1
|
Zhang Y, Boyanov MI, O'Loughlin EJ, Kemner KM, Sanford RA, Kim HS, Park SC, Kwon MJ. Reaction pathways and Sb(III) minerals formation during the reduction of Sb(V) by Rhodoferax ferrireducens strain YZ-1. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133240. [PMID: 38134691 DOI: 10.1016/j.jhazmat.2023.133240] [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: 09/25/2023] [Revised: 11/30/2023] [Accepted: 12/10/2023] [Indexed: 12/24/2023]
Abstract
Antimony (Sb), a non-essential metalloid, can be released into the environment through various industrial activities. Sb(III) is considered more toxic than Sb(V), but Sb(III) can be immobilized through the precipitation of insoluble Sb2S3 or Sb2O3. In the subsurface, Sb redox chemistry is largely controlled by microorganisms; however, the exact mechanisms of Sb(V) reduction to Sb(III) are still unclear. In this study, a new strain of Sb(V)-reducing bacterium, designated as strain YZ-1, that can respire Sb(V) as a terminal electron acceptor was isolated from Sb-contaminated soils. 16S-rRNA gene sequencing of YZ-1 revealed high similarity to a known Fe(III)-reducer, Rhodoferax ferrireducens. XRD and XAFS analyses revealed that bioreduction of Sb(V) to Sb(III) proceed through a transition from amorphous valentinite to crystalline senarmontite (allotropes of Sb2O3). Genomic DNA sequencing found that YZ-1 possesses arsenic (As) metabolism genes, including As(V) reductase arsC. The qPCR analysis showed that arsC was highly expressed during Sb(V)-reduction by YZ-1, and thus is proposed as the potential Sb(V) reductase in YZ-1. This study provides new insight into the pathways and products of microbial Sb(V) reduction and demonstrates the potential of a newly isolated bacterium for Sb bioremediation.
Collapse
Affiliation(s)
- Yidan Zhang
- Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Maxim I Boyanov
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439, USA; Bulgarian Academy of Sciences, Institute of Chemical Engineering, Sofia 1113, Bulgaria
| | | | - Kenneth M Kemner
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Robert A Sanford
- Department of Earth Science & Environmental Change, University of Illinois Urbana-Champaign, Champaign, IL 61801, USA
| | - Han-Suk Kim
- Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Soo-Chan Park
- Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Man Jae Kwon
- Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Republic of Korea.
| |
Collapse
|
2
|
Peco JD, Thouin H, Esbrí JM, Campos-Rodríguez HR, García-Noguero EM, Breeze D, Villena J, Gloaguen E, Higueras PL, Battaglia-Brunet F. Mobility of antimony in contrasting surface environments of a mine site: influence of redox conditions and microbial communities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:105808-105828. [PMID: 37721674 DOI: 10.1007/s11356-023-29734-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/02/2023] [Indexed: 09/19/2023]
Abstract
Microbial processes can influence the complex geochemical behaviour of the toxic metalloid antimony (Sb) in mining environments. The present study is aimed to evaluate the influence of microbial communities on the mobility of Sb from solid phases to water in different compartments and redox conditions of a mining site in southwest (SW) Spain. Samples of surface materials presenting high Sb concentrations, from two weathered mining waste dumps, and an aquatic sediment were incubated in slurries comparing oxic and anoxic conditions. The initial microbial communities of the three materials strongly differed. Incubations induced an increase of microbial biomass and an evolution of the microbial communities' structures and compositions, which diverged in different redox conditions. The presence of active bacteria always influenced the mobility of Sb, except in the neutral pH waste incubated in oxic conditions. The effect of active microbial activities in oxic conditions was dependent on the material: Sb oxic release was biologically amplified with the acidic waste, but attenuated with the sediment. Different bacterial genera involved in Sb, Fe and S oxidation or reduction were present and/or grew during incubation of each material. The results highlighted the wide diversity of microbial communities and metabolisms at the small geographic scale of a mining site and their strong implication in Sb mobility.
Collapse
Affiliation(s)
- Jesús Daniel Peco
- Instituto de Geología Aplicada, Escuela Universitaria Politécnica de Almadén, Universidad de Castilla-La Mancha, Plaza Manuel Meca, Ciudad Real, 13400, Almadén, Spain
- Escuela Técnica Superior de Ingenieros Agrónomos de Ciudad Real, Universidad de Castilla-La Mancha, Ronda de Calatrava 7, 13071, Ciudad Real, Spain
| | - Hugues Thouin
- BRGM, 3 Av. Claude Guillemin, 45060, Orléans, France
| | - José María Esbrí
- Departamento de Mineralogía y Petrología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | | | - Eva Maria García-Noguero
- Instituto de Geología Aplicada, Escuela Universitaria Politécnica de Almadén, Universidad de Castilla-La Mancha, Plaza Manuel Meca, Ciudad Real, 13400, Almadén, Spain
| | | | - Jaime Villena
- Escuela Técnica Superior de Ingenieros Agrónomos de Ciudad Real, Universidad de Castilla-La Mancha, Ronda de Calatrava 7, 13071, Ciudad Real, Spain
| | - Eric Gloaguen
- CNRS, BRGM, ISTO, UMR 7327, Université d'Orléans, 45071, Orléans, France
| | - Pablo Leon Higueras
- Instituto de Geología Aplicada, Escuela Universitaria Politécnica de Almadén, Universidad de Castilla-La Mancha, Plaza Manuel Meca, Ciudad Real, 13400, Almadén, Spain
| | | |
Collapse
|
3
|
Lv Y, Zhang C, Nan C, Fan Z, Huang S. Induced transformation of antimony trioxide by Mn(II) oxidation and their co-transformed mechanism. J Environ Sci (China) 2023; 129:69-78. [PMID: 36804243 DOI: 10.1016/j.jes.2022.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/27/2022] [Accepted: 09/10/2022] [Indexed: 06/18/2023]
Abstract
Antimony (Sb) is a toxic and carcinogenic element that often enters soil in the form of antimony trioxide (Sb2O3) and coexists with manganese (Mn) in weakly alkaline conditions. Mn oxides such as birnessite have been found to promote the oxidative dissolution of Sb2O3, but few researches concerned the co-transformations of Sb2O3 and Mn(II) in environment. This study investigated the mutual effect of abiotic oxidation of Mn(II) and the coupled oxidative dissolution of Sb2O3. The influencing factors, such as Mn(II) concentrations, pH and oxygen were also discussed. Furthermore, their co-transformed mechanism was also explored based on the analysis of Mn(II) oxidation products with or without Sb2O3 using XRD, SEM and XPS. The results showed that the oxidative dissolution of Sb2O3 was enhanced under higher pH and higher Mn(II) loadings. With a lower Mn(II) concentration such as 0.01 mmol/L Mn(II) at pH 9.0, the improved dissolution of Sb2O3 was attributed to the generation of dissolved intermediate Mn(III) species with strong oxidation capacity. However, under higher Mn(II) concentrations, both amorphous Mn(III) oxides and intermediate Mn(III) species were responsible for promoting the oxidative dissolution of Sb2O3. Most released Sb (∼72%) was immobilized by Mn oxides and Sb(V) was dominant in the adsorbed and dissolved total Sb. Meanwhile, the presence of Sb2O3 not only inhibited the removal of Mn(II) by reducing Mn(III) to Mn(II) but also affected the final products of Mn oxides. For example, amorphous Mn oxides were formed instead of crystalline Mn(III) oxides, such as MnOOH. Furthermore, rhodochrosite (MnCO3) was formed with the high Mn(II)/Sb2O3 ratio, but without being observed in the low Mn(II)/Sb2O3 ratio. The results of study could help provide more understanding about the fate of Sb in the environment and the redox transformation of Mn.
Collapse
Affiliation(s)
- You Lv
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Caixiang Zhang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, Wuhan 430074, China.
| | - Chao Nan
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Zenghui Fan
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Shuxin Huang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| |
Collapse
|
4
|
Xu R, Kolton M, Tao W, Sun X, Su P, Huang D, Zhang M, Yang Z, Guo Z, Gao H, Wang Q, Li B, Chen C, Sun W. Anaerobic selenite-reducing bacteria and their metabolic potentials in Se-rich sediment revealed by the combination of DNA-stable isotope probing, metagenomic binning, and metatranscriptomics. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131834. [PMID: 37327607 DOI: 10.1016/j.jhazmat.2023.131834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 06/04/2023] [Accepted: 06/09/2023] [Indexed: 06/18/2023]
Abstract
Microorganisms play a critical role in the biogeochemical cycling of selenium (Se) in aquatic environments, particularly in reducing the toxicity and bioavailability of selenite (Se(IV)). This study aimed to identify putative Se(IV)-reducing bacteria (SeIVRB) and investigate the genetic mechanisms underlying Se(IV) reduction in anoxic Se-rich sediment. Initial microcosm incubation confirmed that Se(IV) reduction was driven by heterotrophic microorganisms. DNA stable-isotope probing (DNA-SIP) analysis identified Pseudomonas, Geobacter, Comamonas, and Anaeromyxobacter as putative SeIVRB. High-quality metagenome-assembled genomes (MAGs) affiliated with these four putative SeIVRB were retrieved. Annotation of functional gene indicated that these MAGs contained putative Se(IV)-reducing genes such as DMSO reductase family, fumarate and sulfite reductases. Metatranscriptomic analysis of active Se(IV)-reducing cultures revealed significantly higher transcriptional levels of genes associated with DMSO reductase (serA/PHGDH), fumarate reductase (sdhCD/frdCD), and sulfite reductase (cysDIH) compared to those in cultures not amended with Se(IV), suggesting that these genes played important roles in Se(IV) reduction. The current study expands our knowledge of the genetic mechanisms involved in less-understood anaerobic Se(IV) bio-reduction. Additinally, the complementary abilities of DNA-SIP, metagenomics, and metatranscriptomics analyses are demonstrated in elucidating the microbial mechanisms of biogeochemical processes in anoxic sediment.
Collapse
Affiliation(s)
- Rui Xu
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Max Kolton
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Wan Tao
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Xiaoxu Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Pingzhou Su
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Duanyi Huang
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Miaomiao Zhang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zhaohui Yang
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Hanbing Gao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Qi Wang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Baoqin Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Chengyu Chen
- College of Natural Resources and Environment, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, South China Agricultural University, Guangzhou 510642, China
| | - Weimin Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China; School of Environment, Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education), Henan Normal University, Xinxiang 453007, PR China.
| |
Collapse
|
5
|
Moreno-Andrade I, Sierra-Alvarez R, Pérez-Rangel M, Barrera C, Field JA, Pat-Espadas A. Antimony toxicity upon microorganisms from aerobic and anaerobic environments. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2023; 58:61-68. [PMID: 36751723 DOI: 10.1080/10934529.2023.2176664] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/05/2023] [Accepted: 01/07/2023] [Indexed: 06/18/2023]
Abstract
Antimony (Sb) is a toxic and carcinogenic metalloid that can be present in contaminated water generated by mining operations and other industrial activities. The toxicity of Sb (III) and Sb (V) to aerobic microorganisms remains limited and unexplored for anaerobic microorganisms involved in hydrogen (H2) and methane (CH4) production. This study aimed to evaluate the toxicity of Sb (III) and Sb (V) upon aerobic and anaerobic microorganisms important in biological wastewater treatment systems. Sb (III) was more toxic than Sb (V) independently of the test and environment evaluated. Under aerobic conditions maintained in the Microtox assay, Sb (V) was not toxic to Allivibrio fischeri at concentrations as high as 500 mg/L, whereas Sb (III) caused just over 50% inhibition at concentration of 250 mg/L after 5 min of exposure. In the respirometry test, for the specific oxygen uptake rate, the concentrations of Sb (III) and Sb (V) displaying 50% inhibition were 0.09 and 56.2 mg/L, respectively. Under anaerobic conditions, exposure to Sb (III) and Sb (V) led to a decrease in microorganisms activity of fermentative and methanogenic processes. The results confirm that the microbial toxicity of Sb depends on its speciation and Sb (III) displays a significantly higher inhibitory potential than Sb (V) in both aerobic and anaerobic environments.
Collapse
Affiliation(s)
- Ivan Moreno-Andrade
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Laboratory for Research on Advanced Processes for Water Treatment, Unidad Academica Juriquilla, Queretaro, Mexico
| | - Reyes Sierra-Alvarez
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, Arizona, USA
| | - Marisol Pérez-Rangel
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Laboratory for Research on Advanced Processes for Water Treatment, Unidad Academica Juriquilla, Queretaro, Mexico
| | - Cinthya Barrera
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Laboratory for Research on Advanced Processes for Water Treatment, Unidad Academica Juriquilla, Queretaro, Mexico
| | - Jim A Field
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, Arizona, USA
| | - Aurora Pat-Espadas
- Institute of Geology, Estación Regional del Noroeste, Universidad Nacional Autónoma de México, Luis Donaldo Colosio s/n, Hermosillo, Sonora, Mexico
| |
Collapse
|
6
|
Zhang Y, O'Loughlin EJ, Kwon MJ. Antimony redox processes in the environment: A critical review of associated oxidants and reductants. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128607. [PMID: 35359101 DOI: 10.1016/j.jhazmat.2022.128607] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/16/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
The environmental behavior of antimony (Sb) has recently received greater attention due to the increasing global use of Sb in a range of industrial applications. Although present at trace levels in most natural systems, elevated Sb concentrations in aquatic and terrestrial environments may result from anthropogenic activities. The mobility and toxicity of Sb largely depend on its speciation, which is dependent to a large extent on its oxidation state. To a certain extent, our understanding of the environmental behavior of Sb has been informed by studies of the environmental behavior of arsenic (As), as Sb and As have somewhat similar chemical properties. However, recently it has become evident that the speciation of Sb and As, especially in the context of redox reactions, may be fundamentally different. Therefore, it is crucial to study the biogeochemical processes impacting Sb redox transformations to understand the behavior of Sb in natural and engineered environments. Currently, there is a growing body of literature involving the speciation, mobility, toxicity, and remediation of Sb, and several reviews on these general topics are available; however, a comprehensive review focused on Sb environmental redox chemistry is lacking. This paper provides a review of research conducted within the past two decades examining the redox chemistry of Sb in aquatic and terrestrial environments and identifies knowledge gaps that need to be addressed to develop a better understanding of Sb biogeochemistry for improved management of Sb in natural and engineered systems.
Collapse
Affiliation(s)
- Yidan Zhang
- Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Republic of Korea
| | | | - Man Jae Kwon
- Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Republic of Korea.
| |
Collapse
|
7
|
Li H, Fei Y, Xue S, Zhang G, Bian Z, Guo F, Wang L, Chai R, Zhang S, Cui Z, Wang S, Zhang J. Removal of Antimony in Wastewater by Antimony Tolerant Sulfate-Reducing Bacteria Isolated from Municipal Sludge. Int J Mol Sci 2022; 23:ijms23031594. [PMID: 35163515 PMCID: PMC8836028 DOI: 10.3390/ijms23031594] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/19/2022] [Accepted: 01/25/2022] [Indexed: 02/06/2023] Open
Abstract
Antimony (Sb), a global and priority controlled pollutant, causes severe environmental issues. Bioremediation by microbial communities containing sulfate-reducing bacteria (SRB) is considered to be among the safest, economical, and environmentally friendly methods to remove Sb from wastewater. However, the roles of SRB species in these communities remain uncertain, and pure cultures of bacteria that may be highly efficient have not yet been developed for Sb removal. In this study, an Sb tolerant community was enriched from municipal sludge, and molecular ecological analysis showed that Escherichia (40%) and Desulfovibrio (15%) were the dominant bacteria. Further isolation and identification showed that the enriched SRB strains were closely related to Cupidesulfovibrio oxamicus, based on the molecular analyses of 16S rRNA and dsrB genes. Among them, a strain named SRB49 exhibited the highest activity in removal of Sb(V). SRB49 was able to remove 95% of Sb(V) at a concentration of 100 mg/L within 48 h under optimum conditions: a temperature of 37–40 °C, an initial pH value of 8, 4 mM of sulfate, and an initial redox potential of 145–229 mV. SEM-EDX analysis showed that SRB49 did not adsorb Sb(V) but reduced and precipitated Sb(V) via the formation of Sb2S3. The results demonstrated the potential roles that pure cultures of SRB species may play in Sb removal and the use of Sb-tolerant SRB strains for Sb remediation.
Collapse
Affiliation(s)
- He Li
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Yue Fei
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Shuwen Xue
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Gege Zhang
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Ziqi Bian
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Fanfan Guo
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Li Wang
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Ruiqing Chai
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Shuqi Zhang
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Zhenyu Cui
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
| | - Shiwei Wang
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
- Correspondence: (S.W.); (J.Z.)
| | - Jun Zhang
- College of Life Sciences, Northwest University, Xi’an 710069, China; (H.L.); (Y.F.); (S.X.); (G.Z.); (Z.B.); (F.G.); (L.W.); (R.C.); (S.Z.); (Z.C.)
- Shaanxi Key Laboratory of Animal Conservation, College of Life Sciences, Northwest University, Xi’an 710069, China
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an 710069, China
- Correspondence: (S.W.); (J.Z.)
| |
Collapse
|
8
|
Yamamura S, Iida C, Kobayashi Y, Watanabe M, Amachi S. Production of two morphologically different antimony trioxides by a novel antimonate-reducing bacterium, Geobacter sp. SVR. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125100. [PMID: 33486228 DOI: 10.1016/j.jhazmat.2021.125100] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
A novel dissimilatory antimonate [Sb(V)]-reducing bacterium, strain SVR, was isolated from soil of a former antimony (Sb) mine. Strain SVR coupled Sb(V) reduction to acetate oxidation with an apparent reduction rate of 2.4 mM d-1. The reduction of Sb(V) was followed by the precipitation and accumulation of white microcrystals in the liquid medium. The precipitates were initially small and amorphous, but they eventually developed to the crystal phase with a length > 50 µm. Strain SVR removed 96% of dissolved Sb as the precipitates. An X-ray diffraction analysis indicated that the microcrystals were the orthorhombic Sb trioxide (Sb2O3), i.e., valentinite. Phylogenetic and physiological analyses revealed that strain SVR is a member of the genus Geobacter. The cell suspension of strain SVR incubated with acetate and Sb(V) at pH 7.0 was able to form valentinite. Interestingly, at pH 8.0, the cell suspension formed another crystalline Sb2O3 with a cubic structure, i.e., senarmontite. Our findings provide direct evidence that Geobacter spp. are involved in Sb(V) reduction in nature. Considering its superior capacity for Sb removal, strain SVR could be used for the recovery of Sb and the individual productions of valentinite and senarmontite from Sb-contaminated wastewater.
Collapse
Affiliation(s)
- Shigeki Yamamura
- Center for Regional Environmental Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Chisato Iida
- Graduate School of Horticulture, Chiba University, 648 Matsudo, Matsudo, Chiba 271-8510, Japan
| | - Yayoi Kobayashi
- Center for Health and Environment Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Mirai Watanabe
- Center for Regional Environmental Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Seigo Amachi
- Graduate School of Horticulture, Chiba University, 648 Matsudo, Matsudo, Chiba 271-8510, Japan
| |
Collapse
|
9
|
Wells M, Basu P, Stolz JF. The physiology and evolution of microbial selenium metabolism. Metallomics 2021; 13:6261189. [PMID: 33930157 DOI: 10.1093/mtomcs/mfab024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/27/2022]
Abstract
Selenium is an essential trace element whose compounds are widely metabolized by organisms from all three domains of life. Moreover, phylogenetic evidence indicates that selenium species, along with iron, molybdenum, tungsten, and nickel, were metabolized by the last universal common ancestor of all cellular lineages, primarily for the synthesis of the 21st amino acid selenocysteine. Thus, selenium metabolism is both environmentally ubiquitous and a physiological adaptation of primordial life. Selenium metabolic reactions comprise reductive transformations both for assimilation into macromolecules and dissimilatory reduction of selenium oxyanions and elemental selenium during anaerobic respiration. This review offers a comprehensive overview of the physiology and evolution of both assimilatory and dissimilatory selenium metabolism in bacteria and archaea, highlighting mechanisms of selenium respiration. This includes a thorough discussion of our current knowledge of the physiology of selenocysteine synthesis and incorporation into proteins in bacteria obtained from structural biology. Additionally, this is the first comprehensive discussion in a review of the incorporation of selenium into the tRNA nucleoside 5-methylaminomethyl-2-selenouridine and as an inorganic cofactor in certain molybdenum hydroxylase enzymes. Throughout, conserved mechanisms and derived features of selenium metabolism in both domains are emphasized and discussed within the context of the global selenium biogeochemical cycle.
Collapse
Affiliation(s)
- Michael Wells
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - Partha Basu
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - John F Stolz
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| |
Collapse
|
10
|
Johnson CR, Antonopoulos DA, Boyanov MI, Flynn TM, Koval JC, Kemner KM, O'Loughlin EJ. Reduction of Sb(V) by coupled biotic-abiotic processes under sulfidogenic conditions. Heliyon 2021; 7:e06275. [PMID: 33681496 PMCID: PMC7930292 DOI: 10.1016/j.heliyon.2021.e06275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/26/2021] [Accepted: 02/09/2021] [Indexed: 01/05/2023] Open
Abstract
Increasing use and mining of antimony (Sb) has resulted in greater concern involving its fate and transport in the environment. Antimony(V) and (III) are the two most environmentally relevant oxidation states, but little is known about the redox transitions between the two in natural systems. To better understand the behavior of antimony in anoxic environments, the redox transformations of Sb(V) were studied in biotic and abiotic reactors. The biotic reactors contained Sb(V) (2 mM as KSb(OH)6), ferrihydrite (50 mM Fe(III)), sulfate (10 mM), and lactate (10 mM), that were inoculated with sediment from a wetland. In the abiotic reactors, The interaction of Sb(V) with green rust, magnetite, siderite, vivianite or mackinawite was examined under abiotic conditions. Changes in the concentrations of Sb, Fe(II), sulfate, and lactate, as well as the microbial community composition were monitored over time. Lactate was rapidly fermented to acetate and propionate in the bioreactors, with the latter serving as the primary electron donor for dissimilatory sulfate reduction (DSR). The reduction of ferrihydrite was primarily abiotic, being driven by biogenic sulfide. Sb and Fe K-edge X-ray absorption near edge structure (XANES) analysis showed reduction of Sb(V) to Sb(III) within 4 weeks, concurrent with DSR and the formation of FeS. Sb K-edge extended X-ray absorption fine structure (EXAFS) spectroscopy analysis indicated that the reduced phase was a mixture of S- and O-coordinated Sb(III). Reduction of Sb(V) was not observed in the presence of magnetite, siderite, or green rust, and limited reduction occurred with vivianite. However, reduction of Sb(V) to amorphous Sb(III) sulfide occurred with mackinawite. These results are consistent with abiotic reduction of Sb(V) by biogenic sulfide and reveal a substantial influence of Fe oxides on the speciation of Sb(III), which illustrates the tight coupling of Sb speciation with the biogeochemical cycling of S and Fe.
Collapse
Affiliation(s)
- Clayton R Johnson
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439-4843
| | | | - Maxim I Boyanov
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439-4843.,Bulgarian Academy of Sciences, Institute of Chemical Engineering, Sofia, 1113, Bulgaria
| | - Theodore M Flynn
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439-4843
| | - Jason C Koval
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439-4843
| | - Kenneth M Kemner
- Biosciences Division, Argonne National Laboratory, Lemont, IL 60439-4843
| | | |
Collapse
|
11
|
Yang Z, Hosokawa H, Kuroda M, Inoue D, Ike M. Microbial antimonate reduction and removal potentials in river sediments. CHEMOSPHERE 2021; 266:129192. [PMID: 33310524 DOI: 10.1016/j.chemosphere.2020.129192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 10/23/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Antimony (Sb), a toxic metalloid, exists mainly as Sb(V) and Sb(III) in the aquatic environment. Sb(V) displays greater solubility and can be reduced to insoluble Sb(III) compounds by microbial activities under anaerobic conditions, thus affecting the environmental fate of Sb. This study was conducted to evaluate the potential of Sb(V) reduction and removal from the aqueous phase by microbial communities existing in river sediments with and without the impact of Sb mining activities. Among the 14 tested sediment samples, which were collected from an urban river without Sb impact and a river flowing through mining area, microbial communities in two samples could reduce and remove Sb(V) in the presence of high concentrations of sulfate, whereas those in other six samples could reduce Sb(V) even under low sulfate concentrations, indicating the relatively wide distribution of microbial Sb(V) reduction potential in the environment, irrespective of the anthropogenic impact. The Sb(V) reduction and removal abilities under different sulfate levels also suggested the presence of multiple types of Sb(V) reduction and removal pathways, including the direct Sb(V) reduction by anaerobic respiration, indirect (chemical) Sb(V) reduction by sulfide produced by microbial sulfate reduction, and their combination. Furthermore, analysis of microbial communities in two enrichment cultures, which were constructed from sediment samples with Sb(V) reduction ability under the minimum sulfate condition and maintained Sb(V) removal ability during 28-d enrichment process, revealed possible contribution of several microbial taxa such as Azospira, Chlostridium, Dechloromonas, Dendrosporobacter, and Halodesulfovibrio to Sb(V) reduction in sediment microbial communities.
Collapse
Affiliation(s)
- Ziran Yang
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hisaaki Hosokawa
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masashi Kuroda
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Daisuke Inoue
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Michihiko Ike
- Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| |
Collapse
|
12
|
Park SC, Boyanov MI, Kemner KM, O'Loughlin EJ, Kwon MJ. Distribution and speciation of Sb and toxic metal(loid)s near an antimony refinery and their effects on indigenous microorganisms. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123625. [PMID: 32818830 DOI: 10.1016/j.jhazmat.2020.123625] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/25/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
Although several studies have investigated the effects of Sb contamination on surrounding environments and indigenous microorganisms, little is known about the effect of co-contamination of Sb and toxic metal(loid)s. In this study, the occurrence of Sb and other toxic metal(loid)s near an operating Sb refinery and near-field landfill site were investigated. Topsoil samples near the refinery had high Sb levels (∼3250 mg kg-1) but relatively low concentrations of other toxic metal(loid)s. However, several soil samples taken at greater depth from the near-field landfill site contained high concentrations of As and Pb, as well as extremely high Sb contents (∼21,400 mg kg-1). X-ray absorption fine structure analysis showed that Sb in the soils from both sites was present as Sb(V) in the form of tripuhyite (FeSbO4), a stable mineral. Three-dimensional principal coordinate analysis showed that microbial community compositions in samples with high toxic metal(loid)s concentrations were significantly different from other samples and had lower microbial populations (∼104 MPN g-1). Sequential extraction results revealed that Sb is present primarily in the stable residual fraction (∼99 %), suggesting low Sb bioavailability. However, microbial redundancy analysis suggested that the more easily extractable Pb might be the major factor controlling microbial community compositions at the site.
Collapse
Affiliation(s)
- Soo-Chan Park
- Dept. Earth and Environmental Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Maxim I Boyanov
- Bulgarian Academy of Sciences, Institute of Chemical Engineering, Sofia, 1113, Bulgaria; Biosciences Division, Argonne National Laboratory, Lemont, IL, 60439 USA
| | - Kenneth M Kemner
- Biosciences Division, Argonne National Laboratory, Lemont, IL, 60439 USA
| | | | - Man Jae Kwon
- Dept. Earth and Environmental Sciences, Korea University, Seoul, 02841, Republic of Korea.
| |
Collapse
|
13
|
Wells M, Stolz JF. Microbial selenium metabolism: a brief history, biogeochemistry and ecophysiology. FEMS Microbiol Ecol 2020; 96:5921172. [DOI: 10.1093/femsec/fiaa209] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/08/2020] [Indexed: 01/02/2023] Open
Abstract
ABSTRACTSelenium is an essential trace element for organisms from all three domains of life. Microorganisms, in particular, mediate reductive transformations of selenium that govern the element's mobility and bioavailability in terrestrial and aquatic environments. Selenium metabolism is not just ubiquitous but an ancient feature of life likely extending back to the universal common ancestor of all cellular lineages. As with the sulfur biogeochemical cycle, reductive transformations of selenium serve two metabolic functions: assimilation into macromolecules and dissimilatory reduction during anaerobic respiration. This review begins with a historical overview of how research in both aspects of selenium metabolism has developed. We then provide an overview of the global selenium biogeochemical cycle, emphasizing the central role of microorganisms in the cycle. This serves as a basis for a robust discussion of current models for the evolution of the selenium biogeochemical cycle over geologic time, and how knowledge of the evolution and ecophysiology of selenium metabolism can enrich and refine these models. We conclude with a discussion of the ecophysiological function of selenium-respiring prokaryotes within the cycle, and the tantalizing possibility of oxidative selenium transformations during chemolithoautotrophic growth.
Collapse
Affiliation(s)
- Michael Wells
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - John F Stolz
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| |
Collapse
|
14
|
Zhu Y, Yang J, Wang L, Lin Z, Dai J, Wang R, Yu Y, Liu H, Rensing C, Feng R. Factors influencing the uptake and speciation transformation of antimony in the soil-plant system, and the redistribution and toxicity of antimony in plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 738:140232. [PMID: 32806353 DOI: 10.1016/j.scitotenv.2020.140232] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/10/2020] [Accepted: 06/13/2020] [Indexed: 06/11/2023]
Abstract
Antimony (Sb) is not an essential element for humans and plants although it can be used to treat some human diseases, such as schistosomiasis. Sb contamination has been documented in many regions around the world, particularly in China. The Sb contamination in the environment often stems from anthropogenic activities such as mining, smelting, and shooting. Within the latest decade, great progress has been made in research examining the physiochemical behavior of Sb in the environment, including 1) the extent of Sb pollution around the world particularly in China; 2) the mechanisms and factors influencing Sb migration in soils, especially the adsorption/desorption of Sb by minerals or organic materials; 3) the transformations influencing speciation catalyzed by soil microbes; 4) to a lesser extent, the toxicity of Sb to plants and soil animals. In this review, we highlighted the current knowledge with respect to 1) how soil physicochemical properties (including water regimes, pH, organic materials and Eh), and soil organisms will affect the soil bioavailability of Sb, and subsequently the uptake of Sb by plants; 2) the uptake pathway of antimonite and antimonate, the translocation of Sb from roots to shoots, and the redistribution and toxicity of Sb in plants.
Collapse
Affiliation(s)
- YanMing Zhu
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - JiGang Yang
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - LiZhen Wang
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - ZiTing Lin
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - JiaXin Dai
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - RenJie Wang
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - YanShuang Yu
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - Hong Liu
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China.
| | - Christopher Rensing
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - RenWei Feng
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China.
| |
Collapse
|
15
|
Kujala K, Besold J, Mikkonen A, Tiirola M, Planer-Friedrich B. Abundant and diverse arsenic-metabolizing microorganisms in peatlands treating arsenic-contaminated mining wastewaters. Environ Microbiol 2020; 22:1572-1587. [PMID: 31984582 PMCID: PMC7187466 DOI: 10.1111/1462-2920.14922] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 01/17/2023]
Abstract
Mining operations produce large quantities of wastewater. At a mine site in Northern Finland, two natural peatlands are used for the treatment of mining‐influenced waters with high concentrations of sulphate and potentially toxic arsenic (As). In the present study, As removal and the involved microbial processes in those treatment peatlands (TPs) were assessed. Arsenic‐metabolizing microorganisms were abundant in peat soil from both TPs (up to 108 cells gdw−1), with arsenate respirers being about 100 times more abundant than arsenite oxidizers. In uninhibited microcosm incubations, supplemented arsenite was oxidized under oxic conditions and supplemented arsenate was reduced under anoxic conditions, while little to no oxidation/reduction was observed in NaN3‐inhibited microcosms, indicating high As‐turnover potential of peat microbes. Formation of thioarsenates was observed in anoxic microcosms. Sequencing of the functional genemarkers aioA (arsenite oxidizers), arrA (arsenate respirers) and arsC (detoxifying arsenate reducers) demonstrated high diversity of the As‐metabolizing microbial community. The microbial community composition differed between the two TPs, which may have affected As removal efficiencies. In the present situation, arsenate reduction is likely the dominant net process and contributes substantially to As removal. Changes in TP usage (e.g. mine closure) with lowered water tables and heightened oxygen availability in peat might lead to re‐oxidation and re‐mobilization of bound arsenite.
Collapse
Affiliation(s)
- Katharina Kujala
- Water Resources and Environmental Engineering Research Unit, University of Oulu, Oulu, Finland
| | - Johannes Besold
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
| | - Anu Mikkonen
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Marja Tiirola
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Britta Planer-Friedrich
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
| |
Collapse
|
16
|
Nguyen VK, Park Y, Lee T. Microbial antimonate reduction with a solid-state electrode as the sole electron donor: A novel approach for antimony bioremediation. JOURNAL OF HAZARDOUS MATERIALS 2019; 377:179-185. [PMID: 31158587 DOI: 10.1016/j.jhazmat.2019.05.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/01/2019] [Accepted: 05/26/2019] [Indexed: 06/09/2023]
Abstract
The anaerobic antimonate [Sb(V)] reduction with a solid-state electrode serving as the sole electron donor was demonstrated by employing a bioelectrochemical system. The highest Sb(V) reduction efficiency was observed at the biocathode potential of -0.7 V versus standard hydrogen electrode using a cathode potential range from -0.5 V to -1.1 V. The scanning electron microscopy and energy dispersive X-ray spectroscopy indicated that both amorphous and crystallized Sb2O3 were formed as products of Sb(V) reduction. The irreversible recovery of bioelectrochemical Sb(V), when the cathode potential deviated from the optimal potential, was explained through the alteration in microbial communities, which was further elucidated by the next-generation sequencing of 16S rRNA gene amplicons. Chryseobacterium koreense and Stenotrophomonas nitritireducens were the dominant species of microbial consortia at Sb(V)-reducing biocathodes. This study revealed a novel option for bioremediation of Sb at underground contaminated sites, where the delivery of organic electron donors is limited or ineffective.
Collapse
Affiliation(s)
- Van Khanh Nguyen
- Department of Microbiology, Pusan National University, Busan 46241, Republic of Korea.
| | - Younghyun Park
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Taeho Lee
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea.
| |
Collapse
|
17
|
Sun W, Sun X, Li B, Häggblom MM, Han F, Xiao E, Zhang M, Wang Q, Li F. Bacterial response to antimony and arsenic contamination in rice paddies during different flooding conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 675:273-285. [PMID: 31030134 DOI: 10.1016/j.scitotenv.2019.04.146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 03/31/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
Rice is more vulnerable to arsenic (As) and antimony (Sb) contamination than other cereals due to the special cultivation methods, during which irrigation conditions are adjusted depending upon the growth stages. The changes in irrigation conditions may alter the oxidation states of Sb and As, which influences their mobility and bioavailability and hence uptake by rice. In this study, bacterial responses to As and Sb contamination in rice fields were investigated during two different stages of rice growth: the vegetative stage (flooded conditions), and the ripening stage (drained conditions). The substantial changes in the irrigation conditions caused a variation in geochemical parameters including the As- and Sb-extractable fractions. As and Sb were more mobile and bioaccessible during the flooded than under drained conditions. The microbial communities varied during two irrigation conditions, suggesting that the geochemical conditions may have different effects on the innate paddy microbiota. Therefore, various statistical tools including co-occurrence network and random forest (RF) were performed to reveal the environment-microbe interactions in two different irrigation conditions. One of the notable findings is that Sb- and As-related parameters exerted more influences during the flooded than under drained conditions. Furthermore, a detailed RF analysis indicated that the individual bacterial taxa may also respond differently to contaminant fractions during the two irrigation conditions. Notably, RF indicated that individual taxa such as Clostridiaceae and Geobacter may be responsible for biotransformation of As and Sb (e.g., As and Sb reduction). The results provided knowledge for As and Sb transformation during contrasting irrigation conditions and the potential mitigation strategy for contaminant removal.
Collapse
Affiliation(s)
- Weimin Sun
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China.
| | - Xiaoxu Sun
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| | - Baoqin Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| | - Max M Häggblom
- Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ 08901, USA
| | - Feng Han
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| | - Enzong Xiao
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Miaomiao Zhang
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| | - Qi Wang
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| | - Fangbai Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| |
Collapse
|
18
|
Respiratory Selenite Reductase from Bacillus selenitireducens Strain MLS10. J Bacteriol 2019; 201:JB.00614-18. [PMID: 30642986 DOI: 10.1128/jb.00614-18] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 01/03/2019] [Indexed: 11/20/2022] Open
Abstract
The putative respiratory selenite [Se(IV)] reductase (Srr) from Bacillus selenitireducens MLS10 has been identified through a polyphasic approach involving genomics, proteomics, and enzymology. Nondenaturing gel assays were used to identify Srr in cell fractions, and the active band was shown to contain a single protein of 80 kDa. The protein was identified through liquid chromatography-tandem mass spectrometry (LC-MS/MS) as a homolog of the catalytic subunit of polysulfide reductase (PsrA). It was found to be encoded as part of an operon that contains six genes that we designated srrE, srrA, srrB, srrC, srrD, and srrF SrrA is the catalytic subunit (80 kDa), with a twin-arginine translocation (TAT) leader sequence indicative of a periplasmic protein and one putative 4Fe-4S binding site. SrrB is a small subunit (17 kDa) with four putative 4Fe-4S binding sites, SrrC (43 kDa) is an anchoring subunit, and SrrD (24 kDa) is a chaperon protein. Both SrrE (38 kDa) and SrrF (45 kDa) were annotated as rhodanese domain-containing proteins. Phylogenetic analysis revealed that SrrA belonged to the PsrA/PhsA clade but that it did not define a distinct subgroup, based on the putative homologs that were subsequently identified from other known selenite-respiring bacteria (e.g., Desulfurispirillum indicum and Pyrobaculum aerophilum). The enzyme appeared to be specific for Se(IV), showing no activity with selenate, arsenate, or thiosulfate, with a Km of 145 ± 53 μM, a V max of 23 ± 2.5 μM min-1, and a k cat of 23 ± 2.68 s-1 These results further our understanding of the mechanisms of selenium biotransformation and its biogeochemical cycle.IMPORTANCE Selenium is an essential element for life, with Se(IV) reduction a key step in its biogeochemical cycle. This report identifies for the first time a dissimilatory Se(IV) reductase, Srr, from a known selenite-respiring bacterium, the haloalkalophilic Bacillus selenitireducens strain MLS10. The work extends the versatility of the complex iron-sulfur molybdoenzyme (CISM) superfamily in electron transfer involving chalcogen substrates with different redox potentials. Further, it underscores the importance of biochemical and enzymological approaches in establishing the functionality of these enzymes.
Collapse
|
19
|
Nguyen VK, Choi W, Park Y, Yu J, Lee T. Characterization of diversified Sb(V)-reducing bacterial communities by various organic or inorganic electron donors. BIORESOURCE TECHNOLOGY 2018; 250:239-246. [PMID: 29174901 DOI: 10.1016/j.biortech.2017.11.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/11/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
This study aims to enrich Sb(V)-reducing bacterial communities from Sb-contaminated soils using various electron donors for bioremediation of Sb-contaminated sites and recovery of Sb from wastewater. When the organic electron donors were used, Sb(V) reduction rates were 2-24 times faster but electron recoveries were 24-59% lower compared to the culture using inorganic electron donor. The morphological crystallizations of the antimony-reduced precipitates were completely different depending on the electron donor. Different microbial populations were enriched with various electron donors but most commonly, only Proteobacteria and Firmicutes phyla were enriched from a diversified soil microbial community. Geobacter sp. seemed to be an important bacterium in organic electron donors-fed cultures whereas an unclassified Rhodocyclaceae was dominant in inorganic electron donor-fed cultures. The results indicated that organic electron donors especially sugar groups were preferable options to obtain rapid Sb(V)-reduction whereas inorganic electron donor like H2 was better option to achieve high electron recovery.
Collapse
Affiliation(s)
- Van Khanh Nguyen
- Department of Environmental Engineering, Dong-A University, Busan 49315, Republic of Korea.
| | - Wonyoung Choi
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Younghyun Park
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Jaecheul Yu
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Taeho Lee
- Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea.
| |
Collapse
|