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Mishra N, Tripathi S, Nahar L, Sarker SD, Kumar A. Mitigation of arsenic poisoning induced oxidative stress and genotoxicity by Ocimum gratissimum L. Toxicon 2024; 238:107603. [PMID: 38184283 DOI: 10.1016/j.toxicon.2024.107603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/18/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024]
Abstract
Arsenic toxicity is a major problem across the world due to geogenic activity and has been supposed to generate free radicals and genotoxicity among the arsenic-poisoned population. There is a need to find suitable free radical quenching compounds for the arsenic-induced free radical-affected population. In the present study, Na3AsO3- induced oxidative stress and genotoxicity were evaluated in Oryctolagus cuniculus L, and quenching competency of Ocimum species was examined by applying enzymatic and non-enzymatic in vitro tests, comet assay, and Random Amplified Polymorphic Deoxyribonucleic acid - Polymerase Chain Reaction (RAPD-PCR) methods. In the present study, oxidative damage due to Na3AsO3 intoxication in O. cuniculus L has been confirmed followed by substantive genotoxicity, and in a further study, it has also been reported that the extract of O. gratissimum L lowers the oxidative stress in experimental animals confirmed by a decrease in Malondialdehyde (MDA) 4.78 ± 0.05 (nmol/mg protein), and an increase in Glutathione (GSH) 2.87 ± 0.50 (μmoles/mg proteins), Superoxide Dismutase (SOD) 1.78 ± 0.03(Units/mg protein), Catalase (CAT) 2.72 ± 0.02 (μmoles of H2O2 consumed/min/mg proteins) and Glutathione peroxidase (GPX) 7.43 ± 0.01 (μg of glutathione utilized/min/mg protein). A positive impact of extract of O. gratissimum L on protection of genotoxicity has been also confirmed by Random Amplified Polymorphic DNA (RAPD) based reduction in polymorphic bands of Deoxyribonucleic acid (DNA) from 6.5 to 3.16 and comet assay-based increase in head DNA % (87.86 ± 1.58), tail moment (1.07 ± 0.27) and decrease in tail DNA % (12.13 ± 1.58) & tail length (8.2 ± 1.46) at 5% P in lymphocytes. A significant level reduction in free radicals and reduction in DNA polymorphism has proved the competency of test material for the development of suitable antidotes against arsenicosis.
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Affiliation(s)
- Nikhil Mishra
- Department of Biotechnology, Government V.Y.T.PG Autonomous College, Durg, Chhattisgarh, India
| | - Seema Tripathi
- Women Scientist, Department of Science and Technology, Government of India, India
| | - Lutfun Nahar
- Laboratory of Growth Regulators, Institute of Experimental Botany ASCR & Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Satyajit D Sarker
- Centre of Natural Product Discovery, School of Pharmacy and Biomolecular Science, Liverpool John Moores University, UK
| | - Anil Kumar
- Department of Biotechnology, Government V.Y.T.PG Autonomous College, Durg, Chhattisgarh, India.
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2
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Hassan Z, Westerhoff HV. Arsenic Contamination of Groundwater Is Determined by Complex Interactions between Various Chemical and Biological Processes. TOXICS 2024; 12:89. [PMID: 38276724 PMCID: PMC11154318 DOI: 10.3390/toxics12010089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 01/27/2024]
Abstract
At a great many locations worldwide, the safety of drinking water is not assured due to pollution with arsenic. Arsenic toxicity is a matter of both systems chemistry and systems biology: it is determined by complex and intertwined networks of chemical reactions in the inanimate environment, in microbes in that environment, and in the human body. We here review what is known about these networks and their interconnections. We then discuss how consideration of the systems aspects of arsenic levels in groundwater may open up new avenues towards the realization of safer drinking water. Along such avenues, both geochemical and microbiological conditions can optimize groundwater microbial ecology vis-à-vis reduced arsenic toxicity.
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Affiliation(s)
- Zahid Hassan
- Department of Molecular Cell Biology, A-Life, Faculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
- Department of Genetic Engineering and Biotechnology, Jagannath University, Dhaka 1100, Bangladesh
| | - Hans V. Westerhoff
- Department of Molecular Cell Biology, A-Life, Faculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
- School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, UK
- Synthetic Systems Biology and Nuclear Organization, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
- Stellenbosch Institute of Advanced Studies (STIAS), Wallenberg Research Centre at Stellenbosch University, Stellenbosch 7600, South Africa
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Wu YF, Chen J, Xie WY, Peng C, Tang ST, Rosen BP, Kappler A, Zhang J, Zhao FJ. Anoxygenic phototrophic arsenite oxidation by a Rhodobacter strain. Environ Microbiol 2023; 25:1538-1548. [PMID: 36978205 PMCID: PMC10676076 DOI: 10.1111/1462-2920.16380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/18/2023] [Indexed: 03/30/2023]
Abstract
Microbially mediated arsenic redox transformations are key for arsenic speciation and mobility in rice paddies. Whereas anaerobic anoxygenic photosynthesis coupled to arsenite (As(III)) oxidation has been widely examined in arsenic-replete ecosystems, it remains unknown whether this light-dependent process exists in paddy soils. Here, we isolated a phototrophic purple bacteria, Rhodobacter strain CZR27, from an arsenic-contaminated paddy soil and demonstrated its capacity to oxidize As(III) to arsenate (As(V)) using malate as a carbon source photosynthetically. Genome sequencing revealed an As(III)-oxidizing gene cluster (aioXSRBA) encoding an As(III) oxidase. Functional analyses showed that As(III) oxidation under anoxic phototrophic conditions correlated with transcription of the large subunit of the As(III) oxidase aioA gene. Furthermore, the non-As(III) oxidizer Rhodobacter capsulatus SB1003 heterologously expressing aioBA from strain CZR27 was able to oxidize As(III), indicating that aioBA was responsible for the observed As(III) oxidation in strain CZR27. Our study provides evidence for the presence of anaerobic photosynthesis-coupled As(III) oxidation in paddy soils, highlighting the importance of light-dependent, microbe-mediated arsenic redox changes in paddy arsenic biogeochemistry.
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Affiliation(s)
- Yi-Fei Wu
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Chen
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA
| | - Wan-Ying Xie
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chao Peng
- College of Life Sciences, China West Normal University, Nanchong, China
| | - Shi-Tong Tang
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Barry P. Rosen
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA
| | - Andreas Kappler
- Geomicrobiology, Department of Geoscience, University of Tuebingen, Tuebingen 72076, Germany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight Infection, Tuebingen 72076, Germany
| | - Jun Zhang
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang-Jie Zhao
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
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4
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Won S, Shin C, Kang HY. Potential Self-Attenuation of Arsenic by Indigenous Microorganisms in the Nakdong River. Microorganisms 2023; 11:1910. [PMID: 37630470 PMCID: PMC10457984 DOI: 10.3390/microorganisms11081910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/17/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023] Open
Abstract
The toxic element arsenic (As) has become the major focus of global research owing to its harmful effects on human health, resulting in the establishment of several guidelines to prevent As contamination. The widespread industrial use of As has led to its accumulation in the environment, increasing the necessity to develop effective remediation technologies. Among various treatments, such as chemical, physical, and biological treatments, used to remediate As-contaminated environments, biological methods are the most economical and eco-friendly. Microbial oxidation of arsenite (As(III)) to arsenate (As(V)) is a primary detoxification strategy for As remediation as it reduces As toxicity and alters its mobility in the environment. Here, we evaluated the self-detoxification potential of microcosms isolated from Nakdong River water by investigating the autotrophic and heterotrophic oxidation of As(III) to As(V). Experimental data revealed that As(III) was oxidized to As(V) during the autotrophic and heterotrophic growth of river water microcosms. However, the rate of oxidation was significantly higher under heterotrophic conditions because of the higher cell growth and density in an organic-matter-rich environment compared to that under autotrophic conditions without the addition of external organic matter. At an As(III) concentration > 5 mM, autotrophic As(III) oxidation remained incomplete, even after an extended incubation time. This inhibition can be attributed to the toxic effect of the high contaminant concentration on bacterial growth and the acidification of the growth medium with the oxidation of As(III) to As(V). Furthermore, we isolated representative pure cultures from both heterotrophic- and autotrophic-enriched cultures. The new isolates revealed new members of As(III)-oxidizing bacteria in the diversified bacterial community. This study highlights the natural process of As attenuation within river systems, showing that microcosms in river water can detoxify As under both organic-matter-rich and -deficient conditions. Additionally, we isolated the bacterial strains HTAs10 and ATAs5 from the microcosm which can be further investigated for potential use in As remediation systems. Our findings provide insights into the microbial ecology of As(III) oxidation in river ecosystems and provide a foundation for further investigations into the application of these bacteria for bioremediation.
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Affiliation(s)
- Sangmin Won
- Department of Microbiology, Pusan National University, Busan 46241, Republic of Korea
- Education/Research Group of Longevity and Marine Biotechnology for Innovative Talent, Pusan National University, Busan 46241, Republic of Korea
| | - Chajeong Shin
- BUSAN IL Science Highschool, Busan 49317, Republic of Korea;
| | - Ho Young Kang
- Department of Microbiology, Pusan National University, Busan 46241, Republic of Korea
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Zhao M, Zheng G, Kang X, Zhang X, Guo J, Zhang M, Zhang J, Chen Y, Xue L. Arsenic pollution remediation mechanism and preliminary application of arsenic-oxidizing bacteria isolated from industrial wastewater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 324:121384. [PMID: 36868549 DOI: 10.1016/j.envpol.2023.121384] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Microbial remediation is vital for improving heavy metal-polluted water. In this work, two bacterial strains, K1 (Acinetobacter gandensis) and K7 (Delftiatsuruhatensis), with high tolerance to and strong oxidation of arsenite [As(III)], were screened from industrial wastewater samples. These strains tolerated 6800 mg/L As(III) in a solid medium and 3000 mg/L (K1) and 2000 mg/L (K7) As(III) in a liquid medium; arsenic (As) pollution was repaired through oxidation and adsorption. The As(III) oxidation rates of K1 and K7 were the highest at 24 h (85.00 ± 0.86%) and 12 h (92.40 ± 0.78%), respectively, and the maximum gene expression levels of As oxidase in these strains were observed at 24 and 12 h. The As(III) adsorption efficiencies of K1 and K7 were 30.70 ± 0.93% and 43.40 ± 1.10% at 24 h, respectively. The strains exchanged and formed a complex with As(III) through the -OH, -CH3, and C]O groups, amide bonds, and carboxyl groups on the cell surfaces. When the two strains were co-immobilized with Chlorella, the adsorption efficiency of As(III) improved (76.46 ± 0.96%) within 180 min, thereby exhibiting good adsorption and removal effects of other heavy metals and pollutants. These results outlined an efficient and environmentally friendly method for the cleaner production of industrial wastewater.
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Affiliation(s)
- Mengmeng Zhao
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China.
| | - Gege Zheng
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China
| | - Xiuyun Kang
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China
| | - Xiaoyan Zhang
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China
| | - Junming Guo
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Donggang West Rd. 320, Lanzhou, 730000, China
| | - Mingxia Zhang
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China
| | - Jingwen Zhang
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China
| | - Yiping Chen
- State Key Lab of Loess Science , Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
| | - Lingui Xue
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, No. 88, Anning West Road, Anning District, Lanzhou, Gansu, China
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6
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Mullis MM, Selwyn JD, Kevorkian R, Tague ED, Castro HF, Campagna SR, Lloyd KG, Reese BK. Microbial survival mechanisms within serpentinizing Mariana forearc sediments. FEMS Microbiol Ecol 2023; 99:6985003. [PMID: 36631299 DOI: 10.1093/femsec/fiad003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 12/07/2022] [Accepted: 01/10/2023] [Indexed: 01/13/2023] Open
Abstract
Marine deep subsurface sediment is often a microbial environment under energy-limited conditions. However, microbial life has been found to persist and even thrive in deep subsurface environments. The Mariana forearc represents an ideal location for determining how microbial life can withstand extreme conditions including pH 10-12.5 and depleted nutrients. The International Ocean Discovery Program Expedition 366 to the Mariana Convergent Margin sampled three serpentinizing seamounts located along the Mariana forearc chain with elevated concentrations of methane, hydrogen, and sulfide. Across all three seamount summits, the most abundant transcripts were for cellular maintenance such as cell wall and membrane repair, and the most abundant metabolic pathways were the Entner-Doudoroff pathway and tricarboxylic acid cycle. At flank samples, sulfur cycling involving taurine assimilation dominated the metatranscriptomes. The in situ activity of these pathways was supported by the detection of their metabolic intermediates. All samples had transcripts from all three domains of Bacteria, Archaea, and Eukarya, dominated by Burkholderiales, Deinococcales, and Pseudomonales, as well as the fungal group Opisthokonta. All samples contained transcripts for aerobic methane oxidation (pmoABC) and denitrification (nirKS). The Mariana forearc microbial communities show activity not only consistent with basic survival mechanisms, but also coupled metabolic reactions.
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Affiliation(s)
- Megan M Mullis
- Life Sciences Department, Texas A&M University - Corpus Christi, Corpus Christi, TX, United States.,Dauphin Island Sea Lab, Mobile, AL, United States
| | - Jason D Selwyn
- Life Sciences Department, Texas A&M University - Corpus Christi, Corpus Christi, TX, United States
| | - Richard Kevorkian
- Microbiology Department, University of Tennessee, Knoxville, TN, United States
| | - Eric D Tague
- Microbiology Department, University of Tennessee, Knoxville, TN, United States
| | - Hector F Castro
- Microbiology Department, University of Tennessee, Knoxville, TN, United States.,Chemistry Department, UTK Biological and Small Molecule Mass Spectrometry Core, Knoxville, TN, United States
| | - Shawn R Campagna
- Microbiology Department, University of Tennessee, Knoxville, TN, United States.,Chemistry Department, UTK Biological and Small Molecule Mass Spectrometry Core, Knoxville, TN, United States
| | - Karen G Lloyd
- Microbiology Department, University of Tennessee, Knoxville, TN, United States
| | - Brandi Kiel Reese
- Dauphin Island Sea Lab, Mobile, AL, United States.,Marine Sciences Department, University of South Alabama, Mobile, AL, United States
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7
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Ke T, Zhang D, Guo H, Xiu W, Zhao Y. Geogenic arsenic and arsenotrophic microbiome in groundwater from the Hetao Basin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158549. [PMID: 36075436 DOI: 10.1016/j.scitotenv.2022.158549] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 08/28/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
High arsenic (As) in groundwater is an environmental issue of global concern, which is closely related to microbe-mediated As biogeochemical cycling. However, the distribution of genes related to As cycling and underlying microbial As biogeochemical processes in high As groundwater remain elusive. Hence, we profiled the As cycling genes (arsC, arrA, and aioA genes) and indigenous microbial communities in groundwater from a typical high As area, the Hetao Basin from China, using amplicon sequencing and qPCR techniques. Here, we revealed the significant difference in microbial community structure between low As groundwater samples (LG) and high As groundwater samples (HG). Acinetobacter, Thiovirga, Hydrogenophaga, and Sulfurimonas were dominant in LG, while Aquabcterium, Acinetobacter, Sphingomonas, Pseudomonas, Desulfomicrobium, Hydrogenophaga, and Nitrospira were predominant in HG. Shannon and Chao indices of the microbial communities in HG were significantly higher than those of in LG. Alpha diversity and abundance of arsC and arrA genes were higher than those of aioA genes. The significant positive correlation was uncovered between the abundances of arsC and aioA genes, suggesting the cooccurrence of As functional genes in groundwater. Sphingopyxis, Agrobacterium, Klebsiella, Hoeflea, and Aeromonas represented the dominant taxa within the As (V) reducers communities. Distance-based redundancy analysis showed that ORP, pH, Astot, Mn, and DOC were the key factors shaping the diverse microbial populations, while ORP, S2-, As(III), Fe(II), NH4+, pH, Mn, SO42-, As(V), temperature, and P as the main drivers affecting arsenotrophic microbiota. This work provides an insight into microbial communities linked to As biogeochemical processes in high As groundwater, playing a fundamental role in groundwater As cycling.
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Affiliation(s)
- Tiantian Ke
- Ministry of Education, Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing, China
| | - Di Zhang
- Ministry of Education, Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing, China
| | - Huaming Guo
- Ministry of Education, Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing, China.
| | - Wei Xiu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing, China
| | - Yi Zhao
- Ministry of Education, Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, China
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Zhang D, Lei M, Wan X, Guo G, Zhao X, Liu Y. Responses of diversity and arsenic-transforming functional genes of soil microorganisms to arsenic hyperaccumulator (Pteris vittata L.)/pomegranate (Punica granatum L.) intercropping. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:157767. [PMID: 35926620 DOI: 10.1016/j.scitotenv.2022.157767] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/28/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Intercropping of arsenic (As) hyperaccumulator (Pteris vittata L.) with crops can reduce the As concentration in soil and the resulting ecological and health risks, while maintaining certain economic benefits. However, it is still unclear how As-transforming functional bacteria and dominant bacteria in the rhizosphere of P. vittata affect the microbial properties of crop rhizosphere soil, as well as how As concentration and speciation change in crop rhizosphere soil under intercropping. This is of great significance for understanding the biogeochemical cycle of As in soil and crops. This study aimed to use high-throughput sequencing and quantitative polymerase chain reaction (qPCR) to analyze the effects of different rhizosphere isolation patterns on the bacterial diversity and the copy number of As-transforming functional genes in pomegranate (Punica granatum L.) rhizosphere soil. The results showed that the abundance of bacteria in the rhizosphere soil of pomegranate increased by 16.3 %, and the soil bacterial community structure significantly changed. C_Alphaproteobacteria and o_Rhizobiales bacteria significantly accumulated in the rhizosphere of pomegranate. The copy number of As methylation (arsM) gene in pomegranate rhizosphere soil significantly increased by 63.37 %. The concentrations of nonspecifically sorbed As (F1), As associated with amorphous Fe (hydr)oxides (F3), and the total As (FT) decreased; the proportion of As (III) in pomegranate rhizosphere soil decreased; and the proportion of As (V) increased in pomegranate rhizosphere soil. c_Alphaproteobacteria and o_Rhizobiales accumulated in crop rhizosphere soil under the intercropping of P. vittata with crops. Also, the copy number of As methylation functional genes in crop rhizosphere soil significantly increased, which could reduce As (III) proportion in crop rhizosphere soil. These changes favored simultaneous agricultural production and soil remediation. The results provided the theoretical basis and practical guidance for the safe utilization of As-contaminated soil in the intercropping of As-hyperaccumulator and cash crops.
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Affiliation(s)
- Degang Zhang
- Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; HongHe University, Mengzi 661100, Yunnan, China
| | - Mei Lei
- Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiaoming Wan
- Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Guo
- Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaofeng Zhao
- Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanhong Liu
- HongHe University, Mengzi 661100, Yunnan, China
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9
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Cloning and functional characterization of arsenite oxidase (aoxB) gene associated with arsenic transformation in Pseudomonas sp. strain AK9. Gene X 2022; 850:146926. [DOI: 10.1016/j.gene.2022.146926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/22/2022] Open
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10
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Hasegawa H, Akhyar O, Omori Y, Kato Y, Kosugi C, Miki O, Mashio AS, Papry RI. Role of Fe plaque on arsenic biotransformation by marine macroalgae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149776. [PMID: 34525751 DOI: 10.1016/j.scitotenv.2021.149776] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/28/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Macroalgae can cycle arsenic (As) in the environment. In this study, the role of iron (Fe) plaque manipulation at active sites in the As biotransformation mechanism was investigated. The strain of marine macroalgal species, Pyrophia yezoensis, was inoculated in association with arsenate (As(V)) (1.0 μmol L-1) and phosphate (10 μmol L-1) in the medium for 7 days under laboratory-controlled conditions. The Fe plaque was removed by washing the Ti(III)-citrate-EDTA solution before inoculation. The limitation of Fe plaque did not significantly (p > 0.05) affect the chlorophyll fluorescence due to cellular regeneration, which was initiated immediately after washing. However, the speciation and uptake rate of As(V) increased significantly and reduced the inhibitory effect of P on the intracellular uptake of As(V) by P. yezoensis. In the culture medium without Fe plaque, approximately 66% of As(V) was removed with Vmax = 0.32 and Km = 1.92. In the absence of Fe plaque, methylated As species, such as dimethylarsinate (DMAA(V)), was recorded 0.28 μmol L-1, while in the presence of Fe plaque, the value was 0.16 μmol L-1. Inorganic trivalent As (As(III)) was absent in the washed samples; however, 0.53 μmol L-1 concentration of As(III) was still found in the presence of Fe plaque on day 7 of incubation. The results indicated that the absence of Fe plaque promoted higher intracellular uptake of As species, reduced the inhibitory effect of P, mitigated the co-precipitation bond between AsFe plaque and enhanced the detoxification process by DMAA excretion from the cell.
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Affiliation(s)
- Hiroshi Hasegawa
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
| | - Okviyoandra Akhyar
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan; Department of Chemistry Education, Islamic University of Kalimantan Muhammad Arsyad Al Banjari, Jl. Adhyaksa No. 2 Kayu Tangi, Banjarmasin 70123, Indonesia
| | - Yoshiki Omori
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yusuke Kato
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Chika Kosugi
- Advanced Technology Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu City, Chiba 293-8511, Japan
| | - Osamu Miki
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Asami Suzuki Mashio
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Rimana Islam Papry
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
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11
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Xia B, Yang Y, Wu Y, Li X, Li F, Liu T. Impacts of Redox Conditions on Arsenic and Antimony Transformation in Paddy Soil: Kinetics and Functional Bacteria. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 107:1121-1127. [PMID: 33904944 DOI: 10.1007/s00128-021-03242-3] [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: 11/13/2020] [Accepted: 04/17/2021] [Indexed: 06/12/2023]
Abstract
Arsenic (As) and antimony (Sb) are known carcinogens and are present as contaminants in paddy soils. However, the complicated dynamics of the mobility of these metalloids have not been well understood due to changing redox conditions in paddy soils. Herein, the kinetics of dissolved As and Sb, and functional bacteria/genes were examined in a paddy soil cultured under aerobic and anaerobic conditions. Under aerobic condition, dissolved As(V) and Sb(V) increased constantly due to sulfide oxidation by O2 and bound As and Sb were released. Under anaerobic condition, the reduction of As(V) and Sb(V) occurred, and the mobility of As and Sb were affected by soil redox processes. The bacteria with functional genes aioA and arrA were responsible for the direct As/Sb transformation, while Fe- and N-related bacteria had an indirect effect on the fate of As/Sb via coupling with the redox processes of Fe and N. These findings improve understanding of the mobility of As and Sb in paddy soil systems under different redox conditions.
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Affiliation(s)
- Bingqing Xia
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou, 510650, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yang Yang
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou, 510650, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yundang Wu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou, 510650, People's Republic of China
| | - Xiaomin Li
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, SCNU Environmental Research Institute, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Fangbai Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou, 510650, People's Republic of China
| | - Tongxu Liu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Academy of Sciences, Guangzhou, 510650, People's Republic of China.
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12
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Diversity and Metabolic Potentials of As(III)-Oxidizing Bacteria in Activated Sludge. Appl Environ Microbiol 2021; 87:e0176921. [PMID: 34756059 DOI: 10.1128/aem.01769-21] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Biological arsenite [As(III)] oxidation is an important process in the removal of toxic arsenic (As) from contaminated water. However, the diversity and metabolic potentials of As(III)-oxidizing bacteria (AOB) responsible for As(III) oxidation in wastewater treatment facilities are not well documented. In this study, two groups of bioreactors inoculated with activated sludge were operated under anoxic or oxic conditions to treat As-containing synthetic wastewater. Batch tests of inoculated sludges from the bioreactors further indicated that microorganisms could use nitrate or oxygen as electron acceptors to stimulate biological As(III) oxidation, suggesting the potentials of this process in wastewater treatment facilities. In addition, DNA-based stable isotope probing (DNA-SIP) was performed to identify the putative AOB in the activated sludge. Bacteria associated with Thiobacillus were identified as nitrate-dependent AOB, while bacteria associated with Hydrogenophaga were identified as aerobic AOB in activated sludge. Metagenomic binning reconstructed a number of high-quality metagenome-assembled genomes (MAGs) associated with the putative AOB. Functional genes encoding As resistance, As(III) oxidation, denitrification, and carbon fixation were identified in these MAGs, suggesting their potentials for chemoautotrophic As(III) oxidation. In addition, the presence of genes encoding secondary metabolite biosynthesis and extracellular polymeric substance metabolism in these MAGs may facilitate the proliferation of these AOB in activated sludge and enhance their capacity for As(III) oxidation. IMPORTANCE AOB play an important role in the removal of toxic arsenic from wastewater. Most of the AOB have been isolated from natural environments. However, knowledge regarding the structure and functional roles of As(III)-oxidizing communities in wastewater treatment facilities is not well documented. The combination of DNA-SIP and metagenomic binning provides an opportunity to elucidate the diversity of in situ AOB community inhabiting the activated sludges. In this study, the putative AOB responsible for As(III) oxidation in wastewater treatment facilities were identified, and their metabolic potentials, including As(III) oxidation, denitrification, carbon fixation, secondary metabolite biosynthesis, and extracellular polymeric substance metabolism, were investigated. This observation provides an understanding of anoxic and/or oxic AOB during the As(III) oxidation process in wastewater treatment facilities, which may contribute to the removal of As from contaminated water.
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13
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Hu M, Li F, Qiao J, Yuan C, Yu H, Zhuang L. New Arsenite Oxidase Gene ( aioA) PCR Primers for Assessing Arsenite-Oxidizer Diversity in the Environment Using High-Throughput Sequencing. Front Microbiol 2021; 12:691913. [PMID: 34690945 PMCID: PMC8527091 DOI: 10.3389/fmicb.2021.691913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 09/16/2021] [Indexed: 11/13/2022] Open
Abstract
Gene encoding the large subunit of As(III) oxidase (AioA), an important component of the microbial As(III) oxidation system, is a widely used biomarker to characterize As(III)-oxidizing communities in the environment. However, many studies were restricted to a few sequences generated by clone libraries and Sanger sequencing, which may have underestimated the diversity of As(III)-oxidizers in natural environments. In this study, we designed a primer pair, 1109F (5'-ATC TGG GGB AAY RAC AAY TA-3') and 1548R (5'-TTC ATB GAS GTS AGR TTC AT-3'), targeting gene sequence encoding for the conserved molybdopterin center of the AioA protein, yielding amplicons approximately 450 bp in size that are feasible for highly parallel amplicon sequencing. By utilizing in silico analyses and the experimental construction of clone libraries using Sanger sequencing, the specificity and resolution of 1109F/1548R are approximated with two other previously published and commonly used primers, i.e., M1-2F/M3-2R and deg1F/deg1R. With the use of the 1109F/1548R primer pair, the taxonomic composition of the aioA genes was similar both according to the Sanger and next-generation sequencing (NGS) platforms. Furthermore, high-throughput amplicon sequencing using the primer pair, 1109F/1548R, successfully identified the well-known As(III)-oxidizers in paddy soils and sediments, and they also revealed the differences in the community structure and composition of As(III)-oxidizers in above two biotopes. The random forest analysis showed that the dissolved As(III) had the highest relative influence on the Chao1 index of the aioA genes. These observations demonstrate that the newly designed PCR primers enhanced the ability to detect the diversity of aioA-encoding microorganisms in environments using highly parallel short amplicon sequencing.
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Affiliation(s)
- Min Hu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou, China
| | - Fangbai Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou, China
| | - Jiangtao Qiao
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou, China
| | - Chaolei Yuan
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, China
| | - Huanyun Yu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou, China
| | - Li Zhuang
- School of Environment, Jinan University, Guangzhou, China
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14
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Nie Z, Hu L, Zhang D, Qian Y, Long Y, Shen D, Fang C, Yao J, Liu J. Drivers and ecological consequences of arsenite detoxification in aged semi-aerobic landfill. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126597. [PMID: 34252667 DOI: 10.1016/j.jhazmat.2021.126597] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Microbial populations responsible for arsenite [As(III)] detoxification were examined in aged refuse treated with 75 μM As(III) under semi-aerobic conditions. As(III) was rapidly oxidized to As(V) via microbial activity, and substantial As was fixed in the solid phase. The abundance of arsenite oxidase genes (aioA) was about four times higher in the moderate As(III) stressed treatment than in the untreated control. Network analysis of microbial community 16S rRNA genes based on MRT (random matrix theory) further illuminated details about microbe-microbe interactions, and showed six ecological clusters. A total of 166 "core" taxa were identified by within-module connectivity and among-module connectivity values. When compared with the control treatment without As(III), 12 putative keystone operational taxonomic units were positively correlated with As(III) oxidation, of which 10 of these were annotated to genera level. Eight genera were associated with As(III) detoxification: Pseudomonas, Paenalcaligenes, Proteiniphilum, Moheibacter, Mobilitalea, Anaerosporobacter, Syntrophomonas and Pusillimonas. Most of those putative keystone taxa were rare species in landfill, which suggests that low-abundance taxa might significantly contribute to As(III) oxidation.
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Affiliation(s)
- Zhiyuan Nie
- College of Quality and Safety Engineering, Institution of Industrial Carbon Metrology, China Jiliang University, Hangzhou 310018, China
| | - Lifang Hu
- College of Quality and Safety Engineering, Institution of Industrial Carbon Metrology, China Jiliang University, Hangzhou 310018, China.
| | - Dongchen Zhang
- College of Quality and Safety Engineering, Institution of Industrial Carbon Metrology, China Jiliang University, Hangzhou 310018, China
| | - Yating Qian
- College of Quality and Safety Engineering, Institution of Industrial Carbon Metrology, China Jiliang University, Hangzhou 310018, China
| | - Yuyang Long
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
| | - Dongsheng Shen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Chengran Fang
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Jun Yao
- College of Life Science, Taizhou University, Jiaojiang 318000, China
| | - Jinbao Liu
- Zhejiang Tongji Vocational College of Science and Technology, Hangzhou 311231, China
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15
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Ziegelhöfer A, Kujala K. Assessing the Diversity and Metabolic Potential of Psychrotolerant Arsenic-Metabolizing Microorganisms From a Subarctic Peatland Used for Treatment of Mining-Affected Waters by Culture-Dependent and -Independent Techniques. Front Microbiol 2021; 12:648412. [PMID: 34295311 PMCID: PMC8290898 DOI: 10.3389/fmicb.2021.648412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 06/08/2021] [Indexed: 12/22/2022] Open
Abstract
Arsenic contamination in water by natural causes or industrial activities is a major environmental concern, and treatment of contaminated waters is needed to protect water resources and minimize the risk for human health. In mining environments, treatment peatlands are used in the polishing phase of water treatment to remove arsenic (among other contaminants), and peat microorganisms play a crucial role in arsenic removal. The present study assessed culture-independent diversity obtained through metagenomic and metatranscriptomic sequencing and culture-dependent diversity obtained by isolating psychrotolerant arsenic-tolerant, arsenite-oxidizing, and arsenate-respiring microorganisms from a peatland treating mine effluent waters of a gold mine in Finnish Lapland using a dilution-to-extinction technique. Low diversity enrichments obtained after several transfers were dominated by the genera Pseudomonas, Polaromonas, Aeromonas, Brevundimonas, Ancylobacter, and Rhodoferax. Even though maximal growth and physiological activity (i.e., arsenite oxidation or arsenate reduction) were observed at temperatures between 20 and 28°C, most enrichments also showed substantial growth/activity at 2–5°C, indicating the successful enrichments of psychrotolerant microorganisms. After additional purification, eight arsenic-tolerant, five arsenite-oxidizing, and three arsenate-respiring strains were obtained in pure culture and identified as Pseudomonas, Rhodococcus, Microbacterium, and Cadophora. Some of the enriched and isolated genera are not known to metabolize arsenic, and valuable insights on arsenic turnover pathways may be gained by their further characterization. Comparison with phylogenetic and functional data from the metagenome indicated that the enriched and isolated strains did not belong to the most abundant genera, indicating that culture-dependent and -independent methods capture different fractions of the microbial community involved in arsenic turnover. Rare biosphere microorganisms that are present in low abundance often play an important role in ecosystem functioning, and the enriched/isolated strains might thus contribute substantially to arsenic turnover in the treatment peatland. Psychrotolerant pure cultures of arsenic-metabolizing microorganisms from peatlands are needed to close the knowledge gaps pertaining to microbial arsenic turnover in peatlands located in cold climate regions, and the isolates and enrichments obtained in this study are a good starting point to establish model systems. Improved understanding of their metabolism could moreover lead to their use in biotechnological applications intended for bioremediation of arsenic-contaminated waters.
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Affiliation(s)
- Aileen Ziegelhöfer
- Faculty for Chemistry & Biotechnology, Aachen University of Applied Sciences, Jülich, Germany.,Water, Energy and Environmental Engineering Research Unit, University of Oulu, Oulu, Finland
| | - Katharina Kujala
- Water, Energy and Environmental Engineering Research Unit, University of Oulu, Oulu, Finland
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16
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Sonthiphand P, Kraidech S, Polart S, Chotpantarat S, Kusonmano K, Uthaipaisanwong P, Rangsiwutisak C, Luepromchai E. Arsenic speciation, the abundance of arsenite-oxidizing bacteria and microbial community structures in groundwater, surface water, and soil from a gold mine. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:769-785. [PMID: 34038319 DOI: 10.1080/10934529.2021.1927421] [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: 08/12/2020] [Revised: 04/26/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
The arsenic speciation, the abundance of arsenite-oxidizing bacteria, and microbial community structures in the groundwater, surface water, and soil from a gold mining area were explored using the PHREEQC model, cloning-ddPCR of the aioA gene, and high-throughput sequencing of the 16S rRNA gene, respectively. The analysis of the aioA gene showed that arsenite-oxidizing bacteria retrieved from groundwater, surface water, and soil were associated with Alphaproteobacteria, Betaproteobacteria, and Gammaproteobacteria. In groundwaters from the mining area, there were relatively high ratios of aioA/total 16S rRNA gene copies and the dominance of As5+, which suggested the presence and activity of arsenite-oxidizing bacteria. Metagenomic analysis revealed that the majority of the soil and surface water microbiomes were Proteobacteria, Actinobacteria, Bacteroidetes, and Chloroflexi, whereas the groundwater microbiomes were dominated exclusively by Betaproteobacteria and Alphaproteobacteria. Geochemical factors influencing the microbial structure in the groundwater were As, residence time, and groundwater flowrate, while those showing a positive correlation to the microbial structure in the surface water were TOC, ORP, and DO. This study provides insights into the groundwater, surface water, and soil microbiomes from a gold mine and expands the current understanding of the diversity and abundance of arsenite-oxidizing bacteria, playing a vital role in global As cycling.
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Affiliation(s)
- Prinpida Sonthiphand
- Faculty of Science, Department of Biology, Mahidol University, Bangkok, Ratchathewi, Thailand
| | - Supeerapat Kraidech
- International Postgraduate Program in Hazardous Substance and Environmental Management, Chulalongkorn University, Bangkok, Thailand
| | - Saowarod Polart
- Faculty of Science, Department of Biology, Mahidol University, Bangkok, Ratchathewi, Thailand
| | - Srilert Chotpantarat
- Faculty of Science, Department of Geology, Chulalongkorn University, Thailand
- Research Program on Controls of Hazardous Contaminants in Raw Water Resources for Water Scarcity Resilience, Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Thailand
- Research Unit of Site Remediation on Metals Management from Industry and Mining (Site Rem), Chulalongkorn University, Bangkok, Thailand
| | - Kanthida Kusonmano
- Bioinformatics and Systems Biology Program, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
- Systems Biology and Bioinformatics Research Laboratory, Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Pichahpuk Uthaipaisanwong
- Bioinformatics and Systems Biology Program, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Chalida Rangsiwutisak
- Bioinformatics and Systems Biology Program, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Ekawan Luepromchai
- Research Program on Remediation Technologies for Petroleum Contamination, Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok, Thailand
- Microbial Technology for Marine Pollution Treatment Research Unit, Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
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17
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Battaglia-Brunet F, Le Guédard M, Faure O, Charron M, Hube D, Devau N, Joulian C, Thouin H, Hellal J. Influence of agricultural amendments on arsenic biogeochemistry and phytotoxicity in a soil polluted by the destruction of arsenic-containing shells. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124580. [PMID: 33248819 DOI: 10.1016/j.jhazmat.2020.124580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 10/05/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
Agricultural soils can contain high arsenic (As) concentrations due to specific geological contexts or pollution. Fertilizer amendments could influence As speciation and mobility thus increasing its transfer to crops and its toxicity. In the present study, field-relevant amounts of fertilizers were applied to soils from a cultivated field that was a former ammunition-burning site. Potassium phosphate (KP), ammonium sulfate and organic matter (OM) were applied to these soils in laboratory experiments to assess their impact on As leaching, bioavailability to Lactuca sativa and microbial parameters. None of the fertilizers markedly influenced As speciation and mobility, although trends showed an increase of mobility with KP and a decrease of mobility with ammonium sulfate. Moreover, KP induced a small increase of As in Lactuca sativa, and the polluted soil amended with ammonium sulfate was significantly less phytotoxic than the un-amended soil. Most probable numbers of AsIII-oxidizing microbes and AsIII-oxidizing activity were strongly linked to As levels in water and soils. Ammonium sulfate negatively affected AsIII-oxidizing activity in the un-polluted soil. Whereas no significant effect on As speciation in water could be detected, amendments may have an impact in the long term.
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Affiliation(s)
| | - Marina Le Guédard
- LEB Aquitaine Transfert - ADERA, 71 Avenue Edouard Bourlaux, CS20032, 33140 Villenave d'Ornon, France; University of Bordeaux, CNRS, Laboratoire de Biogenèse Membranaire (LBM), UMR 5200, 33140 Villenave d'Ornon, France
| | - Olivier Faure
- Mines Saint-Etienne, Univ Lyon, Univ Jean Moulin, Univ Lumière, Univ Jean Monnet, ENTPE, INSA Lyon, ENS Lyon, CNRS, UMR 5600 EVS, Centre SPIN, Departement PEG, F-42023 Saint-Etienne, France
| | - Mickael Charron
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Daniel Hube
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Nicolas Devau
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Catherine Joulian
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Hugues Thouin
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
| | - Jennifer Hellal
- French Geological Survey (BRGM), 3 Avenue Claude Guillemin, 45060 Orléans Cedex 02, France
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18
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Pipattanajaroenkul P, Chotpantarat S, Termsaithong T, Sonthiphand P. Effects of Arsenic and Iron on the Community and Abundance of Arsenite-Oxidizing Bacteria in an Arsenic-Affected Groundwater Aquifer. Curr Microbiol 2021; 78:1324-1334. [PMID: 33638670 DOI: 10.1007/s00284-021-02418-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 02/10/2021] [Indexed: 01/18/2023]
Abstract
Arsenic (As) contamination of groundwater aquifers is a global environmental problem, especially in South and Southeast Asian regions, and poses a risk to human health. Arsenite-oxidizing bacteria that transform As(III) to less toxic As(V) can be potentially used as a groundwater As remediation strategy. This study aimed to examine the community and abundance of arsenite-oxidizing bacteria in groundwater with various As concentrations from Rayong Province, Thailand using PCR-cloning-sequencing and quantitative PCR (qPCR) of catalytic subunit of arsenite oxidase gene (aioA). Key factors influencing their community and abundance were also identified. The results demonstrated that arsenite-oxidizing bacteria retrieved from groundwater were phylogenetically related to Betaproteobacteria and Alphaproteobacteria. The aioA gene abundances ranged from 8.6 × 101 to 1.1 × 104 copies per ng of genomic DNA, accounting for 0.16-1.37% of the total 16S rRNA bacterial gene copies. Although the abundance of arsenite-oxidizing bacteria in groundwater was low, groundwater with As(III) dominance likely promoted their abundance which possibly played an important role in chemolithoautotrophic oxidation of As(III) to As(V). Fe and As(III) were the major environmental factors influencing the community and abundance of arsenite-oxidizing bacteria. The knowledge gained from this study can be used to further contribute to the development of bioremediation strategies for As removal from groundwater resources.
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Affiliation(s)
- Phurinat Pipattanajaroenkul
- International Postgraduate Program in Hazardous Substance and Environmental Management, Chulalongkorn University, Bangkok, Thailand
| | - Srilert Chotpantarat
- Department of Geology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,Research Program on Controls of Hazardous Contaminants in Raw Water Resources for Water Scarcity Resilience, Center of Excellence On Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok, Thailand.,Research Unit of Green Mining (GMM), Chulalongkorn University, Bangkok, Thailand
| | - Teerasit Termsaithong
- Learning Institute, King Mongkut's University of Technology Thonburi, Bangkok, Thailand.,Theoretical and Computational Science Center (TaCS), King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Prinpida Sonthiphand
- Department of Biology, Faculty of Science, Mahidol University, 272 Rama VI Road, Ratchathewi, Bangkok, 10400, Thailand.
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19
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Zhen Z, Yan C, Zhao Y. Epiphytic bacterial community enhances arsenic uptake and reduction by Myriophyllum verticillatum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:44205-44217. [PMID: 32757129 DOI: 10.1007/s11356-020-10274-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Microbes play an important role in the biotransformation of arsenic (As) speciation in various environments. Nevertheless, whether epiphytic bacteria that attached on submerged macrophytes have the potential to influence As speciation still remains unclear. In this study, sterile or nonsterile Myriophyllum verticillatum was cultured with arsenite (As(III)) or arsenate (As(V)) to investigate the impact of epiphytic bacterial community on As uptake, transformation, and efflux. Results showed that both sterile and nonsterile M. verticillatum did not display substantial As(III) oxidation, suggesting that neither M. verticillatum nor epiphytic bacterial community has the capacities of As(III) oxidation. However, sterile M. verticillatum exhibited capacity for As(V) reduction, and the presence of epiphytic bacterial community substantially enhanced the proportions of As(III) in the medium (from 39.91 to 98.44%), indicating that epiphytic bacterial community contributes significantly to As(V) reduction in the medium. The presence of epiphytic bacterial community elevated As accumulation (by up to 2.06-fold) in plants when exposed to As(V). Results also showed that epiphytic bacterial community contributed little to As(III) efflux. Quantitative PCR of As metabolism genes revealed the dominance of the respiratory As(V) reductase genes (arrA) in epiphytic bacterial community, which might play a significant role in As(V) reduction in aquatic environments. Phylogenetic analysis of the arrA genes revealed the widely distribution and diversity of As(V)-respiring bacteria. These results highlighted the substantial impact of the epiphytic bacterial community associated with submerged aquatic macrophytes on As biogeochemistry in wetland and water environments.
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Affiliation(s)
- Zhuo Zhen
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Changzhou Yan
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| | - Yuan Zhao
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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20
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Sha Z, Chen Z, Feng Y, Xue L, Yang L, Cao L, Chu Q. Minerals loaded with oxygen nanobubbles mitigate arsenic translocation from paddy soils to rice. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122818. [PMID: 32512435 DOI: 10.1016/j.jhazmat.2020.122818] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 04/09/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
Inhibiting reductive transformation of arsenic (As) in flooded paddy soils is fundamentally important for mitigating As transfer into the food chain. In this study, oxygen-nanobubble-loaded-zeolites (ZON) and -vermiculites (VON) were tested as a novel approach for supplying oxygen to paddy soils to inhibit As influx into rice. The dynamic physio- and bio-chemical variations in the rhizosphere and bulk soil were profiled in a rhizobox experiment. Upon adding ZON and VON, the redox potential and dissolved oxygen consistently increased throughout the cultivation period. The improved redox environment inhibited As(III) release into porewater and increased As(V) adsorbed on crystalline Fe (hydr)oxides, following the reduction of arsC and arrA gene abundances and enhancement of the aioA gene. Moreover, adding ZON and VON promoted root iron plaque formation, which increased As retention on iron plaque. Both ZON and VON treatments mitigated As translocation from soil to rice, meanwhile increasing root and shoot biomass. ZON was superior to VON in repressing As transfer and promoting rice growth due to its higher oxygen loading capacity. This study provides a novel and environment-friendly material to both mitigate the As translocation from paddy soil to rice and improve rice growth.
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Affiliation(s)
- Zhimin Sha
- Graduate School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Zheng Chen
- Department of Health and Environmental Sciences, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, Jiangsu, China
| | - Yanfang Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs of People's Republic of China, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212001, China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
| | - Lihong Xue
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs of People's Republic of China, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212001, China
| | - Linzhang Yang
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs of People's Republic of China, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Linkui Cao
- Graduate School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Qingnan Chu
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs of People's Republic of China, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
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Mazumder P, Sharma SK, Taki K, Kalamdhad AS, Kumar M. Microbes involved in arsenic mobilization and respiration: a review on isolation, identification, isolates and implications. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:3443-3469. [PMID: 32170513 DOI: 10.1007/s10653-020-00549-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 02/29/2020] [Indexed: 06/10/2023]
Abstract
Microorganisms play an important role in arsenic (As) cycling in the environment. Microbes mobilize As directly or indirectly, and natural/geochemical processes such as sulphate and iron reduction, oxidative sulphide mineral dissolution, arsenite (AsO33-) oxidation and arsenate (AsO43-) respiration further aid in As cycle in the environment. Arsenate serves as an electron donor for the microbes during anaerobic conditions in the sediment. The present work reviews the recent development in As contamination, various As-metabolizing microbes and their phylogenetic diversity, to understand the role of microbial communities in As respiration and mobilization. It also summarizes the contemporary understanding of the intricate biochemistry and molecular biology of natural As metabolisms. Some successful examples of engineered microbes by harnessing these natural mechanisms for effective remediation are also discussed. The study indicates that there is an exigent need to have a clear understanding of environmental aspects of As mobilization and subsequent oxidation-reduction by a suitable microbial consortium.
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Affiliation(s)
- Payal Mazumder
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Subhash Kumar Sharma
- Environmental Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
| | - Kaling Taki
- Discipline of Civil Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, 382355, India
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Manish Kumar
- Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, 382355, India.
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22
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Microbiomes in agricultural and mining soils contaminated with arsenic in Guanajuato, Mexico. Arch Microbiol 2020; 203:499-511. [PMID: 32964256 DOI: 10.1007/s00203-020-01973-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/28/2020] [Accepted: 07/02/2020] [Indexed: 10/23/2022]
Abstract
In this report, physical and chemical properties, and total arsenic (As) concentrations were analyzed in agricultural (MASE) and mining soils (SMI) in the State of Guanajuato, México. Additionally, a metagenomic analysis of both types of soils was the bases for the identification and selection of bacteria and fungi resistant to As. The SMI soil showed higher concentration of As (39 mg kg-1) as compared to MASE soil (15 mg kg-1). The metagenome showed a total of 175,240 reads from both soils. MASE soil showed higher diversity of bacteria, while the SMI soil showed higher diversity of fungi. 16S rRNA analysis showed that the phylum Proteobacteria showed the highest proportion (39.6% in MASE and 36.4% in SMI) and Acidobacteria was the second most representative (24.2% in SMI and 11.6% in MASE). 18S rRNA analysis, showed that the phylum Glomeromycota was found only in the SMI soils (11.6%), while Ascomycota was the most abundant, followed by Basidiomycota, and Zygomycota, in both soils. Genera Bacillus and Penicillium were able to grow in As concentrations as high as 5 and 10 mM, reduced As (V) to As (III), and removed As at 9.8% and 12.1% rates, respectively. When aoxB, arsB, ACR3(1), ACR3(2,) and arrA genes were explored, only the arsB gene was identified in Bacillus sp., B. simplex, and B. megaterium. In general, SMI soils showed more microorganisms resistant to As than MASE soils. Bacteria and fungi selected in this work may show potential to be used as bioremediation agents in As contaminated soils.
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Yang YP, Tang XJ, Zhang HM, Cheng WD, Duan GL, Zhu YG. The characterization of arsenic biotransformation microbes in paddy soil after straw biochar and straw amendments. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122200. [PMID: 32044634 DOI: 10.1016/j.jhazmat.2020.122200] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/10/2020] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
Straw biochar and straw application to paddy soil dramatically altered arsenic (As) biogeochemical cycling in soil-rice system, but it remains unknown how As biotransformation microbes (ABMs) contribute to these processes. In this study, rice pot experiments combining terminal restriction fragment length polymorphism (T-RFLP) analysis and clone library were performed to characterize ABMs. Through linear discriminant analysis (LDA) effect size (LEfSe) and correlation analysis, results revealed that arrA-harbouring iron-reducing bacteria (e.g., Geobacter and Shewanella) and arsC-harbouring Gammaproteobacteria (e.g., fermentative hydrogen-producing and lignin-degrading microorganisms) potentially mediated arsenate [As(V)] reduction under biochar and straw amendments, respectively. Methanogens and sulfate-reducing bacteria (SRB) carrying arsM gene might regulate methylated As concentration in soil-rice system. Network analysis demonstrated that the association among ABMs in rhizosphere was significantly stronger than that in bulk soil. Arsenite [As(III)] methylators carrying arsM gene exhibited much stronger co-occurrence pattern with arsC-harbouring As(V) reducers than with arrA-harbouring As(V) reducers. This study would broaden our insights for the dramatic variation of As biogeochemical cycling in soil-rice system after straw biochar and straw amendments through the activities of ABMs, which could contribute to the safe rice production and high rice yield in As-contaminated fields.
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Affiliation(s)
- Yu-Ping Yang
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xian-Jin Tang
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Hong-Mei Zhang
- Jiaxing Academy of Agricultural Sciences, Xiuzhou District, Jiaxing 314016, China
| | - Wang-Da Cheng
- Jiaxing Academy of Agricultural Sciences, Xiuzhou District, Jiaxing 314016, China
| | - Gui-Lan Duan
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Yong-Guan Zhu
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
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Sun X, Kong T, Xu R, Li B, Sun W. Comparative characterization of microbial communities that inhabit arsenic-rich and antimony-rich contaminated sites: Responses to two different contamination conditions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114052. [PMID: 32041010 DOI: 10.1016/j.envpol.2020.114052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/02/2020] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Due to extensive mining and industrial activities, arsenic (As) and antimony (Sb) contaminations are becoming a global environmental concern. Both As and Sb are toxic and carcinogenic metalloids from the group 15 in the periodic table. Since As and Sb share many similar geochemical properties, it is often assumed that they exert similar environmental pressure on the native microbial communities. This hypothesis, however, still requires further confirmation. In the current study, a systematic comparison of microbial responses to As and Sb contamination were conducted. The results suggested that regular geochemical parameters, such as pH, nitrate, and TOC, were the driving forces for shaping the microbial community. In correspondence, two heavily contaminated groups showed similar microbial community compositions and the same microbial populations were enriched. The interactions between the contaminant fractions (As and Sb related fractions) and the individual OTUs, however, suggested the different and more diverse impacts of As comparing to Sb fractions, with more taxa significantly impacted by As species comparing to Sb species. The identification of the keystone taxa in the heavily contaminated samples revealed a group of microbial populations that could survive in both As and Sb heavily contaminated conditions and may providing critical environmental services to the community. Further investigation of these key microbial populations may provide valuable insights on employing these microorganisms for remediation applications.
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Affiliation(s)
- Xiaoxu Sun
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Tianle Kong
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Rui Xu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Baoqin Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Weimin Sun
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China.
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Xue S, Jiang X, Wu C, Hartley W, Qian Z, Luo X, Li W. Microbial driven iron reduction affects arsenic transformation and transportation in soil-rice system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114010. [PMID: 31995782 DOI: 10.1016/j.envpol.2020.114010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 05/25/2023]
Abstract
The microbe-driven iron cycle plays an important role in speciation transformation and migration of arsenic (As) in soil-rice systems. In this study, pot experiments were used to investigate the effect of bacterial iron (Fe) reduction processes in soils on As speciation and migration, as well as on As uptake in soil-rice system. During the rice growth period, pH and electrical conductivity (EC) in soil solutions initially increased and then decreased, with the ranges of 7.4-8.8 and 116.3-820 mS cm-1, respectively. The concentrations of Fe, total As and As(III) showed an increasing trend in the rhizosphere and non-rhizosphere soil solutions with the increasing time. Fe concentrations were significantly positively correlated with total As and As(III) concentrations (***p < 0.001) in the soil solutions. The abundances of the arsenate reductase gene (arsC) and the As(III) S-adenosylmethionine methyltransferase gene (arsM) in rhizosphere soils were higher than those in non-rhizosphere soils, while the abundance of the Fe-reducing bacteria (Geo) showed an opposite trend. Moreover, it showed that the Geo abundance was significantly positively correlated with that of the arsC (***p < 0.001) and arsM (**p < 0.01) genes, respectively. The abundances of Geo, arsC and arsM genes were significantly positively correlated with the concentrations of Fe, total As and As(III) in the soil solutions (*p < 0.05). Moreover, the abundances of arsC and arsM genes were significantly negatively correlated with total As and As(III) in rice grains (*P < 0.05). These results showed that the interaction of bacterial Fe reduction process and radial oxygen loss from roots promoted the reduction and methylation of As, and then decreased As uptake by rice, which provided a theoretical basis for alleviating As pollution in paddy soils.
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Affiliation(s)
- Shengguo Xue
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xingxing Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Chuan Wu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - William Hartley
- Crop and Environment Sciences Department, Harper Adams University, Newport, Shropshire, TF10 8NB, United Kingdom
| | - Ziyan Qian
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xinghua Luo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Waichin Li
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong Special Administrative Region
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26
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Yang Y, Hu H, Fu Q, Xing Z, Chen X, Zhu J. Comparative effects on arsenic uptake between iron (hydro)oxides on root surface and rhizosphere of rice in an alkaline paddy soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:6995-7004. [PMID: 31883069 DOI: 10.1007/s11356-019-07401-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Abstract
The iron (Fe) (hydro)oxides deposited around rice roots play an important role in arsenic (As) sequestration in paddy soils, but there is no systematic study on the relative importance of Fe (hydro)oxides on root surface and in rhizosphere soil in limiting As bioavailability. Twenty-seven rice genotypes were selected to investigate effects of Fe (hydro)oxides on As uptake by rice in an alkaline paddy soil. Results indicated that the As content was positively correlated with the Fe content on root surface, and most of As (88-97%) was sequestered by poorly crystalline and crystalline Fe (hydro)oxides in the alkaline paddy soil. The As sequestration by Fe (hydro)oxides on root surface (IASroot 16.8-25.0 mg As/(g Fe)) was much higher than that in rhizosphere (IASrhizo 1.4-2.0 mg As/(g Fe)); therefore, in terms of As immobilization, the Fe (hydro)oxides on root surface were more important than that in rhizosphere. However, the As content in brown rice did not have significant correlation with the As content on root surface but was significantly correlated (R2 = 0.43, P < 0.05) with the partition ratio (PRAs = IASroot/IASrhizo) of As sequestration on root surface and in rhizosphere, which suggested that Fe (hydro)oxides on root surface did not play the controlling role in lowering As uptake, and the partition ratio PRAs would be a better indicator to evaluate effects of Fe (hydro)oxides around roots on As uptake by rice.
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Affiliation(s)
- Yongqiang Yang
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hongqing Hu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qingling Fu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Zhiqiang Xing
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xingyu Chen
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jun Zhu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
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Yang C, Ho YN, Makita R, Inoue C, Chien MF. Cupriavidus basilensis strain r507, a toxic arsenic phytoextraction facilitator, potentiates the arsenic accumulation by Pteris vittata. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 190:110075. [PMID: 31881405 DOI: 10.1016/j.ecoenv.2019.110075] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 12/07/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
As a toxic and carcinogenic metalloid, arsenic has posed serious threat to human health. Phytoremediation has emerged as a promising approach to circumvent this problem. Arsenic uptake by Pteris vittata is largely determined by arsenic speciation and mainly occurs via roots; thus, rhizospheric microbial activities may play a key role in arsenic accumulation. The aim of this study was to investigate the potential of arsenic resistant rhizobacteria to enhance arsenic phytoextraction. A total of 49 cultivable rhizobacteria were isolated from the arsenic hyperaccumulating fern, Pteris vittata, and subjected to an initial analysis to identify potentially useful traits for arsenic phytoextraction, such as arsenic resistance and the presence of aioA(aroA)-like (arsenite oxidase-like) gene. Isolated strain r507, named as Cupriavidus basilensis strain r507, was a selected candidate for its outstanding arsenic tolerance, rapid arsenite oxidation ability, and strong colonization to P. vittata. Strain r507 was used in co-cultivation trials with P. vittata in the field for six months. Results showed that the inoculation with strain r507 potentiated As accumulation of P. vittata up to 171%. Molecular analysis confirmed that the inoculation increased the abundance of aioA-like genes in the rhizosphere, which might have facilitated arsenite oxidation and absorption. The findings of this study suggested the feasibility of co-cultivating hyperaccumulators with facilitator bacteria for practical arsenic phytoremediation.
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Affiliation(s)
- Chongyang Yang
- Graduate School of Environmental Studies, Tohoku University, Aramaki, Aoba-ku, 6-6-20 Aoba, Sendai, 980-8579, Japan
| | - Ying-Ning Ho
- Graduate School of Environmental Studies, Tohoku University, Aramaki, Aoba-ku, 6-6-20 Aoba, Sendai, 980-8579, Japan; Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung, 20224, Taiwan
| | - Ryota Makita
- Graduate School of Environmental Studies, Tohoku University, Aramaki, Aoba-ku, 6-6-20 Aoba, Sendai, 980-8579, Japan
| | - Chihiro Inoue
- Graduate School of Environmental Studies, Tohoku University, Aramaki, Aoba-ku, 6-6-20 Aoba, Sendai, 980-8579, Japan
| | - Mei-Fang Chien
- Graduate School of Environmental Studies, Tohoku University, Aramaki, Aoba-ku, 6-6-20 Aoba, Sendai, 980-8579, Japan.
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Kujala K, Besold J, Mikkonen A, Tiirola M, Planer-Friedrich B. Abundant and diverse arsenic-metabolizing microorganisms in peatlands treating arsenic-contaminated mining wastewaters. Environ Microbiol 2020; 22:1572-1587. [PMID: 31984582 PMCID: PMC7187466 DOI: 10.1111/1462-2920.14922] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 01/17/2023]
Abstract
Mining operations produce large quantities of wastewater. At a mine site in Northern Finland, two natural peatlands are used for the treatment of mining‐influenced waters with high concentrations of sulphate and potentially toxic arsenic (As). In the present study, As removal and the involved microbial processes in those treatment peatlands (TPs) were assessed. Arsenic‐metabolizing microorganisms were abundant in peat soil from both TPs (up to 108 cells gdw−1), with arsenate respirers being about 100 times more abundant than arsenite oxidizers. In uninhibited microcosm incubations, supplemented arsenite was oxidized under oxic conditions and supplemented arsenate was reduced under anoxic conditions, while little to no oxidation/reduction was observed in NaN3‐inhibited microcosms, indicating high As‐turnover potential of peat microbes. Formation of thioarsenates was observed in anoxic microcosms. Sequencing of the functional genemarkers aioA (arsenite oxidizers), arrA (arsenate respirers) and arsC (detoxifying arsenate reducers) demonstrated high diversity of the As‐metabolizing microbial community. The microbial community composition differed between the two TPs, which may have affected As removal efficiencies. In the present situation, arsenate reduction is likely the dominant net process and contributes substantially to As removal. Changes in TP usage (e.g. mine closure) with lowered water tables and heightened oxygen availability in peat might lead to re‐oxidation and re‐mobilization of bound arsenite.
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Affiliation(s)
- Katharina Kujala
- Water Resources and Environmental Engineering Research Unit, University of Oulu, Oulu, Finland
| | - Johannes Besold
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
| | - Anu Mikkonen
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Marja Tiirola
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Britta Planer-Friedrich
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
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29
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Contrasting arsenic biogeochemical cycling in two Moroccan alkaline pit lakes. Res Microbiol 2020; 171:28-36. [DOI: 10.1016/j.resmic.2019.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 10/23/2019] [Accepted: 10/23/2019] [Indexed: 11/24/2022]
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Ample Arsenite Bio-Oxidation Activity in Bangladesh Drinking Water Wells: A Bonanza for Bioremediation? Microorganisms 2019; 7:microorganisms7080246. [PMID: 31398879 PMCID: PMC6723331 DOI: 10.3390/microorganisms7080246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/26/2019] [Accepted: 07/31/2019] [Indexed: 11/17/2022] Open
Abstract
Millions of people worldwide are at risk of arsenic poisoning from their drinking water. In Bangladesh the problem extends to rural drinking water wells, where non-biological solutions are not feasible. In serial enrichment cultures of water from various Bangladesh drinking water wells, we found transfer-persistent arsenite oxidation activity under four conditions (aerobic/anaerobic; heterotrophic/autotrophic). This suggests that biological decontamination may help ameliorate the problem. The enriched microbial communities were phylogenetically at least as diverse as the unenriched communities: they contained a bonanza of 16S rRNA gene sequences. These related to Hydrogenophaga, Acinetobacter, Dechloromonas, Comamonas, and Rhizobium/Agrobacterium species. In addition, the enriched microbiomes contained genes highly similar to the arsenite oxidase (aioA) gene of chemolithoautotrophic (e.g., Paracoccus sp. SY) and heterotrophic arsenite-oxidizing strains. The enriched cultures also contained aioA phylotypes not detected in the previous survey of uncultivated samples from the same wells. Anaerobic enrichments disclosed a wider diversity of arsenite oxidizing aioA phylotypes than did aerobic enrichments. The cultivatable chemolithoautotrophic and heterotrophic arsenite oxidizers are of great interest for future in or ex-situ arsenic bioremediation technologies for the detoxification of drinking water by oxidizing arsenite to arsenate that should then precipitates with iron oxides. The microbial activities required for such a technology seem present, amplifiable, diverse and hence robust.
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Dunivin TK, Yeh SY, Shade A. A global survey of arsenic-related genes in soil microbiomes. BMC Biol 2019; 17:45. [PMID: 31146755 PMCID: PMC6543643 DOI: 10.1186/s12915-019-0661-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 05/02/2019] [Indexed: 01/21/2023] Open
Abstract
Background Environmental resistomes include transferable microbial genes. One important resistome component is resistance to arsenic, a ubiquitous and toxic metalloid that can have negative and chronic consequences for human and animal health. The distribution of arsenic resistance and metabolism genes in the environment is not well understood. However, microbial communities and their resistomes mediate key transformations of arsenic that are expected to impact both biogeochemistry and local toxicity. Results We examined the phylogenetic diversity, genomic location (chromosome or plasmid), and biogeography of arsenic resistance and metabolism genes in 922 soil genomes and 38 metagenomes. To do so, we developed a bioinformatic toolkit that includes BLAST databases, hidden Markov models and resources for gene-targeted assembly of nine arsenic resistance and metabolism genes: acr3, aioA, arsB, arsC (grx), arsC (trx), arsD, arsM, arrA, and arxA. Though arsenic-related genes were common, they were not universally detected, contradicting the common conjecture that all organisms have them. From major clades of arsenic-related genes, we inferred their potential for horizontal and vertical transfer. Different types and proportions of genes were detected across soils, suggesting microbial community composition will, in part, determine local arsenic toxicity and biogeochemistry. While arsenic-related genes were globally distributed, particular sequence variants were highly endemic (e.g., acr3), suggesting dispersal limitation. The gene encoding arsenic methylase arsM was unexpectedly abundant in soil metagenomes (median 48%), suggesting that it plays a prominent role in global arsenic biogeochemistry. Conclusions Our analysis advances understanding of arsenic resistance, metabolism, and biogeochemistry, and our approach provides a roadmap for the ecological investigation of environmental resistomes. Electronic supplementary material The online version of this article (10.1186/s12915-019-0661-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Taylor K Dunivin
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, 48824, USA.,Environmental and Integrative Toxicological Sciences Doctoral Program, Michigan State University, East Lansing, MI, 48824, USA
| | - Susanna Y Yeh
- Institute for Cyber-Enabled Research, Michigan State University, East Lansing, MI, 48824, USA
| | - Ashley Shade
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, 48824, USA. .,Program in Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, 48824, USA. .,Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, 48824, USA. .,Plant Resilience Institute, Michigan State University, East Lansing, MI, 48834, USA.
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Crognale S, Casentini B, Amalfitano S, Fazi S, Petruccioli M, Rossetti S. Biological As(III) oxidation in biofilters by using native groundwater microorganisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:93-102. [PMID: 30227294 DOI: 10.1016/j.scitotenv.2018.09.176] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/13/2018] [Accepted: 09/13/2018] [Indexed: 06/08/2023]
Abstract
Arsenic (As) contamination in drinking water represents a worldwide threat to human health. During last decades, the exploitation of microbial As-transformations has been proposed for bioremediation applications. Among biological methods for As-contaminated water treatment, microbial As(III)-oxidation is one of the most promising approaches since it can be coupled to commonly used adsorption removal technologies, without requiring the addition of chemicals and producing toxic by-products. Despite the As(III) oxidation capability has been described in several bacterial pure or enrichment cultures, very little is known about the real potentialities of this process when mixed microbial communities, naturally occurring in As contaminated waters, are used. This study highlighted the contribution of native groundwater bacteria to As(III)-oxidation in biofilters, under conditions suitable for a household-scale treatment system. This work elucidated the influence of a variety of experimental conditions (i.e., various filling materials, flow rates, As(III) inflow concentration, As(III):As(V) ratio, filter volumes) on the microbially-mediated As(III)-oxidation process in terms of oxidation efficiency and rate. The highest oxidation efficiencies (up to 90% in 3 h) were found on coarse sand biofilters treating total initial As concentration of 100 μg L-1. The detailed microbial characterization of the As(III) oxidizing biofilms revealed the occurrence of several OTUs affiliated with families known to oxidize As(III) (e.g., Burkholderiaceae, Comamonadaceae, Rhodobacteraceae, Xanthomonadaceae). Furthermore, As-related functional genes increased in biofilter systems in line with the observed oxidative performances.
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Affiliation(s)
- Simona Crognale
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Via Salaria, km 29.300, Monterotondo, Rome 00015, Italy
| | - Barbara Casentini
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Via Salaria, km 29.300, Monterotondo, Rome 00015, Italy
| | - Stefano Amalfitano
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Via Salaria, km 29.300, Monterotondo, Rome 00015, Italy
| | - Stefano Fazi
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Via Salaria, km 29.300, Monterotondo, Rome 00015, Italy
| | - Maurizio Petruccioli
- Department for Innovation in Agroforestry and Biological systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - Simona Rossetti
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Via Salaria, km 29.300, Monterotondo, Rome 00015, Italy.
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Zeng XC, He Z, Chen X, Cao QAD, Li H, Wang Y. Effects of arsenic on the biofilm formations of arsenite-oxidizing bacteria. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 165:1-10. [PMID: 30173020 DOI: 10.1016/j.ecoenv.2018.08.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
Arsenite-oxidizing bacteria (AOB) play a key role in the biogeochemical cycle of arsenic in the environment, and are used for the bioremediation of As contaminated groundwater; however, it is not yet known about how arsenic affects biofilm formations of AOB, and how biofilm formations affect bacterial arsenite-oxidizing activities. To address these issues, we isolated seven novel AOB strains from the arsenic-contaminated soils. They can completely oxidize 1.0 mM As(III) in 22-60 h. Their arsenite oxidase sequences show 43-99% identities to those of other known AOB. Strains Cug1, Cug2, Cug3, Cug4, and Cug6 are able to form biofilms with thickness of 15-95 µm, whereas Cug8 and Cug9 cannot form biofilms. It is interesting to see that arsenite inhibited the biofilm formations of heterotrophic AOB strains, but promoted the biofilm formations of autotrophic strains in a concentration-dependent manner. The arsenite-oxidizing rates of Cug1 and Cug4 biofilms are 31.6% and 27.6% lower than those of their suspension cultures, whereas the biofilm activities of other strains are similar to those of their suspension cultures. The biofilm formation significantly promoted the bacterial resistance to arsenic. This work is the first report on the complex correlations among environmental arsenic, bacterial biofilm formations and bacterial arsenite-oxidizing activities. The data highlight the diverse lifestyle of different AOB under arsenic stress, and provide essential knowledge for the screening of efficient AOB strains used for constructions of bioreactors.
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Affiliation(s)
- Xian-Chun Zeng
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430070, People's Republic of China.
| | - Zhong He
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430070, People's Republic of China
| | - Xiaoming Chen
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430070, People's Republic of China
| | - Qian A D Cao
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430070, People's Republic of China
| | - Hao Li
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430070, People's Republic of China
| | - Yanxin Wang
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430070, People's Republic of China
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Lin Z, Wang X, Wu X, Liu D, Yin Y, Zhang Y, Xiao S, Xing B. Nitrate reduced arsenic redox transformation and transfer in flooded paddy soil-rice system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 243:1015-1025. [PMID: 30248601 DOI: 10.1016/j.envpol.2018.09.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/19/2018] [Accepted: 09/10/2018] [Indexed: 06/08/2023]
Abstract
Inhibition of reductive transformation of arsenic (As) in flooded paddy soils is of fundamental importance for mitigating As transfer into food chain. Anaerobic arsenite (As(III)) oxidizers maintain As in less mobile fraction under nitrate-reducing conditions. In this study, we explored the dynamic profile of As speciation in porewater and As distribution among the pools of differential bioavailability in soil solid phase with and without nitrate treatment. In parallel, the abundance and diversity of As(III) oxidase gene (aioA) in flooded paddy soil with nitrate amendment was examined by quantitative PCR and aioA gene clone library. Furthermore, the impact of nitrate on As accumulation and speciation in rice seedlings was unraveled. With nitrate addition (25 mmol NO3- kg-1 soil), porewater As(III) was maintained at a consistently negligible concentration in the flooded paddy soil and the reductive dissolution of As-bearing Fe oxides/hydroxides was significantly restrained. Specifically, nitrate amendment kept 81% of total soil As in the nonlabile fraction with arsenate (As(V)) dominating after 30 days of flooding, compared to only 61% in the unamended control. Nitrate treatment induced 4-fold higher abundance of aioA gene, which belonged to domains of bacteria and archaea under the classes α-Proteobacteria (6%), ß-Proteobacteria (90%), ɣ-Proteobacteria (2%), and Thermoprotei (2%). By nitrate addition, As accumulation in rice seedlings was decreased by 85% with simultaneously elevated As(V) ratio in rice plant relative to control after 22 days of growth under flooded conditions. These results highlight that nitrate application can serve an efficient method to inhibit reductive dissolution of As in flooded paddy soils, and hence diminish As uptake by rice under anaerobic growing conditions.
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Affiliation(s)
- Zhaojun Lin
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Xin Wang
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States.
| | - Xin Wu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, 410125, China
| | - Daihuan Liu
- Hunan Yonker Environmental Protection Research Institute Co., Ltd., Changsha, 410330, China
| | - Yulong Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, 410125, China
| | - Yue Zhang
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Sha Xiao
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States
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Isolation and characterization of aerobic, culturable, arsenic-tolerant bacteria from lead-zinc mine tailing in southern China. World J Microbiol Biotechnol 2018; 34:177. [PMID: 30446973 DOI: 10.1007/s11274-018-2557-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/07/2018] [Indexed: 10/27/2022]
Abstract
Bioremediation of arsenic (As) pollution is an important environmental issue. The present investigation was carried out to isolate As-resistant novel bacteria and characterize their As transformation and tolerance ability. A total of 170 As-resistant bacteria were isolated from As-contaminated soils at the Kangjiawan lead-zinc tailing mine, located in Hunan Province, southern China. Thirteen As-resistant isolates were screened by exposure to 260 mM Na2HAsO4·7H2O, most of which showed a very high level of resistance to As5+ (MIC ≥ 600 mM) and As3+ (MIC ≥ 10 mM). Sequence analysis of 16S rRNA genes indicated that the 13 isolates tested belong to the phyla Firmicutes, Proteobacteria and Actinobacteria, and these isolates were assigned to eight genera, Bacillus, Williamsia, Citricoccus, Rhodococcus, Arthrobacter, Ochrobactrum, Pseudomonas and Sphingomonas. Genes involved in As resistance were present in 11 of the isolates. All 13 strains transformed As (1 mM); the oxidation and reduction rates were 5-30% and 10-51.2% within 72 h, respectively. The rates of oxidation by Bacillus sp. Tw1 and Pseudomonas spp. Tw224 peaked at 42.48 and 34.94% at 120 h, respectively. For Pseudomonas spp. Tw224 and Bacillus sp. Tw133, the highest reduction rates were 52.01% at 48 h and 48.66% at 144 h, respectively. Our findings will facilitate further research into As metabolism and bioremediation of As pollution by genome sequencing and genes modification.
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Gut microbiome disruption altered the biotransformation and liver toxicity of arsenic in mice. Arch Toxicol 2018; 93:25-35. [PMID: 30357543 DOI: 10.1007/s00204-018-2332-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 10/10/2018] [Indexed: 12/14/2022]
Abstract
The mammalian gut microbiome (GM) plays a critical role in xenobiotic biotransformation and can profoundly affect the toxic effects of xenobiotics. Previous in vitro studies have demonstrated that gut bacteria have the capability to metabolize arsenic (As); however, the specific roles of the gut microbiota in As metabolism in vivo and the toxic effects of As are largely unknown. Here, we administered sodium arsenite to conventionally raised mice (with normal microbiomes) and GM-disrupted mice with antibiotics to investigate the role of the gut microbiota in As biotransformation and its toxicity. We found that the urinary total As levels of GM-disrupted mice were much higher, but the fecal total As levels were lower, than the levels in the conventionally raised mice. In vitro experiments, in which the GM was incubated with As, also demonstrated that the gut bacteria could adsorb or take up As and thus reduce the free As levels in the culture medium. With the disruption of the gut microbiota, arsenic biotransformation was significantly perturbed. Of note, the urinary monomethylarsonic acid/dimethylarsinic acid ratio, a biomarker of arsenic metabolism and toxicity, was markedly increased. Meanwhile, the expression of genes of one-carbon metabolism, including folr2, bhmt, and mthfr, was downregulated, and the liver S-adenosylmethionine (SAM) levels were significantly decreased in the As-treated GM-disrupted mice only. Moreover, As exposure altered the expression of genes of the p53 signaling pathway, and the expression of multiple genes associated with hepatocellular carcinoma (HCC) was also changed in the As-treated GM-disrupted mice only. Collectively, disruption of the GM enhances the effect of As on one-carbon metabolism, which could in turn affect As biotransformation. GM disruption also increases the toxic effects of As and may increase the risk of As-induced HCC in mice.
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Thouin H, Battaglia-Brunet F, Norini MP, Le Forestier L, Charron M, Dupraz S, Gautret P. Influence of environmental changes on the biogeochemistry of arsenic in a soil polluted by the destruction of chemical weapons: A mesocosm study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:216-226. [PMID: 29426144 DOI: 10.1016/j.scitotenv.2018.01.158] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/16/2018] [Accepted: 01/16/2018] [Indexed: 06/08/2023]
Abstract
Thermal destruction of chemical munitions from World War I led to the formation of a heavily contaminated residue that contains an unexpected mineral association in which a microbial As transformation has been observed. A mesocosm study was conducted to assess the impact of water saturation episodes and input of bioavailable organic matter (OM) on pollutant behavior in relation to biogeochemical parameters. Over a period of about eight (8) months, the contaminated soil was subjected to cycles of dry and wet periods corresponding to water table level variations. After the first four (4) months, fragmented litter from the nearby forest was placed on top of the soil. The mesocosm solid phase was sampled by three rounds of coring: at the beginning of the experiment, after four (4) months (before the addition of OM), and at the end of the experiment. Scanning electron microscopy coupled to energy dispersive X-ray spectroscopy observations showed that an amorphous phase, which was the primary carrier of As, Zn, and Cu, was unstable under water-saturated conditions and released a portion of the contaminants in solution. Precipitation of a lead arsenate chloride mineral, mimetite, in soils within the water saturated level caused the immobilization of As and Pb. Mimetite is a durable trap because of its large stability domain; however, this precipitation was limited by a low Pb concentration inducing that high amounts of As remained in solution. The addition of forest litter modified the quantities and qualities of soil OM. Microbial As transformation was affected by the addition of OM, which increased the concentration of both As(III)-oxidizing and As(V)-reducing microorganisms. The addition of OM negatively impacted the As(III) oxidizing rate, however As(III) oxidation was still the dominant reaction in accordance with the formation of arsenate-bearing minerals.
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Affiliation(s)
- Hugues Thouin
- BRGM, 3 avenue Claude Guillemin, 45060 Orléans, France; Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France.
| | - Fabienne Battaglia-Brunet
- BRGM, 3 avenue Claude Guillemin, 45060 Orléans, France; Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
| | - Marie-Paule Norini
- Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
| | - Lydie Le Forestier
- Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
| | | | | | - Pascale Gautret
- Université d'Orléans, ISTO, UMR 7327, 45071 Orléans, France; CNRS, ISTO, UMR 7327, 45071 Orléans, France; BRGM, ISTO, UMR 7327, BP 36009, 45060 Orléans, France
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Kataoka T, Mitsunobu S, Hamamura N. Influence of the Chemical Form of Antimony on Soil Microbial Community Structure and Arsenite Oxidation Activity. Microbes Environ 2018; 33:214-221. [PMID: 29887548 PMCID: PMC6031390 DOI: 10.1264/jsme2.me17182] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
In the present study, the influence of the co-contamination with various chemical forms of antimony (Sb) with arsenite (As[III]) on soil microbial communities was investigated. The oxidation of As(III) to As(V) was monitored in soil columns amended with As(III) and three different chemical forms of Sb: antimony potassium tartrate (Sb[III]-tar), antimony(III) oxide (Sb2O3), and potassium antimonate (Sb[V]). Soil microbial communities were examined qualitatively and quantitatively using 16S rDNA- and arsenite oxidase gene (aioA)-targeted analyses. Microbial As(III) oxidation was detected in all soil columns and 90–100% of added As(III) (200 μmol L−1) was oxidized to As(V) in 9 d, except in the Sb(III)-tar co-amendments that only oxidized 30%. 16S rDNA- and aioA-targeted analyses showed that the presence of different Sb chemical forms significantly affected the selection of distinct As(III)-oxidizing bacterial populations. Most of the 16S rRNA genes detected in soil columns belonged to Betaproteobacteria and Gammaproteobacteria, and some sequences were closely related to those of known As(III) oxidizers. Co-amendments with Sb(III)-tar and high concentrations of Sb2O3 significantly increased the ratios of aioA-possessing bacterial populations, indicating the enrichment of As(III) oxidizers resistant to As and Sb toxicity. Under Sb co-amendment conditions, there was no correlation between aioA gene abundance and the rates of As(III) oxidation. Collectively, these results demonstrated that the presence of different Sb chemical forms imposed a strong selective pressure on the soil bacterial community and, thus, the co-existing metalloid is an important factor affecting the redox transformation of arsenic in natural environments.
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Affiliation(s)
- Takafumi Kataoka
- Faculty of Marine Science and Technology, Fukui Prefectural University.,Center for Marine Environmental Studies (CMES), Ehime University
| | - Satoshi Mitsunobu
- Department of Bioresources, Faculty of Agriculture, Ehime University
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Leon CG, Moraga R, Valenzuela C, Gugliandolo C, Lo Giudice A, Papale M, Vilo C, Dong Q, Smith CT, Rossello-Mora R, Yañez J, Campos VL. Effect of the natural arsenic gradient on the diversity and arsenic resistance of bacterial communities of the sediments of Camarones River (Atacama Desert, Chile). PLoS One 2018; 13:e0195080. [PMID: 29715297 PMCID: PMC5929503 DOI: 10.1371/journal.pone.0195080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 03/17/2018] [Indexed: 12/20/2022] Open
Abstract
Arsenic (As), a highly toxic metalloid, naturally present in Camarones River (Atacama Desert, Chile) is a great health concern for the local population and authorities. In this study, the taxonomic and functional characterization of bacterial communities associated to metal-rich sediments from three sites of the river (sites M1, M2 and M3), showing different arsenic concentrations, were evaluated using a combination of approaches. Diversity of bacterial communities was evaluated by Illumina sequencing. Strains resistant to arsenic concentrations varying from 0.5 to 100 mM arsenite or arsenate were isolated and the presence of genes coding for enzymes involved in arsenic oxidation (aio) or reduction (arsC) investigated. Bacterial communities showed a moderate diversity which increased as arsenic concentrations decreased along the river. Sequences of the dominant taxonomic groups (abundances ≥1%) present in all three sites were affiliated to Proteobacteria (range 40.3–47.2%), Firmicutes (8.4–24.8%), Acidobacteria (10.4–17.1%), Actinobacteria (5.4–8.1%), Chloroflexi (3.9–7.5%), Planctomycetes (1.2–5.3%), Gemmatimonadetes (1.2–1.5%), and Nitrospirae (1.1–1.2%). Bacterial communities from sites M2 and M3 showed no significant differences in diversity between each other (p = 0.9753) but they were significantly more diverse than M1 (p<0.001 and p<0.001, respectively). Sequences affiliated with Proteobacteria, Firmicutes, Acidobacteria, Chloroflexi and Actinobacteria at M1 accounted for more than 89% of the total classified bacterial sequences present but these phyla were present in lesser proportions in M2 and M3 sites. Strains isolated from the sediment of sample M1, having the greatest arsenic concentration (498 mg kg-1), showed the largest percentages of arsenic oxidation and reduction. Genes aio were more frequently detected in isolates from M1 (54%), whereas arsC genes were present in almost all isolates from all three sediments, suggesting that bacterial communities play an important role in the arsenic biogeochemical cycle and detoxification of arsenical compounds. Overall, results provide further knowledge on the microbial diversity of arsenic contaminated fresh-water sediments.
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Affiliation(s)
- Carla G. Leon
- Environmental Microbiology Laboratory, Department of Microbiology, Faculty of Biological Sciences, University of Concepción, Concepción, Chile
| | - Ruben Moraga
- Microbiology Laboratory, Faculty of Renewable Natural Resources, Arturo Prat University, Iquique, Chile
| | - Cristian Valenzuela
- Environmental Microbiology Laboratory, Department of Microbiology, Faculty of Biological Sciences, University of Concepción, Concepción, Chile
| | - Concetta Gugliandolo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Angelina Lo Giudice
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
- Institute for the Coastal Marine Environment, National Research Council (IAMC-CNR), Messina, Italy
| | - Maria Papale
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Claudia Vilo
- Environmental Microbiology Laboratory, Department of Microbiology, Faculty of Biological Sciences, University of Concepción, Concepción, Chile
| | - Qunfeng Dong
- Center for Biomedical Informatics, Department of Public Health Sciences, Loyola University Chicago, Maywood, Illinois, United States of America
| | - Carlos T. Smith
- Environmental Microbiology Laboratory, Department of Microbiology, Faculty of Biological Sciences, University of Concepción, Concepción, Chile
| | - Ramon Rossello-Mora
- Marine Microbiology Group, Institut Mediterrani d’Estudis Avancats (CSIC-UIB), Esporles, Spain
| | - Jorge Yañez
- Department of Analytical and Inorganic Chemistry, Faculty of Chemical Sciences, University of Concepcion, Concepcion, Chile
| | - Victor L. Campos
- Environmental Microbiology Laboratory, Department of Microbiology, Faculty of Biological Sciences, University of Concepción, Concepción, Chile
- * E-mail:
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Oremland RS, Saltikov CW, Stolz JF, Hollibaugh JT. Autotrophic microbial arsenotrophy in arsenic-rich soda lakes. FEMS Microbiol Lett 2018; 364:3940223. [PMID: 28859313 DOI: 10.1093/femsle/fnx146] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/07/2017] [Indexed: 01/15/2023] Open
Abstract
A number of prokaryotes are capable of employing arsenic oxy-anions as either electron acceptors [arsenate; As(V)] or electron donors [arsenite; As(III)] to sustain arsenic-dependent growth ('arsenotrophy'). A subset of these microorganisms function as either chemoautotrophs or photoautotrophs, whereby they gain sufficient energy from their redox metabolism of arsenic to completely satisfy their carbon needs for growth by autotrophy, that is the fixation of inorganic carbon (e.g. HCO3-) into their biomass. Here we review what has been learned of these processes by investigations we have undertaken in three soda lakes of the western USA and from the physiological characterizations of the relevant bacteria, which include the critical genes involved, such as respiratory arsenate reductase (arrA) and the discovery of its arsenite-oxidizing counterpart (arxA). When possible, we refer to instances of similar process occurring in other, less extreme ecosystems and by microbes other than haloalkaliphiles.
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Affiliation(s)
| | - Chad W Saltikov
- Department of Microbiology and Environmental Toxicology, University of California Santa Cruz, CA 95064, USA
| | - John F Stolz
- Department of Biological Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - James T Hollibaugh
- Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA
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Tapase SR, Kodam KM. Assessment of arsenic oxidation potential of Microvirga indica S-MI1b sp. nov. in heavy metal polluted environment. CHEMOSPHERE 2018; 195:1-10. [PMID: 29241075 DOI: 10.1016/j.chemosphere.2017.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 12/01/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
Arsenic oxidizing α-proteobacterial strain Microvirga indica S-MI1b sp. nov. was isolated from metal industry soil and has the ability to oxidize 15 mM of arsenite [As(III)] completely in 39 h. The strain S-MI1b resists to different heavy metals and it oxidizes arsenite in presence of Li, Pb, Hg, Sb(III), Cd, Cr(VI), Ni, and exhibited growth inhibitory effect in presence of Hg, Cu, and Cd at higher concentration. The morphology of Microvirga indica S-MI1b changed in presence of heavy metals however there was no accumulation of As(III) in the cells. The study showed that Microvirga indica S-MI1b can oxidize arsenite at broad pH ranges from 4.0 to 9.0 with optimum at pH 7.0. The kinetic studies of arsenite oxidation by strain S-MI1b signified that it has greater affinity towards As(III). The arsenite oxidase activity of cells grown in presence of Li and Cr(VI) supported the cell culture studies. This is first report on biotransformation of arsenite by Microvirga genus and also arsenite oxidation in presence of heavy metals.
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Affiliation(s)
- Savita R Tapase
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | - Kisan M Kodam
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India.
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Ghosh D, Bhadury P. Microbial Cycling of Arsenic in the Aquifers of Bengal Delta Plains (BDP). ADVANCES IN SOIL MICROBIOLOGY: RECENT TRENDS AND FUTURE PROSPECTS 2018. [DOI: 10.1007/978-981-10-6178-3_5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Crognale S, Zecchin S, Amalfitano S, Fazi S, Casentini B, Corsini A, Cavalca L, Rossetti S. Phylogenetic Structure and Metabolic Properties of Microbial Communities in Arsenic-Rich Waters of Geothermal Origin. Front Microbiol 2017; 8:2468. [PMID: 29312179 PMCID: PMC5732945 DOI: 10.3389/fmicb.2017.02468] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 11/28/2017] [Indexed: 11/16/2022] Open
Abstract
Arsenic (As) is a toxic element released in aquatic environments by geogenic processes or anthropic activities. To counteract its toxicity, several microorganisms have developed mechanisms to tolerate and utilize it for respiratory metabolism. However, still little is known about identity and physiological properties of microorganisms exposed to natural high levels of As and the role they play in As transformation and mobilization processes. This work aims to explore the phylogenetic composition and functional properties of aquatic microbial communities in As-rich freshwater environments of geothermal origin and to elucidate the key microbial functional groups that directly or indirectly may influence As-transformations across a natural range of geogenic arsenic contamination. Distinct bacterial communities in terms of composition and metabolisms were found. Members of Proteobacteria, affiliated to Alpha- and Betaproteobacteria were mainly retrieved in groundwaters and surface waters, whereas Gammaproteobacteria were the main component in thermal waters. Most of the OTUs from thermal waters were only distantly related to 16S rRNA gene sequences of known taxa, indicating the occurrence of bacterial biodiversity so far unexplored. Nitrate and sulfate reduction and heterotrophic As(III)-oxidization were found as main metabolic traits of the microbial cultivable fraction in such environments. No growth of autotrophic As(III)-oxidizers, autotrophic and heterotrophic As(V)-reducers, Fe-reducers and oxidizers, Mn-reducers and sulfide oxidizers was observed. The ars genes, involved in As(V) detoxifying reduction, were found in all samples whereas aioA [As(III) oxidase] and arrA genes [As(V) respiratory reductase] were not found. Overall, we found that As detoxification processes prevailed over As metabolic processes, concomitantly with the intriguing occurrence of novel thermophiles able to tolerate high levels of As.
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Affiliation(s)
- Simona Crognale
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Sarah Zecchin
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente (DeFENS), Università degli Studi di Milano, Milan, Italy
| | - Stefano Amalfitano
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Stefano Fazi
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Barbara Casentini
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Anna Corsini
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente (DeFENS), Università degli Studi di Milano, Milan, Italy
| | - Lucia Cavalca
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente (DeFENS), Università degli Studi di Milano, Milan, Italy
| | - Simona Rossetti
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
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Tapase SR, Mawlankar RB, Sundharam SS, Krishnamurthi S, Dastager SG, Kodam KM. Microvirga indica sp. nov., an arsenite-oxidizing Alphaproteobacterium, isolated from metal industry waste soil. Int J Syst Evol Microbiol 2017; 67:3525-3531. [PMID: 28867001 DOI: 10.1099/ijsem.0.002157] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel Gram-stain-negative bacterium, strain S-MI1bT, belonging to the genus Microvirga was isolated from a metal industry waste soil sample in Pirangut village, Pune District, Maharashtra, India. Cells were non-spore-forming, small rod-shapes, motile and strictly aerobic with light-pink colonies. The strain grew in 0-7.0 % (w/v) NaCl and at 25-45 °C, with optimal growth at 40 °C. The predominant fatty acids detected were summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c) and C19 : 0 cyclo ω8c. The predominant isoprenoid quinone was Q-10. The G+C content was 67.2 mol% and DNA-DNA relatedness values between strain S-MI1bTand Microvirga subterranea DSM 14364T and Microvirgaaerophila 5420S-12T were 53.9 and 54.8 %, respectively. Phylogenetic analysis, based on 16S rRNA gene sequences, indicated that strain S-MI1bT is a member of the genus Microvirga, with greatest sequence similarities of 97.7 and 97.4 % with M. subterranea DSM 14364T and M.aerophila 5420S-12T, respectively. Phylogenetic analysis showed that strain S-MI1bT forms a clade with the type strain of M. subterranea DSM 14364T, and was readily distinguishable from it due to various phenotypic characteristics. The combination of genotypic and phenotypic data suggests that the isolate represents a novel species of the genus Microvirga, for which the name Microvirga indica sp. nov. is proposed. The type strain is S-MI1bT (=NCIM-5595T=KACC 18792T=BCRC 80972T).
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Affiliation(s)
- Savita R Tapase
- Division of Biochemistry, Department of Chemistry, Savitribai Phule Pune University, Pune-411007, Maharashtra, India
| | - Rahul B Mawlankar
- NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune-411008, Maharashtra, India
| | - Shiva S Sundharam
- Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160036, India
| | - Srinivasan Krishnamurthi
- Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160036, India
| | - Syed G Dastager
- NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune-411008, Maharashtra, India
| | - Kisan M Kodam
- Division of Biochemistry, Department of Chemistry, Savitribai Phule Pune University, Pune-411007, Maharashtra, India
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Nguyen VK, Tran HT, Park Y, Yu J, Lee T. Microbial arsenite oxidation with oxygen, nitrate, or an electrode as the sole electron acceptor. ACTA ACUST UNITED AC 2017; 44:857-868. [DOI: 10.1007/s10295-017-1910-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 01/29/2017] [Indexed: 10/20/2022]
Abstract
Abstract
The purpose of this study was to identify bacteria that can perform As(III) oxidation for environmental bioremediation. Two bacterial strains, named JHS3 and JHW3, which can autotrophically oxidize As(III)–As(V) with oxygen as an electron acceptor, were isolated from soil and water samples collected in the vicinity of an arsenic-contaminated site. According to 16S ribosomal RNA sequence analysis, both strains belong to the ɤ-Proteobacteria class and share 99% sequence identity with previously described strains. JHS3 appears to be a new strain of the Acinetobacter genus, whereas JHW3 is likely to be a novel strain of the Klebsiella genus. Both strains possess the aioA gene encoding an arsenite oxidase and are capable of chemolithoautotrophic growth in the presence of As(III) up to 10 mM as a primary electron donor. Cell growth and As(III) oxidation rate of both strains were significantly enhanced during cultivation under heterotrophic conditions. Under anaerobic conditions, only strain JHW3 oxidized As(III) using nitrate or a solid-state electrode of a bioelectrochemical system as a terminal electron acceptor. Kinetic studies of As(III) oxidation under aerobic condition demonstrated a higher V max and K m from strain JHW3 than strain JHS3. This study indicated the potential application of strain JHW3 for remediation of subsurface environments contaminated with arsenic.
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Affiliation(s)
- Van Khanh Nguyen
- 0000 0001 2218 7142 grid.255166.3 Department of Environmental Engineering Dong-a University 49315 Busan Republic of Korea
| | - Huong T Tran
- 0000 0001 0719 8572 grid.262229.f Department of Molecular Biology Pusan National University 46241 Busan Republic of Korea
| | - Younghyun Park
- 0000 0001 0719 8572 grid.262229.f Department of Civil and Environmental Engineering Pusan National University No. 2 Busandaehak-ro 63beon-gil, Geumjeong-gu 46241 Busan Republic of Korea
| | - Jaecheul Yu
- 0000 0001 0719 8572 grid.262229.f Department of Civil and Environmental Engineering Pusan National University No. 2 Busandaehak-ro 63beon-gil, Geumjeong-gu 46241 Busan Republic of Korea
| | - Taeho Lee
- 0000 0001 0719 8572 grid.262229.f Department of Civil and Environmental Engineering Pusan National University No. 2 Busandaehak-ro 63beon-gil, Geumjeong-gu 46241 Busan Republic of Korea
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Edwardson CF, Hollibaugh JT. Metatranscriptomic analysis of prokaryotic communities active in sulfur and arsenic cycling in Mono Lake, California, USA. ISME JOURNAL 2017; 11:2195-2208. [PMID: 28548659 PMCID: PMC5607362 DOI: 10.1038/ismej.2017.80] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 04/04/2017] [Accepted: 04/18/2017] [Indexed: 11/09/2022]
Abstract
This study evaluates the transcriptionally active, dissimilatory sulfur- and arsenic-cycling components of the microbial community in alkaline, hypersaline Mono Lake, CA, USA. We sampled five depths spanning the redox gradient (10, 15, 18, 25 and 31 m) during maximum thermal stratification. We used custom databases to identify transcripts of genes encoding complex iron-sulfur molybdoenzyme (CISM) proteins, with a focus on arsenic (arrA, aioA and arxA) and sulfur cycling (dsrA, aprA and soxB), and assigned them to taxonomic bins. We also report on the distribution of transcripts related to the ars arsenic detoxification pathway. Transcripts from detoxification pathways were not abundant in oxic surface waters (10 m). Arsenic cycling in the suboxic and microaerophilic zones of the water column (15 and 18 m) was dominated by arsenite-oxidizing members of the Gammaproteobacteria most closely affiliated with Thioalkalivibrio and Halomonas, transcribing arxA. We observed a transition to arsenate-reducing bacteria belonging to the Deltaproteobacteria and Firmicutes transcribing arsenate reductase (arrA) in anoxic bottom waters of the lake (25 and 31 m). Sulfur cycling at 15 and 18 m was dominated by Gammaproteobacteria (Thioalkalivibrio and Thioalkalimicrobium) oxidizing reduced S species, with a transition to sulfate-reducing Deltaproteobacteria at 25 and 31 m. Genes related to arsenic and sulfur oxidation from Thioalkalivibrio were more highly transcribed at 15 m relative to other depths. Our data highlight the importance of Thioalkalivibrio to arsenic and sulfur biogeochemistry in Mono Lake and identify new taxa that appear capable of transforming arsenic.
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Affiliation(s)
- Christian F Edwardson
- Department of Marine Sciences, University of Georgia, Athens, GA, USA.,Department of Microbiology, University of Georgia, Athens, GA, USA
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Moon HS, Kim BA, Hyun SP, Lee YH, Shin D. Effect of the redox dynamics on microbial-mediated As transformation coupled with Fe and S in flow-through sediment columns. JOURNAL OF HAZARDOUS MATERIALS 2017; 329:280-289. [PMID: 28183017 DOI: 10.1016/j.jhazmat.2017.01.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 12/30/2016] [Accepted: 01/20/2017] [Indexed: 06/06/2023]
Abstract
Arsenic (As) biogeochemistry coupled with iron (Fe) and sulfur (S) was studied using columns packed with As(V)-contaminated sediments under two phases: a reduction phase followed by an oxidation phase. During the reduction phase, four identical columns inoculated with G. sulfurreducens were stimulated with 3mM acetate for 60days. The As(III) in the effluent rapidly increased then gradually decreased. The Fe(II) and sulfate concentration indicated ferrous sulfide precipitation inside the column after day 14 and X-ray absorption near edge structure spectra showed that As(III) was enriched at the column outlet. The genera Desulfosporosinus and Anaeromyxobacter as well as the Geobacter inoculum played a primary role in As reduction. During the oxidation phase, dissolved oxygen was consumed by heterotrophic aerobes belonging to the phylum Cloroflexi in the column with acetate, resulting in more As in the effluent. When only nitrate was injected, sulfur-oxidizing bacteria such as Thiobacillus thioparus instantly oxidized the sulfide formed during the first phase, resulting in less As(V) in the aqueous phase compared to the column with dissolved oxygen alone. This study showed that redox gradients and dynamics linked to Fe and S biogeochemistry have an important role in controlling As mobility in subsurface environments.
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Affiliation(s)
- Hee Sun Moon
- Groundwater Department, Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea; Department of Mineral and Groundwater Resources, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea.
| | - Bo-A Kim
- Groundwater Department, Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea
| | - Sung Pil Hyun
- Groundwater Department, Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea; Department of Mineral and Groundwater Resources, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Yoon-Ho Lee
- Groundwater Department, Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea
| | - Doyun Shin
- Unban Mine Department, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea; Department of Resource Recycling Engineering, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
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Karn SK, Pan X, Jenkinson IR. Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl 3 amendment. 3 Biotech 2017; 7:50. [PMID: 28444594 DOI: 10.1007/s13205-017-0681-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 02/27/2017] [Indexed: 10/19/2022] Open
Abstract
A combination of biological and chemical methods was applied in the present study to evaluate the removal of arsenic (As) from contaminated soil. The treatment involved As-oxidizing microbes aimed of transforming the more toxic As (III) to less toxic As (V) in the soil. FeCl3 was added at three different concentrations (1, 2, and 3%) to stabilize the As (V). Leaching of the treated soil was investigated by making a soil column and passing tap water through it to determine solubility. Experimental results indicated that the bacterial activity had a pronounced positive effect on the transformation of As, and decreased the soluble exchangeable fraction from 50 to 0.7 mg/kg as compared to control and from 50 to 44 mg/kg after 7 days of treatment. FeCl3 also played an indispensable role in the adsorption/stabilization of As in the soil; 1 and 2% FeCl3 strongly influenced the adsorption of As (V). The soil leachate contained negligible amount of As and trace metals, which indicates that combining an efficient microbe with a chemical treatment is very effective route for the removal and stabilization of As from contaminated soil in the environment.
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Yang Y, Mu Y, Zeng XC, Wu W, Yuan J, Liu Y, Guoji E, Luo F, Chen X, Li H, Wang J. Functional genes and thermophilic microorganisms responsible for arsenite oxidation from the shallow sediment of an untraversed hot spring outlet. ECOTOXICOLOGY (LONDON, ENGLAND) 2017; 26:490-501. [PMID: 28251437 DOI: 10.1007/s10646-017-1779-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/08/2017] [Indexed: 06/06/2023]
Abstract
Hot Springs have unique geochemical features. Microorganisms-mediated arsenite oxidation is one of the major biogeochemical processes occurred in some hot springs. This study aimed to understand the diversities of genes and microorganisms involved in arsenite oxidation from the outlet of an untraversed hot spring located at an altitude of 4226 m. Microcosm assay indicated that the microbial community from the hot spring was able to efficiently oxidize As(III) using glucose, lactic acid, yeast extract or sodium bicarbonate as the sole carbon source. The microbial community contained 7 phyla of microorganisms, of which Proteobacteria and Firmicutes are largely dominant; this composition is unique and differs significantly from those of other described hot springs. Twenty one novel arsenite oxidase genes were identified from the samples, which are affiliated with the arsenite oxidase families of α-Proteobacteria, β-Proteobacteria or Archaea; this highlights the high diversity of the arsenite-oxidizing microorganisms from the hot spring. A cultivable arsenite-oxidizer Chelatococcu sp. GHS311 was also isolated from the sample using enrichment technique. It can completely convert 75.0 mg/L As(III) into As(V) in 18 days at 45 °C. The arsenite oxidase of GHS311 shares the maximal sequence identity (84.7%) to that of Hydrogenophaga sp. CL3, a non-thermotolerant bacterium. At the temperature lower than 30 °C or higher than 65 °C, the growth of this strain was completely inhibited. These data help us to better understand the diversity and functional features of the thermophilic arsenite-oxidizing microorganisms from hot springs.
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Affiliation(s)
- Ye Yang
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Yao Mu
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Xian-Chun Zeng
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China.
| | - Weiwei Wu
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Jie Yuan
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Yichen Liu
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - E Guoji
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Feng Luo
- School of Medicine, Jianghan University, Wuhan, 430056, People's Republic of China.
| | - Xiaoming Chen
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Hao Li
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
| | - Jianing Wang
- State Key Laboratory of Biogeology and Environmental Geology & Department of Biological Science and Technology, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, People's Republic of China
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