosm studies and field experiments were also employed to test the potential role of earthworms in dynamics of soil ARGs. Read More

View Article and Full-Text PDF

Soil type shapes the antibiotic resistome profiles of long-term manured soil.

Sci Total Environ 2021 Apr 27;786:147361. Epub 2021 Apr 27.

College of Resources and Environment, Southwest University, Chongqing 400716, China. Electronic address:

Animal manure fertilization facilitates the proliferation and dissemination of antibiotic resistance genes (ARGs) in soil, posing high risks to humans and ecosystem health. Although studies suggest that soil types could shape the ARG profiles in greenhouse soil, there is still a lack of comparative studies on the fate of ARGs in different types of manured soils under field trials. Thus, a metagenomic approach was used to decipher the fate of ARGs in 12-year long-term fertilized (inorganic fertilizer, compost manure and a mix of them) acidic, near-neutral and alkaline soils. Read More

View Article and Full-Text PDF

Microplastics are a hotspot for antibiotic resistance genes: Progress and perspective.

Sci Total Environ 2021 Jun 6;773:145643. Epub 2021 Feb 6.

Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China. Electronic address:

Antibiotic resistance genes (ARGs) and microplastics in the environment are of great public concern due to their potential risk to human health. Microplastics can form distinct bacterial communities and absorb pollutants from the surrounding environment, which provide potential hosts and exert possible selection pressure of ARGs. We provide a practical evaluation of the scientific literature regarding this issue. Read More

View Article and Full-Text PDF

The variation of antibiotic resistance genes and their links with microbial communities during full-scale food waste leachate biotreatment processes.

J Hazard Mater 2021 Apr 1;416:125744. Epub 2021 Apr 1.

Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China. Electronic address:

The prevalence of antibiotic resistance genes (ARGs) has been widely reported in various environments. However, little is known of them in food waste (FW) leachate with high organic content and how their distribution is influenced by biotreatment processes. Here, twelve ARGs, two integrase genes and bacterial communities were investigated during two full-scale FW biotreatment processes. Read More

View Article and Full-Text PDF

Enhanced removal of antibiotic resistance genes and mobile genetic elements during swine manure composting inoculated with mature compost.

J Hazard Mater 2021 Jun 13;411:125135. Epub 2021 Jan 13.

College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.

Livestock manure is a major source of antibiotic resistance genes (ARGs) that enter the environment. This study assessed the effects of inoculation with mature compost (MC) on the fates of ARGs and the bacterial community during swine manure composting. The results showed that MC prolonged the thermophilic period and promoted the decomposition of organic matter, which was due to the rapid growth and reproduction of thermophilic bacteria (Bacillus, Thermobifida, and Thermobacillus). Read More

View Article and Full-Text PDF

Elimination and analysis of mcr-1 and bla in different composting pile layers under semipermeable membrane composting with copper-contaminated poultry manure.

Bioresour Technol 2021 Jul 30;332:125076. Epub 2021 Mar 30.

College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou 510642, Guangdong, China. Electronic address:

The mcr-1 and bla elimination in copper contamination poultry manure was evaluated by semi-permeable membrane composting. The results showed the mcr-1 in control and high copper groups could not be removed, but mcr-1 decreased superlatively 80.1% in low copper treatment group. Read More

View Article and Full-Text PDF

The behavior of antibiotic-resistance genes and their relationships with the bacterial community and heavy metals during sewage sludge composting.

Ecotoxicol Environ Saf 2021 Mar 30;216:112190. Epub 2021 Mar 30.

College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China.

The main contributors to antibiotic resistance genes (ARGs) profiles during the composting process under the addition of biochar (BC) and peat (PT) were not fully explored. This study investigated the influence of BC and PT amendment on ARGs fate, the bacterial community and heavy metals in sewage sludge compost. Compared to control, BC and PT declined the total abundances of ARGs by 17. Read More

View Article and Full-Text PDF

Hybrid assembly of an agricultural slurry virome reveals a diverse and stable community with the potential to alter the metabolism and virulence of veterinary pathogens.

Microbiome 2021 03 20;9(1):65. Epub 2021 Mar 20.

Dept Genetics and Genome Biology, University of Leicester, University Road, Leicester, Leicestershire, LE1 7RH, UK.

Background: Viruses are the most abundant biological entities on Earth, known to be crucial components of microbial ecosystems. However, there is little information on the viral community within agricultural waste. There are currently ~ 2. Read More

View Article and Full-Text PDF

[Occurrence of Antibiotics and Antibiotic Resistance Genes in Representative Drinking Water Resources in Jiangsu Province].

Huan Jing Ke Xue 2021 Feb;42(2):749-760

Key Laboratory for Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.

Emerging contaminants including antibiotics and antibiotic resistance genes (ARGs) have been frequently detected in drinking water resources. In this study, the occurrence of antibiotics and ARGs in various environmental matrices in representative drinking water sources in Jiangsu Province and their influencing factors were explored. Five representative drinking water sources in northern, central, and southern Jiangsu were selected. Read More

View Article and Full-Text PDF
February 2021

Thermophilic rather than mesophilic sludge anaerobic digesters possess lower antibiotic resistant genes abundance.

Bioresour Technol 2021 Jun 3;329:124924. Epub 2021 Mar 3.

College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.

For exploring the impact of temperature on antibiotic resistant genes (ARGs) during sludge anaerobic digestion (AD), the dynamic variations of sludge ARGs, plasmid ARGs, and cell-free ARGs in mesophilic (25 °C and 35 °C) and thermophilic (55 °C) digesters were investigated. The study revealed that the abundance of sludge ARGs and plasmid ARGs in thermophilic sludge AD was significantly lower than that in mesophilic digesters, while the cell-free ARGs abundance of the thermophilic digesters was similar to mesophilic digesters. Higher archaea abundance, lower bacteria abundance, and different microbial community were found in thermophilic digesters compared to that of mesophilic ones. Read More

View Article and Full-Text PDF

Tracking Reservoirs of Antimicrobial Resistance Genes in a Complex Microbial Community Using Metagenomic Hi-C: The Case of Bovine Digital Dermatitis.

Antibiotics (Basel) 2021 Feb 23;10(2). Epub 2021 Feb 23.

Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011, USA.

Bovine digital dermatitis (DD) is a contagious infectious cause of lameness in cattle with unknown definitive etiologies. Many of the bacterial species detected in metagenomic analyses of DD lesions are difficult to culture, and their antimicrobial resistance status is largely unknown. Recently, a novel proximity ligation-guided metagenomic approach (Hi-C ProxiMeta) has been used to identify bacterial reservoirs of antimicrobial resistance genes (ARGs) directly from microbial communities, without the need to culture individual bacteria. Read More

View Article and Full-Text PDF
February 2021

Diverse and abundant antibiotic resistance genes in mangrove area and their relationship with bacterial communities - A study in Hainan Island, China.

Environ Pollut 2021 May 8;276:116704. Epub 2021 Feb 8.

College of Life Science, Hainan Normal University, Haikou, 571158, China.

Antibiotic resistance genes (ARGs) are emerging contaminants in the environment and have been highlighted as a worldwide environmental and health concern. As important participants in the biogeochemical cycles, mangrove ecosystems are subject to various anthropogenic disturbances, and its microbiota may be affected by various contaminants such as ARGs. This study selected 13 transects of mangrove-covered areas in Hainan, China for sediment sample collection. Read More

View Article and Full-Text PDF

Effect of preferential UV photolysis on the source control of antibiotic resistome during subsequent biological treatment systems.

J Hazard Mater 2021 Feb 23;414:125484. Epub 2021 Feb 23.

School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, PR China.

The environmental spread of antibiotic resistance genes (ARGs) from the direct application of traditional biological treatment systems for antibiotics in water is a potential public health threat. UV photolysis has been proved to be an efficient pretreatment method for antibacterial activity elimination, but the fate of antibiotic resistome in subsequent bioreactors fed with pretreated florfenicol (FLO) in synthetic wastewater is still unknown. Antibacterial activity in synthetic wastewater was effectively eliminated by UV irradiation pretreatment, and the diversity and abundance of detected ARGs in both aerobic and anaerobic bioreactors were significantly lower than those without pretreatment. Read More

View Article and Full-Text PDF
February 2021

Antibiotic resistome from the One-Health perspective: understanding and controlling antimicrobial resistance transmission.

Exp Mol Med 2021 Mar 1;53(3):301-309. Epub 2021 Mar 1.

Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17546, Republic of Korea.

The concept of the antibiotic resistome was introduced just over a decade ago, and since then, active resistome studies have been conducted. In the present study, we describe the previously established concept of the resistome, which encompasses all types of antibiotic resistance genes (ARGs), and the important findings from each One-Health sector considering this concept, thereby emphasizing the significance of the One-Health approach in understanding ARG transmission. Cutting-edge research methodologies are essential for deciphering the complex resistome structure in the microbiomes of humans, animals, and the environment. Read More

View Article and Full-Text PDF

Horizontal and vertical gene transfer drive sediment antibiotic resistome in an urban lagoon system.

J Environ Sci (China) 2021 Apr 25;102:11-23. Epub 2020 Sep 25.

CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address:

Rapid urbanization has resulted in pervasive occurrence of antibiotic resistance genes (ARGs) in urban aquatic ecosystems. However, limited information is available concerning the ARG profiles and the forces responsible for their assembly in urban landscape lagoon systems. Here, we employed high-throughput quantitative PCR (HT-qPCR) to characterize the spatial variations of ARGs in surface and core sediments of Yundang Lagoon, China. Read More

View Article and Full-Text PDF

Fate of antibiotic resistance genes during temperature-changed psychrophilic anaerobic digestion of municipal sludge.

Water Res 2021 Apr 13;194:116926. Epub 2021 Feb 13.

Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, Gansu, China; Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou 730020, China; Gansu Key Laboratory of Biomonitoring and Bioremediation for Environment Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China. Electronic address:

The effects of anaerobic digestion (AD) on the abundance of antibiotic resistance genes (ARGs) are highly related to operational temperature. However, the removal performance of ARGs in psychrophilic AD and changed temperatures simulating variable seasonal temperatures is poorly understood. Herein, we investigated the fate of ARGs, correlated bacterial communities and physicochemical properties of AD operation at psychrophilic (15 ℃), mesophilic (35 ℃), and temperature changed conditions (15 to 35 ℃ and 35 to 15 ℃). Read More

View Article and Full-Text PDF

Genomic islands mediate environmental adaptation and the spread of antibiotic resistance in multiresistant Enterococci - evidence from genomic sequences.

BMC Microbiol 2021 Feb 19;21(1):55. Epub 2021 Feb 19.

School of Life Science, |Ludong University, Yantai, 264025, China.

Background: Genomic islands (GIs) play an important role in the chromosome diversity of Enterococcus. In the current study, we aimed to investigate the spread of GIs between Enterococcus strains and their correlation with antibiotic resistance genes (ARGs). Bitsliced Genomic Signature Indexes (BIGSI) were used to screen the NCBI Sequence Read Archive (SRA) for multiple resistant Enterococcus. Read More

View Article and Full-Text PDF
February 2021

Significant effect of pH on tetracycline resistance genes reduction during sludge thermal hydrolysis treatment.

Waste Manag 2021 Apr 15;124:36-45. Epub 2021 Feb 15.

School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China.

Thermal hydrolysis (TH) treatment has been verified to effectively reduce antibiotic resistance genes (ARGs) in waste activated sludge. This study focused on the effect of TH parameters on ARGs reduction, and the optimal conditions basing on tetracycline (tet) resistance genes reduction rate in sludge phase were pH 3, temperature 160 °C and reaction time 2 h. The pH was found to play a critical role in tet genes reduction behavior. Read More

View Article and Full-Text PDF

Monitoring of antimicrobial resistance genes in the spotted sea bass (Lateolabrax maculatus): Association with the microbiome and its environment in aquaculture ponds.

Environ Pollut 2021 May 10;276:116714. Epub 2021 Feb 10.

Key Laboratory of Aquatic Product Processing, Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China.

Antimicrobial resistance genes (ARGs) pose a serious threat to environment and human health. However, few studies address the abundance and distribution of ARGs associated with farmed fish and their aquaculture environment. Here we conducted an analysis of the abundance and distribution of gut and gill ARGs by quantitative PCR techniques associated with the spotted sea bass (Lateolabrax maculatus) as well as the bacterial communities in the surrounding environment (water and sediment). Read More

View Article and Full-Text PDF

Enhanced control of sulfonamide resistance genes and host bacteria during thermophilic aerobic composting of cow manure.

Environ Pollut 2021 Apr 1;275:116587. Epub 2021 Feb 1.

Agricultural Clean Watershed Research Group, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China. Electronic address:

Traditional composting has already shown a certain effect in eliminating antibiotic residues, antibiotic-resistant bacteria (ARBs), and antibiotic resistance genes (ARGs). It is worth noting that the rebounding of ARGs and the succession of the bacterial community during conventional aerobic composting are still serious threats. Considering the probable risk, improved and adaptable technologies are urgently needed to control antibiotic resistance efficiently. Read More

View Article and Full-Text PDF

Critical evaluation of short, long, and hybrid assembly for contextual analysis of antibiotic resistance genes in complex environmental metagenomes.

Sci Rep 2021 Feb 12;11(1):3753. Epub 2021 Feb 12.

Department of Civil & Environmental Engineering, Virginia Tech, Blacksburg, VA, 24060, USA.

In the fight to limit the global spread of antibiotic resistance, the assembly of environmental metagenomes has the potential to provide rich contextual information (e.g., taxonomic hosts, carriage on mobile genetic elements) about antibiotic resistance genes (ARG) in the environment. Read More

View Article and Full-Text PDF
February 2021

Antibiotic resistance genes in surface water and groundwater from mining affected environments.

Sci Total Environ 2021 Jun 2;772:145516. Epub 2021 Feb 2.

SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China. Electronic address:

Mining activities are known to generate a large amount of mine tailings and acid mine drainage which contain varieties of heavy metals. Heavy metals play an important role in co-selection for bacterial antibiotic resistance. However, the characteristics of antibiotic resistance genes (ARGs) in mining-affected water environments are still unclear. Read More

View Article and Full-Text PDF

Duck wastes as a potential reservoir of novel antibiotic resistance genes.

Sci Total Environ 2021 Jun 27;771:144828. Epub 2021 Jan 27.

National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China; Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, South China Agricultural University, Guangzhou, China. Electronic address:

Overuse of antibiotics in animal husbandry has led to an increase of antibiotic resistance microorganisms as well as antibiotic-resistance genes (ARGs). Duck farming in China is practiced on a large and diverse scale and the overuse of antibiotics in this field is gaining attention recently. We evaluated the diversity of ARGs from five duck farms using a functional metagenomic approach and constructed five libraries. Read More

View Article and Full-Text PDF

Toothbrush microbiomes feature a meeting ground for human oral and environmental microbiota.

Microbiome 2021 01 31;9(1):32. Epub 2021 Jan 31.

Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, USA.

Background: While indoor microbiomes impact our health and well-being, much remains unknown about taxonomic and functional transitions that occur in human-derived microbial communities once they are transferred away from human hosts. Toothbrushes are a model to investigate the potential response of oral-derived microbiota to conditions of the built environment. Here, we characterize metagenomes of toothbrushes from 34 subjects to define the toothbrush microbiome and resistome and possible influential factors. Read More

View Article and Full-Text PDF
January 2021

Antimicrobial Resistance and Bacteriophages: An Overlooked Intersection in Water Disinfection.

Trends Microbiol 2021 Jun 23;29(6):517-527. Epub 2021 Jan 23.

Catalan Institute for Water Research (ICRA), 17003 Girona, Spain; University of Girona, 17004 Girona, Spain.

This article focuses on how bacteriophages (phages), antibiotic-resistance genes (ARGs), and disinfection practices intersect. Phages are considered to be the most abundant biological entities on Earth and they have the potential to transfer genes (including ARGs) among their bacterial hosts. In the urban water cycle, phages are used as indicators of fecal pollution and surrogates for human viral pathogens but they are also known to withstand common disinfection treatments deployed to produce safe drinking/reclaimed water. Read More

View Article and Full-Text PDF

Nanopore-based metagenomics analysis reveals prevalence of mobile antibiotic and heavy metal resistome in wastewater.

Ecotoxicology 2021 Jan 18. Epub 2021 Jan 18.

University of Massachusetts Lowell, Lowell, MA, 01854, USA.

In-depth studies of the microbiome and mobile resistome profile of different environments is central to understanding the role of the environment in antimicrobial resistance (AMR), which is one of the urgent threats to global public health. In this study, we demonstrated the use of a rapid (and easily portable) sequencing approach coupled with user-friendly bioinformatics tools, the MinION (Oxford Nanopore Technologies), on the evaluation of the microbial as well as mobile metal and antibiotic resistome profile of semi-rural wastewater. A total of 20 unique phyla, 43 classes, 227 genera, and 469 species were identified in samples collected from the Amherst Wastewater Treatment Plant, both from primary and secondary treated wastewater. Read More

View Article and Full-Text PDF
January 2021

Effect of immobilized anthraquinone-2-sulfonate on antibiotic resistance genes and microbial community in biofilms of anaerobic reactors.

J Environ Manage 2021 Mar 14;282:111967. Epub 2021 Jan 14.

Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.

Quinone compounds could significantly accelerate anaerobic biotransformation of refractory pollutants. However, the effect of quinone compounds application on the propagation of antibiotic resistance genes (ARGs) in the bio-treatment of these pollutants-containing wastewater is not available. In this study, the catalytic performance of anthraquinone-2-sulfonate immobilized on polyurethane foam (AQS-PUF), changes of ARGs, mobile gene elements (MGEs) and microbial community structure attached on AQS-PUF and PUF in the up-flow anaerobic bioreactors were investigated. Read More

View Article and Full-Text PDF

Plastisphere enrich antibiotic resistance genes and potential pathogenic bacteria in sewage with pharmaceuticals.

Sci Total Environ 2021 May 9;768:144663. Epub 2021 Jan 9.

National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.

Microplastics (MPs) and pharmaceuticals are common emerging pollutants in sewage, and their coexistence may have more negative effects on the environments. This study chose tetracycline (TC), ampicillin (AMP) and triclosan (TCS) to investigate the responses of antibiotic resistance genes (ARGs) and microbial communities on different MPs (polyvinyl chloride (PVC), polyethylene (PE)) biofilms (plastisphere). The adsorption capacity of three pharmaceuticals on PVC and PE decreased in the order of AMP > TC > TCS. Read More

View Article and Full-Text PDF

Metagenomic insights into dissemination of antibiotic resistance across bacterial genera in wastewater treatment.

Chemosphere 2021 May 7;271:129563. Epub 2021 Jan 7.

Civil Engineering Department, New Mexico State University, Las Cruces, NM, 88003, USA. Electronic address:

The aim of this study was to evaluate the impacts of conventional wastewater treatment processes including secondary treatment and chlorination on the removal of antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARB), and to assess the association of ARGs with their potential hosts in each treatment process. The results showed chlorination with subinhibitory concentration (<8 mg/L) resulted in an increased ARB number in the disinfection effluent. qPCR analysis indicated secondary treatment increased relative abundance of ARGs in remaining bacteria whereas disinfection reduced the relative abundance of those genes effectively. Read More

View Article and Full-Text PDF