Evaluating the occurrence frequency of horizontal gene transfer induced by different degrees of heavy metal stress

Review Agricultural Engineering

Microhabitat drive microbial anabolism to promote carbon sequestration during composting

Zimin Wei et al.

Summary: Composting organic waste into stable carbon is environmentally friendly, but the complex environment and microbial community can limit the directional transformation of organic carbon. Increasing humus yield may promote carbon fixation.

BIORESOURCE TECHNOLOGY (2022)

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Article Agricultural Engineering

Effect of Fenton pretreatment combined with bacterial inoculation on humification characteristics of dissolved organic matter during rice straw composting

Fengting Qu et al.

Summary: The study demonstrated that Fenton pretreatment combined with bacterial inoculation has significant effects on the humification characteristics of DOM during composting, with a particularly strong impact in the FeWI group. Fungi played a key role in DOM conversion, with the contribution rate varying in different treatment groups, indicating the importance of environmental factors in FeW and CK composting.

BIORESOURCE TECHNOLOGY (2022)

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Article Environmental Sciences

Effects of heavy metals stress on chicken manures composting via the perspective of microbial community feedback

Xiaomeng Chen et al.

Summary: This study reveals the ecological adaptation and counter-measures of bacterial community to heavy metal stress during chicken manure composting. The results show that microorganisms can quickly adapt to heavy metal stress to ensure the smooth progress of composting, and resist heavy metal stress through cooperation.

ENVIRONMENTAL POLLUTION (2022)

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Review Microbiology

Horizontal gene transfer and adaptive evolution in bacteria

Brian J. Arnold et al.

Summary: Horizontal gene transfer is a significant feature of bacterial evolution, with the potential to alter genomes but not all events may be biologically significant. Adaptive transfers can result in detectable signatures in genomes and increased transfer rates for genes with ecological relevance.

NATURE REVIEWS MICROBIOLOGY (2022)

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Article Environmental Sciences

Response of antibiotic resistance to the co-exposure of sulfamethoxazole and copper during swine manure composting

Yiqi Wu et al.

Summary: The co-existence of sulfamethoxazole and copper in composting systems increased the abundance of ARGs and MGEs. Network analysis revealed that shifts in potential host bacteria influenced the variation of ARGs. Additionally, MGEs and MRGs had significant effects on ARGs, indicating that horizontal gene transfer and heavy metals induced co-resistance could promote the dissemination of ARGs.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Article Engineering, Environmental

Livestock manure spiked with the antibiotic tylosin significantly altered soil protist functional groups

Bao-Anh T. Nguyen et al.

Summary: This study assessed the impacts of cattle and poultry manures, with or without the antibiotic tylosin, on soil protists. The results showed that manure application significantly decreased the alpha diversity of protists, with poultry manures having a stronger negative influence on the community structure of protists compared to cattle manures. Furthermore, the addition of tylosin in manure treatments had more pronounced effects on protists.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Engineering, Environmental

Stabilization of lead and cadmium in soil by sulfur-iron functionalized biochar: Performance, mechanisms and microbial community evolution

Jianhua Qu et al.

Summary: Sulfur-iron functionalized biochar (BC-Fe-S) was designed to stabilize Pb and Cd in soil, and it exhibited excellent stabilization performance. Moreover, the BC-Fe-S improved the diversity and composition of microbial community in the soil.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Environmental Sciences

Chloroxylenol at environmental concentrations can promote conjugative transfer of antibiotic resistance genes by multiple mechanisms

Yi Guo et al.

Summary: This study investigated the abilities and mechanisms of chloroxylenol (PCMX) in accelerating intergeneric conjugative transfer. The results showed that exposure to environmental concentrations of PCMX significantly increased the frequency of conjugative transfer. PCMX exposure induced damage to cell walls and membranes, resulting in excessive production of reactive oxygen species (ROS) and promoting conjugative transfer. Gene Ontology analysis revealed the impact of cell membrane permeability, pili, chemical compound transport, and energy metabolism on conjugative transfer.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Review Environmental Sciences

Evaluate the role of biochar during the organic waste composting process: A critical review

Minh Ky Nguyen et al.

Summary: The addition of biochar can improve the performance and quality of organic waste composting, reduce greenhouse gas and odorous emissions, and enhance the decomposition and humification of organic matter. However, further research is needed to clarify the physico-chemical properties of biochar and its impact on the composting process.

CHEMOSPHERE (2022)

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Article Environmental Sciences

Profiles of antibiotic- and heavy metal-related resistance genes in animal manure revealed using a metagenomic analysis

Chong Liu et al.

Summary: Research has found that the co-selection of environmentally toxic heavy metals affects the resistome in manure, with copper and zinc genes being positively correlated with multiple types of antibiotic resistance genes and forming a complex network. These results indicate that the use of heavy-metal additives in feed increases drug resistance genes in manure through co-selection, aggravating the risk of antimicrobial resistance diffusion from animal farms to manure land applications.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY (2022)

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Article Environmental Sciences

Effects of lime amendment on the organic substances changes, antibiotics removal, and heavy metals speciation transformation during swine manure composting

Zhiqiang Chen et al.

Summary: The addition of lime can accelerate the transition of organic matters, improve the maturity of compost, facilitate the removal of chlorotetracycline, and enhance the transformation of zinc.

CHEMOSPHERE (2021)

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Article Green & Sustainable Science & Technology

Effects of wastewater treatment and manure application on the dissemination of antimicrobial resistance around swine feedlots

Chong Liu et al.

Summary: China, as the world's largest swine producer and consumer, faces significant environmental risks from the use of veterinary antibiotics. Measures such as wastewater treatment and manure application may not effectively control antibiotic pollution. A study on 10 swine farms in China found that factors like heavy metals could worsen antimicrobial resistance.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Environmental Sciences

Multiple driving factors contribute to the variations of typical antibiotic resistance genes in different parts of soil-lettuce system

Xin Wen et al.

Summary: The study found that after the application of swine manure compost, the abundance of ARGs varied differently in soil, lettuce phylloplane, and endophyere. The highest level of ARGs abundance was reached in lettuce endosphere at harvest. Moreover, the diversity of soil and phylloplane bacteria increased over planting time, while endosphere bacteria remained stable.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY (2021)

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Article Environmental Sciences

Responses of bacterial communities and antibiotic resistance genes to nano-cellulose addition during pig manure composting

Xiaoxia Dai et al.

Summary: Treatment with 600 mg/kg nano-cellulose during composting effectively reduced the abundance of antibiotic resistance genes (ARGs) and weakened the selective pressure of heavy metals on microorganisms, demonstrating the positive impact of nano-cellulose on ARG pollution in poultry manure.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2021)

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Article Environmental Sciences

Response of heavy metal and antibiotic resistance genes and related microorganisms to different heavy metals in activated sludge

Fulin Sun et al.

Summary: This study examined the response of heavy metal resistant microorganisms and antibiotic resistant microorganisms to Cu and Cr stresses using metagenome, revealing a significant relationship between heavy metal resistance genes and antibiotic resistance genes, with both showing synergistic relationships. The findings imply that changes in microbial communities are the main factor driving the diversity and abundance of resistance genes.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2021)

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Review Engineering, Environmental

Effects of emerging pollutants on the occurrence and transfer of antibiotic resistance genes: A review

Guanqun Feng et al.

Summary: The paper reviews the impact and mechanisms of EPs on ARGs in the environment, discussing the regulation of HGT, increased mutagenesis, and evolution of microbial communities. It summarizes the contributions of EPs to ARG abundance and diversity, and assess the effects of EPs on HGT frequency.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Engineering, Environmental

Can biochar regulate the fate of heavy metals (Cu and Zn) resistant bacteria community during the poultry manure composting?

Sanjeev Kumar Awasthi et al.

Summary: In this study, the impact of coconut shell biochar addition on heavy metals resistance bacterial fate during poultry manure composting was evaluated. The results showed that adding 7.5% CSB could significantly reduce the abundance of HMRB, improve composting efficiency, and enhance the quality of the final product.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Environmental Sciences

Simultaneous estimation of parameters governing the vertical and horizontal transfer of antibiotic resistance genes

Sulagna Mishra et al.

Summary: The study introduces a numerical model that considers fitness cost, temperature dependency, and other factors in estimating growth and plasmid transfer rate constants during bacterial conjugation experiments. Plasmid bearing costs significantly reduce growth rates between 20 and 37 degrees Celsius. The proposed model provides a better estimation of gene transmission among different bacterial and plasmid strains.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

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Review Environmental Sciences

Heavy-Metal Phytoremediation from Livestock Wastewater and Exploitation of Exhausted Biomass

Monika Hejna et al.

Summary: Using phytoremediation to reduce wastewater pollution from livestock production helps to maintain water conservation.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH (2021)

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Article Engineering, Environmental

Multi-functional biochar preparation and heavy metal immobilization by co-pyrolysis of livestock feces and biomass waste

Chunxing Li et al.

Summary: This study investigated the co-pyrolysis of livestock feces and various biomass wastes to prepare biochar, finding that wood chips and bamboo sawdust significantly influenced the biochar characteristics by reducing ash content and increasing heating value. Co-pyrolysis of manure with rice husk or chaff produced biochar with lower pH and electrical conductivity. Addition of certain biomass led to increased residual fractions of Cu and Zn in biochar, reducing environmental risks.

WASTE MANAGEMENT (2021)

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Review Infectious Diseases

Pollution by Antibiotics and Antimicrobial Resistance in LiveStock and Poultry Manure in China, and Countermeasures

Ming Tian et al.

Summary: The demand for animal protein has increased worldwide, especially in China where large numbers of livestock and poultry are produced. Overuse of antibiotics in animal feed has caused serious environmental and health risks, particularly antimicrobial resistance. International cooperation and Chinese regulations restricting antibiotic usage are crucial for addressing these issues.

ANTIBIOTICS-BASEL (2021)

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Article Engineering, Environmental

Transmission Routes of the Microbiome and Resistome from Manure to Soil and Lettuce

Yuepeng Sun et al.

Summary: The application of animal manure can significantly affect the microbiome and resistome of surface soil, with manure and original soil being the main sources. Manure application alters the microbiome and resistome in the episphere of lettuce, with surface soil accounting for a large portion of the microbes and ARGs in the episphere. Manure-borne microbes and ARGs primarily reach the episphere through surface soil, with some further entering the endosphere.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

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Article Agricultural Engineering