1
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Mao J, Chen J, Yang L, Wang Q, Lin H, Bai Y. Combined impacts of chlorine and pharmaceutical discharge on river periphyton and zoobenthos. J Environ Sci (China) 2025; 156:725-734. [PMID: 40412970 DOI: 10.1016/j.jes.2024.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 10/10/2024] [Accepted: 10/20/2024] [Indexed: 05/27/2025]
Abstract
Following the COVID-19 outbreak, a vast array of chlorine disinfectants was used to eliminate the virus, leading to inevitable discharge into aquatic ecosystems. These environments also contain various anthropogenic micropollutants, such as pharmaceuticals, which pose threats to the survival and activities of biological communities. Consequently, the presence of discharged chlorine disinfectants and pharmaceuticals can simultaneously impact the structure and function of aquatic ecosystems. To investigate the combined effects of chlorine disinfectants and pharmaceuticals on the periphyton and zoobenthos (Limnodrilus hoffmeisteri) community composition and function, we conducted a 12-flume reactor experiment using sodium hypochlorite and representative pharmaceuticals (abundant in the Yangtze River) as influents. Results demonstrated that the discharge of chlorine disinfectants further altered the composition of river prokaryotic communities. Eukaryotic organisms within the periphyton exhibited greater resilience to chlorine exposure compared to prokaryotic communities. Metagenomic analysis revealed that prokaryotic communities with different compositions can execute similar functions, while RNA sequencing indicated that co-exposure promoted biological processes such as focal adhesion and ribosome synthesis, but inhibited activities related to nitrogen metabolism and resistance to folate antimicrobials. Additionally, co-exposure induced oxidative stress in L. hoffmeisteri, leading to stronger environmental adaptation.
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Affiliation(s)
- Jie Mao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Yangtze Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing 100038, China
| | - Junwen Chen
- Center for Water and Ecology, Tsinghua University, Beijing 100084, China
| | - Lutong Yang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Science, Beijing 100049, China
| | - Qiaojuan Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Science, Beijing 100049, China
| | - Hui Lin
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Science, Beijing 100049, China
| | - Yaohui Bai
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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2
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Ji J, Yang H, Li Y, Wang Q, Dong Y, Hu F, Wu G, Bai Z, Chai F, Liu L, Jin B. Response of the partial denitrification coupled with anaerobic ammonia oxidation system to disinfectant residues stress. JOURNAL OF HAZARDOUS MATERIALS 2025; 489:137723. [PMID: 40010223 DOI: 10.1016/j.jhazmat.2025.137723] [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: 01/11/2025] [Revised: 02/17/2025] [Accepted: 02/22/2025] [Indexed: 02/28/2025]
Abstract
The extensive use of disinfectants, especially NaClO, has resulted in chlorine disinfectant residues entering and impairing the biological treatment system. This study combined with long-term stress and transient shock of chlorine residues to comprehensively evaluate the variations of nitrogen removal performance, microbial community and antibiotic resistance genes composition in the PD/A system. The results showed that low concentration NaClO had no obvious harm to the system, but high concentration (>1 mg/L) NaClO would destroy the nitrogen removal performance of PD/A system. Interestingly, microorganisms in biofilm were more resistant to chlorine residues than that in sludge. Anaerobic ammonia oxidizing bacteria suffered more harm than denitrifying microorganisms, and chlorine residues mainly inhibited the process of converting N2H4 to N2 in anammox reaction. In addition, this study found that sludge showed a more significant increase in ARGs abundance and risk than biofilm. Moreover, risk assessments indicated that chlorine residues increased the risk of ARGs in PD/A systems.
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Affiliation(s)
- Jiantao Ji
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Haosen Yang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Ying Li
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Qiyue Wang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Yongen Dong
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Feiyue Hu
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Guanqi Wu
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Zhixuan Bai
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Fengguang Chai
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Lanhua Liu
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China.
| | - Baodan Jin
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China.
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3
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Gao X, Jia S, Ma L, Pan Y, Ye L, Zhang XX, Zhou Q, Li A, Shi P. Prolonged Exposure to Environmentally Relevant Concentrations of Chlorine Induces Heritable Antimicrobial Resistance in Disinfection Residual Pseudomonas aeruginosa. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2025; 59:3895-3905. [PMID: 39970936 DOI: 10.1021/acs.est.4c12161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2025]
Abstract
Chlorination, a crucial step in pathogen control, raises concerns due to the potential residual chlorine presence during water treatment and sanitation. However, the consequences of prolonged exposure to environmentally relevant chlorine concentrations on antimicrobial resistance (AMR) evolution and its driving mechanism in bacteria remain unclear. Therefore, this study utilized a combination of phenotypic and genotypic analyses, revealing that chlorination at concentrations of 0.2-0.4 mg/L induced enduring cross-resistance to both chlorine and multiple antibiotics (β-lactams, tetracyclines, sulfonamides, and chloramphenicol) in Pseudomonas aeruginosa after 3 days of exposure. Both Escherichia coli and P. aeruginosa exhibited outer membrane (OM) damages, evidenced by adenosine triphosphate and reactive oxygen species, though P. aeruginosa displayed stepwise OM resilience over prolonged exposure. Transcriptomic analyses of resistant P. aeruginosa unveiled heightened metabolic activity and a reinforced OM barrier after exposure. Weighted gene coexpression network analysis highlighted the pivotal role of a fortified bacterial OM, featuring activated efflux systems and modified lipopolysaccharides, in developing cross-resistance. Overexpression and mutation in mexXY-OprM and muxABC-OpmB efflux systems, along with reduced membrane electronegativity, confirmed that hereditary genetic adaptation drove AMR evolution. This study provides valuable insights into potential strategies for mitigating AMR evolution under residual chlorine disinfection.
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Affiliation(s)
- Xinran Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Shuyu Jia
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Liping Ma
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Yang Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Lin Ye
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Xu-Xiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Qing Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Peng Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
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4
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Ameen F, Al-Shwaiman HA, Almalki R, Al-Sabri AE, Sholkamy EN. Degradation of polyvinyl chloride (PVC) microplastics employing the actinobacterial strain Streptomyces gobitricini. Biodegradation 2025; 36:19. [PMID: 39920407 DOI: 10.1007/s10532-025-10115-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2024] [Accepted: 01/22/2025] [Indexed: 02/09/2025]
Abstract
The disposal of plastic materials has resulted in the huge increase of microplastics in the environment. One of the most hazardous plastic waste is polyvinyl chloride (PVC) due to its durability. A tool to remediate PVC microplastic polluted environment might be offered by microorganisms such as Actinobacteria, which has been proven to degrade PVC. Streptomyces gobitricini was isolated from soil polluted by heavy metals and plastic debris and used in a PVC microplastics degradation experiment. Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, and scanning electron microscopy (SEM) were used to study the characteristics of microplastic particles. For the incubation, the optimal pH 7.5 was determined in a preliminary experiment where also pH 5.5 and pH 9.5 were included. Three PVC concentrations (200, 400, and 800 mg/L) were incubated in Luria-Bertani broth with S. gobitricini for 90 days. After the incubation, PVC-MP particles were recovered by filtering. The percentual weight loss of microplastics was highest (66%) in 200 mg/L treatment. Relatively high reductions were observed for the higher microplastic concentrations as well (400 mg/L; 65% and 800 mg/L; 60%). The bacterial growth decreased in order 200 mg/L (3.1 ± 0.1 CFU × 105/mL), 400 mg/L (3.0 ± 0.0 CFU × 105/mL) and 800 mg/L treatment (2.7 ± 0.0 CFU × 105/mL). High hydrophobicity was observed in all treatments at the end of the incubation indicating the formation of bacterial biofilm on the surfaces of plastic particles. The highest hydrophobicity (84%) associated with the bacterial strain was observed in 200 mg/L microplastics treatment. The results show that the bacterium S. gobitricini suits for further studies to reduce PVC microplastic waste in the environment.
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Affiliation(s)
- Fuad Ameen
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Hind A Al-Shwaiman
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Rania Almalki
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ahmed E Al-Sabri
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Essam N Sholkamy
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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5
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Zhao W, Zhang B, Zheng S, Yan W, Yu X, Ye C. High temperatures promote antibiotic resistance genes conjugative transfer under residual chlorine: Mechanisms and risks. JOURNAL OF HAZARDOUS MATERIALS 2025; 483:136675. [PMID: 39603126 DOI: 10.1016/j.jhazmat.2024.136675] [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: 08/29/2024] [Revised: 11/16/2024] [Accepted: 11/25/2024] [Indexed: 11/29/2024]
Abstract
The impact of residual chlorine on the dissemination of antibiotic resistance during the distribution and storage of water has become a critical concern. However, the influence of rising temperatures attributed to global warming on this process remains ambiguous, warranting further investigation. This study investigated the effects of different temperatures (17, 27, 37, and 42°C) on the conjugative transfer of antibiotic resistance genes (ARGs) under residual chlorine (0, 0.1, 0.3, and 0.5 mg/L). The results indicated that high temperatures significantly increased the conjugative transfer frequency of ARGs in intra-species under residual chlorine. Compared to 17°C, the transfer frequencies at 27°C, 37°C, and 42°C increased by 1.07-2.43, 1.20-4.80, and 1.24-2.82 times, respectively. The promoting effect of high temperatures was mainly due to the generation of reactive oxygen species, the triggered SOS response, and the formation of pilus channels. Transcriptomic analysis demonstrated that higher temperature stimulates the electron transport chain, thereby enhancing ATP production and facilitating the processes of conjugative, as confirmed by inhibitor validation. Additionally, rising temperatures similarly promoted the frequency of conjugative transfer in inter-species and communities under residual chlorine. These further highlighted the risk of antibiotic resistance spread in extreme and prolonged high-temperature events. The increased risk of antibiotic resistance in the process of drinking water transmission under the background of climate warming is emphasized.
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Affiliation(s)
- Wenya Zhao
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Coastal Pollution Prevention and Control, Xiamen 361102, China
| | - Binghuang Zhang
- College of the Energy, Xiamen University, Xiamen 361102, China
| | - Shikan Zheng
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Coastal Pollution Prevention and Control, Xiamen 361102, China
| | - Wanli Yan
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Coastal Pollution Prevention and Control, Xiamen 361102, China
| | - Xin Yu
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Coastal Pollution Prevention and Control, Xiamen 361102, China
| | - Chengsong Ye
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Coastal Pollution Prevention and Control, Xiamen 361102, China.
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Zhang H, Jiang X, Yu Q, Cui X, Liu Y, Tremblay PL, Zhang T. A fast and sensitive colorimetric sensor for residual chlorine detection made with oxidized cellulose. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 323:124930. [PMID: 39111031 DOI: 10.1016/j.saa.2024.124930] [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: 05/10/2024] [Revised: 07/14/2024] [Accepted: 08/02/2024] [Indexed: 08/27/2024]
Abstract
Residual chlorine from widespread disinfection processes forms byproducts in water that are harmful to humans and ecosystems. Portable sensors are essential tools for the on-site monitoring of residual chlorine in environmental samples. Here, an inexpensive colorimetric sensor was developed by grafting via amidation the chromogen orthotolidine (OTO) to the surface of a TEMPO-oxidized cellulose filter paper (O-TOFP). A thorough characterization of the sensor strip demonstrated that it was highly stable and that it could be stored for a long period before usage. O-TOFP had a fast response time of 30 s, was highly selective for residual chlorine ions (ClO-) with an accuracy of at least 95 %, and exhibited an excellent limit of detection of only 0.045 mg/L when combined with smartphone image acquisition. With its many positive features, the easy-to-use and robust O-TOFP sensor described here could become a useful tool for the determination of residual chlorine in different water samples.
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Affiliation(s)
- Huan Zhang
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, PR China
| | - Xiangyang Jiang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China
| | - Qin Yu
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
| | - Xiaoman Cui
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
| | - Yu Liu
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
| | - Pier-Luc Tremblay
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, PR China; Shaoxing Institute for Advanced Research, Wuhan University of Technology, Shaoxing 312300, PR China.
| | - Tian Zhang
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, PR China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China; Shaoxing Institute for Advanced Research, Wuhan University of Technology, Shaoxing 312300, PR China.
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7
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Andriulaityte I, Valentukeviciene M, Zurauskiene R. Research on the Reusability of Bentonite Waste Materials for Residual Chlorine Removal. MATERIALS (BASEL, SWITZERLAND) 2024; 17:5647. [PMID: 39597470 PMCID: PMC11595869 DOI: 10.3390/ma17225647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2024] [Revised: 11/10/2024] [Accepted: 11/13/2024] [Indexed: 11/29/2024]
Abstract
Recyclable construction waste can be used as a low-cost material to reduce stormwater pollution caused by various pollutants. In recent years, studies have reported increased water contamination from chlorine and chlorine compounds and its negative impact on aquatic ecosystems. When assessing the need for waste recycling, circularity, and stormwater reuse, it is worth evaluating the capacities of construction waste materials to reduce stormwater pollution from residual chlorine. Laboratory experiments using bentonite waste material (bentonite clay) and sodium hypochlorite solutions were carried out to analyze the potential of bentonite clay to retain residual chlorine in stormwater and evaluate its capacity to be applied as filtration media in green infrastructure. In the first stage, the particle size distribution and texture of bentonite clay were assessed using laboratory sieve analysis and microscopy. The results of the experiments indicated that the optimal grain size to retain pollutants was 0.8-2.0 mm. The microstructure analysis showed the capacity of bentonite to retain residual chlorine. The results of the static and dynamic experiments (leaching and filtration tests) show that the bentonite clay retained up to 44% of the residual chlorine. The obtained results indicate that bentonite clay might be suitable for application as filtration media in green infrastructure to reduce stormwater contamination.
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Affiliation(s)
- Ieva Andriulaityte
- Department of Environmental Protection and Water Engineering, Faculty of Environment Engineering, Vilnius Gediminas Technical University, LT-10233 Vilnius, Lithuania;
| | - Marina Valentukeviciene
- Department of Landscape Management and Agribusiness Technologies, Faculty of Agrotechnologies, Vilniaus Kolegija, Higher Education Institution, Dvaro g. 1, LT-14165 Vilnius, Lithuania;
| | - Ramune Zurauskiene
- Department of Landscape Management and Agribusiness Technologies, Faculty of Agrotechnologies, Vilniaus Kolegija, Higher Education Institution, Dvaro g. 1, LT-14165 Vilnius, Lithuania;
- Department of Building Materials and Fire Safety, Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-10233 Vilnius, Lithuania
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8
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Lau P, Jain S, Perron GG. Water chlorination increases the relative abundance of an antibiotic resistance marker in developing sourdough starters. Microbiol Spectr 2024; 12:e0112123. [PMID: 39283274 PMCID: PMC11537093 DOI: 10.1128/spectrum.01121-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/13/2024] [Indexed: 11/07/2024] Open
Abstract
Multiple factors explain the proper development of sourdough starters. Although the role of raw ingredients and geography, among other things, have been widely studied recently, the possible effect of air quality and water chlorination on the overall bacterial communities associated with sourdough remains to be explored. Here, using 16S rRNA amplicon sequencing, we show that clean, filtered-air severely limited the presence of lactic acid bacteria in sourdough starters, suggesting that surrounding air is an important source of microorganisms necessary for the development of sourdough starters. We also show that water chlorination at levels commonly found in drinking water systems has a limited impact on the overall bacterial communities developing in sourdough starters. However, using targeted sequencing, which offers a higher resolution, we found that the abundance of integron 1, a genetic mechanism responsible for the horizontal exchange of antibiotic-resistance genes in spoilage and pathogenic bacteria, increased significantly with the level of water chlorination. Although our results suggest that water chlorination might not impact sourdough starters at a deep phylogenetic level, they indicate that it can favor the spread of genetic elements associated with spoilage bacteria. IMPORTANCE Proper development of sourdough starters is critical for making tasty and healthy bread. Although many factors contributing to sourdough development have been studied, the effect of water chlorination on the bacterial communities in sourdough has been largely ignored. Researchers used sequencing techniques to investigate this effect and found that water chlorination at levels commonly found in drinking water systems has a limited impact on the overall bacterial communities developing in sourdough starters. However, they discovered that water chlorination could increase the abundance of integron 1, a genetic mechanism responsible for the horizontal exchange of antibiotic resistance genes in spoilage and pathogenic bacteria. This suggests that water chlorination could favor the growth of key spoilage bacteria and compromise the quality and safety of the bread. These findings emphasize the importance of considering water quality when developing sourdough starters for the best possible bread.
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Affiliation(s)
- Pearson Lau
- Department of Biology, Bard College, Annandale-on-Hudson, New York, USA
| | - Swapan Jain
- Department of Chemistry and Biochemistry, Bard College, Annandale-on-Hudson, New York, USA
| | - Gabriel G. Perron
- Department of Biology, Bard College, Annandale-on-Hudson, New York, USA
- Center for Environmental Sciences & Humanities, Bard College, Annandale-on-Hudson, New York, USA
- Center for Genomics and Systems Biology, New York University, New York, New York, USA
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9
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Liu M, Kasuga I. Impact of chlorine disinfection on intracellular and extracellular antimicrobial resistance genes in wastewater treatment and water reclamation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:175046. [PMID: 39067603 DOI: 10.1016/j.scitotenv.2024.175046] [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: 04/30/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Wastewater treatment plants and water reclamation facilities are reservoirs of antimicrobial resistance genes (ARGs). These ARGs are not limited solely to intracellular DNA (inARGs) but include extracellular DNA (exARGs) present in wastewater. The release of exARGs from cells can be exacerbated by treatment processes, including chlorine disinfection, which disrupts bacterial cells. Given the potential for exARGs to drive horizontal gene transfer and contribute to the proliferation of antimicrobial resistance, it is imperative to recognize these fractions as emerging environmental pollutants. In this study, we conducted a comprehensive year-long assessment of both inARGs and exARGs, further differentiating between dissolved exARGs (Dis_exARGs) and exARGs adsorbed onto particulate matter (Ads_exARGs), within a full-scale wastewater treatment and water reclamation facility. The results revealed that Ads_exARGs comprised up to 30 % of the total ARGs in raw sewage with high biomass content. Generally, treatments at low and high doses of chlorine increased the abundance of Dis_exARGs and Ads_exARGs. The fate of ARG levels that varied depending on the type of ARGs suggested variations in the susceptibility of the host bacteria to chlorination. Moreover, co-occurrence of several potential opportunistic pathogenic bacteria and ARGs were observed. Therefore, we propose higher doses of chlorination as a prerequisite for the effective removal of inARGs and exARGs.
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Affiliation(s)
- Miaomiao Liu
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Ikuro Kasuga
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan; Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.
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10
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Xu N, Chen B, Wang Y, Lei C, Zhang Z, Ye Y, Jin M, Zhang Q, Lu T, Dong H, Shou J, Penuelas J, Zhu YG, Qian H. Integrating Anthropogenic-Pesticide Interactions Into a Soil Health-Microbial Index for Sustainable Agriculture at Global Scale. GLOBAL CHANGE BIOLOGY 2024; 30:e17596. [PMID: 39587811 DOI: 10.1111/gcb.17596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2024] [Revised: 10/27/2024] [Accepted: 10/30/2024] [Indexed: 11/27/2024]
Abstract
Soil microbiota in intensive agriculture are threatened by pesticides, economic activities, and land-use changes. However, the interactions among these anthropogenic factors remain underexplored. By analyzing 2356 soil metagenomes from around the world, we developed a comprehensive soil health-microbial index that integrates microbial diversity, nutrient cycling potential, metabolic potential, primary productivity, and health risks to assess how the soil microbiota respond to anthropogenic factors. Our results indicated that the health-microbial index was the lowest with severe pesticide contamination. Pesticides, in combination with other anthropogenic and climatic factors, exacerbate the decline in this index. Machine learning predictions suggest that the health-microbial index in approximately 26% of global farmland could decline between 2015 and 2040, even under sustainable development scenarios. Even with strategies to reduce pesticide usage, we cannot completely halt the decline in the health-microbial index. Our findings highlight that sustaining soil microbial health on a global scale requires addressing not only pesticide management but also broader anthropogenic impacts.
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Affiliation(s)
- Nuohan Xu
- Institute for Advanced Study, Shaoxing University, Shaoxing, P. R. China
- College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing, P. R. China
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Chaotang Lei
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Zhenyan Zhang
- Institute for Advanced Study, Shaoxing University, Shaoxing, P. R. China
- College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing, P. R. China
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Yangqing Ye
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Mingkang Jin
- State Key Laboratory of Urban and Regional Ecology, Research Center for eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P. R. China
| | - Qi Zhang
- Institute for Advanced Study, Shaoxing University, Shaoxing, P. R. China
- College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing, P. R. China
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Huaping Dong
- College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing, P. R. China
| | - Jianxin Shou
- Institute for Advanced Study, Shaoxing University, Shaoxing, P. R. China
| | - Josep Penuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Barcelona, Catalonia, Spain
- CREAF, Campus Universitat Autònoma de Barcelona, Barcelona, Catalonia, Spain
| | - Yong-Guan Zhu
- State Key Laboratory of Urban and Regional Ecology, Research Center for eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P. R. China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, P. R. China
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11
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Dadeh Amirfard K, Moriyama M, Suzuki S, Sano D. Effect of environmental factors on conjugative transfer of antibiotic resistance genes in aquatic settings. J Appl Microbiol 2024; 135:lxae129. [PMID: 38830804 DOI: 10.1093/jambio/lxae129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 04/25/2024] [Accepted: 06/02/2024] [Indexed: 06/05/2024]
Abstract
Antimicrobial-resistance genes (ARGs) are spread among bacteria by horizontal gene transfer, however, the effect of environmental factors on the dynamics of the ARG in water environments has not been very well understood. In this systematic review, we employed the regression tree algorithm to identify the environmental factors that facilitate/inhibit the transfer of ARGs via conjugation in planktonic/biofilm-formed bacterial cells based on the results of past relevant research. Escherichia coli strains were the most studied genus for conjugation experiments as donor/recipient in the intra-genera category. Conversely, Pseudomonas spp., Acinetobacter spp., and Salmonella spp. were studied primarily as recipients across inter-genera bacteria. The conjugation efficiency (ce) was found to be highly dependent on the incubation period. Some antibiotics, such as nitrofurantoin (at ≥0.2 µg ml-1) and kanamycin (at ≥9.5 mg l-1) as well as metallic compounds like mercury (II) chloride (HgCl2, ≥3 µmol l-1), and vanadium (III) chloride (VCl3, ≥50 µmol l-1) had enhancing effect on conjugation. The highest ce value (-0.90 log10) was achieved at 15°C-19°C, with linoleic acid concentrations <8 mg l-1, a recognized conjugation inhibitor. Identifying critical environmental factors affecting ARG dissemination in aquatic environments will accelerate strategies to control their proliferation and combat antibiotic resistance.
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Affiliation(s)
- Katayoun Dadeh Amirfard
- Department of Frontier Science for Advanced Environment, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Miyagi 980-8579, Japan
| | - Momoko Moriyama
- Department of Frontier Science for Advanced Environment, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Miyagi 980-8579, Japan
| | - Satoru Suzuki
- Center for Marine Environmental Studies, Ehime University, Bunkyōchō 2-5, Matsuyama, Ehime 790-8577, Japan
| | - Daisuke Sano
- Department of Frontier Science for Advanced Environment, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Miyagi 980-8579, Japan
- Department of Civil and Environmental Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Miyagi 980-8579, Japan
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12
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Jia Y, Zheng Z, Yang B, Zhang H, Wang Z, Liu Y. A Broad-Spectrum Horizontal Transfer Inhibitor Prevents Transmission of Plasmids Carrying Multiple Antibiotic Resistance Genes. Transbound Emerg Dis 2024; 2024:7063673. [PMID: 40303018 PMCID: PMC12017466 DOI: 10.1155/2024/7063673] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/28/2024] [Accepted: 05/14/2024] [Indexed: 05/02/2025]
Abstract
The dissemination of antimicrobial resistance (AMR) severely degrades the performance of antibiotics and constantly paralyzes the global health system. In particular, plasmid-mediated transfer of antibiotic resistance genes (ARGs) across bacteria is recognized as the primary driver. Therefore, antiplasmid transfer approaches are urgently warranted to resolve this intractable problem. Herein, we demonstrated the potential of azidothymidine (AZT), an FDA-approved anti-HIV drug, as a broad-spectrum horizontal transfer inhibitor to effectively prevent the transmission of multiple ARGs, including mcr-1, bla NDM-5, and tet(X4), both in vitro and in vivo. It was also noteworthy that the inhibitory effect of AZT was proved to be valid within and across bacterial genera under different mating conditions. Mechanistic studies revealed that AZT dissipated bacterial proton motive force, which was indispensable for ATP synthesis and flagellar motility. In addition, AZT downregulated bacterial secretion systems involving general and type IV secretion systems (T4SS). Furthermore, the thymidine kinase, which is associated with DNA synthesis, turned out to be the potential target of AZT. Collectively, our work demonstrates the broad inhibitory effect of AZT in preventing ARGs transmission, opening new horizons for controlling AMR.
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Affiliation(s)
- Yuqian Jia
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesCollege of Veterinary MedicineYangzhou UniversityYangzhouChina
| | - Zhiwan Zheng
- Department of Pathogenic BiologyWest China School of Basic Medical Sciences and Forensic MedicineSichuan UniversityChengduChina
| | - Bingqing Yang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesCollege of Veterinary MedicineYangzhou UniversityYangzhouChina
| | - Haijie Zhang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesCollege of Veterinary MedicineYangzhou UniversityYangzhouChina
| | - Zhiqiang Wang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesCollege of Veterinary MedicineYangzhou UniversityYangzhouChina
- Joint International Research Laboratory of Agriculture and Agri-Product SafetyThe Ministry of Education of ChinaYangzhou UniversityYangzhouChina
| | - Yuan Liu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesCollege of Veterinary MedicineYangzhou UniversityYangzhouChina
- Joint International Research Laboratory of Agriculture and Agri-Product SafetyThe Ministry of Education of ChinaYangzhou UniversityYangzhouChina
- Institute of Comparative MedicineYangzhou UniversityYangzhouChina
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13
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Jia S, Wang S, Zhuang Y, Gao L, Zhang X, Ye L, Zhang XX, Shi P. Free-living lifestyle preferences drive the antibiotic resistance promotion during drinking water chlorination. WATER RESEARCH 2024; 249:120922. [PMID: 38043346 DOI: 10.1016/j.watres.2023.120922] [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: 09/26/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
The risk associated with antibiotic resistance genes (ARGs) in size-fractionated bacterial community during drinking water chlorination remains unclear, and is of paramount importance for risk mitigation through process selection and optimization. This study employed metagenomic approaches to reveal the alterations of ARGs, their potential functions and hosts within the free-living and particle-associated fractions. The total relative abundance of ARGs, mobile genetic elements (MGEs), and virulence factor genes (VFGs) significantly increased in the free-living fraction after chlorination. The contribution of the free-living fraction to the ARG relative abundance rose from 16.40 ± 1.31 % to 93.62 ± 0.47 % after chlorination. Multidrug resistance genes (e.g. mexF and mexW) were major contributors, and their co-occurrence with MGEs in the free-living fraction was enhanced after chlorination. Considering multiple perspectives, including presence, mobility, and pathogenicity, chlorination led to a significant risk of the antibiotic resistome in the free-living fraction. Moreover, potential functions of ARGs, such as cell wall/membrane/envelope biogenesis, defense mechanisms, and transcription in the free-living fraction, were intensified following chlorination. Potential pathogens, including Pseudomonas aeruginosa, Pseudomonas alcaligenes, and Acinetobacter junii, were identified as the predominant hosts of multidrug resistance genes, with their increased abundances primarily contributing to the rise of the corresponding ARGs. Overall, alterations of hosts as well as enhancing mobility and biological functions could collectively aid the proliferation and spread of ARGs in the free-living fraction after chlorination. This study provides novel insights into antibiotic resistance evolution in size-fractionated bacteria community and offers a management strategy for microbiological safety in drinking water.
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Affiliation(s)
- Shuyu Jia
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Shuya Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yan Zhuang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Linjun Gao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xian Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lin Ye
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Xu-Xiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Peng Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, 163 Xianlin Road, Nanjing 210023, China.
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14
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Baig MIR, Kadu P, Bawane P, Nakhate KT, Yele S, Ojha S, Goyal SN. Mechanisms of emerging resistance associated with non-antibiotic antimicrobial agents: a state-of-the-art review. J Antibiot (Tokyo) 2023; 76:629-641. [PMID: 37605076 DOI: 10.1038/s41429-023-00649-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/27/2023] [Accepted: 07/20/2023] [Indexed: 08/23/2023]
Abstract
Although the development of resistance by microorganisms to antimicrobial drugs has been recognized as a global public health concern, the contribution of various non-antibiotic antimicrobial agents to the development of antimicrobial resistance (AMR) remains largely neglected. The present review discusses various chemical substances and factors other than typical antibiotics, such as preservatives, disinfectants, biocides, heavy metals and improper chemical sterilization that contribute to the development of AMR. Furthermore, it encompasses the mechanisms like co-resistance and co-selection, horizontal gene transfer, changes in the composition and permeability of cell membrane, efflux pumps, transposons, biofilm formation and enzymatic degradation of antimicrobial chemicals which underlie the development of resistance to various non-antibiotic antimicrobial agents. In addition, the review addresses the resistance-associated changes that develops in microorganisms due to these agents, which ultimately contribute to the development of resistance to antibiotics. In order to prevent the indiscriminate use of chemical substances and create novel therapeutic agents to halt resistance development, a more holistic scientific approach might provide diversified views on crucial factors contributing to the persistence and spread of AMR. The review illustrates the common and less explored mechanisms contributing directly or indirectly to the development of AMR by non-antimicrobial agents that are commonly used.
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Affiliation(s)
- Mirza Ilyas Rahim Baig
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, Maharashtra, 400056, India
| | - Pramod Kadu
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, Maharashtra, 400056, India.
| | - Pradip Bawane
- Department of Pharmacognosy, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule, Maharashtra, 424001, India
| | - Kartik T Nakhate
- Department of Pharmacology, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule, Maharashtra, 424001, India
| | - Santosh Yele
- Department of Pharmacognosy, SVKM's NMIMS, School of Pharmacy & Technology Management, Hyderabad, 509301, India
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Sameer N Goyal
- Department of Pharmacology, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule, Maharashtra, 424001, India
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15
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Gu Q, Lin T, Wei X, Zhang Y, Wu S, Yang X, Zhao H, Wang C, Wang J, Ding Y, Zhang J, Wu Q. Prevalence of antimicrobial resistance in a full-scale drinking water treatment plant. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118396. [PMID: 37331316 DOI: 10.1016/j.jenvman.2023.118396] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 05/27/2023] [Accepted: 06/12/2023] [Indexed: 06/20/2023]
Abstract
Antibiotic resistance in drinking water has received increasing attention in recent years. In this study, the occurrence and abundance of antibiotic resistance genes (ARGs) in a drinking water treatment plant (DWTP) was comprehensively investigated using metagenomics. Bioinformatics analysis showed that 381 ARG subtypes belonging to 15 ARG types were detected, and bacitracin had the highest abundance (from 0.26 × 10-2 to 0.86 copies/cell), followed by multidrug (from 0.57 × 10-1 to 0.47 copies/cell) and sulfonamide (from 0.83 × 10-2 to 0.35 copies/cell). Additionally, 933 ARG-carrying contigs (ACCs) were obtained from the metagenomic data, among which 153 contigs were annotated as pathogens. The most abundant putative ARG host was Staphylococcus (7.9%), which most frequently carried multidrug ARGs (43.2%). Additionally, 38 high-quality metagenome-assembled genomes (MAGs) were recovered, one of which was identified as Staphylococcus aureus (Bin.624) and harboured the largest number of ARGs (n = 16). Using the cultivation technique, 60 isolates were obtained from DWTP samples, and Staphylococcus spp. (n = 11) were found to be dominant in all isolates, followed by Bacillus spp. (n = 17). Antimicrobial susceptibility testing showed that most Staphylococcus spp. were multidrug resistant (MDR). These results deepen our understanding of the distribution profiles of ARGs and antibiotic resistant bacteria (ARB) in DWTPs for potential health risk evaluation. Our study also highlights the need for new and efficient water purification technologies that can be introduced and applied in DWTPs.
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Affiliation(s)
- Qihui Gu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Tao Lin
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China; School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, Guangdong, PR China
| | - Xianhu Wei
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Youxiong Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Shi Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Xiaojuan Yang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Hui Zhao
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Chufang Wang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Juan Wang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Yu Ding
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China; Department of Food Science and Engineering, Institute of Food Safety and Nutrition, College of Science and Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, 510070, PR China.
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16
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Zhang J, Xu Z, Chu W, Ju F, Jin W, Li P, Xiao R. Residual chlorine persistently changes antibiotic resistance gene composition and increases the risk of antibiotic resistance in sewer systems. WATER RESEARCH 2023; 245:120635. [PMID: 37738943 DOI: 10.1016/j.watres.2023.120635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/06/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
During the COVID-19 pandemic, excessive amounts of disinfectants and their transformation products entered sewer systems worldwide, which was an extremely rare occurrence before. The stress of residual chlorine and disinfection by-products is not only likely to promote the spread of antibiotic resistance genes (ARGs), but also leads to the enrichment of chlorine-resistant bacteria that may also be resistant to antibiotics. Therefore, the potential impact of such discharge on ARG composition should be studied and the health risks should be assessed. Thus, this study combined high-throughput 16S rRNA gene amplicon sequencing and metagenomic analysis with long-term batch tests that involved two stages of stress and recovery to comprehensively evaluate the impact of residual chlorine on the microbial community and ARG compositions in sewer systems. The tests demonstrated that the disturbance of the microbial community structure by residual chlorine was reversible, but the change in ARG composition was persistent. This study found that vertical propagation and horizontal gene transfer jointly drove ARG composition succession in the biofilm, while the driving force was mainly horizontal gene transfer in the sediment. In this process, the biocide resistance gene (BRG) subtype chtR played an important role in promoting co-selection with ARGs through plasmids and integrative and conjugative elements. Moreover, it was further shown that the addition of sodium hypochlorite increased the risk of ARGs to human health, even after discontinuation of dosing, signifying that the impact was persistent. In general, this study strengthens the co-selection theory of ARGs and BRGs, and calls for improved disinfection strategies and more environmentally friendly disinfectants.
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Affiliation(s)
- Jingyi Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Zuxin Xu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Wenhai Chu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Feng Ju
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, Zhejiang 310030, China
| | - Wei Jin
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Peng Li
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, China; College of Resources and Environmental Engineering, Shandong Agriculture and Engineering University, Jinan, Shandong 250100, China
| | - Rong Xiao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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17
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Xu N, Qiu D, Zhang Z, Wang Y, Chen B, Zhang Q, Wang T, Hong W, Zhou NY, Penuelas J, Gillings M, Zhu YG, Qian H. A global atlas of marine antibiotic resistance genes and their expression. WATER RESEARCH 2023; 244:120488. [PMID: 37604017 DOI: 10.1016/j.watres.2023.120488] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/18/2023] [Accepted: 08/13/2023] [Indexed: 08/23/2023]
Abstract
Oceans serve as global reservoirs of antibiotic-resistant bacteria and antibiotic resistance genes (ARGs). However, little is known about the traits and expression of ARGs in response to environmental factors. We analyzed 347 metagenomes and 182 metatranscriptomes to determine the distribution, hosts, and expression of ARGs in oceans. Our study found that the diversity and abundance of ARGs varied with latitude and depth. The core marine resistome mainly conferred glycopeptide and multidrug resistance. The hosts of this resistome were mainly limited to the core marine microbiome, with phylogenetic barriers to the horizontal transfer of ARGs, transfers being more frequent within species than between species. Sixty-five percent of the marine ARGs identified were expressed. More than 90% of high-risk ARGs were more likely to be expressed. Anthropogenic activity might affect the expression of ARGs by altering nitrate and phosphate concentrations and ocean temperature. Machine-learning models predict >97% of marine ARGs will change expression by 2100. High-risk ARGs will shift to low latitudes and regions with high anthropogenic activity, such as the Pacific and Atlantic Oceans. Certain ARGs serve a dual role in antibiotic resistance and potentially participate in element cycling, along with other unknown functions. Determining whether changes in ARG expression are beneficial to ecosystems and human health is challenging without comprehensive understanding of their functions. Our study identified a core resistome in the oceans and quantified the expression of ARGs for the development of future control strategies under global change.
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Affiliation(s)
- Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Danyan Qiu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310012, China
| | - Wenjie Hong
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310012, China
| | - Ning-Yi Zhou
- State Key Laboratory of Microbial Metabolism, and School of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Josep Penuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Barcelona, Catalonia 08193, Spain; CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia 08193, Spain
| | - Michael Gillings
- ARC Centre of Excellence in Synthetic Biology, School of Natural Sciences, Macquarie University, NSW 2109, Australia
| | - Yong-Guan Zhu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
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18
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Iancu MA, Profir M, Roşu OA, Ionescu RF, Cretoiu SM, Gaspar BS. Revisiting the Intestinal Microbiome and Its Role in Diarrhea and Constipation. Microorganisms 2023; 11:2177. [PMID: 37764021 PMCID: PMC10538221 DOI: 10.3390/microorganisms11092177] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
The gut microbiota represents a community of microorganisms (bacteria, fungi, archaea, viruses, and protozoa) that colonize the gut and are responsible for gut mucosal structural integrity and immune and metabolic homeostasis. The relationship between the gut microbiome and human health has been intensively researched in the past years. It is now widely recognized that gut microbial composition is highly responsible for the general health of the host. Among the diseases that have been linked to an altered gut microbial population are diarrheal illnesses and functional constipation. The capacity of probiotics to modulate the gut microbiome population, strengthen the intestinal barrier, and modulate the immune system together with their antioxidant properties have encouraged the research of probiotic therapy in many gastrointestinal afflictions. Dietary and lifestyle changes and the use of probiotics seem to play an important role in easing constipation and effectively alleviating diarrhea by suppressing the germs involved. This review aims to describe how probiotic bacteria and the use of specific strains could interfere and bring benefits as an associated treatment for diarrhea and constipation.
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Affiliation(s)
- Mihaela Adela Iancu
- Department of Family Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Monica Profir
- Department of Oncology, Elias University Emergency Hospital, 011461 Bucharest, Romania; (M.P.); (O.A.R.)
| | - Oana Alexandra Roşu
- Department of Oncology, Elias University Emergency Hospital, 011461 Bucharest, Romania; (M.P.); (O.A.R.)
| | - Ruxandra Florentina Ionescu
- Department of Morphological Sciences, Cell and Molecular Biology and Histology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
- Department of Cardiology I, “Dr. Carol Davila” Central Military Emergency Hospital, 010825 Bucharest, Romania
| | - Sanda Maria Cretoiu
- Department of Morphological Sciences, Cell and Molecular Biology and Histology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Bogdan Severus Gaspar
- Surgery Clinic, Emergency Clinical Hospital, 014461 Bucharest, Romania;
- Department of Surgery, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
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19
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Liu S, Gao Y, Chen J, Li J, Zhang H. Responses of soil bacterial community structure to different artificially restored forests in open-pit coal mine dumps on the loess plateau, China. Front Microbiol 2023; 14:1198313. [PMID: 37577417 PMCID: PMC10416249 DOI: 10.3389/fmicb.2023.1198313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023] Open
Abstract
Artificial vegetation restoration is an effective method for improving soil quality. In areas experiencing coal mine subsidence, the microbial community is essential for reconstructing the ecological balance of the soil. Studies are needed to examine how soil microbial community structure respond to different artificial forest restoration types and ages, especially over long-term periods. Therefore, in this study, 10, 20, and 30-year trials were chosen with two restoration types: Pinus tabuliformis (PT) and Ulmus pumila (UP). The objective was to determine how various types and ages of forest restoration affect the structure of soil bacterial communities, as well as the soil environmental factors driving these changes. The results showed that artificial 30-year restoration for both PT and UP can improve soil physical and chemical properties more than restoration after 10 and 20 years. The soil bacterial community structure remarkably differed among the different forest types and restoration ages. The bacterial diversity was higher in UP than in PT; the alpha diversity at longer restoration years (30 and 20) was significantly higher than at 10 years for both PT and UP. Moreover, soil nutrients and pH were the primary soil environmental factors driving bacterial community structure in the PT and UP. Finally, the integrated fertility index (IFI) at 30 years of restoration was considerably higher for PT and UP, and thus, is more beneficial to the restoration of soil after coal mining. Our findings are useful for studying improvement in soil quality and the restoration of the ecological environment in mining areas.
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Affiliation(s)
- Shuang Liu
- Institute of Loess Plateau, Shanxi University, Taiyuan, China
| | - Yuru Gao
- Institute of Loess Plateau, Shanxi University, Taiyuan, China
| | - Jianwen Chen
- Institute of Loess Plateau, Shanxi University, Taiyuan, China
| | - Junjian Li
- Institute of Loess Plateau, Shanxi University, Taiyuan, China
| | - Hong Zhang
- College of Environment and Resources, Shanxi University, Taiyuan, China
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Hu Z, Yang L, Liu Z, Han J, Zhao Y, Jin Y, Sheng Y, Zhu L, Hu B. Excessive disinfection aggravated the environmental prevalence of antimicrobial resistance during COVID-19 pandemic. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163598. [PMID: 37094669 PMCID: PMC10122561 DOI: 10.1016/j.scitotenv.2023.163598] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 04/01/2023] [Accepted: 04/15/2023] [Indexed: 05/03/2023]
Abstract
During COVID-19 pandemic, chemicals from excessive consumption of pharmaceuticals and disinfectants i.e., antibiotics, quaternary ammonium compounds (QACs), and trihalomethanes (THMs), flowed into the urban environment, imposing unprecedented selective pressure to antimicrobial resistance (AMR). To decipher the obscure character pandemic-related chemicals portrayed in altering environmental AMR, 40 environmental samples covering water and soil matrix from surroundings of Wuhan designated hospitals were collected on March 2020 and June 2020. Chemical concentrations and antibiotic resistance gene (ARG) profiles were revealed by ultra-high-performance liquid chromatography-tandem mass spectrometry and metagenomics. Selective pressure from pandemic-related chemicals ascended by 1.4-5.8 times in March 2020 and then declined to normal level of pre-pandemic period in June 2020. Correspondingly, the relative abundance of ARGs under increasing selective pressure was 20.1 times that under normal selective pressure. Moreover, effect from QACs and THMs in aggravating the prevalence of AMR was elaborated by null model, variation partition and co-occurrence network analyses. Pandemic-related chemicals, of which QACs and THMs respectively displayed close interaction with efflux pump genes and mobile genetic elements, contributed >50 % in shaping ARG profile. QACs bolstered the cross resistance effectuated by qacEΔ1 and cmeB to 3.0 times higher while THMs boosted horizon ARG transfer by 7.9 times for initiating microbial response to oxidative stress. Under ascending selective pressure, qepA encoding quinolone efflux pump and oxa-20 encoding β-lactamases were identified as priority ARGs with potential human health risk. Collectively, this research validated the synergistic effect of QACs and THMs in exacerbating environmental AMR, appealing for the rational usage of disinfectants and the attention for environmental microbes in one-health perspective.
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Affiliation(s)
- Zhichao Hu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Lihua Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zishu Liu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jian Han
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yuxiang Zhao
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yihao Jin
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yaqi Sheng
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Lizhong Zhu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Baolan Hu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China.
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21
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Valentukeviciene M, Andriulaityte I, Chadysas V. Assessment of Residual Chlorine Interaction with Different Microelements in Stormwater Sediments. Molecules 2023; 28:5358. [PMID: 37513231 PMCID: PMC10386466 DOI: 10.3390/molecules28145358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
One consequence of intensive outdoor disinfection using chlorinated compounds is environmental pollution. It has been found that disinfectants are the most effective tool to avoid the spread of infections and viruses. Studies have shown that the use of chlorine-based disinfectants (sodium hypochlorite) leaves residual chlorine and other disinfection byproducts in the environment. They also have harmful effects on, inter alia, water quality, ecosystems, as well as exacerbating the corrosion of surfaces. To meet regulatory standards, monitoring of the presence of residual chlorine in the environment is vitally important. The aim of this study is to analyse the occurrence of residual chlorine in stormwater after outdoor disinfection using sodium hypochlorite and to investigate its interaction with different microelements as well their possible impacts. Stormwater samples collected at permanently disinfected locations were analysed via X-ray absorption spectroscopy. The concentrations of Cl and the following elements Na, Si, K, Ca, Cr, Fe, Ni, Cu, Zn were detected and their relationship with chlorine was determined using the Python programming language. The research presents Cl concentration values (%) that vary from 0.02 to 0.04. The results of the modelling revealed strong correlations between Cl and Fe (value 0.65) and Ca (value -0.61) and the occurrence of CaCl2 and FeCl3. The strong relationship between Cl and Fe explains the significant increase in surface corrosion after disinfection with chlorine-based substances.
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Affiliation(s)
- Marina Valentukeviciene
- Department of Environmental Protection and Water Engineering, Faculty of Environment Engineering, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania
| | - Ieva Andriulaityte
- Department of Environmental Protection and Water Engineering, Faculty of Environment Engineering, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania
| | - Viktoras Chadysas
- Department of Mathematical Statistics, Faculty of Fundamentals Science, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania
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22
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Qin G, Zhang Q, Zhang Z, Chen Y, Zhu J, Yang Y, Peijnenburg WJGM, Qian H. Understanding the ecological effects of the fungicide difenoconazole on soil and Enchytraeus crypticus gut microbiome. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121518. [PMID: 36990340 DOI: 10.1016/j.envpol.2023.121518] [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: 01/12/2023] [Revised: 03/06/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Increasing knowledge of the impacts of pesticides on soil ecological communities is fundamental to a comprehensive understanding of the functional changes in the global agroecosystem industry. In this study, we examined microbial community shifts in the gut of the soil-dwelling organism Enchytraeus crypticus and functional shifts in the soil microbiome (bacteria and viruses) after 21 d of exposure to difenoconazole, one of the main fungicides in intensified agriculture. Our results demonstrated reduced body weight and increased oxidative stress levels of E. crypticus under difenoconazole treatment. Meanwhile, difenoconazole not only altered the composition and structure of the gut microbial community, but also interfered with the soil-soil fauna microecology stability by impairing the abundance of beneficial bacteria. Using soil metagenomics, we revealed that bacterial genes encoding detoxification and viruses encoding carbon cycle genes exhibited a dependent enrichment in the toxicity of pesticides via metabolism. Taken together, these findings advance the understanding of the ecotoxicological impact of residual difenoconazole on the soil-soil fauna micro-ecology, and the ecological importance of virus-encoded auxiliary metabolic genes under pesticide stress.
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Affiliation(s)
- Guoyan Qin
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Ziyao Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yiling Chen
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Jichao Zhu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yaohui Yang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, Leiden, RA 2300, Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, Netherlands
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China.
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23
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Wang Y, Ni K, Zhang Z, Xu N, Lei C, Chen B, Zhang Q, Sun L, Chen Y, Lu T, Qian H. Metatranscriptome deciphers the effects of non-antibiotic antimicrobial agents on antibiotic resistance and virulence factors in freshwater microcosms. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 258:106513. [PMID: 37001199 DOI: 10.1016/j.aquatox.2023.106513] [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: 02/28/2023] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
The emergence and transmission of antibiotic resistance genes (ARGs) and virulence factors (VFs) pose health risks to the ecosystem and humans. Understanding how non-antibiotic antimicrobial agents drive the expression of ARGs and VFs in freshwater ecosystems, however, remains large challenges. Here, we employed freshwater microcosms and performed metatranscriptomic analysis to investigate the expression profiles of ARGs and VFs in response to pollutants of non-antibiotic antimicrobial agents, including silver nanoparticles (AgNPs) and azoxystrobin. Results showed that AgNPs significantly inhibited the total expression of ARGs and VFs and decreased the number of pathogenic microorganisms expressing these genes. Azoxystrobin increased the total expression of ARGs and VFs, as well as the number of pathogens expressing VFs, but concomitantly reduced the number of pathogens expressing ARGs. Two tested pollutants dramatically changed the expression profiles of ARGs and VFs, with distinct patterns: AgNPs displayed a negative effect, while azoxystrobin showed a positive effect on their expression profiles. Our findings provided a systematical insight to demonstrate that non-antibiotic antimicrobial agents with different mechanisms of action showed various effects on ARGs and VFs, and therefore represented different ecological risks.
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Affiliation(s)
- Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Kepin Ni
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Chaotang Lei
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yiling Chen
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
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Caioni G, Benedetti E, Perugini M, Amorena M, Merola C. Personal Care Products as a Contributing Factor to Antimicrobial Resistance: Current State and Novel Approach to Investigation. Antibiotics (Basel) 2023; 12:724. [PMID: 37107085 PMCID: PMC10135053 DOI: 10.3390/antibiotics12040724] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Antimicrobial resistance (AMR) is one of the world's industrialized nations' biggest issues. It has a significant influence on the ecosystem and negatively affects human health. The overuse of antibiotics in the healthcare and agri-food industries has historically been defined as a leading factor, although the use of antimicrobial-containing personal care products plays a significant role in the spread of AMR. Lotions, creams, shampoos, soaps, shower gels, toothpaste, fragrances, and other items are used for everyday grooming and hygiene. However, in addition to the primary ingredients, additives are included to help preserve the product by lowering its microbial load and provide disinfection properties. These same substances are released into the environment, escaping traditional wastewater treatment methods and remaining in ecosystems where they contact microbial communities and promote the spread of resistance. The study of antimicrobial compounds, which are often solely researched from a toxicological point of view, must be resumed considering the recent discoveries, to highlight their contribution to AMR. Parabens, triclocarban, and triclosan are among the most worrying chemicals. To investigate this issue, more effective models must be chosen. Among them, zebrafish is a crucial study system because it allows for the assessment of both the risks associated with exposure to these substances as well as environmental monitoring. Furthermore, artificial intelligence-based computer systems are useful in simplifying the handling of antibiotic resistance data and speeding up drug discovery processes.
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Affiliation(s)
- Giulia Caioni
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Elisabetta Benedetti
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Monia Perugini
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100 Teramo, Italy; (M.P.); (M.A.); (C.M.)
| | - Michele Amorena
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100 Teramo, Italy; (M.P.); (M.A.); (C.M.)
| | - Carmine Merola
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100 Teramo, Italy; (M.P.); (M.A.); (C.M.)
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25
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Huang S, Zuo L, Cheng G, He Y, Zhang L, Han Q, Feng L. Design, synthesis and mechanism research of novel algicide based on bioactive fragments synthesis strategy. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 191:105344. [PMID: 36963926 DOI: 10.1016/j.pestbp.2023.105344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/06/2023] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
The frequency and intensity of harmful cyanobacterial blooms (HCBs) are increasing all over the world, their prevention and control have become a great challenge. In this paper, a series of 1,3,4-thiadiazole thioacetamides (T series) were designed and synthesized as potential algaecides. Among them, the compound T3 showed its best algacidal activity against Synechocystis sp. PCC 6803 (PCC 6803, EC50 = 1.51 μM) and Microcystis aeruginosa FACHB 905 (FACHB905, EC50 = 4.88 μM), which was more effective than the lead compound L1 (PCC6803, EC50 = 7.7 μM; FACHB905, EC50 = 8.8 μM) and the commercially available herbicide prometryn (PCC6803, EC50 = 4.64 μM;FACHB905, EC50 = 6.52 μM). Meanwhile, T3 showed a lower inhibitory activity (EC50 = 12.76 μM) than prometryn (EC50 = 7.98 μM) to Chlorella FACHB1227, indicating that T3 had selective inhibition to prokaryotic algae (PCC6803, FACHB905) and eukaryotic algae (FACHB1227). Furthermore, the algacidal and anti-algae activities of T3 were significantly better than those of prometryn, while the toxicity of zebrafish and human cells was less than prometryn. Electron microscope, physiological, biochemical and metabonomic analysis showed that T3 interfered with light absorption and light conversion during photosynthesis by significantly reducing chlorophyll content, thus inhibited metabolic pathways such as the Calvin cycle and TCA cycle, and eventually led to the cell rupture of cyanobacteria. These results afforded further development of effective and safe algaecides.
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Affiliation(s)
- Shi Huang
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Lingzi Zuo
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Guonian Cheng
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Yanlin He
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Liexiong Zhang
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Qiang Han
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Lingling Feng
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China.
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26
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Liu H, Yang X, Yang W, Zheng Z, Zhu J. Gut Microbiota of Freshwater Gastropod (Bellamya aeruginosa) Assist the Adaptation of Host to Toxic Cyanobacterial Stress. Toxins (Basel) 2023; 15:toxins15040252. [PMID: 37104190 PMCID: PMC10141019 DOI: 10.3390/toxins15040252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/20/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Gut microbes play a critical role in helping hosts adapt to external environmental changes and are becoming an important phenotype for evaluating the response of aquatic animals to environmental stresses. However, few studies have reported the role that gut microbes play after the exposure of gastropods to bloom-forming cyanobacteria and toxins. In this study, we investigated the response pattern and potential role of intestinal flora in freshwater gastropod Bellamya aeruginosa when exposed to toxic and non-toxic strains of Microcystis aeruginosa, respectively. Results showed that the composition of the intestinal flora of the toxin-producing cyanobacteria group (T group) changed significantly over time. The concentration of microcystins (MCs) in hepatopancreas tissue decreased from 2.41 ± 0.12 on day 7 to 1.43 ± 0.10 μg·g−1 dry weight on day 14 in the T group. The abundance of cellulase-producing bacteria (Acinetobacter) was significantly higher in the non-toxic cyanobacteria group (NT group) than that in the T group on day 14, whereas the relative abundance of MC-degrading bacteria (Pseudomonas and Ralstonia) was significantly higher in the T group than that in the NT group on day 14. In addition, the co-occurrence networks in the T group were more complex than that in the NT group at day 7 and day 14. Some genera identified as key nodes, such as Acinetobacter, Pseudomonas, and Ralstonia, showed different patterns of variation in the co-occurrence network. Network nodes clustered to Acinetobacter increased in the NT group from day 7 to day 14, whereas the interactions between Pseudomonas and Ralstonia and other bacteria almost changed from positive correlations in the D7T group to negative correlations in the D14T group. These results suggested that these bacteria not only have the ability to improve host resistance to toxic cyanobacterial stress by themselves, but they can also further assist host adaptation to environmental stress by regulating the interaction patterns within the community. This study provides useful information for understanding the role of freshwater gastropod gut flora in response to toxic cyanobacteria and reveals the underlying tolerance mechanisms of B. aeruginosa to toxic cyanobacteria.
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27
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Hao J, Liu S, Guo Z, Zhang Y, Zhang W, Li C. Effects of Disinfectants on Larval Growth and Gut Microbial Communities of Black Soldier Fly Larvae. INSECTS 2023; 14:250. [PMID: 36975935 PMCID: PMC10056710 DOI: 10.3390/insects14030250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/23/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The use of the black soldier fly has been demonstrated to be effective in the treatment of swine manure. Since the outbreaks of ASFV, prevention procedures, including manure disinfection, have changed dramatically. Glutaraldehyde (GA) and potassium peroxymonosulfate (PPMS) have been shown to be effective in the prevention of this pathogen and are thus widely used in the disinfection of swine manures, etc. However, research on the effects of disinfectants in manures on the growth of BSFL and gut microbiota is scarce. The goal of this study was to determine the effects of GA and PPMS on BSFL growth, manure reduction, and gut microbiota. In triplicate, 100 larvae were inoculated in 100 g of each type of manure compound (manure containing 1% GA treatment (GT1), manure containing 0.5% GA treatment (GT2), manure containing 1% PPMS treatment (PT1), manure containing 0.5% PPMS treatment (PT2), and manure without disinfectant (control)). After calculating the larval weight and waste reduction, the larval gut was extracted and used to determine the microbial composition. According to the results, the dry weights of the larvae fed PT1-2 (PT1: 86.7 ± 4.2 mg and PT2: 85.3 ± 1.3 mg) were significantly higher than those of the larvae fed GT1-2 (GT1: 72.5 ± 2.1 mg and GT2: 70 ± 2.8 mg) and the control (64.2 ± 5.8 mg). There was a 2.8-4.03% higher waste reduction in PT1-2 than in the control, and the waste reduction in GT1-2 was 7.17-7.87% lower than that in the control. In a gut microbiota analysis, two new genera (Fluviicola and Fusobacterium) were discovered in PT1-2 when compared to GT1-2 and the control. Furthermore, the disinfectants did not reduce the diversity of the microbial community; rather, Shannon indices revealed that the diversities of GT1-2 (GT1: 1.924 ± 0.015; GT2: 1.944 ± 0.016) and PT1 (1.861 ± 0.016) were higher than those of the control (1.738 ± 0.015). Finally, it was found that both disinfectants in swine manures at concentrations of 1% and 0.5% may be beneficial to the complexity and cooperation of BSFL gut microbiota, according to an analysis of microbial interactions.
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Affiliation(s)
- Jianwei Hao
- Department of Biological Science and Technology, Jinzhong University, Jinzhong 030600, China
| | - Shuang Liu
- Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China
| | - Zhixue Guo
- Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China
| | - Yan Zhang
- Department of Biological Science and Technology, Jinzhong University, Jinzhong 030600, China
| | - Wuping Zhang
- Xinzhou Livestock Development Center, Xinzhou 034000, China
| | - Chujun Li
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China
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28
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Yu Y, Zhang Q, Zhang Z, Xu N, Li Y, Jin M, Feng G, Qian H, Lu T. Assessment of residual chlorine in soil microbial community using metagenomics. SOIL ECOLOGY LETTERS 2023; 5:66-78. [PMCID: PMC8889059 DOI: 10.1007/s42832-022-0130-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/17/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
Chlorine-containing disinfectants have been widely used around the world for the prevention and control of the COVID-19 pandemic. However, at present, little is known about the impact of residual chlorine on the soil micro-ecological environment. Herein, we treated an experimental soil-plant-microbiome microcosm system by continuous irrigation with a low concentration of chlorine-containing water, and then analyzed the influence on the soil microbial community using metagenomics. After 14-d continuous chlorine treatment, there were no significant lasting effect on soil microbial community diversity and composition either in the rhizosphere or in bulk soil. Although metabolic functions of the rhizosphere microbial community were affected slightly by continuous chlorine treatment, it recovered to the original status. The abundance of several resistance genes changed by 7 d and recovered by 14 d. According to our results, the chlorine residue resulting from daily disinfection may present a slight long-term effect on plant growth (shoot length and fresh weight) and soil micro-ecology. In general, our study assisted with environmental risk assessments relating to the application ofchlorine-containing disinfectants and minimization of risks to the environment during disease control, such as COVID-19.
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Affiliation(s)
- Yitian Yu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
| | - Yan Li
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
| | - Mingkang Jin
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Guoqiang Feng
- School of Economics, Lanzhou University, Lanzhou, 730000 China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014 China
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29
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Qiu D, Xu N, Zhang Q, Zhou W, Wang Y, Zhang Z, Yu Y, Lu T, Sun L, Zhou NY, Peijnenburg WJGM, Qian H. Negative effects of abamectin on soil microbial communities in the short term. Front Microbiol 2022; 13:1053153. [PMID: 36545194 PMCID: PMC9760678 DOI: 10.3389/fmicb.2022.1053153] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 11/15/2022] [Indexed: 12/08/2022] Open
Abstract
With the widespread use of abamectin in agriculture, there is increasing urgency to assess the effects of abamectin on soil microorganisms. Here, we treated plant-soil microcosms with abamectin at concentrations of 0.1 and 1.0 mg/kg and quantified the impacts of abamectin on bulk and rhizosphere soil microbial communities by shotgun metagenomics after 7 and 21 days of exposure. Although abamectin was reported to be easily degradable, it altered the composition of the soil microbial communities, disrupted microbial interactions, and decreased community complexity and stability after 7 days of exposure. After treatment with abamectin at a concentration of 1.0 mg/kg, some opportunistic human diseases, and soil-borne pathogens like Ralstonia were enriched in the soil. However, most ecological functions in soil, particularly the metabolic capacities of microorganisms, recovered within 21 days after abamectin treatment. The horizontal and vertical gene transfer under abamectin treatments increased the levels of antibiotic resistance genes dissemination. Overall, our findings demonstrated the negative effects of abamectin on soil ecosystems in the short-term and highlight a possible long-term risk to public and soil ecosystem health associated with antibiotic resistance genes dissemination.
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Affiliation(s)
- Danyan Qiu
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Wenya Zhou
- College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Yitian Yu
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Ning-Yi Zhou
- State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - W. J. G. M. Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, Leiden, Netherlands,National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, Bilthoven, Netherlands
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, China,*Correspondence: Haifeng Qian,
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Parveen N, Chowdhury S, Goel S. Environmental impacts of the widespread use of chlorine-based disinfectants during the COVID-19 pandemic. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85742-85760. [PMID: 35091954 PMCID: PMC8799444 DOI: 10.1007/s11356-021-18316-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 12/21/2021] [Indexed: 05/21/2023]
Abstract
Chlorinated disinfectants are widely used in hospitals, COVID-19 quarantine facilities, households, institutes, and public areas to combat the spread of the novel coronavirus as they are effective against viruses on various surfaces. Medical facilities have enhanced their routine disinfection of indoors, premises, and in-house sewage. Besides questioning the efficiency of these compounds in combating coronavirus, the impacts of these excessive disinfection efforts have not been discussed anywhere. The impacts of chlorine-based disinfectants on both environment and human health are reviewed in this paper. Chlorine in molecular and in compound forms is known to pose many health hazards. Hypochlorite addition to soil can increase chlorine/chloride concentration, which can be fatal to plant species if exposed. When chlorine compounds reach the sewer/drainage system and are exposed to aqueous media such as wastewater, many disinfection by-products (DBPs) can be formed depending on the concentrations of natural organic matter, inorganics, and anthropogenic pollutants present. Chlorination of hospital wastewater can also produce toxic drug-derived disinfection by-products. Many DBPs are carcinogenic to humans, and some of them are cytotoxic, genotoxic, and mutagenic. DBPs can be harmful to the flora and fauna of the receiving water body and may have adverse effects on microorganisms and plankton present in these ecosystems.
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Affiliation(s)
- Naseeba Parveen
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Sudha Goel
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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31
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Huang W, Wang Z, Liu X, Zhu D, Wang Y, Wu L. The microbial community and functional indicators response to flow restoration in gradient in a simulated water flume. Front Microbiol 2022; 13:1051375. [DOI: 10.3389/fmicb.2022.1051375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/27/2022] [Indexed: 11/18/2022] Open
Abstract
Flow reduction has greatly affected the river ecological systems, and it has attracted much attention. However, less attention has been paid to response to flow restoration, especially flow restoration in gradient. Flow regime of rivers may affect river functional indicators and microbial community structure. This study simulated the ecological restoration of the flow-reduced river reach by gradiently controlling the water flow and explores the ecological response of environmental functional indicators and microbial community structure to the water flow. The results showed that gross primary productivity (GPP), ecosystem respiration rate (ER) and some water quality indices such as chemical oxygen demand, total nitrogen, and total phosphorus (TP), exhibited positive ecological responses to flow restoration in gradient. GPP and ER increased by 600.1% and 500.2%, respectively. The alpha diversity indices of the microbial community increased significantly with a flow gradient restoration. Thereinto, Shannon, Simpson, Chao1, and Ace indices, respectively, increased by 16.4%, 5.6%, 8.6%, and 6.2%. Canonical correspondence analysis indicated that water flow, Dissolved oxygen and TP were the main influencing factors for changes in bacterial community structure. Microbial community structure and composition present a positive ecological response to flow restoration in gradient. This study reveals that the main variable in the restoration of the flow-reduced river reach is the flow discharge, and it provides a feasible scheme for its ecological restoration.
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Su H, Wu C, Han P, Liu Z, Liang M, Zhang Z, Wang Z, Guo G, He X, Pang J, Wang C, Weng S, He J. The microbiome and its association with antibiotic resistance genes in the hadal biosphere at the Yap Trench. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129543. [PMID: 35870206 DOI: 10.1016/j.jhazmat.2022.129543] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The hadal biosphere, the deepest part of the ocean, is known as the least-explored aquatic environment and hosts taxonomically diverse microbial communities. However, the microbiome and its association with antibiotic resistance genes (ARGs) in the hadal ecosystem remain unknown. Here, we profiled the microbiome diversity and ARG occurrence in seawater and sediments of the Yap Trench (YT) using metagenomic sequencing. Within the prokaryote (bacteria and archaea) lineages, the main components of bacteria were Gammaproteobacteria (77.76 %), Firmicutes (8.36 %), and Alphaproteobacteria (2.25 %), whereas the major components of archaea were Nitrososphaeria (6.51 %), Nanoarchaeia (0.42 %), and Thermoplasmata (0.25 %), respectively. Taxonomy of viral contigs showed that the classified viral communities in YT seawater and sediments were dominated by Podoviridae (45.96 %), Siphoviridae (29.41 %), and Myoviridae (24.63 %). A large majority of viral contigs remained uncharacterized and exhibited endemicity. A total of 48 ARGs encoding resistance to 12 antibiotic classes were identified and their hosts were bacteria and viruses. Novel ARG subtypes mexFYTV-1, mexFYTV-2, mexFYTV-3, vanRYTV-1, vanSYTV-1 (carried by unclassified viruses), and bacAYTB-1 (carried by phylum Firmicutes) were detected in seawater samples. Overall, our findings imply that the hadal environment of the YT is a repository of viral and ARG diversity.
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Affiliation(s)
- Hualong Su
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Chengcheng Wu
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Peiyun Han
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Zixuan Liu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Mincong Liang
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Zheng Zhang
- Baidu International Technology (Shenzhen), Shenzhen 518062, China
| | - Zhike Wang
- Hainan Guodun Information Development, Haikou 570206, China
| | - Guangyu Guo
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Xinyi He
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianhu Pang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Cheng Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Shaoping Weng
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianguo He
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China; State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
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Cerna‐Vargas JP, Marcos‐Torres FJ. Antidepressants: a new front in the war against antibiotics resistance. Environ Microbiol 2022; 24:4984-4986. [DOI: 10.1111/1462-2920.16208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/27/2022]
Affiliation(s)
- Jean Paul Cerna‐Vargas
- Dept. of Environmental Protection Estación Experimental del Zaidín‐CSIC Granada Spain
- Departamento de Biotecnología‐Biología Vegetal Universidad Politécnica de Madrid Madrid Spain
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Zhang J, Zhang Q, Zhang Z, Zhou Z, Lu T, Sun L, Qian H. Evaluation of phoxim toxicity on aquatic and zebrafish intestinal microbiota by metagenomics and 16S rRNA gene sequencing analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:63017-63027. [PMID: 35449330 DOI: 10.1007/s11356-022-20325-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
Phoxim is one of the main organophosphorus pesticides used in agricultural production. However, little information is known about how it affects the aquatic microbial community and the intestinal microbiota of fish. Herein, we utilized shotgun metagenomics and 16S rRNA gene sequencing to reveal the aquatic eco-risk of phoxim. Seven days of phoxim exposure significantly changed the composition of aquatic microbial community, obliterated the interactions between microorganisms, and thus reduced the complexity and stability of the microbial community. During long-time exposure (i.e., 14 days), most of the ecological functions were restored due to the redundancy of the microbial community. However, phoxim exposure promoted the dissemination of elfamycin resistance gene. The zebrafish gut microbial community also recovered from a temporary ecological disorder of aquatic microbiota, but phoxim continually affected zebrafish growth and swimming behavior. Overall, our results demonstrated that phoxim exposure significantly changed the structure and function of the microbial community and displayed a negative impact on freshwater ecosystems in a short exposure time.
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Affiliation(s)
- Jinfeng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China.
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35
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Ke M, Feng L, Huang S, Lu T, Yu Z, Yang Y, Hu H, Peijnenburg WJGM, Feng L, Qian H. Development of a Potentially New Algaecide for Controlling Harmful Cyanobacteria Blooms Which is Ecologically Safe and Selective. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10134-10143. [PMID: 35972278 DOI: 10.1021/acs.jafc.2c02489] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Harmful cyanobacterial blooms (HCBs) caused by Microcystis aeruginosa are of great concern as they negatively affect the aquatic environment and human health. Chemical methods could rapidly eradicate HCBs and have been used for many decades. However, many chemical reagents are not recommended to eliminate HCBs in the long term, given the possible destructive and toxic effects of the chemicals employed on non-target aquatic organisms. We developed a new algaecide, 2-((1,3,4-thiadiazol-2-yl)thio)-N-(4-chlorophenyl) acetamide (Q2), to control harmful cyanobacteria while being environmentally friendly and selective. In our study, Q2 effectively inhibited cyanobacterial growth, especially of M. aeruginosa, but did not affect eukaryotic algae in test concentrations. A critical mechanism was revealed by transcriptome and metagenomic results showing that Q2 affects multiple cellular targets of cyanobacteria for HCB control, including the destruction of organelles, damage in the photosynthesis center, as well as inhibition of gas vesicle growth, and these changes can be highly relevant to the decrease of quorum-sensing functional KEGG pathways. Furthermore, Q2 did not affect the microbial composition and could recover the disrupted aquatic functional pathways in a short period. This is different from the impact on ecosystem functioning of the traditionally used harmful algaecide diuron. All these results verified that Q2 could be friendly to the aquatic environment, providing a new directional choice in managing HCBs in the future.
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Affiliation(s)
- Mingjing Ke
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
| | - Lan Feng
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
| | - Shi Huang
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education; College of Chemistry, Central China Normal University, Wuhan430079, China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
| | - Zhitao Yu
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
| | - Yaohui Yang
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
| | - Hang Hu
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
| | - Willie J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, Leiden2300 RA, The Netherlands
- Center for Safety of Substances and Products, National Institute of Public Health and the Environment (RIVM), P.O. Box 1, Bilthoven3720, The Netherlands
| | - Lingling Feng
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education; College of Chemistry, Central China Normal University, Wuhan430079, China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou310014, China
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36
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Zhu L, Li R, Yan Y, Cui L. Urbanization drives the succession of antibiotic resistome and microbiome in a river watershed. CHEMOSPHERE 2022; 301:134707. [PMID: 35487363 DOI: 10.1016/j.chemosphere.2022.134707] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 04/02/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
Urbanization is a process of ecosystem evolution mediated by human activities. One of the main consequences is the alteration of antibiotic resistome and microbiome in aquatic environment, which may transfer from water to sediments and exert a long-term health concern to aquatic animals and even humans. However, the role of urbanization in shaping resistome and microbiome in water and sediments is largely unknown. Here, a typical watershed with a significant gradient of urbanization was selected, and the resistome and microbiome in both water and sediments were profiled. In water, the relative abundance of ARGs and bacterial diversity increased gradually along the urbanization, but were relatively stable in sediments. The abundance of potential multidrug-resistant bacteria in peri-urban and urban water were significantly higher than rural water, while in sediments, unique potential multidrug-resistant bacteria were detected at different urbanization levels. Population size was identified as the key factor shaping the ARGs profiles. Finally, environmental risk assessment based on the projection pursuit regression model suggested that the water in urban region had higher potential environmental risk of antibiotic resistance, in contrary to the sediments in rural and peri-urban regions. Our findings revealed distinct responses of water and sediment to urbanization in terms of antibiotic resistome and microbiome. This work provides important guide for hierarchically controlling ARGs dissemination in watershed.
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Affiliation(s)
- Longji Zhu
- Key Lab of Urban Environment and Health, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Ruilong Li
- Key Lab of Urban Environment and Health, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; School of Marine Science, Guangxi University, Nanning, 530004, China
| | - Yu Yan
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Li Cui
- Key Lab of Urban Environment and Health, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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37
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Ye C, Feng M, Chen Y, Zhang Y, Chen Q, Yu X. Dormancy induced by oxidative damage during disinfection facilitates conjugation of ARGs through enhancing efflux and oxidative stress: A lagging response. WATER RESEARCH 2022; 221:118798. [PMID: 35779456 DOI: 10.1016/j.watres.2022.118798] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Disinfection is known to greatly alter bacterial characteristics in water, and high horizontal gene transfer (HGT) frequency occurs in eutrophic conditions. Interestingly, these two seemingly irrelevant phenomena were closely linked by a lagging response of the increased conjugation frequency probably via daily water disinfection in this study. Three disinfection methods (UV, chlorine, and UV/chlorine) were selected to investigate the increased frequency of conjugation of ARGs during the stage of continuing culture after disinfection. The results showed that the conjugative transfer frequency was inhibited for all disinfection treatments after 24 h of co-incubation. Unexpectedly, after 3-7 days of co-cultivation, the HGT frequencies were increased by 2.71-5.61-fold and 5.46-13.96-fold in chlorine (30 min) and UV/chlorine (1 min) groups compared to the control, but not in UV-irradiated groups. A neglected lagging response was found for the first time, i.e., oxidative disinfection-induced dormancy promotes conjugative transfer of ARGs. Furthermore, mechanistic insights were gained from (1) membrane permeability, (2) conjugation-regulated system, (3) efflux pump system, and (4) oxidative stress system, suggesting the critical role of enhancing efflux and oxidative stress in the propagation of ARGs. Finally, the known instantaneous effect of oxidation disinfection was compared to address the controversial debate in this research field, proposing that the dormancy level of donor bacteria is the key to evaluating whether it can promote the HGT process. This study has important environmental implications for elucidating the transmission of ARGs after oxidation disinfection.
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Affiliation(s)
- Chengsong Ye
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Mingbao Feng
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China.
| | - Yuqi Chen
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Yiting Zhang
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Qian Chen
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Xin Yu
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China.
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Zhang Z, Wang Y, Chen B, Lei C, Yu Y, Xu N, Zhang Q, Wang T, Gao W, Lu T, Gillings M, Qian H. Xenobiotic pollution affects transcription of antibiotic resistance and virulence factors in aquatic microcosms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 306:119396. [PMID: 35525510 DOI: 10.1016/j.envpol.2022.119396] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/08/2022] [Accepted: 04/30/2022] [Indexed: 06/14/2023]
Abstract
Antibiotic resistance genes (ARGs) and virulence factors (VFs) are critical threats to human health. Their abundance in aquatic ecosystems is maintained and enhanced via selection driven by environmental xenobiotics. However, their activity and expression in these environments under xenobiotic stress remains unknown. Here ARG and VF expression profiles were examined in aquatic microcosms under ciprofloxacin, glyphosate and sertraline hydrochloride treatment. Ciprofloxacin increased total expression of ARGs, particularly multidrug resistance genes. Total expression of ARGs and VFs decreased significantly under glyphosate and sertraline treatments. However, in opportunistic human pathogens, these agents increased expression of both ARGs and VFs. Xenobiotic pollutants, such as the compounds we tested here, have the potential to disrupt microbial ecology, promote resistance, and increase risk to human health. This study systematically evaluated the effects of environmental xenobiotics on transcription of ARGs and VFs, both of which have direct relevance to human health. Transcription of such genes has been overlooked in previous studies.
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Affiliation(s)
- Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Chaotang Lei
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yitian Yu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, 310012, PR China
| | - Wenwen Gao
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, 310012, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Michael Gillings
- ARC Centre of Excellence in Synthetic Biology, Faculty of Science and Engineering, Macquarie University, NSW, 2109, Australia
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China.
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Chen B, Pan Y, Chen Y, Zhang Z, Yang Z, Zheng M, Lu T, Jiang L, Qian H. TiO 2 nanoparticles exert an adverse effect on aquatic microbial communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154942. [PMID: 35367556 DOI: 10.1016/j.scitotenv.2022.154942] [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: 01/09/2022] [Revised: 03/25/2022] [Accepted: 03/27/2022] [Indexed: 06/14/2023]
Abstract
Titanium dioxide nanoparticle (n-TiO2) is a widely used nanomaterial, which is inevitably released as a residue into aquatic ecosystems during material production and usage. However, the effects of n-TiO2 on aquatic microbial communities have not been completely elucidated. This study examined the toxic effects of n-TiO2 on eukaryotic and prokaryotic microbial communities in freshwater environments. We determined that n-TiO2 had a greater inhibitory effect on the growth of eukaryotic algae than cyanobacteria in monocultures. A similar phenomenon was observed in a microcosm experiment, revealing that n-TiO2 slightly reduced the content of chlorophyll-a but evidently increased the phycocyanin content. Moreover, the alpha diversity of the eukaryotic community was not affected, whereas its beta diversity increased with exposure to n-TiO2. Although n-TiO2 altered the composition of freshwater microbial communities, it did not change the functions of the prokaryotic community, which might be attributed to the functional redundancy of microbiota. Co-occurrence network analysis indicated that n-TiO2 destabilized the freshwater community, especially the eukaryotic community, and potentially disturbed the aquatic ecosystem. Our study revealed that the ecological risk of n-TiO2 on aquatic microbial communities is complex; hence, rational utilization of n-TiO2 should be emphasized.
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Affiliation(s)
- Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yizhou Pan
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yiling Chen
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhihan Yang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Meng Zheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Liying Jiang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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40
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Kang J, Zhang Z, Chen Y, Zhou Z, Zhang J, Xu N, Zhang Q, Lu T, Peijnenburg WJGM, Qian H. Machine learning predicts the impact of antibiotic properties on the composition and functioning of bacterial community in aquatic habitats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154412. [PMID: 35276139 DOI: 10.1016/j.scitotenv.2022.154412] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/01/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
In the past decades, hundreds of antibiotics have been isolated from microbial metabolites or have been artificially synthesized for protecting humans, animals and crops from microbial infections. Their everlasting usage results in impacts on the microbial community composition and causes well-known collateral damage to the functioning of microbial communities. Nevertheless, the impact of different antibiotic properties on aquatic microbial communities have so far only poorly been disentangled. Here we characterized the environmental risk of 50 main kinds of antibiotics from 9 classes at a concentration of 10 μg/L for aquatic bacterial communities via metadata analysis combined with machine learning. Metadata analysis showed that the alpha diversity of the bacterial community increased only after treatment with aminoglycoside and β-lactam antibiotics, while its structure was changed by almost all tested antibiotics. The antibiotic treatment also disturbed the functions of the bacterial community, especially with regard to metabolic pathways, including amino acids, cofactors, vitamins, xenobiotics and carbohydrate metabolism. The critical characteristics (atom stereocenter count, number of hydrogen atoms in the antibiotic, and the adipose water coefficient) of antibiotics affecting the composition of the bacterial community in aquatic habitats were screened by machine learning. The key characteristics of antibiotics affecting the function bacterial communities were the number of hydrogen atoms, molecular weight and complexity. In summary, by developing machine learning models and by performing metadata analysis, this study provides the relationship between the properties of antibiotics and their adverse impacts on aquatic microbial communities from a macro perspective. The study also provides guidance for the rational design of antibiotics.
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Affiliation(s)
- Jian Kang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Yiling Chen
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, PR China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Jinfeng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, 2300, RA, Leiden, the Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, the Netherlands
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China.
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Zhou Y, Qin Y, Zhou H, Zhang T, Feng J, Xie D, Feng L, Peng H, He H, Cai M. Design, synthesis, high algicidal potency, and putative mode of action of new 2-cyclopropyl-4-aminopyrimidine hydrazones. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 184:105098. [PMID: 35715037 DOI: 10.1016/j.pestbp.2022.105098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/05/2022] [Accepted: 04/12/2022] [Indexed: 06/15/2023]
Abstract
Control of cyanobacteria harmful algal blooms remains a global challenge. In the present study, a series of novel 2-cyclopropyl-4-aminopyrimidine hydrazones were designed and synthesized as potential algicides. Compounds 4a, 4b, 4h, 4j, 4k, 4l, and 4m showed potent inhibition against Synechocystis sp. PCC6803 (median effective concentration, EC50 = 1.1 to 1.7 μM) and Microcystis aeruginosa FACHB905 (EC50 = 1.2 to 2.0 μM), more potent than, or comparably with, copper sulfate (PCC6803, EC50 = 1.8 μM; FACHB905, EC50 = 2.2 μM) and prometryne (PCC6803, EC50 = 12.3 μM; FACHB905, EC50 = 7.2 μM). Compound 4k exhibited algicidal activity in an expanded culture system, and was less toxic than copper sulfate to zebrafish. Electron microscope analyses showed that 4k damaged cyanobacterial cells and decreased the number of thylakoid lamellae. Transcriptomic and qPCR analyses suggest that 4k interfered photosynthesis-related pathways. Treatment with 4k significantly decreased the maximum quantum yield of photosystem II and the photosynthetic electron transfer rate, and the resulting reactive oxygen species damaged thylakoid membranes and photosystem I. The results suggest that 4k is a potential lead for further development of effective and safe algicides.
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Affiliation(s)
- Yuan Zhou
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Yingying Qin
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Huan Zhou
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Tuotuo Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Jiangtao Feng
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Dan Xie
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Lingling Feng
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Hao Peng
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Hongwu He
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China.
| | - Meng Cai
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China.
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Zhang M, Zhou Z, Zhang J, Yu Y, Sun L, Lu T, Qian H. Metagenomic ecotoxicity assessment of trace difenoconazole on freshwater microbial community. CHEMOSPHERE 2022; 294:133742. [PMID: 35090847 DOI: 10.1016/j.chemosphere.2022.133742] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Difenoconazole, a typical triazole fungicide, inhibits the activity of cytochrome P450 enzyme in fungi, and is extensively used in protecting fruits, vegetables, and cereal crops. However, reports elucidating the effects of difenoconazole on aquatic microbial communities are limited. Our study showed that difenoconazole promoted microalgae growth at concentrations ranging from 0.1 to 5 μg/L, which was similar with its environmental residual concentrations. Metagenomic analysis revealed that the aquatic microbial structure could self-regulate to cope with difenoconazole-induced stress by accumulating bacteria exhibiting pollutant degrading abilities. In the short-term, several functional pathways related to xenobiotic biodegradation and analysis were upregulated to provide ability for aquatic microbial community to process xenobiotic stress. Moreover, most disturbed ecological functions were recovered due to the redundancy of microbial communities after prolonged exposure. Furthermore, the risks associated with the dissemination of antibiotic resistance genes were enhanced by difenoconazole in the short-term. Overall, our study contributes to a comprehensive understanding of the difenoconazole-induced ecological impacts and the behavior of aquatic microbial communities that are coping with xenobiotic stress.
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Affiliation(s)
- Mengwei Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China; Department of Jianhu, Zhejiang Industry Polytechnic College, Shaoxing, 312000, PR China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Jinfeng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yitian Yu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China.
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Chen H, Shen X, Ying Y, Li X, Chen L, Shen C, Wen Y. Effect of trace elements in the toxicity of copper to Chlamydomonas reinhardtii. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:576-585. [PMID: 35266473 DOI: 10.1039/d1em00521a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Copper sulfate (CuSO4) is widely used in the control of algal blooms. Cu can promote or inhibit algal growth, while also affecting trace element uptake, therefore, the response mechanisms of algae cells under Cu2+ interference should be studied. In this study, wild-type Chlamydomonas reinhardtii (C. reinhardtii) and wall-less mutant C. reinhardtii were selected as the research objects. Except for the cell wall, these two algae were physiologically the same. While manipulating the concentration of Cu, the accumulation of Cu, Fe, Zn, and Mn by the two algal cell types was studied. The cell wall hindered the accumulation of Cu by cells and alleviated the toxicity of Cu to C. reinhardtii. The addition of Cu increased the accumulation of Fe by both cell types. In an environment with excess Cu, the total amount of Zn and Mn accumulated by cells also increased. On the one hand, this may be due to the synergistic and antagonistic effects of trace elements in the adsorption and uptake process, and on the other hand, it may be due to the changes in metal speciation in the culture medium. In addition, the difference in the total accumulation of various trace elements between wild-type and wall-less-type C. reinhardtii may be due to the structure and function differences between cell wall and cell membrane. At the same time, by measuring the changes in the levels of glutathione (GSH) in algal cells, the relevant mechanisms underlying the algae's uptake of trace elements by algae were further explored.
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Affiliation(s)
- Hui Chen
- College of Science and Technology, Ningbo University, Cixi 315302, China
| | - Xin Shen
- College of Science and Technology, Ningbo University, Cixi 315302, China
| | - Yiping Ying
- College of Science and Technology, Ningbo University, Cixi 315302, China
| | - Xiang Li
- College of Science and Technology, Ningbo University, Cixi 315302, China
| | - Lili Chen
- College of Science and Technology, Ningbo University, Cixi 315302, China
| | - Chensi Shen
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yuezhong Wen
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China.
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Deng Y, Debognies A, Zhang Q, Zhang Z, Zhou Z, Zhang J, Sun L, Lu T, Qian H. Effects of ofloxacin on the structure and function of freshwater microbial communities. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 244:106084. [PMID: 35078055 DOI: 10.1016/j.aquatox.2022.106084] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
Ofloxacin (OFL) is a broad-spectrum fluoroquinolone antibiotic frequently used in clinic for treating bacterial infections. The discharged OFL would inevitably enter into aquatic ecosystems, affecting the growth of non-target microorganisms, which may result in micro-ecosystem imbalance. To the best of our knowledge, researches in this area are rather sparse. The present study evaluated the response of photosynthetic microorganisms (cyanobacteria, eukaryotic algae) and aquatic microbial community to OFL in a microcosm. Results showed that ofloxacin presented an inhibitory effect on the growth Microcystis aeruginosa. Although 0.1 mg/L OFL has no significant impact on alpha diversity of the microbial communities, it obviously altered the structure and decreased the species interaction of prokaryotic community by reducing the capacities of nitrogen fixation, photosynthetic and metabolic capacity of the microbial community. This study pointed out that the residual OFL in water would disturb the balance of the aquatic micro-ecology, suggesting that more attentions should be given to the negative effects of antibiotics and other bioactive pollutants on aquatic environments.
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Affiliation(s)
- Yu Deng
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
| | - Andries Debognies
- Faculty of Bioscience Engineering, Ghent University Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium
| | - Qi Zhang
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
| | - Jinfeng Zhang
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
| | - Liwei Sun
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
| | - Tao Lu
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China.
| | - Haifeng Qian
- College of Environment, Zhejiang University of technology, Hangzhou 310032, P.R. China
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Zhang Z, Zhang Q, Cui H, Li Y, Xu N, Lu T, Chen J, Penuelas J, Hu B, Qian H. Composition identification and functional verification of bacterial community in disease-suppressive soils by machine learning. Environ Microbiol 2022; 24:3405-3419. [PMID: 35049096 DOI: 10.1111/1462-2920.15902] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 01/12/2022] [Indexed: 12/13/2022]
Abstract
It has been widely reported that probiotic consortia in the rhizosphere can enhance the plant resistance to pathogens. However, the general composition and functional profiles of bacterial community in soils which suppress multiple diseases for various plants remain largely unknown. Here, we combined metadata analysis with machine learning to identify the general patterns of bacterial-community composition in disease-suppressive soils. Disease-suppressive soils significantly enriched Firmicutes and Actinobacteria but showed a decrease in Proteobacteria and Bacteroidetes. Our machine-learning models accurately identified the disease-conducive and -suppressive soils with 54 biomarker genera, 28 of which were potentially beneficial. We further carried out a successive passaging experiment with the susceptible rps2 mutant of Arabidopsis thaliana invaded by Pseudomonas syringae pv. tomato DC3000 (avrRpt2) for functional verification of potential beneficial bacteria. The disease-suppressive ability of Kribbella, Nocardioides and Bacillus was confirmed, and they positively activated the pathogen-associated molecular patterns-triggered immunity pathway. Results also showed that chemical control by pesticides in agricultural production decreased the disease-suppressive ability of soil. This study provides a method for accurately predicting the occurrence of multiple diseases in soil and identified potential beneficial bacteria to guide a wide range of multiple-strain biological control strategies in agricultural management.
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Affiliation(s)
- Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Hengzheng Cui
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Yan Li
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Jian Chen
- International Genome Center, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Josep Penuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Barcelona, Catalonia, 08193, Spain.,CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia, 08193, Spain
| | - Baolan Hu
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
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