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Rahman AU, Abdullah A, Faisal S, Mansour B, Yahya G. Unlocking the therapeutic potential of Nigella sativa extract: phytochemical analysis and revealing antimicrobial and antioxidant marvels. BMC Complement Med Ther 2024; 24:266. [PMID: 38997638 DOI: 10.1186/s12906-024-04470-w] [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: 01/05/2024] [Accepted: 04/05/2024] [Indexed: 07/14/2024] Open
Abstract
The growing global threat of antimicrobial resistance endangers both human and animal life, necessitating the urgent discovery of novel antimicrobial solutions. Medicinal plants hold promise as sources of potential antimicrobial compounds. In this study, we investigated the phytochemical constituents and microbicidal capabilities of the ethanolic extract from Nigella sativa (black seed). Gas chromatography analysis (GC) identified 11 compounds, among them thymoquinone, and thymol, contributing to antimicrobial and antioxidant properties. Antimicrobial assays demonstrated notable inhibition zones against broad spectra of bacteria, including Pseudomonas aeruginosa, Escherichia coli, Salmonella typhi, Staphylococcus aureus, Enterobacter, and Bacillus subtilis, along with potent antifungal activity against Aspergillus niger, Penicillium, and Candida albicans. Notably, when combined with antibiotics, the extract displayed exceptional synergistic antimicrobial efficacy. The black seed extract demonstrated membrane-damaging activity and disrupted virulence factors that protect microbes from antimicrobial agents, including the formation of bacterial biofilm and protease secretion. Thymoquinone, the primary active constituent of the extract, exhibited similar antimicrobial and ant virulence properties. In silico analysis targeting key regulators of quorum sensing and biofilm formation in P. aeruginosa, such as RhlG, LasR, and PqsR, showed a remarkable affinity of thymol and thymoquinone for these targets. Moreover, the N. sativa extract exhibited dose-dependent cytotoxicity against both the promastigote and amastigote forms of Leishmania tropica parasites, hinting at potential antiparasitic activity. In addition to its antimicrobial properties, the extract displayed potential antioxidant activity at a concentration of 400 μg/mL.
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Affiliation(s)
- Anees Ur Rahman
- Department of Health and Biological Science, Abasyn University, Peshawar, 25000, Pakistan
| | - Abdullah Abdullah
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M. Strzody 9, Gliwice, 44-100, Poland.
- Joint Doctoral School, Silesian University of Technology, Akademicka 2A, Gliwice, Poland.
| | - Shah Faisal
- Center for Health Research, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute of Biotechnology and Microbiology, Bacha Khan University, Charsadda, 24460, Pakistan
| | - Basem Mansour
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
- Department of pharmaceutical chemistry, Kut University College, Al Kut, Wasit, 52001, Iraq
| | - Galal Yahya
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Al Sharqia, 44519, Egypt.
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Amin I, Nazir R, Rather MA. Evaluation of multi-heavy metal tolerance traits of soil-borne fungi for simultaneous removal of hazardous metals. World J Microbiol Biotechnol 2024; 40:175. [PMID: 38647735 DOI: 10.1007/s11274-024-03987-z] [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: 03/03/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
The demand for environment-friendly cleanup techniques has arisen due to an increase in environmental pollutants. Fungi is the most prevalent and effective class of heavy metal-resistant microorganisms with the ability to leach metals. The objective of the present study was to isolate the fungi from the agricultural soil of Kashmir valley, investigate their multi-metal tolerance to heavy metals and evaluate the metal uptake capacities of the resistant fungi. The fungi were isolated and identified on the basis of morphological and molecular approach (ITS1 and ITS4). The tolerance limits of the isolated fungal strains to various doses of lead (Pb), cadmium (Cd), zinc (Zn), chromium (Cr), copper (Cu), nickel (Ni), and cobalt (Co) was evaluated. Five fungal strains, Aspergillus niger, Fusarium oxysporum, Fusarium verticillioides, Aspergillus fischeri, Epicoccum mackenziei were isolated from the soil samples. To the best of our knowledge, this is the first report on the study of metal resistance of Aspergillus fischeri and Epicoccum mackenziei. Among the identified fungal species, Aspergillus niger and Fusarium oxysporum were found to be most tolerant with a minimum inhibitory concentration (MIC) of 600 ppm against Cu and Cr respectively. Results indicated removal of considerable amount of heavy metals by some of the fungi. The highest metal uptake of 8.31 mg/g was found in Fusarium verticillioides for Zn. Surprisingly, these fungal strains demonstrated resistance to metal concentrations above the levels that are universally acceptable for polluted soils, and hence prove to be appealing contenders for use as bioremediation agents for cleaning up heavy metal-polluted environments.
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Affiliation(s)
- Insha Amin
- Department of Environmental Science, University of Kashmir, Srinagar, 190006, India
| | - Ruqeya Nazir
- Microbiology Research Laboratory, Centre of Research for Development (CORD), University of Kashmir, Srinagar, 190006, India.
| | - Mushtaq Ahmad Rather
- Department of Chemical Engineering, National Institute of Technology (NIT), Srinagar, 190006, India
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Alonso-del Valle A, Toribio-Celestino L, Quirant A, Pi CT, DelaFuente J, Canton R, Rocha EPC, Ubeda C, Peña-Miller R, San Millan A. Antimicrobial resistance level and conjugation permissiveness shape plasmid distribution in clinical enterobacteria. Proc Natl Acad Sci U S A 2023; 120:e2314135120. [PMID: 38096417 PMCID: PMC10741383 DOI: 10.1073/pnas.2314135120] [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: 08/27/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023] Open
Abstract
Conjugative plasmids play a key role in the dissemination of antimicrobial resistance (AMR) genes across bacterial pathogens. AMR plasmids are widespread in clinical settings, but their distribution is not random, and certain associations between plasmids and bacterial clones are particularly successful. For example, the globally spread carbapenem resistance plasmid pOXA-48 can use a wide range of enterobacterial species as hosts, but it is usually associated with a small number of specific Klebsiella pneumoniae clones. These successful associations represent an important threat for hospitalized patients. However, knowledge remains limited about the factors determining AMR plasmid distribution in clinically relevant bacteria. Here, we combined in vitro and in vivo experimental approaches to analyze pOXA-48-associated AMR levels and conjugation dynamics in a collection of wild-type enterobacterial strains isolated from hospitalized patients. Our results revealed significant variability in these traits across different bacterial hosts, with Klebsiella spp. strains showing higher pOXA-48-mediated AMR and conjugation frequencies than Escherichia coli strains. Using experimentally determined parameters, we developed a simple mathematical model to interrogate the contribution of AMR levels and conjugation permissiveness to plasmid distribution in bacterial communities. The simulations revealed that a small subset of clones, combining high AMR levels and conjugation permissiveness, play a critical role in stabilizing the plasmid in different polyclonal microbial communities. These results help to explain the preferential association of plasmid pOXA-48 with K. pneumoniae clones in clinical settings. More generally, our study reveals that species- and strain-specific variability in plasmid-associated phenotypes shape AMR evolution in clinically relevant bacterial communities.
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Affiliation(s)
- Aida Alonso-del Valle
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
| | - Laura Toribio-Celestino
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
| | - Anna Quirant
- Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana, Valencia46020, Spain
| | - Carles Tardio Pi
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca62209, México
- Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Unidad Académica Yucatán, Universidad Nacional Autónoma de México, Yucatán04510, México
| | - Javier DelaFuente
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
| | - Rafael Canton
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal-Instituto Ramon y Cajal de Investigacion Sanitaria, Madrid28034, Spain
- Centro de Investigación Biológica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid28029, Spain
| | - Eduardo P. C. Rocha
- Institut Pasteur, Université de Paris Cité, CNRS UMR3525, Microbial Evolutionary Genomics, Paris75015, France
| | - Carles Ubeda
- Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana, Valencia46020, Spain
- Centro de Investigación Biológica en Red de Epidemiología y Salud Pública, Instituto de Salud Carlos III, Madrid28029, Spain
| | - Rafael Peña-Miller
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca62209, México
| | - Alvaro San Millan
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
- Centro de Investigación Biológica en Red de Epidemiología y Salud Pública, Instituto de Salud Carlos III, Madrid28029, Spain
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Lee SY, Lee DY, Kang HJ, Yun SH, Mariano EJ, Lee J, Kim JH, Hur SJ. Analysis of changes in antibiotic resistance in the human body using an in vitro digestion model incorporating human gut microbiota. Heliyon 2023; 9:e16128. [PMID: 37251864 PMCID: PMC10209409 DOI: 10.1016/j.heliyon.2023.e16128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/12/2023] [Accepted: 05/06/2023] [Indexed: 05/31/2023] Open
Abstract
Residual antibiotics may affect human health by increasing challenges related to infection treatment due to antibiotic resistance development. Hence, determining whether residual antibiotics in the body can lead to antibiotic resistance is important. We developed a model to predict possible antibiotic resistance caused by residual antibiotics by simulating human digestion in vitro. Increased antibiotic resistance was found to be dependent on the digestion process. Ethical prediction of antibiotic resistance using fewer animals and no humans was possible by simulating the internal environment. Thus, preliminary studies to monitor antibiotic resistance that can affect human health may be safely conducted using this model.
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Affiliation(s)
- Seung Yun Lee
- Division of Applied Life Science (BK21 Four), Gyeongsang National University, Jinju, 52725, South Korea
- Institute of Agriculture & Life Science, Gyeongsang National University, Jinju, 52725, South Korea
| | - Da Young Lee
- Department of Animal Science and Technology, Chung-Ang University, Anseong, 17546, South Korea
| | - Hea Jin Kang
- Department of Animal Science and Technology, Chung-Ang University, Anseong, 17546, South Korea
| | - Seung Hyeon Yun
- Department of Animal Science and Technology, Chung-Ang University, Anseong, 17546, South Korea
| | - Ermie Jr. Mariano
- Department of Animal Science and Technology, Chung-Ang University, Anseong, 17546, South Korea
| | - Juhyun Lee
- Department of Animal Science and Technology, Chung-Ang University, Anseong, 17546, South Korea
| | - Jong Hyuk Kim
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, South Korea
| | - Sun Jin Hur
- Department of Animal Science and Technology, Chung-Ang University, Anseong, 17546, South Korea
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Zhao D, Peng Z, Fang J, Fang Z, Zhang J. Programmable and low-cost biohybrid membrane for efficient heavy metal removal from water. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Rojas-Solis D, Larsen J, Lindig-Cisneros R. Arsenic and mercury tolerant rhizobacteria that can improve phytoremediation of heavy metal contaminated soils. PeerJ 2023; 11:e14697. [PMID: 36650835 PMCID: PMC9840862 DOI: 10.7717/peerj.14697] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 12/14/2022] [Indexed: 01/13/2023] Open
Abstract
Background Mining deposits often contain high levels of toxic elements such as mercury (Hg) and arsenic (As) representing strong environmental hazards. The purpose of this study was the isolation for plant growth promoting bacteria (PGPBs) that can improve phytoremediation of such mine waste deposits. Methods We isolated native soil bacteria from the rhizosphere of plants of mine waste deposits and agricultural land that was previously mine tailings from Tlalpujahua Michoacán, Mexico, and were identified by their fatty acid profile according to the MIDI Sherlock system. Plant growth promoting traits of all bacterial isolates were examined including production of 3-indoleacetic acid (IAA), siderophores, biofilm formation, and phosphate solubilization. Finally, the response of selected bacteria to mercury and arsenic was examined an in-vitro assay. Results A total 99 bacterial strains were isolated and 48 identified, representing 34 species belonging to 23 genera. Sixty six percent of the isolates produced IAA of which Pseudomonas fluorescens TL97 produced the most. Herbaspirillum huttiense TL36 performed best in terms of phosphate solubilization and production of siderophores. In terms of biofilm formation, Bacillus atrophaeus TL76 was the best. Discussion Most of the bacteria isolates showed high level of tolerance to the arsenic (as HAsNa2O4 and AsNaO2), whereas most isolates were susceptible to HgCl2. Three of the selected bacteria with PGP traits Herbispirillum huttiense TL36, Klebsiella oxytoca TL49 and Rhizobium radiobacter TL52 were also tolerant to high concentrations of mercury chloride, this might could be used for restoring or phytoremediating the adverse environmental conditions present in mine waste deposits.
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Yasir M, Turner AK, Bastkowski S, Lott M, Holden ER, Telatin A, Page AJ, Webber MA, Charles IG. Genome-Wide Analysis of Innate Susceptibility Mechanisms of Escherichia coli to Colistin. Antibiotics (Basel) 2022; 11:antibiotics11111668. [PMID: 36421312 PMCID: PMC9687012 DOI: 10.3390/antibiotics11111668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/08/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022] Open
Abstract
Colistin is an antibiotic that has seen increasing clinical use for the treatment of human infections caused by Gram-negative pathogens, particularly due to the emergence of multidrug-resistant pathogens. Colistin resistance is also a growing problem and typically results from alterations to lipopolysaccharides mediated by phosphoethanolamine (pETn) transferase enzymes which can be encoded on the chromosome, or plasmids. In this study, we used 'TraDIS-Xpress' (Transposon Directed Insertion site Sequencing with expression), where a high-density transposon mutant library including outward facing promoters in Escherichia coli BW25113 identified genes involved in colistin susceptibility. We examined the genome-wide response of E. coli following exposure to a range of concentrations of colistin. Our TraDIS-Xpress screen confirmed the importance of overexpression of the two-component system basSR (which regulates pETn transferases) but also identified a wider range of genes important for survival in the presence of colistin, including genes encoding membrane associated proteins, DNA repair machinery, various transporters, RNA helicases, general stress response genes, fimbriae and phosphonate metabolism. Validation experiments supported a role in colistin susceptibility for novel candidate genes tested. TraDIS-Xpress is a powerful tool that expands our understanding of the wider landscape of genes involved in response to colistin susceptibility mechanisms.
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Affiliation(s)
- Muhammad Yasir
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
- Correspondence: ; Tel.: +44-1603255391
| | - A. Keith Turner
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
| | - Sarah Bastkowski
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
| | - Martin Lott
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
| | - Emma R. Holden
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
| | - Andrea Telatin
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
| | - Andrew J. Page
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
| | - Mark A. Webber
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
- Norwich Medical School, Norwich Research Park, Colney Lane, Norwich NR4 7TJ, UK
| | - Ian G. Charles
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich NR4 7UQ, UK
- Norwich Medical School, Norwich Research Park, Colney Lane, Norwich NR4 7TJ, UK
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8
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Zhang L, Lai JL, Zhang Y, Luo XG, Li ZG. Degradation of Uranium-Contaminated Decontamination Film by UV Irradiation and Microbial Biodegradation. MICROBIAL ECOLOGY 2022; 84:439-450. [PMID: 34554284 DOI: 10.1007/s00248-021-01862-0] [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: 06/18/2021] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
This research provides a complete degradation scheme for acrylic copolymer/cellulose acetate butyrate peelable decontamination films. This study analyzed the removal efficiency of uranium by peelable decontamination film. More importantly, the degradability of the films was evaluated by a combined treatment with UV radiation and microbial biodegradation. The results showed that UV radiation would rupture the surface of the decontamination films, which leaded the weight-average molecular weight decreased by 55.3% and number-average molecular weight decreased by 75.83%. Additionally, the microbial flora induced light-degradable decontamination film weight-average molecular weight and number-average molecular weight decreased by 9.3% and 30.73%, respectively. 16S rRNA microbial diversity analysis indicated that Pantoea, Xylella, Cronobacter, and Olivibacter were the major degrading bacteria genera. Among them, 4 key strains that can be stripped of decontamination films have been isolated and identified from the dominant degrading bacteria group. The results show that UV radiation combined with microbial flora can achieve rapid degradation of the decontamination films.
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Affiliation(s)
- Li Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Jin-Long Lai
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
- Engineering Research Center of Biomass Materials, Ministry of Education of, SWUST, 621010, Mianyang, China
| | - Yu Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China.
| | - Xue-Gang Luo
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Zhan-Guo Li
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
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Ismail MMF, Khalifa MM, El-Sehrawi HMA, Sabour R. Design, Synthesis and Antimicrobial Evaluation of New Arylazopyrazole and Arylazopyrazolo[1,5- a]pyrimidine Derivatives. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2020.1830811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Magda M. F. Ismail
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Maha M. Khalifa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Hend M. A. El-Sehrawi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Rehab Sabour
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
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Diba F, Khan MZH, Uddin SZ, Istiaq A, Shuvo MSR, Ul Alam ASMR, Hossain MA, Sultana M. Bioaccumulation and detoxification of trivalent arsenic by Achromobacter xylosoxidans BHW-15 and electrochemical detection of its transformation efficiency. Sci Rep 2021; 11:21312. [PMID: 34716390 PMCID: PMC8556249 DOI: 10.1038/s41598-021-00745-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 10/15/2021] [Indexed: 12/02/2022] Open
Abstract
Arsenotrophic bacteria play an essential role in lowering arsenic contamination by converting toxic arsenite [As (III)] to less toxic and less bio-accumulative arsenate [As (V)]. The current study focused on the qualitative and electrocatalytic detection of the arsenite oxidation potential of an arsenite-oxidizing bacteria A. xylosoxidans BHW-15 (retrieved from As-contaminated tube well water), which could significantly contribute to arsenic detoxification, accumulation, and immobilization while also providing a scientific foundation for future electrochemical sensor development. The minimum inhibitory concentration (MIC) value for the bacteria was 15 mM As (III). Scanning Electron Microscopy (SEM) investigation validated its intracellular As uptake capacity and demonstrated a substantial association with the MIC value. During the stationary phase, the strain’s As (III) transformation efficiency was 0.0224 mM/h. Molecular analysis by real-time qPCR showed arsenite oxidase (aioA) gene expression increased 1.6-fold in the presence of As (III) compared to the untreated cells. The immobilized whole-cell also showed As (III) conversion up to 18 days. To analyze the electrochemical oxidation in water, we developed a modified GCE/P-Arg/ErGO-AuNPs electrode, which successfully sensed and quantified conversion of As (III) into As (V) by accepting electrons; implying a functional As oxidase enzyme activity in the cells. To the best of our knowledge, this is the first report on the electrochemical observation of the As-transformation mechanism with Achromobactersp. Furthermore, the current work highlighted that our isolate might be employed as a promising candidate for arsenic bioremediation, and information acquired from this study may be helpful to open a new window for the development of a cost-effective, eco-friendly biosensor for arsenic species detection in the future.
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Affiliation(s)
- Farzana Diba
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh.,Institute of Tissue Banking and Biomaterial Research (ITBBR), Atomic Energy Research Establishment (AERE), Savar, Dhaka, 1349, Bangladesh
| | - Md Zaved Hossain Khan
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Salman Zahir Uddin
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Arif Istiaq
- Department of Stem Cell Biology, Faculty of Arts and Sciences, Kyushu University, Fukuoka, Japan.,Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Md Sadikur Rahman Shuvo
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - A S M Rubayet Ul Alam
- Department of Microbiology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M Anwar Hossain
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh.,Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Munawar Sultana
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh.
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Gendy S, Chauhan A, Agarwal M, Pathak A, Rathore RS, Jaswal R. Is Long-Term Heavy Metal Exposure Driving Carriage of Antibiotic Resistance in Environmental Opportunistic Pathogens: A Comprehensive Phenomic and Genomic Assessment Using Serratia sp. SRS-8-S-2018. Front Microbiol 2020; 11:1923. [PMID: 32973703 PMCID: PMC7468404 DOI: 10.3389/fmicb.2020.01923] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/21/2020] [Indexed: 12/04/2022] Open
Abstract
The carriage of both, heavy metal and antibiotic resistance appears to be a common trait in bacterial communities native to long-term contaminated habitats, including the Savannah River Site (SRS). There is widespread soil contamination at the SRS; a United States Department of Energy (DOE) facility with long-term contamination from past industrial and nuclear weapons production activities. To further evaluate the genomic and metabolic traits that underpin metal and antibiotic resistance, a robust mercury (Hg) and uranium (U)-resistant strain- SRS-8-S-2018, was isolated. Minimum inhibitory concentration of this strain revealed resistance to Hg (10 μg/ml) and U (5 mM), the two main heavy metal contaminants at the SRS. Metabolic assessment of strain SRS-8-S-2018 using Biolog metabolic fingerprinting analysis revealed preference for carbohydrate utilization followed by polymers, amino acids, carboxy acids, and esters; this physiological activity diminished when Hg stress was provided at 1 and 3 μg/ml and completely ceased at 5 μg/ml Hg, indicating that continued release of Hg will have negative metabolic impacts to even those microorganisms that possess high resistance ability. Development of antibiotic resistance in strain SRS-8-S-2018 was evaluated at a functional level using phenomics, which confirmed broad resistance against 70.8% of the 48 antibiotics tested. Evolutionary and adaptive traits of strain SRS-8-S-2018 were further assessed using genomics, which revealed the strain to taxonomically affiliate with Serratia marcescens species, possessing a genome size of 5,323,630 bp, 5,261 proteins (CDS), 55 genes for transfer RNA (tRNA), and an average G + C content of 59.48. Comparative genomics with closest taxonomic relatives revealed 360 distinct genes in SRS-8-S-2018, with multiple functions related to both, antibiotic and heavy metal resistance, which likely facilitates the strain’s survival in a metalliferous soil habitat. Comparisons drawn between the environmentally isolated Serratia SRS-8-S-2018 with 31 other strains revealed a closer functional association with medically relevant isolates suggesting that propensity of environmental Serratia isolates in acquiring virulence traits, as a function of long-term exposure to heavy metals, which is facilitating development, recruitment and proliferation of not only metal resistant genes (MRGs) but antibiotic resistant genes (ARGs), which can potentially trigger future bacterial pathogen outbreaks emanating from contaminated environmental habitats.
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Affiliation(s)
- Sherif Gendy
- School of Allied Health Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Ashvini Chauhan
- Environmental Biotechnology Laboratory, School of the Environment, FSH Science Research Center, Florida A&M University, Tallahassee, FL, United States
| | - Meenakshi Agarwal
- Environmental Biotechnology Laboratory, School of the Environment, FSH Science Research Center, Florida A&M University, Tallahassee, FL, United States
| | - Ashish Pathak
- Environmental Biotechnology Laboratory, School of the Environment, FSH Science Research Center, Florida A&M University, Tallahassee, FL, United States
| | - Rajesh Singh Rathore
- Environmental Biotechnology Laboratory, School of the Environment, FSH Science Research Center, Florida A&M University, Tallahassee, FL, United States
| | - Rajneesh Jaswal
- Environmental Biotechnology Laboratory, School of the Environment, FSH Science Research Center, Florida A&M University, Tallahassee, FL, United States
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12
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Announcing the Availability of a Culture Collection of Uranium-Resistant Microbial Assemblages (CURMA) Obtained from Metalliferous Soils of the Savannah River Site, USA. Microbiol Resour Announc 2020; 9:9/30/e00551-20. [PMID: 32703833 PMCID: PMC7378032 DOI: 10.1128/mra.00551-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Metagenomic assessment provides a comprehensive survey of soil microbiota; however, isolation and characterization of functionally relevant microbiota are required prior to their application(s), such as for metal remediation. Toward this end, we report the availability of a culture collection comprising uranium (U)-resistant microbial assemblages (CURMA) to the scientific community. Metagenomic assessment provides a comprehensive survey of soil microbiota; however, isolation and characterization of functionally relevant microbiota are required prior to their application(s), such as for metal remediation. Toward this end, we report the availability of a culture collection comprising uranium (U)-resistant microbial assemblages (CURMA) to the scientific community.
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