1
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Guido A, Calcagnile M, Talà A, Tredici SM, Belmonte G, Alifano P. Microbial consortium involved in ferromanganese and francolite biomineralization in an anchialine environment (Zinzulùsa Cave, Castro, Italy). THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 936:173423. [PMID: 38797412 DOI: 10.1016/j.scitotenv.2024.173423] [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: 03/04/2024] [Revised: 05/03/2024] [Accepted: 05/19/2024] [Indexed: 05/29/2024]
Abstract
Tidally-influenced subterranean settings represent natural geomicrobiological laboratories, relatively unexplored, that facilitate the investigation of new biomineralization processes. The unusual water chemistry of Zinzulùsa Cave and its oligotrophic and aphotic conditions have allowed the development of a unique ecosystem in which complex bacterial activities induce rare biomineralization processes. A diversified microbial community develops on centimeter-thick crusts that form in the submerged part of the cave. The crusts are formed of Ca-phosphate minerals, mostly carbonate-fluoroapatite (francolite), covered by a black crust, few microns in thickness, composed of ferromanganiferous oxides (hematite and vernadite). Diffuse coccoidal and filamentous bacteria and amorphous organic matter are mixed with the minerals. The micromorphologies and comparative 16S rRNA gene-based metabarcoding analyses identify a "core microbiota" also common to other natural environments characterized by FeMn and Ca-phosphate mineralization. The microbiota is characterized by nitrifying, sulfide/sulfur/thiosulfate-oxidizing and sulfate/thiosulfate/sulfur-reducing bacteria. In addition, manganese-oxidizing bacteria include the recently described "Ca. Manganitrophus noduliformans" and an abundance of bacteria belonging to the Planctomycetes-Verrucomicrobia-Chlamydiae (PVC) superphylum, as well as Haliangiales (fruiting body-forming bacteria) and Hyphomicrobiales (stalked and budding bacteria) that are known to produce extracellular polymers that trap iron and manganese oxides. 16S rRNA gene metabarcoding analysis showed the presence of bacteria able to utilize many organic P substrates, including Ramlibacter, and SEM images revealed traces of fossilized microorganisms resembling "cable bacteria", which may play a role in Ca-phosphate biomineralization. Overall, the data indicate biomineralization processes induced by microbial metabolic activities for both ferromanganiferous oxide and francolite components of these crusts.
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Affiliation(s)
- Adriano Guido
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Cosenza, Italy.
| | - Matteo Calcagnile
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy.
| | - Adelfia Talà
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy.
| | | | - Genuario Belmonte
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy.
| | - Pietro Alifano
- Department of Experimental Medicine, University of Salento, Lecce, Italy.
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2
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Choi J, Choi W, Hwang H, Tang Y, Jung H. Natural sunlight-driven oxidation of Mn 2+(aq) and heterogeneous formation of Mn oxides on hematite. CHEMOSPHERE 2024; 348:140734. [PMID: 37977540 DOI: 10.1016/j.chemosphere.2023.140734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/19/2023]
Abstract
The oxidation of dissolved Mn2+(aq) plays a critical role in driving manganese cycles and regulating the fate of essential elements and contaminants in environmental systems. Based on sluggish oxidation rate, abiotic processes have been considered less effective oxidation pathway for manganese oxidation in environmental systems. Interestingly, a recent study (Jung et al., 2021) has shown that the rapid photochemical oxidation of Mn2+(aq) could be a feasible scenario to uncover the potential significance of abiotic Mn2+(aq) oxidation. Nevertheless, the significance of photochemical oxidation of Mn2+(aq) under natural sunlight exposure remains unclear. Here, we demonstrate the rapid photocatalytic oxidation of Mn2+(aq) and the heterogeneous growth of tunnel-structured Mn oxides under simulated freshwater and seawater conditions in the presence of natural sunlight and hematite. The natural sunlight-driven photocatalytic oxidation of Mn2+(aq) by hematite showed kinetic constants of 1.02 h-1 and 0.342 h-1 under freshwater and seawater conditions, respectively. The natural sunlight-driven photocatalytic oxidation rates are quite comparable to the results obtained from the previous laboratory test using artificial sunlight, which has ∼4.5 times stronger light intensity. It is likely because of ∼5.5 times larger light exposure area in the natural sunlight-driven photocatalytic oxidation than that of the laboratory test using artificial sunlight. We also elucidate the roles of cation species in controlling the oxidation rate of Mn2+(aq) and the crystalline structure of Mn oxide products. Specifically, in the presence of large amounts of cations, the oxidation rate of Mn2+(aq) was slower likely because of competitive adsorption. Furthermore, our findings highlight that Mg2+ contributes significantly to the formation of large-tunneled Mn oxides. These results illuminate the importance of abiotic photocatalytic processes in controlling the redox chemistry of Mn in real environmental aqueous systems on the oxidation of Mn2+(aq), and provide an environmentally sustainable approach to effectively remediate water contaminated with Mn2+(aq) using natural sunlight.
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Affiliation(s)
- Junyeong Choi
- Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do, 51140, Republic of Korea
| | - Wooyeol Choi
- Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do, 51140, Republic of Korea
| | - Hoyoung Hwang
- Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do, 51140, Republic of Korea
| | - Yuanzhi Tang
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, 30332, United States.
| | - Haesung Jung
- Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do, 51140, Republic of Korea.
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Wei S, Wang W, Xiao F. Biological Oxidation of Manganese Mediated by the Fungus Neoroussoella solani MnF107. Int J Mol Sci 2023; 24:17093. [PMID: 38069415 PMCID: PMC10707580 DOI: 10.3390/ijms242317093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/18/2023] Open
Abstract
Manganese oxides are highly reactive minerals and influence the geochemical cycling of carbon, nutrients, and numerous metals in natural environments. Natural Mn oxides are believed to be dominantly formed by biotic processes. A marine Mn-oxidizing fungus Neoroussoella solani MnF107 was isolated and characterized in this study. SEM observations show that the Mn oxides are formed on the fungal hyphal surfaces and parts of the hypha are enveloped by Mn oxides. TEM observations show that the Mn oxides have a filamentous morphology and are formed in a matrix of EPS enveloping the fungal cell wall. Mineral phase analysis of the fungal Mn oxides by XRD indicates that it is poorly crystalline. Chemical oxidation state analysis of the fungal Mn oxides confirms that it is predominantly composed of Mn(IV), indicating that Mn(II) has been oxidized to Mn (IV) by the fungus.
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Affiliation(s)
- Shiping Wei
- Key Laboratory of Polar Geology and Marine Mineral Resources (China University of Geosciences, Beijing), Ministry of Education, Beijing 100083, China
- School of Marine Sciences, China University of Geosciences, Beijing 100083, China; (W.W.); (F.X.)
| | - Wenxiu Wang
- School of Marine Sciences, China University of Geosciences, Beijing 100083, China; (W.W.); (F.X.)
| | - Feirong Xiao
- School of Marine Sciences, China University of Geosciences, Beijing 100083, China; (W.W.); (F.X.)
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Bernadet O, Larasati A, van Veelen HPJ, Euverink GJW, Gagliano MC. Biological Oxygen-dosed Activated Carbon (BODAC) filters - A bioprocess for ultrapure water production removing organics, nutrients and micropollutants. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131882. [PMID: 37356180 DOI: 10.1016/j.jhazmat.2023.131882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/27/2023]
Abstract
Biological oxygen-dosed activated carbon (BODAC) filters in an Ultrapure water plant were demonstrated to have the potential to further treat secondary wastewater treatment effluent. The BODAC filters were operated for 11 years without carbon regeneration or replacement, while still functioning as pre-treatment step to reverse osmosis (RO) membranes by actively removing organic micropollutants (OMPs) and foulants. In this study, the removal of nutrients and 13 OMPs from secondary wastewater treatment effluent was investigated for 2 years and simultaneously, the granules' characterization and microbial community analysis were conducted to gain insights behind the stable long-term operation of the BODAC filters. The results showed that the BODAC granules' surface area was reduced by ∼70 % of what is in virgin carbon granules and covered by biofilm and inorganic depositions. The BODAC filters reduced the concentration of soluble organics, mainly proteins, performed as an effective nitrification system, and almost completely removed manganese. During the 2 years of observation, the filters consistently removed some OMPs such as hydrochlorothiazide, metoprolol, sotalol, and trimethoprim by at least 70 %. Finally, through microbial community analysis, we found that nitrifying and manganese-oxidizing bacteria were detected in high relative abundance on BODAC granules, supporting BODAC performance in removing OMPs and manganese as well as converting nitrogenous species in the water.
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Affiliation(s)
- Olga Bernadet
- Wetsus, Center of European Excellence in Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands; Engineering and Technology Institute Groningen (ENTEG), University of Groningen, Nijenborgh 4, Groningen, the Netherlands
| | - Amanda Larasati
- Wetsus, Center of European Excellence in Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands
| | - H Pieter J van Veelen
- Wetsus, Center of European Excellence in Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands
| | - Gert Jan Willem Euverink
- Engineering and Technology Institute Groningen (ENTEG), University of Groningen, Nijenborgh 4, Groningen, the Netherlands.
| | - Maria Cristina Gagliano
- Wetsus, Center of European Excellence in Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands
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Birnbaum C, Wood J, Lilleskov E, Lamit LJ, Shannon J, Brewer M, Grover S. Degradation Reduces Microbial Richness and Alters Microbial Functions in an Australian Peatland. MICROBIAL ECOLOGY 2023; 85:875-891. [PMID: 35867139 PMCID: PMC10156627 DOI: 10.1007/s00248-022-02071-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 07/01/2022] [Indexed: 05/04/2023]
Abstract
Peatland ecosystems cover only 3% of the world's land area; however, they store one-third of the global soil carbon (C). Microbial communities are the main drivers of C decomposition in peatlands, yet we have limited knowledge of their structure and function. While the microbial communities in the Northern Hemisphere peatlands are well documented, we have limited understanding of microbial community composition and function in the Southern Hemisphere peatlands, especially in Australia. We investigated the vertical stratification of prokaryote and fungal communities from Wellington Plains peatland in the Australian Alps. Within the peatland complex, bog peat was sampled from the intact peatland and dried peat from the degraded peatland along a vertical soil depth gradient (i.e., acrotelm, mesotelm, and catotelm). We analyzed the prokaryote and fungal community structure, predicted functional profiles of prokaryotes using PICRUSt, and assigned soil fungal guilds using FUNGuild. We found that the structure and function of prokaryotes were vertically stratified in the intact bog. Soil carbon, manganese, nitrogen, lead, and sodium content best explained the prokaryote composition. Prokaryote richness was significantly higher in the intact bog acrotelm compared to degraded bog acrotelm. Fungal composition remained similar across the soil depth gradient; however, there was a considerable increase in saprotroph abundance and decrease in endophyte abundance along the vertical soil depth gradient. The abundance of saprotrophs and plant pathogens was two-fold higher in the degraded bog acrotelm. Soil manganese and nitrogen content, electrical conductivity, and water table level (cm) best explained the fungal composition. Our results demonstrate that both fungal and prokaryote communities are shaped by soil abiotic factors and that peatland degradation reduces microbial richness and alters microbial functions. Thus, current and future changes to the environmental conditions in these peatlands may lead to altered microbial community structures and associated functions which may have implications for broader ecosystem function changes in peatlands.
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Affiliation(s)
- Christina Birnbaum
- Applied Chemistry and Environmental Science, School of Science, RMIT University Melbourne, Victoria, 3001, Australia.
- School of Life and Environmental Sciences, Faculty of Science & Built Environment, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia.
- School of Agriculture and Environmental Science, The University of Southern Queensland, Toowoomba, QLD, 4350, Australia.
| | - Jennifer Wood
- Physiology, Anatomy and Microbiology, La Trobe University, Science Drive, Bundoora, VIC, 3086, Australia
| | - Erik Lilleskov
- USDA Forest Service, Northern Research Station, 410 MacInnes Dr, Houghton, MI, 49931, USA
| | - Louis James Lamit
- Department of Biology, Syracuse University, 107 College Place, Syracuse, NY, 13244, USA
- Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY, 13210, USA
| | - James Shannon
- Research Centre for Applied Alpine Ecology, Department of Ecology, Environment and Evolution, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Matthew Brewer
- Physiology, Anatomy and Microbiology, La Trobe University, Science Drive, Bundoora, VIC, 3086, Australia
| | - Samantha Grover
- Applied Chemistry and Environmental Science, School of Science, RMIT University Melbourne, Victoria, 3001, Australia
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Liu X, Cai X, Wang P, Yin N, Fan C, Chang X, Huang X, Du X, Wang S, Cui Y. Effect of manganese oxides on arsenic speciation and mobilization in different arsenic-adsorbed iron-minerals under microbially-reducing conditions. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130602. [PMID: 37055999 DOI: 10.1016/j.jhazmat.2022.130602] [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: 09/20/2022] [Revised: 12/09/2022] [Accepted: 12/11/2022] [Indexed: 06/19/2023]
Abstract
The oxidation and immobilization of arsenic (As) by manganese oxides have been shown to reduce As toxicity and bioavailability under abiotic conditions. In this study, we investigate the impact of manganese oxide (δ-MnO2) on the fate of different Fe-minerals-adsorbed As in the presence of As(V)-reducing bacteria Bacillus sp. JQ. Results showed that in the absence of δ-MnO2, As release in goethite was much higher than in ferrihydrite and hematite during microbial reduction. Adding 3.1 mM Mn reduced As release by 0.3%, 46.3%, and 6.7% in the ferrihydrite, goethite, and hematite groups, respectively. However, aqueous As was dominated by As(III) in the end, because the oxidation effect of δ-MnO2 was limited and short-lived. Additionally, the fraction of solid-phase As(V) increased by 9.8% in ferrihydrite, 39.4% in goethite, and 7.4% in hematite in the high-Mn treatments, indicating that δ-MnO2 had the most significant oxidation and immobilization effect on goethite-adsorbed As. This was achieved because goethite particles were evenly distributed on δ-MnO2 surface, which supported As(III) oxidation by δ-MnO2; while ferrihydrite strongly aggregated, which hindered the oxidation of As(III). Our study shows that As-oxidation and immobilization by manganese oxides cannot easily be assessed without considering the mineral composition and microbial conditions of soils.
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Affiliation(s)
- Xiaotong Liu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xiaolin Cai
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
| | - Pengfei Wang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Naiyi Yin
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Chuanfang Fan
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xuhui Chang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xuhan Huang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xin Du
- CHINALCO Environmental protection and Energy Conservation Group Co. Ltd., Beijing 102209, PR China
| | - Shuping Wang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
| | - Yanshan Cui
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
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Pereira F, Kerkar S, Dias DS, Gobre VV. A halophilic Chromohalobacter species from estuarine coastal waters as a detoxifier of manganese, as well as a novel bio-catalyst for synthesis of n-butyl acetate. Front Microbiol 2023; 14:1159018. [PMID: 37125204 PMCID: PMC10130588 DOI: 10.3389/fmicb.2023.1159018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 03/27/2023] [Indexed: 05/02/2023] Open
Abstract
Anthropogenic pollution due to ferro-manganese ore transport by barges through the Mandovi estuary in Goa, India is a major environmental concern. In this study a manganese (Mn) tolerant, moderately halophilic Chromohalobacter sp. belonging to the family Halomonadaceae was isolated from the sediments of a solar saltern adjacent to this Mandovi estuary. Using techniques of Atomic absorption spectroscopy, Scanning electron microscopy-Energy dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy and Atomic Force Microscopy, the Chromohalobacter sp. was explored for its ability to tolerate and immobilize Mn in amended and unamended media with 20% natural salt concentration (w/v). In aqueous media supplemented with 0.1 mM Mn, the Chromohalobacter sp. was capable of sequestering up to 76% Mn with an average immobilization rate of 8 mg Mn /g /day. Growth rate kinetic analysis using Gompertz mathematical functions was found to model the experimental data well. The model inferred that the maximum growth rate of Chromohalobacter sp. was at 10% natural salt concentration (w/v). The Chromohalobacter sp. was further found to be multimetal tolerant showing high tolerance to Iron (Fe), Nickel (Ni) and Cobalt (Co), (each at 4 mM), and tolerated Manganese (Mn) up to 6 mM. Morphologically, the Chromohalobacter sp. was a non-spore forming, Gram negative motile rod (0.726 μ× 1.33 μ). The adaptative mechanism of Chromohalobacter sp. to elevated Mn concentrations (1 mM) resulted in the reduction of its cell size to 0.339 μ× 0.997 μ and the synthesis of an extracellular slime, immobilizing Mn from the liquid phase forming Manganese oxide, as confirmed by Scanning Electron Microscopy. The expression of Mnx genes for manganese oxidation further substantiated the finding. This bacterial synthesized manganese oxide also displayed catalytic activity (∼50% conversion) for the esterification of butan-1-ol with CH3COOH to yield n-butyl acetate. This Chromohalobacter sp. being indigenous to marine salterns, has adapted to high concentrations of heavy metals and high salinities and can withstand this extremely stressed environment, and thus holds a tremendous potential as an environmentally friendly "green bioremediator" of Mn from euryhaline environments. The study also adds to the limited knowledge about metal-microbe interactions in extreme environments. Further, since Chromohalobacter sp. exhibits commendable catalytic activity for the synthesis of n-butyl acetate, it would have several potential industrial applications.
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Affiliation(s)
- Flory Pereira
- Department of Microbiology, P. E. S’s R. S. N. College of Arts and Science, Ponda, India
- *Correspondence: Flory Pereira,
| | - Savita Kerkar
- School of Biological Sciences and Biotechnology, Goa University, Taleigão, India
| | - Dominic Savio Dias
- Department of Chemistry, P. E. S’s R. S. N. College of Arts and Science, Ponda, India
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Nivetha N, Srivarshine B, Sowmya B, Rajendiran M, Saravanan P, Rajeshkannan R, Rajasimman M, Pham THT, Shanmugam V, Dragoi EN. A comprehensive review on bio-stimulation and bio-enhancement towards remediation of heavy metals degeneration. CHEMOSPHERE 2023; 312:137099. [PMID: 36372332 DOI: 10.1016/j.chemosphere.2022.137099] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/20/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Pollution of heavy metals is one of the risky contaminations that should be managed for all intents and purposes of general well-being concerns. The bioaccumulation of these heavy metals inside our bodies and pecking orders will influence our people in the future. Bioremediation is a bio-mechanism where residing organic entities use and reuse the squanders that are reused to one more form. This could be accomplished by taking advantage of the property of explicit biomolecules or biomass that is equipped for restricting by concentrating the necessary heavy metal particles. The microorganisms can't obliterate the metal yet can change it into a less harmful substance. In this unique circumstance, this review talks about the sources, poisonousness, impacts, and bioremediation strategies of five heavy metals: lead, mercury, arsenic, chromium, and manganese. The concentrations here are the ordinary strategies for bioremediation such as biosorption methods, the use of microbes, green growth, and organisms, etc. This review demonstrates the toxicity of heavy metal contamination degradation by biotransformation through bacterioremediation and biodegradation through mycoremediation.
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Affiliation(s)
- N Nivetha
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - B Srivarshine
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - B Sowmya
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | | | - Panchamoorthy Saravanan
- Department of Petrochemical Technology, UCE - BIT Campus, Anna University, Tiruchirappalli, Tamil Nadu, India
| | - R Rajeshkannan
- Department of Chemical Engineering, Annamalai University, Tamilnadu, India
| | - M Rajasimman
- Department of Chemical Engineering, Annamalai University, Tamilnadu, India
| | - Thi Hong Trang Pham
- Institute for Global Health Innovations, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Natural Science, Duy Tan University, Da Nang, 550000, Viet Nam
| | - VenkatKumar Shanmugam
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
| | - Elena-Niculina Dragoi
- "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University, Iasi, Bld Mangeron No 73, 700050, Romania
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Li J, Guo YK, Zhao QX, He JZ, Zhang Q, Cao HY, Liang CQ. Microbial cell wall sorption and Fe-Mn binding in rhizosphere contribute to the obstruction of cadmium from soil to rice. Front Microbiol 2023; 14:1162119. [PMID: 37138638 PMCID: PMC10149983 DOI: 10.3389/fmicb.2023.1162119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/07/2023] [Indexed: 05/05/2023] Open
Abstract
Screening high-tolerant microorganisms to cadmium (Cd) and revealing their bio-obstruction mechanism could be significant for Cd regulation from farmland to the food chain. We examined the tolerance and bio-removal efficiency of Cd ions of two bacterial strains, Pseudomonas putida 23483 and Bacillus sp. GY16, and measured the accumulation of Cd ions in rice tissues and its different chemical forms in soil. The results showed that the two strains had high tolerance to Cd, but the removal efficiency was decreased successively with increasing Cd concentrations (0.05 to 5 mg kg-1). Cell-sorption accounted for the major proportion of Cd removal compared with excreta binding in both strains, which was conformed to the pseudo-second-order kinetics. At the subcellular level, Cd was mostly taken up by the cell mantle and cell wall, and only a small amount entered into the cytomembrane and cytoplasmic with time progressed (0 to 24 h) in each concentration. The cell mantle and cell wall sorption decreased with increasing Cd concentration, especially in the cytomembrane and cytoplasmic. The scanning electron microscope (SEM) and energy dispersive X-ray (EDS) analysis verified that Cd ions were attached to the cell surface, and the functional groups of C-H, C-N, C=O, N-H, and O-H in the cell surface may participate in cell-sorption process tested by the FTIR analysis. Furthermore, inoculation of the two strains significantly decreased Cd accumulation in rice straw and grain but increased in the root, increased Cd enrichment ratio in root from soil, decreased Cd translocation ratio from root to straw and grain, and increased the Cd concentrations of Fe-Mn binding form and residual form in rhizosphere soil. This study highlights that the two strains mainly removed Cd ions in solution through biosorption and passivated soil Cd as Fe-Mn combined form ascribe to its characteristics of manganese-oxidizing, eventually achieving bio-obstruction of Cd from soil to rice grain.
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Affiliation(s)
- Jie Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Yi-Kai Guo
- Ecological Environment Planning and Environmental Protection Technology Center of Qinghai Province, Xining, China
| | - Qing-Xia Zhao
- Institute of New Rural Development, Guizhou University, Guiyang, China
| | - Ji-Zheng He
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia
| | - Qian Zhang
- Key Laboratory of Land Surface Pattern and Simulation, Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Hong-Ying Cao
- Key Laboratory of Land Surface Pattern and Simulation, Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- *Correspondence: Hong-Ying Cao
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10
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Wu R, Yao F, Li X, Shi C, Zang X, Shu X, Liu H, Zhang W. Manganese Pollution and Its Remediation: A Review of Biological Removal and Promising Combination Strategies. Microorganisms 2022; 10:2411. [PMID: 36557664 PMCID: PMC9781601 DOI: 10.3390/microorganisms10122411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Manganese (Mn), as a cofactor of multiple enzymes, exhibits great significance to the human body, plants and animals. It is also a critical raw material and alloying element. However, extensive employment for industrial purposes leads to its excessive emission into the environment and turns into a significant threat to the ecosystem and public health. This review firstly introduces the essentiality, toxicity and regulation of Mn. Several traditional physicochemical methods and their problems are briefly discussed as well. Biological remediation, especially microorganism-mediated strategies, is a potential alternative for remediating Mn-polluted environments in a cost-efficient and eco-friendly manner. Among them, microbially induced carbonate precipitation (MICP), biosorption, bioaccumulation, bio-oxidation are discussed in detail, including their mechanisms, pivotal influencing factors along with strengths and limitations. In order to promote bioremediation efficiency, the combination of different techniques is preferable, and their research progress is also summarized. Finally, we propose the future directions of Mn bioremediation by microbes. Conclusively, this review provides a scientific basis for the microbial remediation performance for Mn pollution and guides the development of a comprehensive competent strategy towards practical Mn remediation.
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Affiliation(s)
| | | | | | | | | | | | - Hengwei Liu
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Wenchao Zhang
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
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11
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Tong M, Zhao Y, Sun Q, Li P, Liu H, Yuan S. Fe(II) oxygenation inhibits bacterial Mn(II) oxidation by P. putida MnB1 in groundwater under O 2-perturbed conditions. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128972. [PMID: 35504131 DOI: 10.1016/j.jhazmat.2022.128972] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/02/2022] [Accepted: 04/17/2022] [Indexed: 06/14/2023]
Abstract
Bacterial Mn(II) oxidation plays a crucial role in Mn cycling and the associated biogeochemistry in natural waters and is of practical concern in the clean-up of excess Mn from drinking water. Fe(II) usually occurring together with Mn(II) in groundwater is oxidized prior to Mn(II) when perturbed by O2, but the impact of Fe(II) oxygenation on the subsequent bacterial Mn(II) oxidation remains unknown. Here we demonstrated that Fe(II) oxygenation largely inhibited the Mn(II)-oxidizing ability of MnB1 belong to Pseudomonas putida which is ubiquitous in groundwater. The mechanisms of the inhibition varied under different Fe(II) concentrations. At high Fe(II) concentrations (≥ 1 mM), the inhibition of bacterial Mn(II) oxidation was mainly because of cell death caused by intracelluar reactive oxygen species. At low Fe(II) concentrations (≤ 0.05 mM), the inhibition of bacterial Mn(II) oxidation was attributed to Fe(III) oxyhydroxides generated from Fe(II) oxygenation. Fe(III) oxyhydroxides attached to cell surface and damaged the cell membrane, resulting in the influx of dissolved Fe into the cell. Transcriptomic analysis revealed that the intracellular Fe suppressed the transcription initiation process and the subsequent generation of multicopper oxidases which were responsible for Mn(II) oxidation. These findings implicate that the inhibition effect of Fe(II) oxygenation on bacterial Mn(II) oxidation should be considered in groundwater-surface water interaction zone and the biological treatment of Fe-Mn containing drinking water.
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Affiliation(s)
- Man Tong
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China; Hubei Key Laboratory of Yangze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China
| | - Yuxi Zhao
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China
| | - Qunqun Sun
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China
| | - Ping Li
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China; Hubei Key Laboratory of Yangze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China
| | - Hui Liu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China; Hubei Key Laboratory of Yangze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China
| | - Songhu Yuan
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China; Hubei Key Laboratory of Yangze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, No. 68 Jincheng Street, East Lake High-Tech Development Zone, Wuhan 430078, PR China.
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12
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Guo XF, Liu ZY, Ren HT, Yu SY, Han X. Photocatalytic oxidation of Mn(II) on the surface of Bi 2.15WO 6via the ligand-to-metal charge transfer (LMCT) pathway. Phys Chem Chem Phys 2022; 24:11527-11535. [PMID: 35506371 DOI: 10.1039/d2cp00623e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biotic and abiotic oxidation of Mn(II) in aqueous environments is an important process for the cycling of many elements. However, the mechanism involved in photocatalytic oxidation of Mn(II) has not been clearly elucidated yet. In this study, the photocatalytic oxidation of Mn(II) on the surface of self-doped Bi2+xWO6 (Bi2.15WO6) under visible light was conducted. Kinetics results show that visible light apparently accelerates the oxidation of Mn(II) to Mn(III, IV) oxides on Bi2.15WO6. The average oxidation states (AOS) of manganese reach 2.18 after 80 min of reaction under visible light at pH 8.50. Characterizations indicate the formation of Bi(III)-O-Mn(II) surface complexes between Mn(II) and surface Bi(III) on Bi2.15WO6, which then decreases the bandgap of [Bi2.15WO6 + Mn(II)]light (2.53 eV) compared with those of [Bi2.15WO6 + Mn(II)]dark (2.72 eV) and pure Bi2.15WO6 (2.86 eV), suggesting the contribution of the ligand-to-metal charge transfer (LMCT) pathway to the photocatalytic oxidation of Mn(II). Moreover, the addition of inorganic oxidants with strong oxidizing capacities (such as Cr2O72-, NO3- or NO2-) significantly increases the oxidation rate of Mn(II), further verifying the contribution of the LMCT pathway to Mn(II) oxidation. We therefore suggest that the LMCT pathway is one of the important oxidation routes for Mn(II) oxidation on Bi2.15WO6 under visible light.
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Affiliation(s)
- Xing-Fei Guo
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Zhao-Yu Liu
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Hai-Tao Ren
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, P. R. China.
| | - Si-Yuan Yu
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Xu Han
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China.
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13
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Comparative Genomics on Cultivated and Uncultivated Freshwater and Marine " Candidatus Manganitrophaceae" Species Implies Their Worldwide Reach in Manganese Chemolithoautotrophy. mBio 2022; 13:e0342121. [PMID: 35285693 PMCID: PMC9040806 DOI: 10.1128/mbio.03421-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Chemolithoautotrophic manganese oxidation has long been theorized but only recently demonstrated in a bacterial coculture. The majority member of the coculture, “Candidatus Manganitrophus noduliformans,” is a distinct but not yet isolated lineage in the phylum Nitrospirota (Nitrospirae). Here, we established two additional MnCO3-oxidizing cultures using inocula from Santa Barbara (California) and Boetsap (South Africa). Both cultures were dominated by strains of a new species, designated “Candidatus Manganitrophus morganii.” The next most abundant members differed in the available cultures, suggesting that while “Ca. Manganitrophus” species have not been isolated in pure culture, they may not require a specific syntrophic relationship with another species. Phylogeny of cultivated “Ca. Manganitrophus” and related metagenome-assembled genomes revealed a coherent taxonomic family, “Candidatus Manganitrophaceae,” from both freshwater and marine environments and distributed globally. Comparative genomic analyses support this family being Mn(II)-oxidizing chemolithoautotrophs. Among the 895 shared genes were a subset of those hypothesized for Mn(II) oxidation (Cyc2 and PCC_1) and oxygen reduction (TO_1 and TO_2) that could facilitate Mn(II) lithotrophy. An unusual, plausibly reverse complex 1 containing 2 additional pumping subunits was also shared by the family, as were genes for the reverse tricarboxylic acid carbon fixation cycle, which could enable Mn(II) autotrophy. All members of the family lacked genes for nitrification found in Nitrospira species. The results suggest that “Ca. Manganitrophaceae” share a core set of candidate genes for the newly discovered manganese-dependent chemolithoautotrophic lifestyle and likely have a broad, global distribution.
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14
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Wu Z, Wang J, Niu C, Liu C, Zheng F, Li Q. Transcriptomic and metabolomic analysis reveals genes related to stress tolerance in high gravity brewing. World J Microbiol Biotechnol 2022; 38:59. [DOI: 10.1007/s11274-021-03115-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
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15
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LaRowe DE, Carlson HK, Amend JP. The Energetic Potential for Undiscovered Manganese Metabolisms in Nature. Front Microbiol 2021; 12:636145. [PMID: 34177823 PMCID: PMC8220133 DOI: 10.3389/fmicb.2021.636145] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 05/03/2021] [Indexed: 11/13/2022] Open
Abstract
Microorganisms are found in nearly every surface and near-surface environment, where they gain energy by catalyzing reactions among a wide variety of chemical compounds. The discovery of new catabolic strategies and microbial habitats can therefore be guided by determining which redox reactions can supply energy under environmentally-relevant conditions. In this study, we have explored the thermodynamic potential of redox reactions involving manganese, one of the most abundant transition metals in the Earth's crust. In particular, we have assessed the Gibbs energies of comproportionation and disproportionation reactions involving Mn2+ and several Mn-bearing oxide and oxyhydroxide minerals containing Mn in the +II, +III, and +IV oxidation states as a function of temperature (0-100°C) and pH (1-13). In addition, we also calculated the energetic potential of Mn2+ oxidation coupled to O2, NO2 -, NO3 -, and FeOOH. Results show that these reactions-none of which, except O2 + Mn2+, are known catabolisms-can provide energy to microorganisms, particularly at higher pH values and temperatures. Comproportionation between Mn2+ and pyrolusite, for example, can yield 10 s of kJ (mol Mn)-1. Disproportionation of Mn3+ can yield more than 100 kJ (mol Mn)-1 at conditions relevant to natural settings such as sediments, ferromanganese nodules and crusts, bioreactors and suboxic portions of the water column. Of the Mn2+ oxidation reactions, the one with nitrite as the electron acceptor is most energy yielding under most combinations of pH and temperature. We posit that several Mn redox reactions represent heretofore unknown microbial metabolisms.
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Affiliation(s)
- Douglas E LaRowe
- Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States
| | - Harold K Carlson
- Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States
| | - Jan P Amend
- Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States.,Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States
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16
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Yoshimura Y, Tani S, Fujiwara M, Nakamura M, Sumitani JI, Kawaguchi T. Biogenic manganese oxides combined with 1-hydroxybenzotriazol and an Mn(II)-oxidizing enzyme from Pleosporales sp. Mn1 oxidize 3,4-dimethoxytoluene to yield 3,4-dimethoxybenzaldehyde. J Biosci Bioeng 2021; 131:475-482. [PMID: 33495046 DOI: 10.1016/j.jbiosc.2020.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/24/2020] [Accepted: 12/25/2020] [Indexed: 12/16/2022]
Abstract
Using soil samples, we screened for microbes that produce biogenic manganese oxides (BMOs) and isolated Mn(II)-oxidizing fungus, namely Pleosporales sp. Mn1 (Mn1). We purified the Mn(II)-oxidizing enzyme from intracellular extracts of Mn1. The enzyme oxidized Mn(II) most effectively at pH 7.0 and 45 °C. The N-terminal amino acid sequence of the purified enzyme possessed homology with multicopper oxidases in fungi. The properties of the enzyme and the effects of the pH and inhibitors on the Mn(II)-oxidization activity suggested that the enzyme is a member of the multicopper oxidase family. The X-ray diffraction pattern of the BMOs produced by Mn1 showed a strong correlation with that of a typical poorly crystalized vernadite (δ-MnO2). Since BMOs are some of the most reactive materials in the environment, we investigated a potential new application of BMOs as oxidation catalysts. We confirmed that BMOs oxidized aromatic methyl groups when combined with the purified enzyme and a mediator, 1-hydroxybenzotriazole (HBT). BMO oxidation of 3,4-dimethoxytoluene achieved a better yield than that of abiotic MnO2 and white-rot fungus laccase under acidic and neutral pH conditions. Under neutral pH, the BMOs oxidized 3,4-dimethoxytoluene to yield 200-fold more 3,4-dimethoxybenzaldehyde than that of abiotic MnO2. This is the first report to reveal that BMOs combined with a Mn(II)-oxidizing enzyme and mediator can oxidize aromatic hydrocarbons to yield corresponding aldehydes.
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Affiliation(s)
- Yuko Yoshimura
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan; Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Wakayama 649-6261, Japan
| | - Shuji Tani
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
| | - Maki Fujiwara
- Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Wakayama 649-6261, Japan
| | - Makoto Nakamura
- Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Wakayama 649-6261, Japan
| | - Jun-Ichi Sumitani
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
| | - Takashi Kawaguchi
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan.
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17
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Abstract
Manganese is among Earth’s most abundant elements. Its oxidation had long been theorized1, yet undemonstrated2–4, to fuel chemolithoautotrophic microbial growth. Here, an enrichment culture exhibiting Mn(II)-oxidation-dependent, exponential growth was refined to a two species co-culture. Oxidation required viable bacteria at permissive temperatures, resulting in the generation of small Mn oxide nodules to which the cells associated. The majority member of the culture, ‘Candidatus Manganitrophus noduliformans’, affiliates within phylum Nitrospirae (Nitrospirota) but is distantly related to known Nitrospira and Leptospirillum species. The minority member has been isolated, but does not oxidise Mn(II) alone. Stable isotope probing revealed Mn(II)-oxidation-dependent, 13CO2-fixation into cellular biomass. Transcriptomics reveals candidate pathways for coupling extracellular manganese oxidation to aerobic energy conservation and to autotrophic CO2-fixation. These findings expand the known diversity of inorganic metabolisms supporting life, while completing a biogeochemical energy cycle for manganese5,6, one that may interface with other major global elemental cycles.
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18
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Soldatova AV, Balakrishnan G, Oyerinde OF, Romano CA, Tebo BM, Spiro TG. Biogenic and Synthetic MnO 2 Nanoparticles: Size and Growth Probed with Absorption and Raman Spectroscopies and Dynamic Light Scattering. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4185-4197. [PMID: 30905145 DOI: 10.1021/acs.est.8b05806] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
MnO2 nanoparticles, similar to those found in soils and sediments, have been characterized via their UV-visible and Raman spectra, combined with dynamic light scattering and reactivity measurements. Synthetic colloids were prepared by thiosulfate reduction of permanganate, their sizes controlled with adsorbates acting as capping agents: bicarbonate, phosphate, and pyrophosphate. Biogenic colloids, products of the manganese oxidase, Mnx, were similarly characterized. The band-gap energies of the colloids were found to increase with decreasing hydrodynamic diameter, Dh, and were proportional to 1/ Dh2, as predicted from quantum confinement theory. The intensity ratio of the two prominent Mn-O stretching Raman bands also varied with particle size, consistent with the ratio of edge to bulk Mn atoms. Reactivity of the synthetic colloids toward reduction by Mn2+, in the presence of pyrophosphate to trap the Mn3+ product, was proportional to the surface to volume ratio, but showed surprising complexity. There was also a remnant unreactive fraction, likely attributable to Mn(III)-induced surface passivation. The band gap was similar for biogenic and synthetic colloids of similar size, but decreased when the enzyme solution contained pyrophosphate, which traps the intermediate Mn(III) and slows MnO2 growth. The band gap/size correlation was used to analyze the growth of the enzymatically produced MnO2 oxides.
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Affiliation(s)
- Alexandra V Soldatova
- Department of Chemistry , University of Washington , Box 351700, Seattle , Washington 98195 , United States
| | - Gurusamy Balakrishnan
- Department of Chemistry , University of Washington , Box 351700, Seattle , Washington 98195 , United States
| | - Oyeyemi F Oyerinde
- Department of Chemistry , University of Washington , Box 351700, Seattle , Washington 98195 , United States
| | - Christine A Romano
- Division of Environmental and Biomolecular Systems , Oregon Health & Science University , Portland , Oregon 97239 , United States
| | - Bradley M Tebo
- Division of Environmental and Biomolecular Systems , Oregon Health & Science University , Portland , Oregon 97239 , United States
| | - Thomas G Spiro
- Department of Chemistry , University of Washington , Box 351700, Seattle , Washington 98195 , United States
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Jiang B, Gong Y, Gao J, Sun T, Liu Y, Oturan N, Oturan MA. The reduction of Cr(VI) to Cr(III) mediated by environmentally relevant carboxylic acids: State-of-the-art and perspectives. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:205-226. [PMID: 30445352 DOI: 10.1016/j.jhazmat.2018.10.070] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 10/21/2018] [Accepted: 10/22/2018] [Indexed: 06/09/2023]
Abstract
The detoxification process mediated by carboxylic acids (CAs) has received considerable spotlights since CAs are clean reagent and ubiquitous in the natural environments and effluents. Here, we present an exhaustive review on surface-bound/dissolved metals-catalyzed Cr(VI) reduction by CAs and CAs-mediated Cr(VI) reduction by many highly/poorly reductive reagents. The overall mechanisms of Cr(VI) reduction are mainly associated with the coordination of CAs with surface-bound/dissolved metals or Cr(VI,V,IV) species and the electron donating abilities of CAs. Additionally, the general decays of intermediate Cr(V,IV) complexes are clearly emerged in the Cr(VI) reduction processes. The performance of various reaction systems for Cr(VI) reduction that is greatly dependent on the operation parameters, including solution pH, reagent concentration, temperature, coexisting ions and gas atmosphere, are also critically commented. From the study survey presented herein, CAs-mediated Cr(VI) reduction processes exhibit good potential for remediation of various Cr(VI)-contaminated waters/sites. However, there is still a need to address the remained bottle-necks and challenges for the remediation of Cr(VI) mediated by CAs in the related natural attenuation cases and the treatment of industrial effluents. Overall, the present review offers the comprehensive understanding of the Cr(VI) reduction mediated by CAs and provide the engineering community with the guidelines for Cr(VI) remediation in the real-world applications.
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Affiliation(s)
- Bo Jiang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China; Laboratoire Géomatériaux et Environnement, EA 4508, 5 Bd Descartes, Université Paris-Est, 77454 Marne-la-Vallée, Cedex 2, France.
| | - Yifan Gong
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Jianan Gao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Tong Sun
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Yijie Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Nihal Oturan
- Laboratoire Géomatériaux et Environnement, EA 4508, 5 Bd Descartes, Université Paris-Est, 77454 Marne-la-Vallée, Cedex 2, France
| | - Mehmet A Oturan
- Laboratoire Géomatériaux et Environnement, EA 4508, 5 Bd Descartes, Université Paris-Est, 77454 Marne-la-Vallée, Cedex 2, France
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Neculita CM, Rosa E. A review of the implications and challenges of manganese removal from mine drainage. CHEMOSPHERE 2019; 214:491-510. [PMID: 30278403 DOI: 10.1016/j.chemosphere.2018.09.106] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/14/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
Manganese (Mn) is the third most abundant transition metal in the Earth's crust. Decades of increasing worldwide mining activities have inevitably led to the release of large amounts of this metal into the environment. Mine drainage, either acidic or neutral, often contains high levels of Mn, which have potentially detrimental effects on ecosystems and receiving water bodies. This review provides a comprehensive assessment of the main implications and challenges of Mn treatment in mine drainage. With this aim, the beneficial and adverse effects of Mn on ecosystems and human health are presented first. A comparison of background and mine effluents Mn contents is also provided, further stressing the need for Mn removal from mine drainage. Several technical options to address Mn contamination in acid and neutral mine drainage, and the challenges associated with Mn removal, are subsequently discussed. Thus, this paper presents up-to-date knowledge on the available physicochemical and biological processes deemed operative in Mn removal during mine drainage treatment and their limitations considering the distinctive behavior of Mn. The discussion is further extended to passive treatment systems, which are the most commonly implemented systems for mine drainage treatment on abandoned or closed mine sites, and highlights both their design criteria and operation requirements, as well as the factors that influence Mn removal efficiency. Finally, new perspectives on future research and development needs are identified to address the challenges in Mn removal during mine drainage treatment.
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Affiliation(s)
- Carmen Mihaela Neculita
- Research Institute on Mines and Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC, Canada.
| | - Eric Rosa
- Research Institute on Mines and Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC, Canada; Groupe de Recherche sur l'Eau Souterraine (GRES - Groundwater Research Group), UQAT, Amos, QC, Canada
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22
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Zheng Y, Li Y, Long H, Zhao X, Jia K, Li J, Wang L, Wang R, Lu X, Zhang D. bifA Regulates Biofilm Development of Pseudomonas putida MnB1 as a Primary Response to H 2O 2 and Mn 2. Front Microbiol 2018; 9:1490. [PMID: 30042743 PMCID: PMC6048274 DOI: 10.3389/fmicb.2018.01490] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/15/2018] [Indexed: 12/15/2022] Open
Abstract
Pseudomonas putida (P. putida) MnB1 is a widely used model strain in environment science and technology for determining microbial manganese oxidation. Numerous studies have demonstrated that the growth and metabolism of P. putida MnB1 are influenced by various environmental factors. In this study, we investigated the effects of hydrogen peroxide (H2O2) and manganese (Mn2+) on proliferation, Mn2+ acquisition, anti-oxidative system, and biofilm formation of P. putida MnB1. The related orthologs of 4 genes, mco, mntABC, sod, and bifA, were amplified from P. putida GB1 and their involvement were assayed, respectively. We found that P. putida MnB1 degraded H2O2, and quickly recovered for proliferation, but its intracellular oxidative stress state was maintained, with rapid biofilm formation after H2O2 depletion. The data from mco, mntABC, sod and bifA expression levels by qRT-PCR, elucidated a sensitivity toward bifA-mediated biofilm formation, in contrary to intracellular anti-oxidative system under H2O2 exposure. Meanwhile, Mn2+ ion supply inhibited biofilm formation of P. putida MnB1. The expression pattern of these genes showed that Mn2+ ion supply likely functioned to modulate biofilm formation rather than only acting as nutrient substrate for P. putida MnB1. Furthermore, blockade of BifA activity by GTP increased the formation and development of biofilms during H2O2 exposure, while converse response to Mn2+ ion supply was evident. These distinct cellular responses to H2O2 and Mn2+ provide insights on the common mechanism by which environmental microorganisms may be protected from exogenous factors. We postulate that BifA-mediated biofilm formation but not intracellular anti-oxidative system may be a primary protective strategy adopted by P. putida MnB1. These findings will highlight the understanding of microbial adaptation mechanisms to distinct environmental stresses.
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Affiliation(s)
- Yanjing Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Yumei Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Hongyan Long
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xiaojuan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Keke Jia
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Juan Li
- State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
| | - Leyong Wang
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing, China
| | - Ruiyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xiancai Lu
- State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
| | - Dongmei Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
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Barboza NR, Morais MMCA, Queiroz PS, Amorim SS, Guerra-Sá R, Leão VA. High Manganese Tolerance and Biooxidation Ability of Serratia marcescens Isolated from Manganese Mine Water in Minas Gerais, Brazil. Front Microbiol 2017; 8:1946. [PMID: 29062307 PMCID: PMC5640716 DOI: 10.3389/fmicb.2017.01946] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/22/2017] [Indexed: 11/23/2022] Open
Abstract
Manganese is an important metal for the maintenance of several biological functions, but it can be toxic in high concentrations. One of the main forms of human exposure to metals, such as manganese (Mn), is the consumption of solar salt contaminated. Mn-tolerant bacteria could be used to decrease the concentration of this metal from contaminated sites through safer environmental-friendly alternative technology in the future. Therefore, this study was undertaken to isolate and identify Mn resistant bacteria from water samples collected from a Mn mine in the Iron Quadrangle region (Minas Gerais, Brazil). Two bacterial isolates were identified as Serratia marcescens based on morphological, biochemical, 16S rDNA gene sequencing and phylogeny analysis. Maximum resistance of the selected isolates against increasing concentrations of Mn(II), up to 1200 mg L-1 was determined in solid media. A batch assay was developed to analyze and quantify the Mn removal capacities of the isolates. Biological Mn removal capacities of over 55% were detected for both isolates. Whereas that mechanism like biosorption, precipitation and oxidation could be explaining the Mn removal, we seek to give an insight into some of the molecular mechanisms adopted by S. marcescens isolates. For this purpose, the following approaches were adopted: leucoberbelin blue I assay, Mn(II) oxidation by cell-free filtrate and electron microscopy and energy-dispersive X-ray spectroscopy analyses. Overall, these results indicate that S. marcescens promotes Mn removal in an indirect mechanism by the formation of Mn oxides precipitates around the cells, which should be further explored for potential biotechnological applications for water recycling both in hydrometallurgical and mineral processing operations.
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Affiliation(s)
- Natália R Barboza
- Laboratório de Bioquímica e Biologia Molecular, Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológica (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | | | - Pollyana S Queiroz
- Laboratório de Bioquímica e Biologia Molecular, Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológica (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Soraya S Amorim
- Laboratório de Bioquímica e Biologia Molecular, Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológica (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Renata Guerra-Sá
- Laboratório de Bioquímica e Biologia Molecular, Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológica (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Versiane A Leão
- Laboratório de Bio&Hidrometalurgia, Departamento de Engenharia Metalúrgica e de Materiais, Escola de Minas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
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Soldatova AV, Tao L, Romano CA, Stich TA, Casey WH, Britt RD, Tebo BM, Spiro TG. Mn(II) Oxidation by the Multicopper Oxidase Complex Mnx: A Binuclear Activation Mechanism. J Am Chem Soc 2017; 139:11369-11380. [PMID: 28712284 DOI: 10.1021/jacs.7b02771] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The bacterial protein complex Mnx contains a multicopper oxidase (MCO) MnxG that, unusually, catalyzes the two-electron oxidation of Mn(II) to MnO2 biomineral, via a Mn(III) intermediate. Although Mn(III)/Mn(II) and Mn(IV)/Mn(III) reduction potentials are expected to be high, we find a low reduction potential, 0.38 V (vs Normal Hydrogen Electrode, pH 7.8), for the MnxG type 1 Cu2+, the electron acceptor. Indeed the type 1 Cu2+ is not reduced by Mn(II) in the absence of molecular oxygen, indicating that substrate oxidation requires an activation step. We have investigated the enzyme mechanism via electronic absorption spectroscopy, using chemometric analysis to separate enzyme-catalyzed MnO2 formation from MnO2 nanoparticle aging. The nanoparticle aging time course is characteristic of nucleation and particle growth; rates for these processes followed expected dependencies on Mn(II) concentration and temperature, but exhibited different pH optima. The enzymatic time course is sigmoidal, signaling an activation step, prior to turnover. The Mn(II) concentration and pH dependence of a preceding lag phase indicates weak Mn(II) binding. The activation step is enabled by a pKa > 8.6 deprotonation, which is assigned to Mn(II)-bound H2O; it induces a conformation change (consistent with a high activation energy, 106 kJ/mol) that increases Mn(II) affinity. Mnx activation is proposed to decrease the Mn(III/II) reduction potential below that of type 1 Cu(II/I) by formation of a hydroxide-bridged binuclear complex, Mn(II)(μ-OH)Mn(II), at the substrate site. Turnover is found to depend cooperatively on two Mn(II) and is enabled by a pKa 7.6 double deprotonation. It is proposed that turnover produces a Mn(III)(μ-OH)2Mn(III) intermediate that proceeds to the enzyme product, likely Mn(IV)(μ-O)2Mn(IV) or an oligomer, which subsequently nucleates MnO2 nanoparticles. We conclude that Mnx exploits manganese polynuclear chemistry in order to facilitate an otherwise difficult oxidation reaction, as well as biomineralization. The mechanism of the Mn(III/IV) conversion step is elucidated in an accompanying paper .
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Affiliation(s)
- Alexandra V Soldatova
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | | | - Christine A Romano
- Division of Environmental and Biomolecular Systems, Institute of Environmental Health, Oregon Health & Science University , Portland, Oregon 97239, United States
| | | | | | | | - Bradley M Tebo
- Division of Environmental and Biomolecular Systems, Institute of Environmental Health, Oregon Health & Science University , Portland, Oregon 97239, United States
| | - Thomas G Spiro
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
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25
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Bhushan B, Nayak A, Kamaluddin. Catalytic Role of Manganese Oxides in Prebiotic Nucleobases Synthesis from Formamide. ORIGINS LIFE EVOL B 2016; 46:203-13. [PMID: 26758444 DOI: 10.1007/s11084-015-9480-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/16/2015] [Indexed: 10/22/2022]
Abstract
Origin of life processes might have begun with the formation of important biomonomers, such as amino acids and nucleotides, from simple molecules present in the prebiotic environment and their subsequent condensation to biopolymers. While studying the prebiotic synthesis of naturally occurring purine and pyrimidine derivatives from formamide, the manganese oxides demonstrated not only good binding for formamide but demonstrated novel catalytic activity. A novel one pot manganese oxide catalyzed synthesis of pyrimidine nucleobases like thymine is reported along with the formation of other nucleobases like purine, 9-(hydroxyacetyl) purine, cytosine, 4(3 H)-pyrimidinone and adenine in acceptable amounts. The work reported is significant in the sense that the synthesis of thymine has exhibited difficulties especially under one pot conditions and also such has been reported only under the catalytic activity of TiO2. The lower oxides of manganese were reported to show higher potential as catalysts and their existence were favored by the reducing atmospheric conditions prevalent on early Earth; thereby confirming the hypothesis that mineral having metals in reduced form might have been more active during the course of chemical evolution. Our results further confirm the role of formamide as a probable precursor for the formation of purine and pyrimidine bases during the course of chemical evolution and origin of life.
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Affiliation(s)
- Brij Bhushan
- Department of Agrifood Engineering and Biotecnology, Universitat Politècnica de Catalunya (UPC), 08860, Barcelona, Castelldefels, Spain.
| | - Arunima Nayak
- Energy and Environment Department, Innovació i Recerca Industrial i Sostenible, -08860, Castelldefels, Spain
| | - Kamaluddin
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667(U.K.), India
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26
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Characterization of bacterial diversity associated with deep sea ferromanganese nodules from the South China Sea. J Microbiol 2015; 53:598-605. [DOI: 10.1007/s12275-015-5217-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 06/24/2015] [Accepted: 07/09/2015] [Indexed: 10/23/2022]
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Bohu T, Santelli CM, Akob DM, Neu TR, Ciobota V, Rösch P, Popp J, Nietzsche S, Küsel K. Characterization of pH dependent Mn(II) oxidation strategies and formation of a bixbyite-like phase by Mesorhizobium australicum T-G1. Front Microbiol 2015; 6:734. [PMID: 26236307 PMCID: PMC4505141 DOI: 10.3389/fmicb.2015.00734] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 07/03/2015] [Indexed: 01/09/2023] Open
Abstract
Despite the ubiquity of Mn oxides in natural environments, there are only a few observations of biological Mn(II) oxidation at pH < 6. The lack of low pH Mn-oxidizing bacteria (MOB) isolates limits our understanding of how pH influences biological Mn(II) oxidation in extreme environments. Here, we report that a novel MOB isolate, Mesorhizobium australicum strain T-G1, isolated from an acidic and metalliferous uranium mining area, can oxidize Mn(II) at both acidic and neutral pH using different enzymatic pathways. X-ray diffraction, Raman spectroscopy, and scanning electron microscopy with energy dispersive X-ray spectroscopy revealed that T-G1 initiated bixbyite-like Mn oxide formation at pH 5.5 which coincided with multi-copper oxidase expression from early exponential phase to late stationary phase. In contrast, reactive oxygen species (ROS), particularly superoxide, appeared to be more important for T-G1 mediated Mn(II) oxidation at neutral pH. ROS was produced in parallel with the occurrence of Mn(II) oxidation at pH 7.2 from early stationary phase. Solid phase Mn oxides did not precipitate, which is consistent with the presence of a high amount of H2O2 and lower activity of catalase in the liquid culture at pH 7.2. Our results show that M. australicum T-G1, an acid tolerant MOB, can initiate Mn(II) oxidation by varying its oxidation mechanisms depending on the pH and may play an important role in low pH manganese biogeochemical cycling.
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Affiliation(s)
- Tsing Bohu
- Department of Aquatic Geomicrobiology, Friedrich Schiller University JenaJena, Germany
| | - Cara M. Santelli
- Department of Mineral Sciences, Smithsonian InstitutionWashington, DC, USA
| | - Denise M. Akob
- National Research Program, United States Geological SurveyReston, VA, USA
| | - Thomas R. Neu
- Department of River Ecology, Helmholtz Centre for Environmental Research-UFZMagdeburg, Germany
| | - Valerian Ciobota
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University JenaJena, Germany
| | - Petra Rösch
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University JenaJena, Germany
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University JenaJena, Germany
- Leibniz Institute of Photonic TechnologiesJena, Germany
| | - Sándor Nietzsche
- Centre of Electron Microscopy, University Hospital Jena, Friedrich Schiller University JenaJena, Germany
| | - Kirsten Küsel
- Department of Aquatic Geomicrobiology, Friedrich Schiller University JenaJena, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-LeipzigLeipzig, Germany
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28
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Andeer PF, Learman DR, McIlvin M, Dunn JA, Hansel CM. Extracellular haem peroxidases mediate Mn(II) oxidation in a marine Roseobacter bacterium via superoxide production. Environ Microbiol 2015; 17:3925-36. [PMID: 25923595 DOI: 10.1111/1462-2920.12893] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 04/24/2015] [Accepted: 04/25/2015] [Indexed: 12/20/2022]
Abstract
Manganese (Mn) oxides are among the strongest sorbents and oxidants in environmental systems. A number of biotic and abiotic pathways induce the oxidation of Mn(II) to Mn oxides. Here, we use a combination of proteomic analyses and activity assays, to identify the enzyme(s) responsible for extracellular superoxide-mediated Mn oxide formation by a bacterium within the ubiquitous Roseobacter clade. We show that animal haem peroxidases (AHPs) located on the outer membrane and within the secretome are responsible for Mn(II) oxidation. These novel peroxidases have previously been implicated in direct Mn(II) oxidation by phylogenetically diverse bacteria. Yet, we show that in this Roseobacter species, AHPs mediate Mn(II) oxidation not through a direct reaction but by producing superoxide and likely also by degrading hydrogen peroxide. These findings point to a eukaryotic-like oscillatory oxidative-peroxidative enzymatic cycle by these AHPs that leads to Mn oxide formation by this organism. AHP expression appears unaffected by Mn(II), yet the large energetic investment required to produce and secrete these enzymes points to an as yet unknown physiological function. These findings are further evidence that bacterial peroxidases and secreted enzymes, in general, are unappreciated controls on the cycling of metals and reactive oxygen species (ROS), and by extension carbon, in natural systems.
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Affiliation(s)
- Peter F Andeer
- Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, 266 Woods Hole Rd MS# 52, Woods Hole, MA, 02543, USA
| | - Deric R Learman
- Department of Biology, Earth and Atmospheric Science, 190 Brooks Hall, Mt. Pleasant, MI, 48859, USA
| | - Matt McIlvin
- Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, 266 Woods Hole Rd MS# 52, Woods Hole, MA, 02543, USA
| | - James A Dunn
- Department of Biology, Earth and Atmospheric Science, 190 Brooks Hall, Mt. Pleasant, MI, 48859, USA
| | - Colleen M Hansel
- Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, 266 Woods Hole Rd MS# 52, Woods Hole, MA, 02543, USA
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29
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Guo L, Cutright TJ. Remediation of AMD Contaminated Soil by Two Types of Reeds. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2015; 17:391-403. [PMID: 25409253 DOI: 10.1080/15226514.2014.910170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Acid mine drainage (AMD) adversely impacts many regions in the world. The interactions among citric acid (CA), rhizosphere bacteria and metal uptake in different types of Phragmites australis cultured in spiked AMD contaminated soil were investigated. Compared with non-contaminated reeds cultured under the same conditions, wild reeds harvested from a contaminated site accumulated more metals into tissues. Rhizosphere iron oxidizing bacteria (Fe(II)OB) enhanced the development of Fe plaque but had no significant impact on the formation of Mn and Al plaque on the root surface of either reeds. Plaque may restrain the accumulation of Fe and Mn into tissues of reeds. CA inhibited the growth of Fe(II)OB, reduced the formation of metal plaque and significantly elevated metal accumulations into both underground and aboveground biomass of reeds. The concentrations of Fe, Al and Mn were higher in belowground organs than aboveground tissues. The roots contained 0.28±0.01 mg/g Mn, 3.09±0.51 mg/g Al, 94.47±5.75 mg/g Fe, while the stems accumulated 0.19±0.01 mg/g Mn, 1.34±0.02 mg/g Al, 10.32±0.60 mg/g Fe in wild reeds cultured in soil added with 33,616 ppm CA. Further field investigations may be required to study the effect of CA to enhance phytoremediation of metals from real AMD contaminated sites.
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Affiliation(s)
- Lin Guo
- a Department of Civil Engineering , The University of Akron , Akron , Ohio , USA
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30
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Learman DR, Hansel CM. Comparative proteomics of Mn(II)-oxidizing and non-oxidizing Roseobacter clade bacteria reveal an operative manganese transport system but minimal Mn(II)-induced expression of manganese oxidation and antioxidant enzymes. ENVIRONMENTAL MICROBIOLOGY REPORTS 2014; 6:501-509. [PMID: 25646543 DOI: 10.1111/1758-2229.12164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Manganese (Mn) is an essential nutrient and precipitates as minerals with technological and environmental relevance. To gain a proteomic understanding of how bacteria respond to Mn(II) and its connection to oxidation, a comparative examination of the proteomic response of Mn(II)-oxidizing (Roseobacter sp. AzwK-3b) and non-oxidizing (Ruegeria sp. TM1040) alphaproteobacteria was conducted. Both bacteria show an operative Mn(II) transport system. In the absence of Mn(II), both bacteria have higher expression of proteins that were homologous to SitA and SitB, known proteins in the Mn(II) transport system of other alphaproteobacteria. Overall, each bacterium demonstrated a varied response to Mn(II). Ru. TM1040 had a greater number of proteins differentially expressed in response to Mn(II) and also had a group of proteins related to chemotaxis at higher concentrations of Mn(II), suggesting a potential stress response. While both bacteria are able to generate extracellular superoxide and Mn(II) is a known antioxidant, the presence of Mn(II) did not significantly alter the expression of proteins related to antioxidant activity. Heme peroxidases, previously connected to Mn(II) oxidation, were found in the soluble protein extract of R. AzwK-3b, but only minor differential expression was observed as a function of Mn(II), indicating that their expression was not induced by Mn(II).
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31
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Guo L, Cutright TJ. Remediation of acid mine drainage (AMD)-contaminated soil by Phragmites australis and rhizosphere bacteria. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:7350-7360. [PMID: 24573463 DOI: 10.1007/s11356-014-2642-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 02/10/2014] [Indexed: 06/03/2023]
Abstract
Experiments were conducted to assess the impact of citric acid (CA) and rhizosphere bacteria on metal uptake in Phragmites australis cultured in a spiked acid mine drainage (AMD) soil. Rhizosphere iron-oxidizing bacteria (Fe(II)OB) enhanced the formation of Fe plaque on roots, which decreased the uptake of Fe and Mn. CA inhibited the growth of Fe(II)OB, decreased the formation of metal plaque, raised the metal mobility in soil, and increased the accumulation of metals in all tissues of the reeds. The higher the CA dosage, the more metals accumulated into reeds. The total amount of metals in reeds increased from 7.8 ± 0.5 × 10(-6) mol plant(-1) (Mn), 1.4 ± 0.1 × 10(-3) mol plant(-1) (Fe), and 1.0 ± 0.1 × 10(-4) mol plant(-1) (Al) in spiked soil without CA to 22.2 ± 0.5 × 10(-6) mol plant(-1) (Mn), 3.5 ± 0.06 × 10(-3) mol plant(-1) (Fe), and 5.0 ± 0.2 × 10(-4) mol plant(-1) (Al) in soil added with 33.616 g C6H8O7·H2O for per kilogram soil. CA could be effective at enhancing the phytoremediation of metals from AMD-contaminated soil.
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Affiliation(s)
- Lin Guo
- Department of Civil Engineering Auburn Science and Engineering Center (ASEC) 210, University of Akron, Akron, OH, 44325-3905, USA
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Banh A, Chavez V, Doi J, Nguyen A, Hernandez S, Ha V, Jimenez P, Espinoza F, Johnson HA. Manganese (Mn) oxidation increases intracellular Mn in Pseudomonas putida GB-1. PLoS One 2013; 8:e77835. [PMID: 24147089 PMCID: PMC3798386 DOI: 10.1371/journal.pone.0077835] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 09/11/2013] [Indexed: 01/01/2023] Open
Abstract
Bacterial manganese (Mn) oxidation plays an important role in the global biogeochemical cycling of Mn and other compounds, and the diversity and prevalence of Mn oxidizers have been well established. Despite many hypotheses of why these bacteria may oxidize Mn, the physiological reasons remain elusive. Intracellular Mn levels were determined for Pseudomonas putida GB-1 grown in the presence or absence of Mn by inductively coupled plasma mass spectrometry (ICP-MS). Mn oxidizing wild type P. putida GB-1 had higher intracellular Mn than non Mn oxidizing mutants grown under the same conditions. P. putida GB-1 had a 5 fold increase in intracellular Mn compared to the non Mn oxidizing mutant P. putida GB-1-007 and a 59 fold increase in intracellular Mn compared to P. putida GB-1 ∆2665 ∆2447. The intracellular Mn is primarily associated with the less than 3 kDa fraction, suggesting it is not bound to protein. Protein oxidation levels in Mn oxidizing and non oxidizing cultures were relatively similar, yet Mn oxidation did increase survival of P. putida GB-1 when oxidatively stressed. This study is the first to link Mn oxidation to Mn homeostasis and oxidative stress protection.
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Affiliation(s)
- Andy Banh
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Valarie Chavez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Julia Doi
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Allison Nguyen
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Sophia Hernandez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Vu Ha
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Peter Jimenez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Fernanda Espinoza
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
| | - Hope A. Johnson
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, United States of America
- * E-mail:
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33
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Abstract
Micro-organisms capable of oxidizing the redox-active transition metal manganese play an important role in the biogeochemical cycle of manganese. In the present mini-review, we focus specifically on Mn(II)-oxidizing bacteria. The mechanisms by which bacteria oxidize Mn(II) include a two-electron oxidation reaction catalysed by a novel multicopper oxidase that produces Mn(IV) oxides as the primary product. Bacteria also produce organic ligands, such as siderophores, that bind to and stabilize Mn(III). The realization that this stabilized Mn(III) is present in many environments and can affect the redox cycles of other elements such as sulfur has made it clear that manganese and the bacteria that oxidize it profoundly affect the Earth's biogeochemistry.
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Interaction of Vent Biota and Hydrothermal Deposits: Present Evidence and Future Experimentation. ACTA ACUST UNITED AC 2013. [DOI: 10.1029/gm091p0178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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35
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Cui M, Jang M, Na S, Lee S, Khim J. Catalytic assistance of ultrasound for manganese removal by waste oyster shells. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2013; 115:235-240. [PMID: 23266479 DOI: 10.1016/j.jenvman.2012.10.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 09/25/2012] [Accepted: 10/25/2012] [Indexed: 06/01/2023]
Abstract
The catalytic assistance of ultrasound (designated as US) for the removal of Mn(II) by oyster shells (designated as OS) was investigated with respect to major parameters such as pH, initial Mn(II) concentration, and US power density. The kinetic data of Mn(II) removal by the combination of oyster shells and ultrasound (OS/US) was fitted by the first-order kinetic model. Results show that the rate constant of the OS/US system was in the range 3.1-54.5 × 10(-2) min(-1), which is about 130 times higher than that of the homogeneous oxidation of Mn(II) by O(2), and was about two times higher than that of commercial surrogate materials (CaO and CaCO(3)) associated with US under the same operational condition. The US power densities for the OS/US system and the log-scale of the first-order rate constants showed a linear positive correlation with a slope of 0.042. X-ray diffraction, and Fourier transform infrared analyses revealed that the dissolved Mn(II) was oxidized into Mn(2)O(3) or MnO(2), as well as precipitated in the form of MnCO(3) by OS/US.
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Affiliation(s)
- Mingcan Cui
- School of Civil Environmental and Architecture Engineering, Korea University, 5 Anam-dong, Seoul 136-701, Republic of Korea
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Toyoda K, Tebo BM. The effect of Ca 2+ ions and ionic strength on Mn(II) oxidation by spores of the marine Bacillus sp. SG-1. GEOCHIMICA ET COSMOCHIMICA ACTA 2013; 101:1-11. [PMID: 29176910 PMCID: PMC5701786 DOI: 10.1016/j.gca.2012.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Manganese(IV) oxides, believed to form primarily through microbial activities, are extremely important mineral phases in marine environments where they scavenge a variety of trace elements and thereby control their distributions. The presence of various ions common in seawater are known to influence Mn oxide mineralogy yet little is known about the effect of these ions on the kinetics of bacterial Mn(II) oxidation and Mn oxide formation. We examined factors affecting bacterial Mn(II) oxidation by spores of the marine Bacillus sp. strain SG-1 in natural and artificial seawater of varying ionic conditions. Ca2+ concentration dramatically affected Mn(II) oxidation, while Mg2+, Sr2+, K+, Na+ and NO3- ions had no effect. The rate of Mn(II) oxidation at 10mM Ca2+ (seawater composition) was four or five times that without Ca2+. The relationship between Ca2+ content and oxidation rate demonstrates that the equilibrium constant is small (on the order of 0.1) and the binding coefficient is 0.5. The pH optimum for Mn(II) oxidation changed depending on the amount of Ca2+ present, suggesting that Ca2+ exerts a direct effect on the enzyme perhaps as a stabilizing bridge between polypeptide components. We also examined the effect of varying concentrations of NaCl or KNO3 (0 mM - 2000 mM) on the kinetics of Mn(II) oxidation in solutions containing 10 mM Ca2+. Mn(II) oxidation was unaffected by changes in ionic strength (I) below 0.2, but it was inhibited by increasing salt concentrations above this value. Our results suggest that the critical coagulation concentration is around 200 mM of salt (I = ca. 0.2), and that the ionic strength of seawater (I > 0.2) accelerates the precipitation of Mn oxides around the spores. Under these conditions, the aggregation of Mn oxides reduces the supply of dissolved O2 and/or Mn2+ and inhibits the Mn(II) -> Mn(III) step controlling the enzymatic oxidation of Mn(II). Our results suggest that the hardness and ionic strength of the aquatic environment at circumneutral pH strongly influences the rate of biologically mediated Mn(II) oxidation.
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Affiliation(s)
- Kazuhiro Toyoda
- Graduate School of Environmental Science, Hokkaido University, Kita-ku, Sapporo, 060-0810 Japan
| | - Bradley M Tebo
- Division of Environmental & Biomolecular Systems, Institute of Environmental Health, Oregon Health & Science University, 20000 NW Walker Rd. Beaverton, OR 97006
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Xu J, Campbell JM, Zhang N, Hickey WJ, Sahai N. Did mineral surface chemistry and toxicity contribute to evolution of microbial extracellular polymeric substances? ASTROBIOLOGY 2012; 12:785-798. [PMID: 22934560 PMCID: PMC4361159 DOI: 10.1089/ast.2011.0776] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Modern ecological niches are teeming with an astonishing diversity of microbial life in biofilms closely associated with mineral surfaces, which highlights the remarkable success of microorganisms in conquering the challenges and capitalizing on the benefits presented by the mineral-water interface. Biofilm formation capability likely evolved on early Earth because biofilms provide crucial cell survival functions. The potential toxicity of mineral surfaces toward cells and the complexities of the mineral-water-cell interface in determining the toxicity mechanisms, however, have not been fully appreciated. Here, we report a previously unrecognized role for extracellular polymeric substances (EPS), which form biofilms in shielding cells against the toxicity of mineral surfaces. Using colony plating and LIVE/DEAD staining methods in oxide suspensions versus oxide-free controls, we found greater viability of wild-type, EPS-producing strains of Pseudomonas aeruginosa PAO1 compared to their isogenic knockout mutant with defective biofilm-producing capacity. Oxide toxicity was specific to its surface charge and particle size. High resolution transmission electron microscopy (HRTEM) images and assays for highly reactive oxygen species (hROS) on mineral surfaces suggested that EPS shield via both physical and chemical mechanisms. Intriguingly, qualitative as well as quantitative measures of EPS production showed that toxic minerals induced EPS production in bacteria. By determining the specific toxicity mechanisms, we provide insight into the potential impact of mineral surfaces in promoting increased complexity of cell surfaces, including EPS and biofilm formation, on early Earth.
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Affiliation(s)
- Jie Xu
- Department of Geoscience and NASA Astrobiology Institute, University of Wisconsin, Madison, Wisconsin
- Department of Chemistry, George Washington University, Washington, DC
| | - Jay M. Campbell
- Department of Biochemistry, University of Wisconsin, Madison, Wisconsin
| | - Nianli Zhang
- Materials Science Program, University of Wisconsin, Madison, Wisconsin
- Department of Biologic and Materials Science, School of Dentistry, University of Michigan, Ann Arbor, Michigan
| | - William J. Hickey
- Department of Soil Science, University of Wisconsin, Madison, Wisconsin
| | - Nita Sahai
- Department of Geoscience and NASA Astrobiology Institute, University of Wisconsin, Madison, Wisconsin
- Materials Science Program, University of Wisconsin, Madison, Wisconsin
- Environmental Chemistry and Technology Program, University of Wisconsin, Madison, Wisconsin
- Department of Polymer Science and NASA Astrobiology Institute, University of Akron, Akron, Ohio
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Bryant LD, Little JC, Bürgmann H. Response of sediment microbial community structure in a freshwater reservoir to manipulations in oxygen availability. FEMS Microbiol Ecol 2012; 80:248-63. [DOI: 10.1111/j.1574-6941.2011.01290.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 12/11/2011] [Accepted: 12/19/2011] [Indexed: 11/30/2022] Open
Affiliation(s)
- Lee D. Bryant
- Department of Civil and Environmental Engineering; Virginia Tech; Blacksburg; VA; USA
| | - John C. Little
- Department of Civil and Environmental Engineering; Virginia Tech; Blacksburg; VA; USA
| | - Helmut Bürgmann
- Department of Surface Waters - Research and Management; Eawag: Swiss Federal Institute of Aquatic Science and Technology; Kastanienbaum; Switzerland
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Bryant LD, Hsu-Kim H, Gantzer PA, Little JC. Solving the problem at the source: Controlling Mn release at the sediment-water interface via hypolimnetic oxygenation. WATER RESEARCH 2011; 45:6381-6392. [PMID: 22000717 DOI: 10.1016/j.watres.2011.09.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 09/11/2011] [Accepted: 09/13/2011] [Indexed: 05/31/2023]
Abstract
One of the primary goals of hypolimnetic oxygenation systems (HOx) from a drinking water perspective is to suppress sediment-water fluxes of reduced chemical species (e.g., manganese and iron) by replenishing dissolved oxygen (O(2)) in the hypolimnion. Manganese (Mn) in particular is becoming a serious problem for water treatment on a global scale. While it has been established that HOx can increase sediment O(2) uptake rates and subsequently enhance the sediment oxic zone via elevated near-sediment O(2) and mixing, the influence of HOx on sediment-water fluxes of chemical species with more complicated redox kinetics like Mn has not been comprehensively evaluated. This study was based on Mn and O(2) data collected primarily in-situ to characterize both the sediment and water column in a drinking-water-supply reservoir equipped with an HOx. While diffusive Mn flux out of the sediment was enhanced by HOx operation due to an increased concentration driving force across the sediment-water interface, oxygenation maintained elevated near-sediment and porewater O(2) levels that facilitated biogeochemical cycling and subsequent retention of released Mn within the benthic region. Results show that soluble Mn levels in the lower hypolimnion increased substantially when the HOx was turned off for as little as ∼48 h and the upper sediment became anoxic. Turning off the HOx for longer periods (i.e., several weeks) significantly impaired water quality due to sediment Mn release. Continual oxygenation maintained an oxic benthic region sufficient to prevent Mn release to the overlying source water.
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Affiliation(s)
- Lee D Bryant
- Department of Civil and Environmental Engineering, 418 Durham Hall, Virginia Tech, Blacksburg, VA 24061, USA.
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40
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Bhushan B, Shanker U, Kamaluddin. Adsorption of ribose nucleotides on manganese oxides with varied mn/o ratio: implications for chemical evolution. ORIGINS LIFE EVOL B 2011; 41:469-82. [PMID: 21626404 DOI: 10.1007/s11084-011-9241-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 05/20/2011] [Indexed: 10/18/2022]
Abstract
Manganese exists in different oxidation states under different environmental conditions with respect to redox potential. Various forms of manganese oxides, namely, Manganosite (MnO), Bixbyite (Mn(2)O(3)), Hausmannite (Mn(3)O(4)) and Pyrolusite (MnO(2)) were synthesized and their possible role in chemical evolution studied. Adsorption studies of ribose nucleotides (5'-AMP, 5'-GMP, 5'-CMP and 5'-UMP) on these manganese oxides at neutral pH, revealed a higher binding affinity to manganosite (MnO) compared to the other manganese oxides. That manganese oxides having a lower Mn-O ratio show higher binding affinity for the ribonucleotides indirectly implies that such oxides may have provided a surface onto which biomonomers could have been concentrated through selective adsorption. Purine nucleotides were adsorbed to a greater extent compared to the pyrimidine nucleotides. Adsorption data followed Langmuir adsorption isotherms, and X( m ) and K( L ) values were calculated. The nature of the interaction and mechanism was elucidated by infrared spectral studies conducted on the metal-oxide and ribonucleotide-metal-oxide adducts.
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Affiliation(s)
- Brij Bhushan
- Department of Chemistry, Indian Institute of Technology Roorkee, UK, India
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41
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Lee JH, Kennedy DW, Dohnalkova A, Moore DA, Nachimuthu P, Reed SB, Fredrickson JK. Manganese sulfide formation via concomitant microbial manganese oxide and thiosulfate reduction. Environ Microbiol 2011; 13:3275-88. [PMID: 21951417 DOI: 10.1111/j.1462-2920.2011.02587.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The dissimilatory metal-reducing bacterium, Shewanella oneidensis MR-1 produced γ-MnS (rambergite) nanoparticles during the concurrent reduction of MnO₂ and thiosulfate coupled to H₂ oxidation. To investigate effect of direct microbial reduction of MnO₂ on MnS formation, two MR-1 mutants defective in outer membrane c-type cytochromes (ΔmtrC/ΔomcA and ΔmtrC/ΔomcA/ΔmtrF) were also used and it was determined that direct reduction of MnO₂ was dominant relative to chemical reduction by biogenic sulfide generated from thiosulfate reduction. Although bicarbonate was excluded from the medium, incubations of strain MR-1 with lactate as the electron donor produced MnCO₃ (rhodochrosite) as well as MnS in nearly equivalent amounts as estimated by micro X-ray diffraction (micro-XRD) analysis. It was concluded that carbonate released from lactate metabolism promoted MnCO₃ formation and that Mn(II) mineralogy was strongly affected by carbonate ions even in the presence of abundant sulfide and weakly alkaline conditions expected to favour the precipitation of MnS. Formation of MnS, as determined by a combination of micro-XRD, transmission electron microscopy, energy dispersive X-ray spectroscopy, and selected area electron diffraction analyses was consistent with equilibrium speciation modelling predictions. Biogenic manganese sulfide may be a manganese sink in the Mn biogeochemical cycle in select environments such as deep anoxic marine basins within the Baltic Sea.
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Affiliation(s)
- Ji-Hoon Lee
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
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42
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Anderson CR, Davis RE, Bandolin NS, Baptista AM, Tebo BM. Analysis of in situ manganese(II) oxidation in the Columbia River and offshore plume: linking Aurantimonas and the associated microbial community to an active biogeochemical cycle. Environ Microbiol 2011; 13:1561-76. [PMID: 21418498 DOI: 10.1111/j.1462-2920.2011.02462.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Columbia River is a major source of dissolved nutrients and trace metals for the west coast of North America. A large proportion of these nutrients are sourced from the Columbia River Estuary, where coastal and terrestrial waters mix and resuspend particulate matter within the water column. As estuarine water is discharged off the coast, it transports the particulate matter, dissolved nutrients and microorganisms forming nutrient-rich and metabolically dynamic plumes. In this study, bacterial manganese oxidation within the plume and estuary was investigated during spring and neap tides. The microbial community proteome was fractionated and assayed for Mn oxidation activity. Proteins from the outer membrane and the loosely bound outer membrane fractions were separated using size exclusion chromatography and Mn(II)-oxidizing eluates were analysed with tandem mass spectrometry to identify potential Mn oxidase protein targets. Multi-copper oxidase (MCO) and haem-peroxidase enzymes were identified in active fractions. T-RFLP profiles and cluster analysis indicates that organisms and bacterial communities capable of oxidizing Mn(II) can be sourced from the Columbia River estuary and nearshore coastal ocean. These organisms are producing up to 10 fM MnO₂ cell⁻¹ day⁻¹. Evidence for the presence of Mn(II)-oxidizing bacterial isolates from the genera Aurantimonas, Rhodobacter, Bacillus and Shewanella was found in T-RFLP profiles. Specific Q-PCR probes were designed to target potential homologues of the Aurantimonas manganese oxidizing peroxidase (Mop). By comparing total Mop homologues, Aurantimonas SSU rRNA and total bacterial SSU rRNA gene copies, it appears that Aurantimonas can only account for ~1.7% of the peroxidase genes quantified. Under the broad assumption that at least some of the peroxidase homologues quantified are involved in manganese oxidation, it is possible that other organisms oxidize manganese via peroxidases.
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Affiliation(s)
- C R Anderson
- Division of Environmental and Biomolecular Systems, Oregon Health & Science University, Beaverton, OR 97006, USA.
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43
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Manganese Oxidation by Bacteria: Biogeochemical Aspects. MOLECULAR BIOMINERALIZATION 2011; 52:49-76. [DOI: 10.1007/978-3-642-21230-7_3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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44
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Dittman EK, Buchwalter DB. Manganese bioconcentration in aquatic insects: Mn oxide coatings, molting loss, and Mn(II) thiol scavenging. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:9182-9188. [PMID: 21049994 DOI: 10.1021/es1022043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Streams below mountaintop removal-valley fill coal mining operations often have elevated Mn concentrations, but it remains unclear if Mn plays a role in biodiversity reduction. We examined various aspects of aqueous Mn interactions with aquatic insects exposed to environmentally relevant Mn concentrations, revealing complex behavior. First, Mn accumulation rates varied widely among 9 species. A significant percentage of total Mn accrued (mean 74%, range 24-95%) was associated with the cuticle, predominantly in the form of Mn-oxides, and to a lesser degree Mn(II). Mn II is also absorbed into tissues, possibly through calcium transporters. Increased ambient calcium concentrations decreased both adsorbed and absorbed Mn accumulation from solution. Though species showed similar Mn efflux rate constants (0.032-0.072 d(-1)), the primary mode of Mn loss was through molting. Both adsorbed and absorbed Mn is lost during the molt. Subcellular compartmentalization studies revealed an overwhelming tendency for internalized Mn to associate with the heat stable cytosolic protein fraction. After short dissolved Mn exposures, intracellular glutathione and cysteine levels were markedly reduced relative to controls. These findings suggest that Mn exposure results in transient physiological stress in aquatic insects which is likely relieved, in part, during the molting process.
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Affiliation(s)
- Elizabeth K Dittman
- Department of Environmental and Molecular Toxicology, North Carolina State University, Box 7633, Raleigh, North Carolina 27695, United States
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45
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Borch T, Kretzschmar R, Kappler A, Cappellen PV, Ginder-Vogel M, Voegelin A, Campbell K. Biogeochemical redox processes and their impact on contaminant dynamics. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:15-23. [PMID: 20000681 DOI: 10.1021/es9026248] [Citation(s) in RCA: 605] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Life and element cycling on Earth is directly related to electron transfer (or redox) reactions. An understanding of biogeochemical redox processes is crucial for predicting and protecting environmental health and can provide new opportunities for engineered remediation strategies. Energy can be released and stored by means of redox reactions via the oxidation of labile organic carbon or inorganic compounds (electron donors) by microorganisms coupled to the reduction of electron acceptors including humic substances, iron-bearing minerals, transition metals, metalloids, and actinides. Environmental redox processes play key roles in the formation and dissolution of mineral phases. Redox cycling of naturally occurring trace elements and their host minerals often controls the release or sequestration of inorganic contaminants. Redox processes control the chemical speciation, bioavailability, toxicity, and mobility of many major and trace elements including Fe, Mn, C, P, N, S, Cr, Cu, Co, As, Sb, Se, Hg, Tc, and U. Redox-active humic substances and mineral surfaces can catalyze the redox transformation and degradation of organic contaminants. In this review article, we highlight recent advances in our understanding of biogeochemical redox processes and their impact on contaminant fate and transport, including future research needs.
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Affiliation(s)
- Thomas Borch
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, Colorado, USA.
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46
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Meng YT, Zheng YM, Zhang LM, He JZ. Biogenic Mn oxides for effective adsorption of Cd from aquatic environment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2009; 157:2577-2583. [PMID: 19345460 DOI: 10.1016/j.envpol.2009.02.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2008] [Revised: 02/22/2009] [Accepted: 02/25/2009] [Indexed: 05/27/2023]
Abstract
Biogenic Mn oxides exert important controls on trace metal cycling in aquatic and soil environments. A Mn-oxidizing bacterium Bacillus sp. WH4 was isolated from Fe-Mn nodules of an agrudalf in central China. The biogenic Mn oxides formed by mediation of this Mn oxidizing microorganism were identified as short-ranged and nano-sized Mn oxides. Cd adsorption isotherms, pH effect on adsorption and kinetics were investigated in comparison with an abiotic Mn oxide todorokite. Maximum adsorption of Cd to the biogenic Mn oxides and todorokite was 2.04 and 0.69 mmol g(-1) sorbent, respectively. Thus, the biogenic Mn oxides were more effective Cd adsorbents than the abiotic Mn oxide in the aquatic environment. The findings could improve our knowledge of biogenic Mn oxides formation in the environment and their important roles in the biogeochemical cycles of heavy metals.
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Affiliation(s)
- You-Ting Meng
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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47
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Wang W, Shao Z, Liu Y, Wang G. Removal of multi-heavy metals using biogenic manganese oxides generated by a deep-sea sedimentary bacterium – Brachybacterium sp. strain Mn32. Microbiology (Reading) 2009; 155:1989-1996. [DOI: 10.1099/mic.0.024141-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A deep-sea manganese-oxidizing bacterium,Brachybacteriumsp. strain Mn32, showed high Mn(II) resistance (MIC 55 mM) and Mn(II)-oxidizing/removing abilities. Strain Mn32 removed Mn(II) by two pathways: (1) oxidizing soluble Mn(II) to insoluble biogenic Mn oxides – birnessite (δ-MnO2group) and manganite (γ-MnOOH); (2) the biogenic Mn oxides further adsorb more Mn(II) from the culture. The generated biogenic Mn oxides surround the cell surfaces of strain Mn32 and provide a high capacity to adsorb Zn(II) and Ni(II). Mn(II) oxidation by strain Mn32 was inhibited by both sodium azide ando-phenanthroline, suggesting the involvement of a metalloenzyme which was induced by Mn(II). X-ray diffraction analysis showed that the crystal structures of the biogenic Mn oxides were different from those of commercial pyrolusite (β-MnO2group) and fresh chemically synthesized vernadite (δ-MnO2group). The biogenic Mn oxides generated by strain Mn32 showed two to three times higher Zn(II) and Ni(II) adsorption abilities than commercial and fresh synthetic MnO2. The crystal structure and the biogenic MnO2types may be important factors for the high heavy metal adsorption ability of strain Mn32. This study provides potential applications of a new marine Mn(II)-oxidizing bacterium in heavy metal bioremediation and increases our basic knowledge of microbial manganese oxidation mechanisms.
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Affiliation(s)
- Wenming Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Zongze Shao
- The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, PR China
| | - Yanjun Liu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Gejiao Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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Mn(II) oxidation is catalyzed by heme peroxidases in "Aurantimonas manganoxydans" strain SI85-9A1 and Erythrobacter sp. strain SD-21. Appl Environ Microbiol 2009; 75:4130-8. [PMID: 19411418 DOI: 10.1128/aem.02890-08] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A new type of manganese-oxidizing enzyme has been identified in two alphaproteobacteria, "Aurantimonas manganoxydans" strain SI85-9A1 and Erythrobacter sp. strain SD-21. These proteins were identified by tandem mass spectrometry of manganese-oxidizing bands visualized by native polyacrylamide gel electrophoresis in-gel activity assays and fast protein liquid chromatography-purified proteins. Proteins of both alphaproteobacteria contain animal heme peroxidase and hemolysin-type calcium binding domains, with the 350-kDa active Mn-oxidizing protein of A. manganoxydans containing stainable heme. The addition of both Ca(2+) ions and H(2)O(2) to the enriched protein from Aurantimonas increased manganese oxidation activity 5.9-fold, and the highest activity recorded was 700 microM min(-1) mg(-1). Mn(II) is oxidized to Mn(IV) via an Mn(III) intermediate, which is consistent with known manganese peroxidase activity in fungi. The Mn-oxidizing protein in Erythrobacter sp. strain SD-21 is 225 kDa and contains only one peroxidase domain with strong homology to the first 2,000 amino acids of the peroxidase protein from A. manganoxydans. The heme peroxidase has tentatively been named MopA (manganese-oxidizing peroxidase) and sheds new light on the molecular mechanism of Mn oxidation in prokaryotes.
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49
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Contribution of biomineralization during growth of polymetallic nodules and ferromanganese crusts from the Pacific Ocean. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11706-009-0033-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Anderson CR, Dick GJ, Chu ML, Cho JC, Davis RE, Bräuer SL, Tebo BM. Aurantimonas manganoxydans, sp. nov. and Aurantimonas litoralis, sp. nov.: Mn(II) oxidizing representatives of a globally distributed clade of alpha-Proteobacteria from the order Rhizobiales. GEOMICROBIOLOGY JOURNAL 2009; 26:189-198. [PMID: 19768133 PMCID: PMC2746641 DOI: 10.1080/01490450902724840] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Several closely related Mn(II)-oxidizing alpha-Proteobacteria were isolated from very different marine environments: strain SI85-9A1 from the oxic/anoxic interface of a stratified Canadian fjord, strain HTCC 2156 from the surface waters off the Oregon coast, and strain AE01 from the dorsal surface of a hydrothermal vent tubeworm. 16S rRNA analysis reveals that these isolates are part of a tight phylogenetic cluster with previously characterized members of the genus Aurantimonas. Other organisms within this clade have been isolated from disparate environments such as surface waters of the Arctic and Mediterranean seas, a deep-sea hydrothermal plume, and a Caribbean coral. Further analysis of all these strains revealed that many of them are capable of oxidizing dissolved Mn(II) and producing particulate Mn(III/IV) oxides. Strains SI85-9A1 and HTCC 2156 were characterized further. Despite sharing nearly identical 16S rRNA gene sequences with the previously described Aurantimonas coralicida, whole genome DNA-DNA hybridization indicated that their overall genomic similarity is low. Polyphasic phenotype characterization further supported distinguishing characteristics among these bacteria. Thus SI85-9A1 and HTCC 2156 are described as two new species within the family 'Aurantimionadaceae': Aurantimonas manganoxydans sp. nov. and Aurantimonas litoralis sp. nov. This clade of bacteria is widely distributed around the globe and may be important contributors to Mn cycling in many environments. Our results highlight the difficulty in utilizing 16S rRNA-based approaches to investigate the microbial ecology of Mn(II) oxidation.
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Affiliation(s)
- C. R. Anderson
- Division of Environmental and Biomolecular Systems, Oregon Health and Science University, 20000 NW Walker Road, Beaverton, OR, 97006, USA, Telephone: 503 748 1992, Fax: 503 748 1464
| | - G. J. Dick
- Dept of Geological Sciences, University of Michigan, 2534 CC Little Bldg, 1100 North University Ave, Ann Arbor, MI 48109-1005
| | - M-L. Chu
- Division of Environmental and Biomolecular Systems, Oregon Health and Science University, 20000 NW Walker Road, Beaverton, OR, 97006, USA, Telephone: 503 748 1992, Fax: 503 748 1464
| | - J-C. Cho
- Department of Ocean Sciences, Division of Biology and Ocean Sciences, Inha University, Incheon 402-751, Republic of Korea
| | - R. E. Davis
- Division of Environmental and Biomolecular Systems, Oregon Health and Science University, 20000 NW Walker Road, Beaverton, OR, 97006, USA, Telephone: 503 748 1992, Fax: 503 748 1464
| | - S. L. Bräuer
- Rankin Science South, Appalachian State University, 572 Rivers Street, Boone, NC 28608-2027
| | - B. M. Tebo
- Division of Environmental and Biomolecular Systems, Oregon Health and Science University, 20000 NW Walker Road, Beaverton, OR, 97006, USA, Telephone: 503 748 1992, Fax: 503 748 1464
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