1
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Ye B, Wang Q, Ye Q, Wang D, Wang Z, Dong Z, Zou J. Effects of different combinations of koumine and gelsemine on growth performance, intestinal health, and transcriptome of Cyprinus carpio. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133130. [PMID: 38086301 DOI: 10.1016/j.jhazmat.2023.133130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 02/08/2024]
Abstract
Koumine (KM) and gelsemine (GS) have shown significant benefits in livestock production, but their potential in aquaculture remains largely unexplored. This study examined the impact of different KM and GS combinations as feed additives on C. carpio (90 fish per group, initial weight 1.95 ± 0.08 g). KM and GS were introduced in ratios of 2:2 (mg/kg), 2:1 (mg/kg), and 2:0.67 (mg/kg) over a 10-week aquaculture experiment. The results demonstrate that the 2:1 (mg/kg) group increases the villus length, muscular layer thickness, crude protein, and crude fat content. Regarding fatty acid content, KM and GS enhance the levels of various fatty acids, including the total saturated fatty acid and total monounsaturated fatty acid. Additionally, KM and GS improve the composition and function of the intestinal microbiota. The 2:1 (mg/kg) group significantly elevates the enzymatic activities of SOD, MDA, CAT and upregulates the expression of immune-related genes such as toll-like receptor 2, transforming growth factor β, and glutathione S-transferase. Transcriptomic analysis suggests that KM and GS may have potential benefits for nutrient utilization and immune regulation in C. carpio. In summary, this study provides valuable insights into the use of KM and GS as feed additives in aquaculture.
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Affiliation(s)
- Bin Ye
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Qiujie Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Qiao Ye
- School of Life Sciences, Huizhou University, Huizhou 516007, China
| | - Dongjie Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Zhenlu Wang
- College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Zaijie Dong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| | - Jixing Zou
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
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2
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Malik S, Kumar D. Perspectives of nanomaterials in microbial remediation of heavy metals and their environmental consequences: A review. Biotechnol Genet Eng Rev 2023:1-48. [PMID: 36871166 DOI: 10.1080/02648725.2023.2182546] [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: 09/12/2022] [Accepted: 02/06/2023] [Indexed: 03/06/2023]
Abstract
Nanomaterials (NMs) have diverse applications in various sectors, such as decontaminating heavy metals from drinking water, wastewater, and soil. Their degradation efficiency can be enhanced through the application of microbes. As microbial strain releases enzymes, which leads to the degradation of HMs. Therefore, nanotechnology and microbial-assisted remediation-based methods help us develop a remediation process with practical utility, speed, and less environmental toxicity. This review focuses on the success achieved for the bioremediation of heavy metals by nanoparticles and microbial strains and in their integrated approach. Still, the use of NMs and heavy metals (HMs) can negatively affect the health of living organisms. This review describes various aspects of the bioremediation of heavy materials using microbial nanotechnology. Their safe and specific use supported by bio-based technology paves the way for their better remediation. We discuss the utility of nanomaterials for removing heavy metals from wastewater, toxicity studies and issues to the environment with their practical implications. Nanomaterial assisted heavy metal degradation coupled with microbial technology and disposal issues are described along with detection methods. Environmental impact of nanomaterials is also discussed based on the recent work conducted by the researchers. Therefore, this review opens new avenues for future research with an impact on the environment and toxicity issues. Also, applying new biotechnological tools will help us develop better heavy metal degradation routes.
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Affiliation(s)
- Sachin Malik
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Sonepat, Haryana, India
| | - Dharmender Kumar
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Sonepat, Haryana, India
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3
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Li X, Li J, Zhao Q, Qiao L, Wang L, Yu C. Physiological, biochemical, and genomic elucidation of the Ensifer adhaerens M8 strain with simultaneous arsenic oxidation and chromium reduction. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129862. [PMID: 36084460 DOI: 10.1016/j.jhazmat.2022.129862] [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: 06/18/2022] [Revised: 08/12/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
This study reports the simultaneous oxidation of As(III) and reduction of the Cr(VI) strain Ensifer adhaerens M8 screened from soils around abandoned gold tailings contaminated with highly complex metals (loids). Physiological, biochemical, and genomic techniques were used to explore the mechanism. The strain M8 could simultaneously oxidize 1 mM As(III) and reduce 45.3 % 0.1 mM Cr(VI) in 16 h, and the Cr(VI) reduction rate was increased by 5.8 % compared with the addition of Cr(VI) alone. Cellular debris was the main site of M8 arsenic oxidation. Chromium reduction was dominated by the reduction of extracellular hexavalent chromium (23.80-35.67 %). The genome of M8 included one chromosome and four plasmids, and a comparison of the genomes showed that M8 had two more plasmids than strains of the same genus, which may be related to strong environmental adaptations. M8 had 10 heavy metal resistance genes (HMRs), and plasmid D had a complete cluster of arsenic resistance-oxidation-transport genes (arsOHBCCR-aioSR-aioBA-cytCmoeA-phoBBU-PstBACS-phnCDEE). The genes involved in Cr(VI) detoxification include DNA repair (RecG, ruvABC, and UvrD), Cr(VI) transport (chrA, TonB, and CysAPTW) and Cr(VI) reduction. In summary, this study provides a molecular basis for As (III) and Cr (VI) remediation.
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Affiliation(s)
- Xianhong Li
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China
| | - Jingru Li
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China
| | - Qiancheng Zhao
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China
| | - Longkai Qiao
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China
| | - Limin Wang
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China
| | - Caihong Yu
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China.
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4
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Microbial decolorization of Reactive Black 5 dye by Bacillus albus DD1 isolated from textile water effluent: kinetic, thermodynamics & decolorization mechanism. Heliyon 2022; 8:e08834. [PMID: 35198750 PMCID: PMC8844646 DOI: 10.1016/j.heliyon.2022.e08834] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 10/03/2021] [Accepted: 01/21/2022] [Indexed: 11/24/2022] Open
Abstract
Reactive Black 5 is one of the most widely used dye in textile and other industries. It is one of the significantly toxic azo dye which poses a serious threat to the environment when discharged into water bodies. A bacterial strain having potential to decolourise and degrade RB5 was isolated from textile effluent, and further identified and characterized. On the basis of morphological, biochemical, and 16s rRNA sequence analysis, the isolate was identified as Bacillus albus DD1. It showed 98% removal of RB5 from aqueous medium within 38 h under optimum parameters, pH 7, temperature 40 °C, in the presence of 1% yeast extract as a co-substrate, and 25% inoculum size at the initial dye concentration of 50 mg/l. Kinetic study revealed the decolorization reaction is a first order non- spontaneous reaction. The rate constant and reaction rate for RB5 decolourization in presence of the isolate was 0.0523 s−1 and 2.6 × 10−3 mol/m3 sec, respectively. Values for ΔH and ΔS of the decolourization reaction, determined by thermodynamic analysis, were estimated to be +20.80 kJ/mol and ΔS = −0.1 kJ/mol K, respectively. LC-MS analysis revealed that decolorization was due to degradation of RB5 by cleavage of azo-bond by the bacterium, with the formation of s 3,6,8-trihyroxynapthalene and phthalic acid as degradation products. Therefore, the bacterium Bacillus albus DD1 has potential for application in biological treatment of dye contaminated industrial waste water. Bacterial strain Bacillus albus DD1 having potential to decolourise and degrade RB5 was isolated, identified and characterized. Effect of process parameters like pH, temperature, yeast extract as a co-substrate, inoculum size and initial dye concentration on the decolorization reaction was studied, the isolate showed growth and decolorization at alkaline pH 9 and 40 °C temperature, indicating its suitability for field application. More than 98% removal of RB5 was achieved within 38 h using the bacterial isolate, and a significant negative correlation existed between RB5 decolourization and bacterial growth. Bio-decolorization process followed the first order kinetics, rate constant and reaction rate for RB5 decolourization, was 0.0523 s−1 and 2.6 × 10−3 mol/m3 sec, respectively. Reduction of azo bond and subsequent biodegradation of RB5 and were confirmed through LC-MS and 3,6,8-trihyroxynapthalene and phthalic acid were identified as degradation products.
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5
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A Unique Reverse Adaptation Mechanism Assists Bordetella pertussis in Resistance to Both Scarcity and Toxicity of Manganese. mBio 2021; 12:e0190221. [PMID: 34700381 PMCID: PMC8546581 DOI: 10.1128/mbio.01902-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The ability of bacterial pathogens to acquire essential micronutrients is critical for their survival in the host environment. Manganese plays a complex role in the virulence of a variety of pathogens due to its function as an antioxidant and enzymatic cofactor. Therefore, host cells deprive pathogens of manganese to prevent or attenuate infection. Here, we show that evolution of the human-restricted pathogen Bordetella pertussis has selected for an inhibitory duplication within a manganese exporter of the calcium:cation antiporter superfamily. Intriguingly, upon exposure to toxic levels of manganese, the nonfunctional exporter becomes operative in resister cells due to a unique reverse adaptation mechanism. However, compared with wild-type (wt) cells, the resisters carrying a functional copy of the exporter displayed strongly reduced intracellular levels of manganese and impaired growth under oxidative stress. Apparently, inactivation of the manganese exporter and the resulting accumulation of manganese in the cytosol benefited the pathogen by improving its survival under stress conditions. The inhibitory duplication within the exporter gene is highly conserved among B. pertussis strains, absent from all other Bordetella species and from a vast majority of organisms across all kingdoms of life. Therefore, we conclude that inactivation of the exporter gene represents an exceptional example of a flexible genome decay strategy employed by a human pathogen to adapt to its exclusive host.
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6
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Belcher T, Dubois V, Rivera-Millot A, Locht C, Jacob-Dubuisson F. Pathogenicity and virulence of Bordetella pertussis and its adaptation to its strictly human host. Virulence 2021; 12:2608-2632. [PMID: 34590541 PMCID: PMC8489951 DOI: 10.1080/21505594.2021.1980987] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The highly contagious whooping cough agent Bordetella pertussis has evolved as a human-restricted pathogen from a progenitor which also gave rise to Bordetella parapertussis and Bordetella bronchiseptica. While the latter colonizes a broad range of mammals and is able to survive in the environment, B. pertussis has lost its ability to survive outside its host through massive genome decay. Instead, it has become a highly successful human pathogen by the acquisition of tightly regulated virulence factors and evolutionary adaptation of its metabolism to its particular niche. By the deployment of an arsenal of highly sophisticated virulence factors it overcomes many of the innate immune defenses. It also interferes with vaccine-induced adaptive immunity by various mechanisms. Here, we review data from invitro, human and animal models to illustrate the mechanisms of adaptation to the human respiratory tract and provide evidence of ongoing evolutionary adaptation as a highly successful human pathogen.
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Affiliation(s)
- Thomas Belcher
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Violaine Dubois
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Alex Rivera-Millot
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Camille Locht
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Françoise Jacob-Dubuisson
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
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7
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Laha A, Bhattacharyya S, Sengupta S, Bhattacharyya K, GuhaRoy S. Investigation of arsenic-resistant, arsenite-oxidizing bacteria for plant growth promoting traits isolated from arsenic contaminated soils. Arch Microbiol 2021; 203:4677-4692. [PMID: 34180014 DOI: 10.1007/s00203-021-02460-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 10/21/2022]
Abstract
The problem of arsenic (As) pollution being severe warrants opting for low-cost microbial remediation strategies. The present study of identifying suitable bacterial strains led to the isolation of eleven As-tolerant strains from the As-contaminated rhizosphere soils of West Bengal, India. They were found to oxidize/reduce 55-31.6% of 5 mM As(III) and 73-37.6% of 5 mM As(V) within 12 h. The four isolates (BcAl-1, JN 73, LAR-2, and AR-30) had a high level of As(III) oxidase activity along with a higher level of As(V) and As(III) resistance. The agar diffusion assay of the isolates further confirmed their ability to endure As stress. The presence of aoxB gene was observed in these four As(III) oxidizing isolates. Evaluation of plant growth-promoting characteristics revealed that BcAl-1 (Burkholderia cepacia), JN 73 (Burkholderia metallica), AR-30 (Burkholderia cenocepacia), and LAR-2 (Burkholderia sp.) had significant plant growth-promoting characteristics (PGP), including the ability to solubilize phosphate, siderophore production, indole acetic acid-like molecules production, ACC deaminase production, and nodule formation under As stressed condition. BcAl-1 and JN 73 emerged as the most promising traits in As removal as well as plant growth promotion.
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Affiliation(s)
- Aritri Laha
- Department of Botany, West Bengal State University, Barasat, Kolkata, West Bengal, 700126, India. .,Department of Genetics and Plant Breeding, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India.
| | - Somnath Bhattacharyya
- Department of Genetics and Plant Breeding, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India
| | - Sudip Sengupta
- Department of Agricultural Chemistry and Soil Science, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India
| | - Kallol Bhattacharyya
- Department of Agricultural Chemistry and Soil Science, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India
| | - Sanjoy GuhaRoy
- Department of Botany, West Bengal State University, Barasat, Kolkata, West Bengal, 700126, India
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8
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Battaglia-Brunet F, Le Guédard M, Faure O, Charron M, Hube D, Devau N, Joulian C, Thouin H, Hellal J. Influence of agricultural amendments on arsenic biogeochemistry and phytotoxicity in a soil polluted by the destruction of arsenic-containing shells. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124580. [PMID: 33248819 DOI: 10.1016/j.jhazmat.2020.124580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 10/05/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
Agricultural soils can contain high arsenic (As) concentrations due to specific geological contexts or pollution. Fertilizer amendments could influence As speciation and mobility thus increasing its transfer to crops and its toxicity. In the present study, field-relevant amounts of fertilizers were applied to soils from a cultivated field that was a former ammunition-burning site. Potassium phosphate (KP), ammonium sulfate and organic matter (OM) were applied to these soils in laboratory experiments to assess their impact on As leaching, bioavailability to Lactuca sativa and microbial parameters. None of the fertilizers markedly influenced As speciation and mobility, although trends showed an increase of mobility with KP and a decrease of mobility with ammonium sulfate. Moreover, KP induced a small increase of As in Lactuca sativa, and the polluted soil amended with ammonium sulfate was significantly less phytotoxic than the un-amended soil. Most probable numbers of AsIII-oxidizing microbes and AsIII-oxidizing activity were strongly linked to As levels in water and soils. Ammonium sulfate negatively affected AsIII-oxidizing activity in the un-polluted soil. Whereas no significant effect on As speciation in water could be detected, amendments may have an impact in the long term.
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Affiliation(s)
| | - Marina Le Guédard
- LEB Aquitaine Transfert - ADERA, 71 Avenue Edouard Bourlaux, CS20032, 33140 Villenave d'Ornon, France; University of Bordeaux, CNRS, Laboratoire de Biogenèse Membranaire (LBM), UMR 5200, 33140 Villenave d'Ornon, France
| | - Olivier Faure
- Mines Saint-Etienne, Univ Lyon, Univ Jean Moulin, Univ Lumière, Univ Jean Monnet, ENTPE, INSA Lyon, ENS Lyon, CNRS, UMR 5600 EVS, Centre SPIN, Departement PEG, F-42023 Saint-Etienne, France
| | - Mickael Charron
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Daniel Hube
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Nicolas Devau
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Catherine Joulian
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Hugues Thouin
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Jennifer Hellal
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
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Ceballos-Escalera A, Pous N, Chiluiza-Ramos P, Korth B, Harnisch F, Bañeras L, Balaguer MD, Puig S. Electro-bioremediation of nitrate and arsenite polluted groundwater. WATER RESEARCH 2021; 190:116748. [PMID: 33360100 DOI: 10.1016/j.watres.2020.116748] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/07/2020] [Accepted: 12/12/2020] [Indexed: 06/12/2023]
Abstract
The coexistence of different pollutants in groundwater is a common threat. Sustainable and resilient technologies are required for their treatment. The present study aims to evaluate microbial electrochemical technologies (METs) for treating groundwater contaminated with nitrate (NO3-) while containing arsenic (in form of arsenite (As(III)) as a co-contaminant. The treatment was based on the combination of nitrate reduction to dinitrogen gas and arsenite oxidation to arsenate (exhibiting less toxicity, solubility, and mobility), which can be removed more easily in further post-treatment. We operated a bioelectrochemical reactor at continuous-flow mode with synthetic contaminated groundwater (33 mg N-NO3- L-1 and 5 mg As(III) L-1) identifying the key operational conditions. Different hydraulic retention times (HRT) were evaluated, reaching a maximum nitrate reduction rate of 519 g N-NO3- m3Net Cathodic Compartment d-1 at HRT of 2.3 h with a cathodic coulombic efficiency of around 100 %. Simultaneously, arsenic oxidation was complete at all HRT tested down to 1.6 h reaching an oxidation rate of up to 90 g As(III) m-3Net Reactor Volume d -1. Electrochemical and microbiological characterization of single granules suggested that arsenite at 5 mg L-1 did not have an inhibitory effect on a denitrifying biocathode mainly represented by Sideroxydans sp. Although the coexistence of abiotic and biotic arsenic oxidation pathways was shown to be likely, microbial arsenite oxidation linked to denitrification by Achromobacter sp. was the most probable pathway. This research paves the ground towards a real application for treating groundwater with widespread pollutants.
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Affiliation(s)
- Alba Ceballos-Escalera
- LEQUiA, Institute of the Environment, University of Girona, C/ Maria Aurèlia Capmany, 69, E-17003, Girona, Spain
| | - Narcís Pous
- LEQUiA, Institute of the Environment, University of Girona, C/ Maria Aurèlia Capmany, 69, E-17003, Girona, Spain
| | - Paola Chiluiza-Ramos
- Group of Environmental Microbial Ecology, Institute of Aquatic Ecology, University of Girona, C/ Maria Aurèlia Capmany, 40, E-17003, Girona, Spain
| | - Benjamin Korth
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research GmbH - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Falk Harnisch
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research GmbH - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Lluís Bañeras
- Group of Environmental Microbial Ecology, Institute of Aquatic Ecology, University of Girona, C/ Maria Aurèlia Capmany, 40, E-17003, Girona, Spain
| | - M Dolors Balaguer
- LEQUiA, Institute of the Environment, University of Girona, C/ Maria Aurèlia Capmany, 69, E-17003, Girona, Spain
| | - Sebastià Puig
- LEQUiA, Institute of the Environment, University of Girona, C/ Maria Aurèlia Capmany, 69, E-17003, Girona, Spain.
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10
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Ghosh S, Mohapatra B, Satyanarayana T, Sar P. Molecular and taxonomic characterization of arsenic (As) transforming Bacillus sp. strain IIIJ3-1 isolated from As-contaminated groundwater of Brahmaputra river basin, India. BMC Microbiol 2020; 20:256. [PMID: 32807097 PMCID: PMC7430025 DOI: 10.1186/s12866-020-01893-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 07/06/2020] [Indexed: 11/10/2022] Open
Abstract
Background Microbe-mediated redox transformation of arsenic (As) leading to its mobilization has become a serious environmental concern in various subsurface ecosystems especially within the alluvial aquifers. However, detailed taxonomic and eco-physiological attributes of indigenous bacteria from As impacted aquifer of Brahmaputra river basin has remained under-studied. Results A newly isolated As-resistant and -transforming facultative anaerobic bacterium IIIJ3–1 from As-contaminated groundwater of Jorhat, Assam was characterized. Near complete 16S rRNA gene sequence affiliated the strain IIIJ3–1 to the genus Bacillus and phylogenetically placed within members of B. cereus sensu lato group with B. cereus ATCC 14579(T) as its closest relative with a low DNA-DNA relatedness (49.9%). Presence of iC17:0, iC15:0 fatty acids and menaquinone 7 corroborated its affiliation with B. cereus group, but differential hydroxy-fatty acids, C18:2 and menaquinones 5 & 6 marked its distinctiveness. High As resistance [Maximum Tolerable Concentration = 10 mM As3+, 350 mM As5+], aerobic As3+ (5 mM) oxidation, and near complete dissimilatory reduction of As 5+ (1 mM) within 15 h of growth designated its physiological novelty. Besides O2, cells were found to reduce As5+, Fe3+, SO42−, NO3−, and Se6+ as alternate terminal electron acceptors (TEAs), sustaining its anaerobic growth. Lactate was the preferred carbon source for anaerobic growth of the bacterium with As5+ as TEA. Genes encoding As5+ respiratory reductase (arr A), As3+ oxidase (aioB), and As3+ efflux systems (ars B, acr3) were detected. All these As homeostasis genes showed their close phylogenetic lineages to Bacillus spp. Reduction in cell size following As exposure exhibited the strain’s morphological response to toxic As, while the formation of As-rich electron opaque dots as evident from SEM-EDX possibly indicated a sequestration based As resistance strategy of strain IIIJ3–1. Conclusion This is the first report on molecular, taxonomic, and ecophysiological characterization of a highly As resistant, As3+ oxidizing, and dissimilatory As5+ reducing Bacillus sp. IIIJ3–1 from As contaminated sites of Brahmaputra river basin. The strain’s ability to resist and transform As along with its capability to sequester As within the cells demonstrate its potential in designing bioremediation strategies for As contaminated groundwater and other ecosystems.
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Affiliation(s)
- Soma Ghosh
- Environmental Microbiology and Genomics Laboratory, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.,Present address: CSIR- National Environmental Engineering Research Institute, Kolkata Zonal Centre, Kolkata, 700107, India
| | - Balaram Mohapatra
- Environmental Microbiology and Genomics Laboratory, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.,Present address: Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Tulasi Satyanarayana
- Department of Microbiology, University of Delhi South Campus (UDSC), New Delhi, 110021, India.,Presently affiliated to Department of Biological Sciences and Engineering, Netaji Subhas University of Technology, Sector 3 Dwarka, New Delhi, 110078, India
| | - Pinaki Sar
- Environmental Microbiology and Genomics Laboratory, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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11
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Rahman Z, Singh VP. Bioremediation of toxic heavy metals (THMs) contaminated sites: concepts, applications and challenges. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:27563-27581. [PMID: 32418096 DOI: 10.1007/s11356-020-08903-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Heavy metal contamination is a global issue, where the prevalent contaminants are arsenic (As), cadmium (Cd), chromium (Cr)(VI), mercury (Hg), and lead (Pb). More often, they are collectively known as "most problematic heavy metals" and "toxic heavy metals" (THMs). Their treatment through a variety of biological processes is one of the prime interests in remediation studies, where heavy metal-microbe interaction approaches receive high interest for their cost effective and ecofriendly solutions. In this review, we provide an up to date information on different microbial processes (bioremediation) for the removal of THMs. For the same, emphasis is put on oxidation-reduction, biomineralization, bioprecipitation, bioleaching, biosurfactant technology, biovolatilization, biosorption, bioaccumulation, and microbe-assisted phytoremediation with their selective advantages and disadvantages. Further, the literature briefly discusses about the various setups of cleaning processes of THMs in environment under ex situ and in situ applications. Lately, the study sheds light on the manipulation of microorganisms through genetic engineering and nanotechnology for their advanced treatment approaches.
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Affiliation(s)
- Zeeshanur Rahman
- Department of Botany, Zakir Husain Delhi College, University of Delhi, Delhi, India.
- Department of Botany, University of Delhi, Delhi, India.
| | - Ved Pal Singh
- Department of Botany, University of Delhi, Delhi, India
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12
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Bagade A, Nandre V, Paul D, Patil Y, Sharma N, Giri A, Kodam K. Characterisation of hyper tolerant Bacillus firmus L-148 for arsenic oxidation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114124. [PMID: 32078878 DOI: 10.1016/j.envpol.2020.114124] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/01/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
Groundwater arsenic pollution causes millions of deaths worldwide. Long term natural and anthropogenic activities have increased arsenic levels in groundwater causing higher threats of arsenic exposure. Arsenic hyper-tolerant Firmicute Bacillus firmus L-148 was isolated from arsenic limiting Lonar lake soil, which tolerated more than 3 M arsenic and could oxidize 75 mM arsenite [As(III)] in 14 days. It oxidized As(III) in presence of heavy metals and had unusual pH optima at 9.2. B. firmus L-148 was studied at the biochemical, protein, genomic and transcript level for understanding its arsenic oxidizing machinery. The proteomic and transcript analysis exhibited the presence of ars and aio operon and supported the inducible nature of ars operon. Robust, hyper-tolerant, fast As(III) oxidizing, least nutrient requiring and multi-metal resistance qualities of the strain were used in microcosm studies for bioremediation. Artificial groundwater mimicking microcosm with 75 mM As(III) was developed. Modulation of carbon source, iron and multi metals affected growth and As(III) oxidation rate. The As(III) oxidation was recorded to be 77% in 15 days in presence of sodium acetate and Fe ions. This microcosm study can be explored for bioremediation of arsenic contaminated water and followed by precipitation using other methods.
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Affiliation(s)
- Aditi Bagade
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | - Vinod Nandre
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | - Dhiraj Paul
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, 411021, India
| | - Yugendra Patil
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Nisha Sharma
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | - Ashok Giri
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Kisan Kodam
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India.
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Lescure T, Joulian C, Charles C, Ben Ali Saanda T, Charron M, Breeze D, Bauda P, Battaglia-Brunet F. Simple or complex organic substrates inhibit arsenite oxidation and aioA gene expression in two β-Proteobacteria strains. Res Microbiol 2020; 171:13-20. [DOI: 10.1016/j.resmic.2019.09.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/04/2019] [Accepted: 09/06/2019] [Indexed: 11/30/2022]
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Banerjee A, Hazra A, Das S, Sengupta C. Groundwater inhabited Bacillus and Paenibacillus strains alleviate arsenic-induced phytotoxicity of rice plant. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:1048-1058. [PMID: 32062985 DOI: 10.1080/15226514.2020.1725871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Arsenic contamination in agricultural soil now imposing a major threat to crop productivity and causing several hazardous health effects through percolation in food chain. Bioremediation, an efficient way of soil health restoration toward sustainability offered by some soil-borne microorganisms, has been reported. The present work deals with application of two potent arsenic-tolerant bacterial strains (Bacillus thuringiensis A01 and Paenibacillus glucanolyticus B05), obtained from natural sources in modulating overall growth and antioxidant defense against arsenic-treated rice plants. Between the two, former could reduce arsenic uptake up to 56% (roots) and 85% (shoots), and the preceding one up to 31% (roots) and 65% (shoots) in a hydroponic environment. Germination percentage was noted to be enhanced significantly (p ≤ 0.05). Expression of oxidative stress defensive enzymes such as superoxide dismutase, peroxidase and catalase have been augmented at seedling stages (21 days) toward detoxification of arsenic imposed excess ROS generation. Increment of leaf Thiobarbituric acid reactive substances due to arsenic exposure have been ameliorated by both the bacterial application. Phenolic and flavonoid mediated free radical scavenging ability of the test plants elevated significantly (p ≤ 0.05). The present work revealed that, selected bacterial strains can perform efficient bioremediation against arsenic pollutant rice cultivation.
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Affiliation(s)
| | - Anjan Hazra
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
| | - Sauren Das
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata, India
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15
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Kapahi M, Sachdeva S. Bioremediation Options for Heavy Metal Pollution. J Health Pollut 2019; 9:191203. [PMID: 31893164 PMCID: PMC6905138 DOI: 10.5696/2156-9614-9.24.191203] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 08/20/2019] [Indexed: 05/02/2023]
Abstract
BACKGROUND Rapid industrialization and anthropogenic activities such as the unmanaged use of agro-chemicals, fossil fuel burning and dumping of sewage sludge have caused soils and waterways to be severely contaminated with heavy metals. Heavy metals are non-biodegradable and persist in the environment. Hence, remediation is required to avoid heavy metal leaching or mobilization into environmental segments and to facilitate their extraction. OBJECTIVES The present work briefly outlines the environmental occurrence of heavy metals and strategies for using microorganisms for bioremediation processes as reported in the scientific literature. METHODS Databases were searched from different libraries, including Google Scholar, Medline and Scopus. Observations across studies were then compared with the standards for discharge of environmental pollutants. DISCUSSION Bioremediation employs microorganisms for removing heavy metals. Microorganisms have adopted different mechanisms for bioremediation. These mechanisms are unique in their specific requirements, advantages, and disadvantages, the success of which depends chiefly upon the kind of organisms and the contaminants involved in the process. CONCLUSIONS Heavy metal pollution creates environmental stress for human beings, plants, animals and other organisms. A complete understanding of the process and various alternatives for remediation at different steps is needed to ensure effective and economic processes. COMPETING INTERESTS The authors declare no competing financial interests.
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Affiliation(s)
- Meena Kapahi
- Department of Biotechnology, Manav Rachna International Institute of Research and Studies, Faridabad, India
- Department of Chemistry, Manav Rachna University, Faridabad, India
| | - Sarita Sachdeva
- Department of Biotechnology, Manav Rachna International Institute of Research and Studies, Faridabad, India
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Chakraborty A, Aziz Chowdhury A, Bhakat K, Islam E. Elevated level of arsenic negatively influences nifH gene expression of isolated soil bacteria in culture condition as well as soil system. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1953-1966. [PMID: 30767095 DOI: 10.1007/s10653-019-00261-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 02/06/2019] [Indexed: 06/09/2023]
Abstract
Comprehensive studies on the effect of arsenic (As) on free-living diazotrophs that play a crucial role in soil fertility by nitrogen fixation are still scanty. Here, we isolated three free-living bacteria from rice field with potential nitrogen-fixing ability and investigated the impact of As on their nifH gene expression and extracellular polysaccharide (EPS) production in culture condition and soil system. 16S rRNA sequence analysis showed that the isolated bacteria were affiliated to β-Proteobacteria, γ-Proteobacteria and Firmicutes. As(III) exposure to bacterial isolates followed by RT-qPCR analysis revealed that elevated levels of As reduced the expression of nifH gene in selective bacteria, both in culture medium and soil condition. We also noticed reduced production of EPS under higher concentration of As. All the three bacteria showed high tolerance to As(III), able to oxidize As and exhibited significant plant growth-promoting traits. This investigation indicated that an environment exposed with higher concentration of As might perturbed the activity of free-living diazotrophs in agricultural soil system.
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Affiliation(s)
- Arindam Chakraborty
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Atif Aziz Chowdhury
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Kiron Bhakat
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Ekramul Islam
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India.
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Ample Arsenite Bio-Oxidation Activity in Bangladesh Drinking Water Wells: A Bonanza for Bioremediation? Microorganisms 2019; 7:microorganisms7080246. [PMID: 31398879 PMCID: PMC6723331 DOI: 10.3390/microorganisms7080246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/26/2019] [Accepted: 07/31/2019] [Indexed: 11/17/2022] Open
Abstract
Millions of people worldwide are at risk of arsenic poisoning from their drinking water. In Bangladesh the problem extends to rural drinking water wells, where non-biological solutions are not feasible. In serial enrichment cultures of water from various Bangladesh drinking water wells, we found transfer-persistent arsenite oxidation activity under four conditions (aerobic/anaerobic; heterotrophic/autotrophic). This suggests that biological decontamination may help ameliorate the problem. The enriched microbial communities were phylogenetically at least as diverse as the unenriched communities: they contained a bonanza of 16S rRNA gene sequences. These related to Hydrogenophaga, Acinetobacter, Dechloromonas, Comamonas, and Rhizobium/Agrobacterium species. In addition, the enriched microbiomes contained genes highly similar to the arsenite oxidase (aioA) gene of chemolithoautotrophic (e.g., Paracoccus sp. SY) and heterotrophic arsenite-oxidizing strains. The enriched cultures also contained aioA phylotypes not detected in the previous survey of uncultivated samples from the same wells. Anaerobic enrichments disclosed a wider diversity of arsenite oxidizing aioA phylotypes than did aerobic enrichments. The cultivatable chemolithoautotrophic and heterotrophic arsenite oxidizers are of great interest for future in or ex-situ arsenic bioremediation technologies for the detoxification of drinking water by oxidizing arsenite to arsenate that should then precipitates with iron oxides. The microbial activities required for such a technology seem present, amplifiable, diverse and hence robust.
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18
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Lima MA, Urbieta MS, Donati E. Arsenic-tolerant microbial consortia from sediments of Copahue geothermal system with potential applications in bioremediation. J Basic Microbiol 2019; 59:680-691. [PMID: 30997929 DOI: 10.1002/jobm.201800628] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 04/02/2019] [Accepted: 04/11/2019] [Indexed: 11/09/2022]
Abstract
Although arsenic (As) is recognized as a toxic element for living species, some microorganisms have the ability to tolerate and transform it; recent studies have proposed to take advantage of such capacity to develop sustainable bioremediation strategies. In this study, we evaluated the adaptation to increasing concentrations of As(III) and As(V) of three metabolically different microbial cultures (heterotrophic, autotrophic-acidophilic, and anaerobic) obtained from a sample with low-soluble As content from the Copahue geothermal system. At the end of the adaptation process, the heterotrophic culture was able to grow at 20 mM and 450 mM of As(III) and As(V), respectively; the autotrophic-acidophilic culture showed tolerance to 15 mM of As(III) and 150 mM of As(V), whereas the anaerobic culture only developed in As(V) at concentrations up to 50 mM. The most tolerant consortia were characterized by their growth performance, complexity, and the presence of genes related to As metabolism and resistance. Regarding the consortia complexity, the predominant genera identified were: Paenibacillus in both heterotrophic consortia, Acidithiobacillus in the autotrophic-acidophilic consortium tolerant to As(III), Acidiphilium in the autotrophic-acidophilic consortium tolerant to As(V), and Thiomonas and Clostridium in the anaerobic consortium. This study is the first report of As tolerance microorganisms obtained from Copahue and reasserts the versatility and flexibility of the community of this natural extreme environment; also, it opens the door to the study of possible uses of these consortia in the design of biotechnological processes where the As concentration may fluctuate.
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Affiliation(s)
- María Alejandra Lima
- Centro de Investigación y Desarrollo de Fermentaciones Industriales (CINDEFI, CCT La Plata - CONICET, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - María Sofía Urbieta
- Centro de Investigación y Desarrollo de Fermentaciones Industriales (CINDEFI, CCT La Plata - CONICET, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Edgardo Donati
- Centro de Investigación y Desarrollo de Fermentaciones Industriales (CINDEFI, CCT La Plata - CONICET, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
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Bhakat K, Chakraborty A, Islam E. Characterization of arsenic oxidation and uranium bioremediation potential of arsenic resistant bacteria isolated from uranium ore. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:12907-12919. [PMID: 30888619 DOI: 10.1007/s11356-019-04827-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 03/07/2019] [Indexed: 05/10/2023]
Abstract
Arsenic (As) is often found naturally as the co-contaminant in the uranium (U)-contaminated area, obstructing the bioremediation process. Although the U-contaminated environment harbors microorganisms capable of interacting with U which could be exploited in bioremediation. However, they might be unable to perform with their full potential due to As toxicity. Therefore, potential in arsenic resistance and oxidation is greatly desired among the microorganisms for a continued bioremediation process. In this study, arsenic-resistant bacteria were isolated from U ore collected from Bundugurang U mine, characterized and their As oxidation and U removal potentials were determined. 16S rRNA gene sequencing and phylogenetic analysis showed the affiliation of isolated bacteria with Microbacterium, Micrococcus, Shinella, and Bacillus. Except Bacillus sp. EIKU7, Microbacterium sp. EIKU5, Shinella sp. EIKU6, and Micrococcus sp. EIKU8 were found to resist more than 400 mM As(V); however, all the isolates could survive in 8 mM As(III). The isolates were found to readily oxidize As under different culture conditions and are also resistant towards Cd, Cr, Co, Ni, and Zn. All the isolates could remove more than 350 mg U/g dry cells within 48 h which were found to be highly dependent upon the concentration of U, biomass added initially, and on the time of exposure. Ability of the isolates to grow in nitrogen-free medium indicated that they can flourish in the nutrition deprived environment. Therefore, the recovery of isolates with the potent ability to resist and oxidize As from U ore might play an important role in toxic metal bioremediation including U.
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Affiliation(s)
- Kiron Bhakat
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Arindam Chakraborty
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Ekramul Islam
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India.
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20
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Rathod J, Dhanani AS, Jean JS, Jiang WT. The whole genome insight on condition-specific redox activity and arsenopyrite interaction promoting As-mobilization by strain Lysinibacillus sp. B2A1. JOURNAL OF HAZARDOUS MATERIALS 2019; 364:671-681. [PMID: 30399550 DOI: 10.1016/j.jhazmat.2018.10.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/21/2018] [Accepted: 10/14/2018] [Indexed: 06/08/2023]
Abstract
A gram-positive spore former, Lysinibacillus sp. B2A1 was isolated from a high arsenic containing groundwater of Beimen2A well, Chianan Plain area, Southwestern Taiwan. Noteworthy, in the subsurface-mimicking anoxic incubation with a Na-lactate amendment system, this isolate could interact with arsenic-source mineral arsenopyrite and enhance arsenic mobilization. Further, the isolate showed elevated levels of arsenic resistance, 200 mM and 7.5 mM for arsenate and arsenite, respectively. Lysinibacillus sp. B2A1 demonstrated condition-specific redox activities including salient oxic oxidation of arsenite and anoxic reduction of arsenate. The elevated rate of As(III) oxidation (Vmax = 0.13 μM min-1 per 106 cells, Km = 15.3 μM) under oxic conditions was potent. Correlating with stout persistence in an arsenic-rich niche, remarkably, the lesser toxic effects of arsenic ions on bacterial sporulation frequency and germination highlight this strain's ability to thrive under catastrophic conditions. Moreover, the whole genome analysis elucidated diverse metal redox/resistance genes that included a potential arsenite S-adenosylmethyltransferase capable of mitigating arsenite toxicity. Owing to its arsenic resistance, conditional redox activities and ability to interact with arsenic minerals leading to arsenic mobilization, the presence of such spore-forming strains could be a decisive indication towards arsenic mobilization in subsurface aquifers having a high concentration of soluble arsenic or its source minerals.
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Affiliation(s)
- Jagat Rathod
- Department of Earth Sciences, National Cheng Kung University, 1st University Road, Tainan, 70101, Taiwan
| | - Akhilesh S Dhanani
- Department of Pharmacology, Room 5-D, Tupper Medical Building,5850 College Street, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Jiin-Shuh Jean
- Department of Earth Sciences, National Cheng Kung University, 1st University Road, Tainan, 70101, Taiwan.
| | - Wei-Teh Jiang
- Department of Earth Sciences, National Cheng Kung University, 1st University Road, Tainan, 70101, Taiwan
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Lu X, Zhang Y, Liu C, Wu M, Wang H. Characterization of the antimonite- and arsenite-oxidizing bacterium Bosea sp. AS-1 and its potential application in arsenic removal. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:527-534. [PMID: 30086523 DOI: 10.1016/j.jhazmat.2018.07.112] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 07/28/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
Arsenic (As) and antinomy (Sb) usually coexist in natural environments where both of them pollute soils and water. Microorganisms that oxidize arsenite [As(III)] and tolerate Sb have great potential in As and Sb bioremediation, In this study, a Gram-negative bacterial strain, Bosea sp. AS-1, was isolated from a mine slag sample collected in Xikuangshan Sb mine in China. AS-1 could tolerate 120 mM of As(III) and 50 mM of antimonite [Sb(III)]. It could also oxidize 2 mM of As(III) or Sb(III) completely under heterotrophic and aerobic conditions. Interestingly, strain AS-1 preferred to oxidize As(III) with yeast extract as the carbon source, whereas Sb(III) oxidation was favored with lactate in the medium. Genomic analysis of AS-1 confirmed the presence of several gene islands for As resistance and oxidation. Notably, a system of AS-1 and goethite was found to be able to remove 99% of the As with the initial concentration of 500 μg/L As(III) and 500 μg/L Sb(III), which suggests the potential of this approach for As removal in environments especially with the presence of high Sb.
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Affiliation(s)
- Xiaolu Lu
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, PR China
| | - Yining Zhang
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, PR China
| | - Chaoyang Liu
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, PR China
| | - Mengxiaojun Wu
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, PR China
| | - Hongmei Wang
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of China (Wuhan), Wuhan 430074, PR China.
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Thouin H, Battaglia-Brunet F, Norini MP, Le Forestier L, Charron M, Dupraz S, Gautret P. Influence of environmental changes on the biogeochemistry of arsenic in a soil polluted by the destruction of chemical weapons: A mesocosm study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:216-226. [PMID: 29426144 DOI: 10.1016/j.scitotenv.2018.01.158] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/16/2018] [Accepted: 01/16/2018] [Indexed: 06/08/2023]
Abstract
Thermal destruction of chemical munitions from World War I led to the formation of a heavily contaminated residue that contains an unexpected mineral association in which a microbial As transformation has been observed. A mesocosm study was conducted to assess the impact of water saturation episodes and input of bioavailable organic matter (OM) on pollutant behavior in relation to biogeochemical parameters. Over a period of about eight (8) months, the contaminated soil was subjected to cycles of dry and wet periods corresponding to water table level variations. After the first four (4) months, fragmented litter from the nearby forest was placed on top of the soil. The mesocosm solid phase was sampled by three rounds of coring: at the beginning of the experiment, after four (4) months (before the addition of OM), and at the end of the experiment. Scanning electron microscopy coupled to energy dispersive X-ray spectroscopy observations showed that an amorphous phase, which was the primary carrier of As, Zn, and Cu, was unstable under water-saturated conditions and released a portion of the contaminants in solution. Precipitation of a lead arsenate chloride mineral, mimetite, in soils within the water saturated level caused the immobilization of As and Pb. Mimetite is a durable trap because of its large stability domain; however, this precipitation was limited by a low Pb concentration inducing that high amounts of As remained in solution. The addition of forest litter modified the quantities and qualities of soil OM. Microbial As transformation was affected by the addition of OM, which increased the concentration of both As(III)-oxidizing and As(V)-reducing microorganisms. The addition of OM negatively impacted the As(III) oxidizing rate, however As(III) oxidation was still the dominant reaction in accordance with the formation of arsenate-bearing minerals.
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Affiliation(s)
- Hugues Thouin
- BRGM, 3 avenue Claude Guillemin, 45060 Orléans, France; Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France.
| | - Fabienne Battaglia-Brunet
- BRGM, 3 avenue Claude Guillemin, 45060 Orléans, France; Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
| | - Marie-Paule Norini
- Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
| | - Lydie Le Forestier
- Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
| | | | | | - Pascale Gautret
- Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
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Tapase SR, Kodam KM. Assessment of arsenic oxidation potential of Microvirga indica S-MI1b sp. nov. in heavy metal polluted environment. CHEMOSPHERE 2018; 195:1-10. [PMID: 29241075 DOI: 10.1016/j.chemosphere.2017.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 12/01/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
Arsenic oxidizing α-proteobacterial strain Microvirga indica S-MI1b sp. nov. was isolated from metal industry soil and has the ability to oxidize 15 mM of arsenite [As(III)] completely in 39 h. The strain S-MI1b resists to different heavy metals and it oxidizes arsenite in presence of Li, Pb, Hg, Sb(III), Cd, Cr(VI), Ni, and exhibited growth inhibitory effect in presence of Hg, Cu, and Cd at higher concentration. The morphology of Microvirga indica S-MI1b changed in presence of heavy metals however there was no accumulation of As(III) in the cells. The study showed that Microvirga indica S-MI1b can oxidize arsenite at broad pH ranges from 4.0 to 9.0 with optimum at pH 7.0. The kinetic studies of arsenite oxidation by strain S-MI1b signified that it has greater affinity towards As(III). The arsenite oxidase activity of cells grown in presence of Li and Cr(VI) supported the cell culture studies. This is first report on biotransformation of arsenite by Microvirga genus and also arsenite oxidation in presence of heavy metals.
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Affiliation(s)
- Savita R Tapase
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | - Kisan M Kodam
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India.
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Tapase SR, Mawlankar RB, Sundharam SS, Krishnamurthi S, Dastager SG, Kodam KM. Microvirga indica sp. nov., an arsenite-oxidizing Alphaproteobacterium, isolated from metal industry waste soil. Int J Syst Evol Microbiol 2017; 67:3525-3531. [PMID: 28867001 DOI: 10.1099/ijsem.0.002157] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel Gram-stain-negative bacterium, strain S-MI1bT, belonging to the genus Microvirga was isolated from a metal industry waste soil sample in Pirangut village, Pune District, Maharashtra, India. Cells were non-spore-forming, small rod-shapes, motile and strictly aerobic with light-pink colonies. The strain grew in 0-7.0 % (w/v) NaCl and at 25-45 °C, with optimal growth at 40 °C. The predominant fatty acids detected were summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c) and C19 : 0 cyclo ω8c. The predominant isoprenoid quinone was Q-10. The G+C content was 67.2 mol% and DNA-DNA relatedness values between strain S-MI1bTand Microvirga subterranea DSM 14364T and Microvirgaaerophila 5420S-12T were 53.9 and 54.8 %, respectively. Phylogenetic analysis, based on 16S rRNA gene sequences, indicated that strain S-MI1bT is a member of the genus Microvirga, with greatest sequence similarities of 97.7 and 97.4 % with M. subterranea DSM 14364T and M.aerophila 5420S-12T, respectively. Phylogenetic analysis showed that strain S-MI1bT forms a clade with the type strain of M. subterranea DSM 14364T, and was readily distinguishable from it due to various phenotypic characteristics. The combination of genotypic and phenotypic data suggests that the isolate represents a novel species of the genus Microvirga, for which the name Microvirga indica sp. nov. is proposed. The type strain is S-MI1bT (=NCIM-5595T=KACC 18792T=BCRC 80972T).
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Affiliation(s)
- Savita R Tapase
- Division of Biochemistry, Department of Chemistry, Savitribai Phule Pune University, Pune-411007, Maharashtra, India
| | - Rahul B Mawlankar
- NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune-411008, Maharashtra, India
| | - Shiva S Sundharam
- Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160036, India
| | - Srinivasan Krishnamurthi
- Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160036, India
| | - Syed G Dastager
- NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune-411008, Maharashtra, India
| | - Kisan M Kodam
- Division of Biochemistry, Department of Chemistry, Savitribai Phule Pune University, Pune-411007, Maharashtra, India
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Yang Z, Wu Z, Liao Y, Liao Q, Yang W, Chai L. Combination of microbial oxidation and biogenic schwertmannite immobilization: A potential remediation for highly arsenic-contaminated soil. CHEMOSPHERE 2017; 181:1-8. [PMID: 28414954 DOI: 10.1016/j.chemosphere.2017.04.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/27/2017] [Accepted: 04/10/2017] [Indexed: 05/27/2023]
Abstract
Here, a novel strategy that combines microbial oxidation by As(III)-oxidizing bacterium and biogenic schwertmannite (Bio-SCH) immobilization was first proposed and applied for treating the highly arsenic-contaminated soil. Brevibacterium sp. YZ-1 isolated from a highly As-contaminated soil was used to oxidize As(III) in contaminated soils. Under optimum culture condition for microbial oxidation, 92.3% of water-soluble As(III) and 84.4% of NaHCO3-extractable As(III) in soils were removed. Bio-SCH synthesized through the oxidation of ferrous sulfate by Acidithiobacillus ferrooxidans immobilize As(V) in the contaminated soil effectively. Consequently, the combination of microbial oxidation and Bio-SCH immobilization performed better in treating the highly As-contaminated soil with immobilization efficiencies of 99.3% and 82.6% for water-soluble and NaHCO3-extractable total As, respectively. Thus, the combination can be considered as a green remediation strategy for developing a novel and valuable solution for As-contaminated soils.
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Affiliation(s)
- Zhihui Yang
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
| | - Zijian Wu
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, PR China
| | - Yingping Liao
- Administration of Quality and Technology Supervision of Hunan Province, Changsha, Hunan, 410083, PR China
| | - Qi Liao
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
| | - Weichun Yang
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, PR China.
| | - Liyuan Chai
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
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Bruneel O, Mghazli N, Hakkou R, Dahmani I, Filali Maltouf A, Sbabou L. In-depth characterization of bacterial and archaeal communities present in the abandoned Kettara pyrrhotite mine tailings (Morocco). Extremophiles 2017; 21:671-685. [PMID: 28447266 DOI: 10.1007/s00792-017-0933-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 04/17/2017] [Indexed: 01/28/2023]
Abstract
In Morocco, pollution caused by closed mines continues to be a serious threat to the environment, like the generation of acid mine drainage. Mine drainage is produced by environmental and microbial oxidation of sulfur minerals originating from mine wastes. The fundamental role of microbial communities is well known, like implication of Fe-oxidizing and to a lesser extent S-oxidizing microorganism in bioleaching. However, the structure of the microbial communities varies a lot from one site to another, like diversity depends on many factors such as mineralogy, concentration of metals and metalloids or pH, etc. In this study, prokaryotic communities in the pyrrhotite-rich tailings of Kettara mine were characterized using the Illumina sequencing. In-depth phylogenetic analysis revealed a total of 12 phyla of bacteria and 1 phyla of Archaea. The majority of sequences belonged to the phylum of Proteobacteria and Firmicutes with a predominance of Bacillus, Pseudomonas or Corynebacterium genera. Many microbial populations are implicated in the iron, sulfur and arsenic cycles, like Acidiferrobacter, Leptospirillum, or Alicyclobacillus in Fe; Acidiferrobacter and Sulfobacillus in S; and Bacillus or Pseudomonas in As. This is one of the first description of prokaryotic communities in pyrrhotite-rich mine tailings using high-throughput sequencing.
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Affiliation(s)
- Odile Bruneel
- Laboratoire de Microbiologie et Biologie Moléculaire, LMBM, Faculté des Sciences, Université Mohammed V, Av Ibn Batouta, BP1014, Rabat, Morocco.
- Laboratoire HydroSciences Montpellier, UMR5569 (CNRS/IRD/UM), Université de Montpellier, CC0057 (MSE), 16, rue Auguste Broussonet, 34090, Montpellier, France.
| | - N Mghazli
- Laboratoire de Microbiologie et Biologie Moléculaire, LMBM, Faculté des Sciences, Université Mohammed V, Av Ibn Batouta, BP1014, Rabat, Morocco
| | - R Hakkou
- Laboratoire de Chimie des Matériaux et de l'Environnement (LCME), Faculté des Sciences et Technique Guéliz, Université de Cadi Ayyad, Avenue Abdelkarim Elkhattabi, Gueliz, P.O. Box 549, Marrakech, Morocco
| | - I Dahmani
- Laboratoire de Microbiologie et Biologie Moléculaire, LMBM, Faculté des Sciences, Université Mohammed V, Av Ibn Batouta, BP1014, Rabat, Morocco
| | - A Filali Maltouf
- Laboratoire de Microbiologie et Biologie Moléculaire, LMBM, Faculté des Sciences, Université Mohammed V, Av Ibn Batouta, BP1014, Rabat, Morocco
| | - L Sbabou
- Laboratoire de Microbiologie et Biologie Moléculaire, LMBM, Faculté des Sciences, Université Mohammed V, Av Ibn Batouta, BP1014, Rabat, Morocco
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Enhanced Detoxification of Arsenic Under Carbon Starvation: A New Insight into Microbial Arsenic Physiology. Curr Microbiol 2017; 74:614-622. [DOI: 10.1007/s00284-017-1203-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 01/20/2017] [Indexed: 11/26/2022]
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Hamidou Soumana I, Linz B, Harvill ET. Environmental Origin of the Genus Bordetella. Front Microbiol 2017; 8:28. [PMID: 28174558 PMCID: PMC5258731 DOI: 10.3389/fmicb.2017.00028] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Accepted: 01/05/2017] [Indexed: 01/01/2023] Open
Abstract
Members of the genus Bordetella include human and animal pathogens that cause a variety of respiratory infections, including whooping cough in humans. Despite the long known ability to switch between a within-animal and an extra-host lifestyle under laboratory growth conditions, no extra-host niches of pathogenic Bordetella species have been defined. To better understand the distribution of Bordetella species in the environment, we probed the NCBI nucleotide database with the 16S ribosomal RNA (16S rRNA) gene sequences from pathogenic Bordetella species. Bacteria of the genus Bordetella were frequently found in soil, water, sediment, and plants. Phylogenetic analyses of their 16S rRNA gene sequences showed that Bordetella recovered from environmental samples are evolutionarily ancestral to animal-associated species. Sequences from environmental samples had a significantly higher genetic diversity, were located closer to the root of the phylogenetic tree and were present in all 10 identified sequence clades, while only four sequence clades possessed animal-associated species. The pathogenic bordetellae appear to have evolved from ancestors in soil and/or water. We show that, despite being animal-adapted pathogens, Bordetella bronchiseptica, and Bordetella hinzii have preserved the ability to grow and proliferate in soil. Our data implicate soil as a probable environmental origin of Bordetella species, including the animal-pathogenic lineages. Soil may further constitute an environmental niche, allowing for persistence and dissemination of the bacterial pathogens. Spread of pathogenic bordetellae from an environmental reservoir such as soil may potentially explain their wide distribution as well as frequent disease outbreaks that start without an obvious infectious source.
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Affiliation(s)
- Illiassou Hamidou Soumana
- Department of Infectious Diseases, University of GeorgiaAthens, GA, USA; Center for Vaccines and Immunology, University of GeorgiaAthens, GA, USA
| | - Bodo Linz
- Center for Vaccines and Immunology, University of GeorgiaAthens, GA, USA; Department of Veterinary and Biomedical Sciences, Pennsylvania State UniversityUniversity Park, PA, USA
| | - Eric T Harvill
- Department of Infectious Diseases, University of GeorgiaAthens, GA, USA; Center for Vaccines and Immunology, University of GeorgiaAthens, GA, USA; Department of Veterinary and Biomedical Sciences, Pennsylvania State UniversityUniversity Park, PA, USA
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Bagade AV, Bachate SP, Dholakia BB, Giri AP, Kodam KM. Characterization of Roseomonas and Nocardioides spp. for arsenic transformation. JOURNAL OF HAZARDOUS MATERIALS 2016; 318:742-750. [PMID: 27498193 DOI: 10.1016/j.jhazmat.2016.07.062] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 06/18/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
The metalloid arsenic predominantly exists in the arsenite [As(III)] and arsenate [As(V)]. These two forms are respectively oxidized and reduced by microbial redox processes. This study was designed to bioprospect arsenic tolerating bacteria from Lonar lake and to characterize their arsenic redoxing ability. Screening of sixty-nine bacterial species isolated from Lonar lake led to identification of three arsenic-oxidizing and seven arsenic-reducing species. Arsenite oxidizing isolate Roseomonas sp. L-159a being closely related to Roseomonas cervicalis ATCC 49957 oxidized 2mM As(III) in 60h. Gene expression of large and small subunits of arsenite oxidase respectively showed 15- and 17-fold higher expression. Another isolate Nocardioides sp. L-37a formed a clade with Nocardioides ghangwensis JC2055, exhibited normal growth with different carbon sources and pH ranges. It reduced 2mM As(V) in 36h and showed constitutive expression of arsenate reductase which increased over 4-fold upon As(V) exposure. Genetic markers related to arsenic transformation were identified and characterized from the two isolates. Moderate resistance against the arsenicals was exhibited by the two isolates in the range of 1-5mM for As(III) and 1-200mM for As(V). Altogether we provide multiple evidences to indicate that Roseomonas sp. and Nocardioides sp. exhibited arsenic transformation ability.
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Affiliation(s)
- Aditi V Bagade
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, Maharashtra, India
| | - Sachin P Bachate
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, Maharashtra, India
| | - Bhushan B Dholakia
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
| | - Ashok P Giri
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
| | - Kisan M Kodam
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, Maharashtra, India.
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Lescure T, Moreau J, Charles C, Ben Ali Saanda T, Thouin H, Pillas N, Bauda P, Lamy I, Battaglia-Brunet F. Influence of organic matters on AsIII oxidation by the microflora of polluted soils. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2016; 38:911-925. [PMID: 26427654 DOI: 10.1007/s10653-015-9771-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/23/2015] [Indexed: 06/05/2023]
Abstract
The global AsIII-oxidizing activity of microorganisms in eight surface soils from polluted sites was quantified with and without addition of organic substrates. The organic substances provided differed by their nature: either yeast extract, commonly used in microbiological culture media, or a synthetic mixture of defined organic matters (SMOM) presenting some common features with natural soil organic matter. Correlations were sought between soil characteristics and both the AsIII-oxidizing rate constants and their evolution in accordance with inputs of organic substrates. In the absence of added substrate, the global AsIII oxidation rate constant correlated positively with the concentration of intrinsic organic matter in the soil, suggesting that AsIII-oxidizing activity was limited by organic substrate availability in nutrient-poor soils. This limitation was, however, removed by 0.08 g/L of added organic carbon. In most conditions, the AsIII oxidation rate constant decreased as organic carbon input increased from 0.08 to 0.4 g/L. Incubations of polluted soils in aerobic conditions, amended or not with SMOM, resulted in short-term As mobilization in the presence of SMOM and active microorganisms. In contrast, microbial AsIII oxidation seemed to stabilize As when no organic substrate was added. Results suggest that microbial speciation of arsenic driven by nature and concentration of organic matter exerts a major influence on the fate of this toxic element in surface soils.
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Affiliation(s)
- T Lescure
- BRGM, 3 Avenue Claude Guillemin, 45060, Orléans, France
- ISTO, UMR 7327, BRGM, BP 36009, 45060, Orléans, France
- LIEC UMR 7360, CNRS-Université de Lorraine, Campus Bridoux, rue du Général Delestraint, 57070, Metz, France
- Agence de l'Environnement et de la Maîtrise de l'Energie, 20 Avenue du Grésillé, BP 90406, 49004, Angers Cedex 01, France
| | - J Moreau
- BRGM, 3 Avenue Claude Guillemin, 45060, Orléans, France
| | - C Charles
- BRGM, 3 Avenue Claude Guillemin, 45060, Orléans, France
| | | | - H Thouin
- BRGM, 3 Avenue Claude Guillemin, 45060, Orléans, France
- ISTO, UMR 7327, BRGM, BP 36009, 45060, Orléans, France
| | - N Pillas
- BRGM, 3 Avenue Claude Guillemin, 45060, Orléans, France
| | - P Bauda
- LIEC UMR 7360, CNRS-Université de Lorraine, Campus Bridoux, rue du Général Delestraint, 57070, Metz, France
| | - I Lamy
- INRA Centre de Versailles-Grignon, RD 10, 78026, Versailles Cedex, France
| | - F Battaglia-Brunet
- BRGM, 3 Avenue Claude Guillemin, 45060, Orléans, France.
- ISTO, UMR 7327, BRGM, BP 36009, 45060, Orléans, France.
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Dong DT, Yamamura S, Amachi S. Impact of Arsenite on the Bacterial Community Structure and Diversity in Soil. Microbes Environ 2016; 31:41-8. [PMID: 26903368 PMCID: PMC4791115 DOI: 10.1264/jsme2.me15093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The impact of arsenite (As[III]) on the bacterial community structure and diversity in soil was determined by incubating soil slurries with 50, 500, and 5,000 μM As(III). As(III) was oxidized to arsenate (As[V]), and the microbial contribution to As(III) oxidation was 70–100%. PCR-denaturing gradient gel electrophoresis revealed that soil bacterial diversity decreased in the presence of As(III). Bacteria closely related to the family Bacillaceae were predominant in slurry spiked with 5,000 μM As(III). The population size of culturable As(III)-resistant bacteria was 37-fold higher in this slurry than in unspiked slurry (p < 0.01), indicating that high levels of As(III) stimulate the emergence of As(III)-resistant bacteria. As(III)-resistant bacteria isolated from slurry spiked with 5,000 μM As(III) were mainly affiliated with the genus Bacillus; however, no strains showed As(III)-oxidizing capacity. An As(III)-oxidizing bacterial community analysis based on As(III) oxidase gene (aioA) sequences demonstrated that diversity was the lowest in slurry spiked with 5,000 μM As(III). The deduced AioA sequences affiliated with Alphaproteobacteria accounted for 91–93% of all sequences in this slurry, among which those closely related to Bosea spp. were predominant (48–86%). These results suggest that exposure to high levels of As(III) has a significant impact on the composition and diversity of the soil bacterial community, including the As(III)-oxidizing bacterial community. Certain As(III)-oxidizing bacteria with strong As(III) resistance may be enriched under high As(III) levels, while more sensitive As(III) oxidizers are eliminated under these conditions.
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Das S, Jean JS, Chou ML, Rathod J, Liu CC. Arsenite-oxidizing bacteria exhibiting plant growth promoting traits isolated from the rhizosphere of Oryza sativa L.: Implications for mitigation of arsenic contamination in paddies. JOURNAL OF HAZARDOUS MATERIALS 2016; 302:10-18. [PMID: 26448489 DOI: 10.1016/j.jhazmat.2015.09.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 09/09/2015] [Accepted: 09/21/2015] [Indexed: 05/14/2023]
Abstract
Arsenite-oxidizing bacteria exhibiting plant growth promoting (PGP) traits can have the advantages of reducing As-uptake by rice and promoting plant growth in As-stressed soil. A gram-positive bacterium Bacillus flexus ASO-6 resistant to high levels of As (32 and 280 mM for arsenite and arsenate, respectively) and exhibiting elevated rates of As(III) oxidation (Vmax=1.34 μM min(-1) 10(-7) cell) was isolated from rhizosphere of rice. The presence of aoxB gene and exhibition of As(III)-oxidase enzyme activity of this strain was observed. The ability of the strain to produce siderophore, IAA, ACC-deaminase and to solubilize phosphate was verified. The rice seed treated with the strain exhibited significantly improved seed germination and seedling vigor compared with the un-inoculated seeds. The bacterial inoculation significantly increased root biomass, straw yield, grain yield, chlorophyll and carotenoid in the rice plant. Moreover, As uptake from root to shoot and As accumulation in straw and grain decreased significantly as a result of the bacterial inoculation. Noteworthy, the inoculation effect is more prominent in non-flooded soil than it is in flooded soil. Owing to its wide action spectrum, this As(III)-oxidizing PGPB could serve as a potential bio-inoculant for mitigation of As in paddies and sustainable rice production in As-contaminated areas.
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Affiliation(s)
- Suvendu Das
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jiin-Shuh Jean
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan.
| | - Mon-Lin Chou
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jagat Rathod
- Department of Microbiology and Biotechnology Centre, The Maharaja Sayajirao University of Baroda, Vadodara, 390002 Gujarat, India
| | - Chia-Chuan Liu
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
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Corsini A, Colombo M, Muyzer G, Cavalca L. Characterization of the arsenite oxidizer Aliihoeflea sp. strain 2WW and its potential application in the removal of arsenic from groundwater in combination with Pf-ferritin. Antonie van Leeuwenhoek 2015; 108:673-84. [PMID: 26149126 DOI: 10.1007/s10482-015-0523-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 06/29/2015] [Indexed: 10/23/2022]
Abstract
A heterotrophic arsenite-oxidizing bacterium, strain 2WW, was isolated from a biofilter treating arsenic-rich groundwater. Comparative analysis of 16S rRNA gene sequences showed that it was closely related (98.7 %) to the alphaproteobacterium Aliihoeflea aesturari strain N8(T). However, it was physiologically different by its ability to grow at relatively low substrate concentrations, low temperatures and by its ability to oxidize arsenite. Here we describe the physiological features of strain 2WW and compare these to its most closely related relative, A. aestuari strain N8(T). In addition, we tested its efficiency to remove arsenic from groundwater in combination with Pf-ferritin. Strain 2WW oxidized arsenite to arsenate between pH 5.0 and 8.0, and from 4 to 30 °C. When the strain was used in combination with a Pf-ferritin-based material for arsenic removal from natural groundwater, the removal efficiency was significantly higher (73 %) than for Pf-ferritin alone (64 %). These results showed that arsenite oxidation by strain 2WW combined with Pf-ferritin-based material has a potential in arsenic removal from contaminated groundwater.
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Affiliation(s)
- Anna Corsini
- DeFENS - Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, via Celoria 2, 20133, Milan, Italy
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Dong D, Ohtsuka T, Dong DT, Amachi S. Arsenite oxidation by a facultative chemolithoautotrophic Sinorhizobium sp. KGO-5 isolated from arsenic-contaminated soil. Biosci Biotechnol Biochem 2014; 78:1963-70. [DOI: 10.1080/09168451.2014.940276] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Abstract
A chemolithoautotrophic arsenite-oxidizing bacterium, designated strain KGO-5, was isolated from arsenic-contaminated industrial soil. Strain KGO-5 was phylogenetically closely related with Sinorhizobium meliloti with 16S rRNA gene similarity of more than 99%, and oxidized 5 mM arsenite under autotrophic condition within 60 h with a doubling time of 3.0 h. Additions of 0.01–0.1% yeast extract enhanced the growth significantly, and the strain still oxidized arsenite efficiently with much lower doubling times of approximately 1.0 h. Arsenite-oxidizing capacities (11.2–54.1 μmol h−1 mg dry cells−1) as well as arsenite oxidase (Aio) activities (1.76–10.0 mU mg protein−1) were found in the cells grown with arsenite, but neither could be detected in the cells grown without arsenite. Strain KGO-5 possessed putative aioA gene, which is closely related with AioA of Ensifer adhaerens. These results suggest that strain KGO-5 is a facultative chemolithoautotrophic arsenite oxidizer, and its Aio is induced by arsenic.
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Affiliation(s)
- Dan Dong
- Graduate School of Horticulture, Chiba University, Matsudo, Japan
| | | | - Dian Tao Dong
- Graduate School of Horticulture, Chiba University, Matsudo, Japan
| | - Seigo Amachi
- Graduate School of Horticulture, Chiba University, Matsudo, Japan
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Sarkar A, Kazy SK, Sar P. Studies on arsenic transforming groundwater bacteria and their role in arsenic release from subsurface sediment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:8645-8662. [PMID: 24764001 DOI: 10.1007/s11356-014-2759-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
Ten different Gram-negative arsenic (As)-resistant and As-transforming bacteria isolated from As-rich groundwater of West Bengal were characterized to assess their role in As mobilization. 16S rRNA gene analysis confirmed the affiliation of these bacteria to genera Achromobacter, Brevundimonas, Rhizobium, Ochrobactrum, and Pseudoxanthomonas. Along with superior As-resistance and As-transformation abilities, the isolates showed broad metabolic capacity in terms of utilizing a variety of electron donors and acceptors (including As) under aerobic and anaerobic conditions, respectively. Arsenic transformation studies performed under various conditions indicated highly efficient As(3+) oxidation or As(5+) reduction kinetics. Genes encoding As(3+) oxidase (aioA), cytosolic As(5+) reductase (arsC), and As(3+) efflux pump (arsB and acr3) were detected within the test isolates. Sequence analyses suggested that As homeostasis genes (particularly arsC, arsB, and acr3) were acquired by most of the bacteria through horizontal gene transfer. A strong correlation between As resistance phenotype and the presence of As(3+) transporter genes was observed. Microcosm study showed that bacterial strain having cytosolic As(5+) reductase property could play important role in mobilizing As (as As(3+)) from subsurface sediment.
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Affiliation(s)
- Angana Sarkar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
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Bolan N, Kunhikrishnan A, Thangarajan R, Kumpiene J, Park J, Makino T, Kirkham MB, Scheckel K. Remediation of heavy metal(loid)s contaminated soils--to mobilize or to immobilize? JOURNAL OF HAZARDOUS MATERIALS 2014; 266:141-66. [PMID: 24394669 DOI: 10.1016/j.jhazmat.2013.12.018] [Citation(s) in RCA: 887] [Impact Index Per Article: 88.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 12/06/2013] [Accepted: 12/12/2013] [Indexed: 05/17/2023]
Abstract
Unlike organic contaminants, metal(loid)s do not undergo microbial or chemical degradation and persist for a long time after their introduction. Bioavailability of metal(loid)s plays a vital role in the remediation of contaminated soils. In this review, the remediation of heavy metal(loid) contaminated soils through manipulating their bioavailability using a range of soil amendments will be presented. Mobilizing amendments such as chelating and desorbing agents increase the bioavailability and mobility of metal(loid)s. Immobilizing amendments such of precipitating agents and sorbent materials decrease the bioavailabilty and mobility of metal(loid)s. Mobilizing agents can be used to enhance the removal of heavy metal(loid)s though plant uptake and soil washing. Immobilizing agents can be used to reduce the transfer to metal(loid)s to food chain via plant uptake and leaching to groundwater. One of the major limitations of mobilizing technique is susceptibility to leaching of the mobilized heavy metal(loid)s in the absence of active plant uptake. Similarly, in the case of the immobilization technique the long-term stability of the immobilized heavy metal(loid)s needs to be monitored.
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Affiliation(s)
- Nanthi Bolan
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide, Australia.
| | - Anitha Kunhikrishnan
- Chemical Safety Division, Department of Agro-Food Safety, National Academy of Agricultural Science, Suwon-si, Gyeonggi-do, Republic of Korea
| | - Ramya Thangarajan
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide, Australia
| | - Jurate Kumpiene
- Waste Science and Technology, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå SE-97187, Sweden
| | - Jinhee Park
- Centre for Mined Land Rehabilitation, University of Queensland, St Lucia, Australia
| | - Tomoyuki Makino
- Soil Environmental Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki, Japan
| | - Mary Beth Kirkham
- Department of Agronomy, 2004 Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, USA
| | - Kirk Scheckel
- National Risk Management Research Laboratory, U.S. Environmental Protection Agency, 5995 Center Hill Avenue, Cincinnati, OH 45224, USA
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Microbiology of inorganic arsenic: From metabolism to bioremediation. J Biosci Bioeng 2014; 118:1-9. [PMID: 24507904 DOI: 10.1016/j.jbiosc.2013.12.011] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 12/11/2013] [Accepted: 12/11/2013] [Indexed: 01/30/2023]
Abstract
Arsenic (As) contamination of drinking water and soils poses a threat to a large number of people worldwide, especially in Southeast Asia. The predominant forms of As in soils and aquifers are inorganic arsenate [As(V)] and arsenite [As(III)], with the latter being more mobile and toxic. Thus, redox transformations of As are of great importance to predict its fate in the environment, as well as to achieve remediation of As-contaminated water and soils. Although As has been recognized as a toxic element, a wide variety of microorganisms, mainly bacteria, can use it as an electron donor for autotrophic growth or as an electron acceptor for anaerobic respiration. In addition, As detoxification systems in which As is oxidized to the less toxic form or reduced for subsequent excretion are distributed widely in microorganisms. This review describes current development of physiology, biochemistry, and genomics of arsenic-transforming bacteria. Potential application of such bacteria to removal of As from soils and water is also highlighted.
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Kim J, Kwon D, Kim K, Hoffmann MR. Electrochemical production of hydrogen coupled with the oxidation of arsenite. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:2059-2066. [PMID: 24386985 DOI: 10.1021/es4046814] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The production of hydrogen accompanied by the simultaneous oxidation of arsenite (As(III)) was achieved using an electrochemical system that employed a BiOx-TiO2 semiconductor anode and a stainless steel (SS) cathode in the presence of sodium chloride (NaCl) electrolyte. The production of H2 was enhanced by the addition of As(III) during the course of water electrolysis. The synergistic effect of As(III) on H2 production can be explained in terms of (1) the scavenging of reactive chlorine species (RCS), which inhibit the production of H2 by competing with water molecules (or protons) for the electrons on the cathode, by As(III) and (2) the generation of protons, which are more favorably reduced on the cathode than water molecules, through the oxidation of As(III). The addition of 1.0 mM As(III) to the electrolyte at a constant cell voltage (E cell) of 3.0 V enhanced the production of H2 by 12% even though the cell current (I cell) was reduced by 5%. The net effect results in an increase in the energy efficiency (EE) for H2 production (ΔEE) by 17.5%. Furthermore, the value ΔEE, which depended on As(III) concentration, also depended on the applied E cell. For example, the ΔEE increased with increasing As(III) concentration in the micromolar range but decreased as a function of E cell. This is attributed to the fact that the reactions between RCS and As(III) are influenced by both RCS concentration depending on E cell and As(III) concentration in the solution. On the other hand, the ΔEE decreased with increasing As(III) concentration in the millimolar range due to the adsorption of As(V) generated from the oxidation of As(III) on the semiconductor anode. In comparison to the electrochemical oxidation of certain organic compounds (e.g., phenol, 4-chlorophenol, 2-chlorophenol, salicylic acid, catechol, maleic acid, oxalate, and urea), the ΔEE obtained during As(III) oxidation (17.5%) was higher than that observed during the oxidation of the above organic compounds (ΔEE = 3.0-15.3%) with the exception of phenol at 22.1%. The synergistic effect of As(III) on H2 production shows that an energetic byproduct can be produced during the remediation of a significant inorganic pollutant.
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Affiliation(s)
- Jungwon Kim
- Linde-Robinson Laboratory, California Institute of Technology , Pasadena, California 91125, United States
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Cébron A, Arsène-Ploetze F, Bauda P, Bertin PN, Billard P, Carapito C, Devin S, Goulhen-Chollet F, Poirel J, Leyval C. Rapid impact of phenanthrene and arsenic on bacterial community structure and activities in sand batches. MICROBIAL ECOLOGY 2014; 67:129-44. [PMID: 24189653 DOI: 10.1007/s00248-013-0313-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 10/10/2013] [Indexed: 05/08/2023]
Abstract
The impact of both organic and inorganic pollution on the structure of soil microbial communities is poorly documented. A short-time batch experiment (6 days) was conducted to study the impact of both types of pollutants on the taxonomic, metabolic and functional diversity of soil bacteria. For this purpose sand spiked with phenanthrene (500 mg kg(-1) sand) or arsenic (arsenite 0.66 mM and arsenate 12.5 mM) was supplemented with artificial root exudates and was inoculated with bacteria originated from an aged PAH and heavy-metal-polluted soil. The bacterial community was characterised using bacterial strain isolation, TTGE fingerprinting and proteomics. Without pollutant, or with phenanthrene or arsenic, there were no significant differences in the abundance of bacteria and the communities were dominated by Pseudomonas and Paenibacillus genera. However, at the concentrations used, both phenanthrene or arsenic were toxic as shown by the decrease in mineralisation activities. Using community-level physiological profiles (Biolog Ecoplates™) or differential proteomics, we observed that the pollutants had an impact on the community physiology, in particular phenanthrene induced a general cellular stress response with changes in the central metabolism and membrane protein synthesis. Real-time PCR quantification of functional genes and transcripts revealed that arsenic induced the transcription of functional arsenic resistance and speciation genes (arsB, ACR3 and aioA), while no transcription of PAH-degradation genes (PAH-dioxygenase and catechol-dioxygenase) was detected with phenanthrene. Altogether, in our tested conditions, pollutants do not have a major effect on community abundance or taxonomic composition but rather have an impact on metabolic and functional bacterial properties.
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Affiliation(s)
- A Cébron
- LIEC UMR7360, CNRS-Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, 54506, Vandoeuvre-lès-Nancy Cedex, France,
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Bahar MM, Megharaj M, Naidu R. Kinetics of arsenite oxidation by Variovorax sp. MM-1 isolated from a soil and identification of arsenite oxidase gene. JOURNAL OF HAZARDOUS MATERIALS 2013; 262:997-1003. [PMID: 23290483 DOI: 10.1016/j.jhazmat.2012.11.064] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 11/29/2012] [Accepted: 11/30/2012] [Indexed: 06/01/2023]
Abstract
A Gram-negative, arsenite-oxidizing bacterial strain, MM-1 tolerant to 20mM arsenite and 200 mM arsenate was isolated from a heavy metal contaminated soil which contained only 8.8 mg kg(-1) of arsenic. Based on 16S rRNA analysis, the strain was closely related to the genus Variovorax. This strain completely oxidized 500 μM of arsenite to arsenate within 3h of incubation in minimal salts medium. Kinetic studies of arsenite oxidation by the cells showed one of the lowest Km (17 μM) and highest Vmax (1.23 × 10(-7) μM min(-1) cell(-1)) values reported to date for whole cell suspension. PCR analysis using degenerate primers confirmed the presence of arsenite oxidase gene and its amino acid sequence was 70-91% identical to the large subunit of most reported arsenite oxidases. The significant arsenite oxidation capacity shown by the strain opens the way to its potential application in arsenic remediation process.
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Affiliation(s)
- Md Mezbaul Bahar
- Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Mawson Lakes Boulevard, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), Mawson Lakes Bvd., Mawson lakes, SA 5095, Australia
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Majumder A, Bhattacharyya K, Bhattacharyya S, Kole SC. Arsenic-tolerant, arsenite-oxidising bacterial strains in the contaminated soils of West Bengal, India. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 463-464:1006-1014. [PMID: 23876545 DOI: 10.1016/j.scitotenv.2013.06.068] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 06/12/2013] [Accepted: 06/16/2013] [Indexed: 06/02/2023]
Abstract
As biological agents represent an affordable alternative to costly metal decontamination technologies, we isolated arsenic (As) oxidising bacteria from the As-contaminated soils of West Bengal, India. These strains were closely related to various species of Bacillus and Geobacillus based on their 16S rRNA gene sequences. They were found to be hyper-resistant to both As(V) (167-400 mM) and As(III) (16-47 mM). Elevated rates of As(III) oxidation (278-1250 μM h(-1)) and arsenite oxidase activity (2.1-12.5 nM min(-1) mg(-1) protein) were observed in these isolates. Screening identified four strains as superior As-oxidisers. Among them, AMO-10 completely (100%) oxidised 30 mM of As(III) within 24 h. The presence of the aoxB gene was confirmed in the screened isolates. Phylogenetic tree construction based on the aoxB sequence revealed that two strains, AGO-S5 and AGH-02, clustered with Achromobacter and Variovorax, whereas the other two (AMO-10 and ADP-25) remained unclustered. The increased rate of As(III) oxidation by these native strains might be exploited for the remediation of As in contaminated environments. Notably, this study presents the first correlation regarding the presence of the aoxB gene and As(III) oxidation ability in Geobacillus stearothermophilus.
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Affiliation(s)
- Aparajita Majumder
- Arsenic Research Laboratory, Bidhan Chandra Krishi Viswavidyalaya, Kalyani 741235, West Bengal, India.
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Lv HL, Li SY, Mu XL, Jiang YF. NaAsO 2 induces cytotoxicity to rat bone marrow mesenchymal stem cells. Shijie Huaren Xiaohua Zazhi 2013; 21:1649-1653. [DOI: 10.11569/wcjd.v21.i17.1649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the toxic effect of NaAsO2 on rat bone marrow mesenchymal stem cells (MSCs) and to explore the possible mechanism involved.
METHODS: Cultured rat bone MSCs were exposed to different concentrations of NaAsO2 (10, 20, 30, 40 and 50 μmol/L) for 24 h. MTT assay was used to evaluate cell viability. The level of reactive oxygen species (ROS) was detected by staining cells with DCFH-DA. The content of malondialdehyde (MDA) and activity of superoxide dismutase (SOD) in rat bone MSCs were also measured.
RESULTS: Treatment with NaAsO2 significantly decreased cell viability, GSH content and SOD activity, increased ROS and MDA formation, and induced Caspase 3 activation in rat bone MSCs cells.
CONCLUSION: Our findings suggest that NaAsO2-induced oxidative stress may cause MSC apoptosis via mitochondria-dependent signaling pathways.
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Sarkar A, Kazy SK, Sar P. Characterization of arsenic resistant bacteria from arsenic rich groundwater of West Bengal, India. ECOTOXICOLOGY (LONDON, ENGLAND) 2013; 22:363-376. [PMID: 23238642 DOI: 10.1007/s10646-012-1031-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/04/2012] [Indexed: 06/01/2023]
Abstract
Sixty-four arsenic (As) resistant bacteria isolated from an arsenic rich groundwater sample of West Bengal were characterized to investigate their potential role in subsurface arsenic mobilization. Among the isolated strains predominance of genera Agrobacterium/Rhizobium, Ochrobactrum and Achromobacter which could grow chemolitrophically and utilize arsenic as electron donor were detected. Higher tolerance to As(3+) [maximum tolerable concentration (MTC): ≥10 mM], As(5+) (MTC: ≥100 mM) and other heavy metals like Cu(2+), Cr(2+), Ni(2+) etc. (MTC: ≥10 mM), presence of arsenate reductase and siderophore was frequently observed among the isolates. Ability to produce arsenite oxidase and phosphatase enzyme was detected in 50 and 34 % of the isolates, respectively. Although no direct correlation among taxonomic identity of bacterial strains and their metabolic abilities as mentioned above was apparent, several isolates affiliated to genera Ochrobactrum, Achromobacter and unclassified Rhizobiaceae members were found to be highly resistant to As(3+) and As(5+) and positive for all the test properties. Arsenate reductase activity was found to be conferred by arsC gene, which in many strains was coupled with arsenite efflux gene arsB as well. Phylogenetic incongruence between the 16S rRNA and ars genes lineages indicated possible incidence of horizontal gene transfer for ars genes. Based on the results we propose that under the prevailing low nutrient condition inhabitant bacteria capable of using inorganic electron donors play a synergistic role wherein siderophores and phosphatase activities facilitate the release of sediment bound As(5+), which is subsequently reduced by arsenate reductase resulting into the mobilization of As(3+) in groundwater.
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Affiliation(s)
- Angana Sarkar
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, India
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Bolan NS, Choppala G, Kunhikrishnan A, Park J, Naidu R. Microbial transformation of trace elements in soils in relation to bioavailability and remediation. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2013; 225:1-56. [PMID: 23494555 DOI: 10.1007/978-1-4614-6470-9_1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- Nanthi S Bolan
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA, Australia,
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Zheng R, Sun G, Zhu Y. Effects of microbial processes on the fate of arsenic in paddy soil. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5489-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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