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Wu Z, Yu X, Ji Y, Liu G, Gao P, Xia L, Li P, Liang B, Freilich S, Gu L, Qiao W, Jiang J. Flexible catabolism of monoaromatic hydrocarbons by anaerobic microbiota adapting to oxygen exposure. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132762. [PMID: 37837778 DOI: 10.1016/j.jhazmat.2023.132762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/26/2023] [Accepted: 10/10/2023] [Indexed: 10/16/2023]
Abstract
Microbe-mediated anaerobic degradation is a practical method for remediation of the hazardous monoaromatic hydrocarbons (BTEX, including benzene, toluene, ethylbenzene and xylenes) under electron-deficient contaminated sites. However, how do the anaerobic functional microbes adapt to oxygen exposure and flexibly catabolize BTEX remain poorly understood. We investigated the switches of substrate spectrum and bacterial community upon oxygen perturbation in a nitrate-amended anaerobic toluene-degrading microbiota which was dominated by Aromatoleum species. DNA-stable isotope probing demonstrated that Aromatoleum species was involved in anaerobic mineralization of toluene. Metagenome-assembled genome of Aromatoleum species harbored both the nirBD-type genes for nitrate reduction to ammonium coupled with toluene oxidation and the additional meta-cleavage pathway for aerobic benzene catabolism. Once the anaerobic microbiota was fully exposed to oxygen and benzene, 1.05 ± 0.06% of Diaphorobacter species rapidly replaced Aromatoleum species and flourished to 96.72 ± 0.01%. Diaphorobacter sp. ZM was isolated, which was not only able to utilize benzene as the sole carbon source for aerobic growth and but also innovatively reduce nitrate to ammonium with citrate/lactate/glucose as the carbon source under anaerobic conditions. This study expands our understanding of the adaptive mechanism of microbiota for environmental redox disturbance and provides theoretical guidance for the bioremediation of BTEX-contaminated sites.
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Affiliation(s)
- Zhiming Wu
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin Yu
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanhan Ji
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Guiping Liu
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Ping Gao
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lei Xia
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Pengfa Li
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Bin Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Civil & Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
| | - Shiri Freilich
- Newe Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel
| | - Lifeng Gu
- ChangXing AISHENG Environmental Technology Co., Ltd, Zhejiang 313199, China
| | - Wenjing Qiao
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jiandong Jiang
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Chauhan P, Imam A, Kanaujia PK, Suman SK. Nano-bioremediation: an eco-friendly and effective step towards petroleum hydrocarbon removal from environment. ENVIRONMENTAL RESEARCH 2023; 231:116224. [PMID: 37224942 DOI: 10.1016/j.envres.2023.116224] [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: 02/21/2023] [Revised: 05/02/2023] [Accepted: 05/22/2023] [Indexed: 05/26/2023]
Abstract
Global concern about petroleum hydrocarbon pollution has intensified and gained scientific interest due to its noxious nature, high persistence in environmental matrices, and low degradability. One way to address this is by combining remediation techniques that could overcome the constraints of traditional physio-chemical and biological remediation strategies. The upgraded concept of bioremediation to nano-bioremediation in this direction offers an efficient, economical, and eco-friendly approach to mitigate petroleum contaminants. Here, we review the unique attributes of different types of nanoparticles and their synthesis procedures in remediating various petroleum pollutants. This review also highlights the microbial interaction with different metallic nanoparticles and their consequential alteration in microbial as well as enzymatic activity which expedites the remediating process. Besides, the latter part of the review explores the application of petroleum hydrocarbon degradation and the application of nano supports as immobilizing agents for microbes and enzymes. Further, the challenges and the future prospects of nano-bioremediation have also been discussed.
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Affiliation(s)
- Pooja Chauhan
- Analytical Sciences Division, Council of Scientific and Industrial Research - Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India; Material Resource Efficiency Division, Council of Scientific and Industrial Research - Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Arfin Imam
- Analytical Sciences Division, Council of Scientific and Industrial Research - Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India; Material Resource Efficiency Division, Council of Scientific and Industrial Research - Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Pankaj Kumar Kanaujia
- Analytical Sciences Division, Council of Scientific and Industrial Research - Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sunil Kumar Suman
- Material Resource Efficiency Division, Council of Scientific and Industrial Research - Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Wang J, Zhang Y, Ding Y, Song H, Liu T, Zhang Y, Xu W, Shi Y. Comparing the indigenous microorganism system in typical petroleum-contaminated groundwater. CHEMOSPHERE 2023; 311:137173. [PMID: 36356804 DOI: 10.1016/j.chemosphere.2022.137173] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 10/29/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
The environmental conditions at a contaminated site will impact on the indigenous microbial communities, with implications for the removal of pollutants. An analysis of the characteristics of microbial communities in petroleum-contaminated groundwater can give insights into the relationships between microbial community and environmental factors, and provide guidance about how microbes can be used to remediate and regulate petroleum-contaminated groundwater. This study focuses on two petroleum-contaminated sites in northeast China, the physico-chemical-biological changes in petroleum-contaminated groundwater were analyzed, the response relationship between hydro-chemical indicators and microbial communities was characterized, and the bioindicator that can reflect the petroleum contamination status were established for environmental monitoring and management. The results showed that Proteobacteria was the dominant bacteria in petroleum-contaminated groundwater, with a relative abundance of 42.45%-91.19%. pH, TDS, DO, NO3-, NO2-, SO42-, NH4+, Al, and Mn have significant effects on microbial community. The effect of petroleum pollutants on microbial communities is not only related to the concentration and composition of the pollutants themselves, but also could indirectly affect microbial communities by changing the content of inorganic electron acceptor components such as iron, manganese, sulfate and nitrate in groundwater, and this indirect effect is significantly greater than the direct impact of pollutants on microbial communities. In petroleum-contaminated groundwater, the dominant genera (Polaromonas, Caulobacter) and microbial metabolic functions (methanol oxidation, methylotrophy, ureolysis, and reductive biosynthesis) of the indigenous microbial community can be used as bioindicators to indicate petroleum contamination status. The higher abundance of these bioindicators in petroleum-contaminated groundwater, the more serious petroleum pollution in groundwater.
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Affiliation(s)
- Jili Wang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
| | - Yuling Zhang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China.
| | - Yang Ding
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
| | - Hewei Song
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
| | - Ting Liu
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
| | - Yi Zhang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
| | - Weiqing Xu
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
| | - Yujia Shi
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China; College of New Energy and Environment, Jilin University, Changchun, 130021, People's Republic of China; Institute of Water Resources and Environment, Jilin University, Changchun 130021, People's Republic of China
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Rondon-Afanador C, Pinilla-Meza G, Casallas-Cuervo FC, Diaz-Vanegas C, Barreto-Gomez D, Benavides C, Buitrago N, Calvo M, Forero-Forero C, Galvis-Ibarra V, Moscoso-Urdaneta V, Perdomo-Rengifo MC, Torres L, Arbeli Z, Brigmon RL, Roldan F. Bioremediation of heavy oily sludge: a microcosms study. Biodegradation 2023; 34:1-20. [PMID: 36463546 PMCID: PMC9935733 DOI: 10.1007/s10532-022-10006-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 11/02/2022] [Indexed: 12/07/2022]
Abstract
Oily sludge is a residue from the petroleum industry composed of a mixture of sand, water, metals, and high content of hydrocarbons (HCs). The heavy oily sludge used in this study originated from Colombian crude oil with high density and low American Petroleum Institute (API) gravity. The residual waste from heavy oil processing was subject to thermal and centrifugal extraction, resulting in heavy oily sludge with very high density and viscosity. Biodegradation of the total petroleum hydrocarbons (TPH) was tested in microcosms using several bioremediation approaches, including: biostimulation with bulking agents and nutrients, the surfactant Tween 80, and bioaugmentation. Select HC degrading bacteria were isolated based on their ability to grow and produce clear zones on different HCs. Degradation of TPH in the microcosms was monitored gravimetrically and with gas chromatography (GC). The TPH removal in all treatments ranged between 2 and 67%, regardless of the addition of microbial consortiums, amendments, or surfactants within the tested parameters. The results of this study demonstrated that bioremediation of heavy oily sludge presents greater challenges to achieve regulatory requirements. Additional physicochemical treatments analysis to remediate this recalcitrant material may be required to achieve a desirable degradation rate.
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Affiliation(s)
- Cinthya Rondon-Afanador
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Gustavo Pinilla-Meza
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Francy C. Casallas-Cuervo
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Camila Diaz-Vanegas
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Daniela Barreto-Gomez
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Carolina Benavides
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Nicole Buitrago
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Melissa Calvo
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Camila Forero-Forero
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Valentina Galvis-Ibarra
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Victoria Moscoso-Urdaneta
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Maria C. Perdomo-Rengifo
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Laura Torres
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | - Ziv Arbeli
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC Colombia
| | | | - Fabio Roldan
- Facultad de Ciencias, Departamento de Biología, Unidad de Saneamiento y Biotecnología Ambiental (USBA), Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá, DC, Colombia.
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Wu Z, Liu G, Ji Y, Li P, Yu X, Qiao W, Wang B, Shi K, Liu W, Liang B, Wang D, Yanuka-Golub K, Freilich S, Jiang J. Electron acceptors determine the BTEX degradation capacity of anaerobic microbiota via regulating the microbial community. ENVIRONMENTAL RESEARCH 2022; 215:114420. [PMID: 36167116 DOI: 10.1016/j.envres.2022.114420] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/06/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Anaerobic degradation is the major pathway for microbial degradation of benzene, toluene, ethylbenzene, and xylenes (BTEX) under electron acceptor lacking conditions. However, how exogenous electron acceptors modulate BTEX degradation through shaping the microbial community structure remains poorly understood. Here, we investigated the effect of various exogenous electron acceptors on BTEX degradation as well as methane production in anaerobic microbiota, which were enriched from the same contaminated soil. It was found that the BTEX degradation capacities of the anaerobic microbiota gradually increased along with the increasing redox potentials of the exogenous electron acceptors supplemented (WE: Without exogenous electron acceptors < SS: Sulfate supplement < FS: Ferric iron supplement < NS: Nitrate supplement), while the complexity of the co-occurring networks (e.g., avgK and links) of the microbiota gradually decreased, showing that microbiota supplemented with higher redox potential electron acceptors were less dependent on the formation of complex microbial interactions to perform BTEX degradation. Microbiota NS showed the highest degrading capacity and the broadest substrate-spectrum for BTEX, and it could metabolize BTEX through multiple modules which not only contained fewer species but also different key microbial taxa (eg. Petrimonas, Achromobacter and Comamonas). Microbiota WE and FS, with the highest methanogenic capacities, shared common core species such as Sedimentibacter, Acetobacterium, Methanobacterium and Smithella/Syntrophus, which cooperated with Geobacter (microbiota WE) or Desulfoprunum (microbiota FS) to perform BTEX degradation and methane production. This study demonstrates that electron acceptors may alter microbial function by reshaping microbial community structure and regulating microbial interactions and provides guidelines for electron acceptor selection for bioremediation of aromatic pollutant-contaminated anaerobic sites.
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Affiliation(s)
- Zhiming Wu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Guiping Liu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Yanhan Ji
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Pengfa Li
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Xin Yu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Wenjing Qiao
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Baozhan Wang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Ke Shi
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil & Environmental Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Wenzhong Liu
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil & Environmental Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Bin Liang
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil & Environmental Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Dong Wang
- Jiangsu Academy of Environmental Science and Technology Co., Ltd, Nanjing, 210095, China
| | - Keren Yanuka-Golub
- The Galilee Society Institute of Applied Research, Shefa-Amr, 20200, Israel
| | - Shiri Freilich
- Newe Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel.
| | - Jiandong Jiang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China.
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Genomic Analysis of Carbapenem-Resistant Comamonas in Water Matrices: Implications for Public Health and Wastewater Treatments. Appl Environ Microbiol 2022; 88:e0064622. [PMID: 35708324 DOI: 10.1128/aem.00646-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Comamonas spp. are Gram-negative bacteria that catabolize a wide range of organic and inorganic substrates. Comamonas spp. are abundant in aquatic and soil environments, including wastewater, and can cause opportunistic infections in humans. Because of their potential in wastewater bioaugmentation and bioremediation strategies, the identification of Comamonas species harboring genes encoding carbapenemases and other clinically important antibiotic resistance genes warrant further investigation. Here, we present an analysis of 39 whole-genome sequences comprising three Comamonas species from aquatic environments in South Australia that were recovered on media supplemented with carbapenems. The analysis includes a detailed description of 33 Comamonas denitrificans isolates, some of which carried chromosomally acquired blaGES-5, blaOXA, and aminoglycoside resistance (aadA) genes located on putative genomic islands (GIs). All blaGES-5- and blaOXA-containing GIs appear to be unique to this Australian collection of C. denitrificans. Notably, most open reading frames (ORFs) within the GIs, including all antimicrobial resistance (AMR) genes, had adjacent attC sites, indicating that these ORFs are mobile gene cassettes. One C. denitrificans isolate carried an IncP-1 plasmid with genes involved in xenobiotic degradation and response to oxidative stress. Our assessment of the sequences highlights the very distant nature of C. denitrificans to the other Comamonas species and its apparent disposition to acquire antimicrobial resistance genes on putative genomic islands. IMPORTANCE Antimicrobial resistance (AMR) poses a global public health threat, and the increase in resistance to "last-resort drugs," such as carbapenems, is alarming. Wastewater has been flagged as a hot spot for AMR evolution. Comamonas spp. are among the most common bacteria in wastewater and play a role in its bioaugmentation. While the ability of Comamonas species to catabolize a wide range of organic and inorganic substrates is well documented, some species are also opportunistic pathogens. However, data regarding AMR in Comamonas spp. are limited. Here, through the genomic analyses of 39 carbapenem-resistant Comamonas isolates, we make several key observations, including the identification of a subset of C. denitrificans isolates that harbored genomic islands encoding carbapenemase blaGES-5 or extended-spectrum β-lactamase blaOXA alleles. Given the importance of Comamonas species in potential wastewater bioaugmentation and bioremediation strategies, as well as their status as emerging pathogens, the acquisition of critically important antibiotic resistance genes on genomic islands warrants future monitoring.
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8
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Sun P, Shen G, Tan Q, Chen Q, Song R, Hu J. Degradation of BTEXS with stable and pH-insensitive iron-manganese modified biochar from post pyrolysis. CHEMOSPHERE 2021; 263:128092. [PMID: 33297088 DOI: 10.1016/j.chemosphere.2020.128092] [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: 06/08/2020] [Revised: 07/21/2020] [Accepted: 08/18/2020] [Indexed: 06/12/2023]
Abstract
An efficient iron-manganese modified biochar (FMBC) was successfully synthesized as a heterogeneous Fenton-like catalyst through easy post-modification and applied for degradation of benzene, toluene, ethylbenzene, xylene isomers (ortho, para, and meta), and styrene (BTEXS) in the presence of H2O2. The catalyst was characterized by Brunauer-Emmett-Teller method, scanning electron microscopy, and X-ray photoelectron spectrometry. The effects of H2O2 concentration, FMBC dose, and initial pH on BTEXS degradation were also investigated. Results showed that degradation efficiency of FMBC for individual BTEXS varied from 83.05% to 94.12% in 3 h. Kinetic analysis showed that a first-order kinetic model with respect to BTEXS concentration could be used to explain the BTEXS degradation for FMBC/H2O2 system. The degradation reaction was more suitable in a wide pH range (3-10) than those in previous studies, thereby overcoming the low-efficiency problem of conventional Fenton reaction at high pH. Moreover, the doses of FMBC and H2O2 are a crucial factor affecting BTEXS degradation. Radical scavenger experiments revealed that ∙OH, ∙O2-, and 1O2 participated in the degradation process, and ∙OH was the major contributor. The synthesized catalyst is durable with stable BTEXS removal efficiency after seven consecutive cycles. The removal efficiency of BTEXS by FMBC in produced water reached 93.23% in 12 h, indicating FMBC has practical value.
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Affiliation(s)
- Peng Sun
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Guoqing Shen
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China.
| | - Qiren Tan
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Qincheng Chen
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Rui Song
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Jingna Hu
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
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BTEX biodegradation by Bacillus amyloliquefaciens subsp. plantarum W1 and its proposed BTEX biodegradation pathways. Sci Rep 2020; 10:17408. [PMID: 33060819 PMCID: PMC7562720 DOI: 10.1038/s41598-020-74570-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 08/10/2020] [Indexed: 12/04/2022] Open
Abstract
Benzene, toluene, ethylbenzene and (p-, m- and o-) xylene (BTEX) are classified as main pollutants by several environmental protection agencies. In this study, a non-pathogenic, Gram-positive rod-shape bacterium with an ability to degrade all six BTEX compounds, employed as an individual substrate or as a mixture, was isolated. The bacterial isolate was identified as Bacillus amyloliquefaciens subsp. plantarum strain W1. An overall BTEX biodegradation (as individual substrates) by strain W1 could be ranked as: toluene > benzene, ethylbenzene, p-xylene > m-xylene > o-xylene. When presented in a BTEX mixture, m-xylene and o-xylene biodegradation was slightly improved suggesting an induction effect by other BTEX components. BTEX biodegradation pathways of strain W1 were proposed based on analyses of its metabolic intermediates identified by LC–MS/MS. Detected activity of several putative monooxygenases and dioxygenases suggested the versatility of strain W1. Thus far, this is the first report of biodegradation pathways for all of the six BTEX compounds by a unique bacterium of the genus Bacillus. Moreover, B. amyloliquefaciens subsp. plantarum W1 could be a good candidate for an in situ bioremediation considering its Generally Recognized as Safe (GRAS) status and a possibility to serve as a plant growth-promoting rhizobacterium (PGPR).
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Coal-Degrading Bacteria Display Characteristics Typical of Plant Growth Promoting Rhizobacteria. Processes (Basel) 2020. [DOI: 10.3390/pr8091111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Coal mining produces large quantities of discard that is stockpiled in large dumps. This stockpiled material, termed coal discard, poses an environmental threat emphasising the need for appropriate bioremediation. Here, metagenomic analysis of the 16S rRNA from ten coal-degrading strains previously isolated from coal slurry from discard dumps and from the rhizosphere of diesel-contaminated sites was used to establish genetic relatedness to known plant growth-promoting (PGP) bacteria in the NCBI database. Measurement of indole and ammonium production and solubilisation of P and K were used to screen bacteria for PGP characteristics. BLAST analysis revealed ≥ 99% homology of six isolates with reference PGP strains of Bacillus, Escherichia, Citrobacter, Serratia, Exiguobacterium and Microbacterium, while two strains showed 94% and 91% homology with Proteus. The most competent PGP strains were Proteus strain ECCN 20b, Proteus strain ECCN 23b and Serratia strain ECCN 24b isolated from diesel-contaminated soil. In response to L-trp supplementation, the concentration of indolic compounds (measured as indole-3-acetic acid) increased. Production of ammonium and solubilisation of insoluble P by these strains was also apparent. Only Serratia strain ECCN 24b was capable of solubilising insoluble K. Production of indoles increased following exposure to increasing aliquots of coal discard, suggesting no negative effect of this material on indole production by these coal-degrading bacterial isolates and that these bacteria may indeed possess PGP characteristics.
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11
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Wang M, Deng B, Fu X, Sun H, Xu Z. Characterizations of microbial diversity and machine oil degrading microbes in machine oil contaminated soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113190. [PMID: 31541828 DOI: 10.1016/j.envpol.2019.113190] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/02/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Microbial diversity in machine oil contaminated soil was determined by high-throughput amplicon sequencing technology. The diversity of culturable microbes in the contaminated soil was further characterized using polymerase chain reaction method. Proteobacteria and Bacteroidetes were the most dominant phyla and occupied 52.73 and 16.77%, respectively, while the most abundant genera were Methylotenera (21.62%) and Flavobacterium (3.06%) in the soil. In the culturable microbes, the major phyla were Firmicutes (46.15%) and Proteobacteria (37.36%) and the most abundant genera were Bacillus (42.86%) and Aeromonas (34.07%). Four isolated microbes with high machine oil degradation efficiency were selected to evaluate their characteristics on the oil degradation. All of them reached their highest oil degradation rate after 7 days of incubation. Most of them significantly increased their oil degradation rate by additional carbon or organic nitrogen source in the incubation medium. The oil degradation rate by combination of the four microbes at the same inoculation level was also higher than the rate from each individual microbe. The protocol and findings of this study are very useful for developing micro-bioremediation method to eliminate machine oil contaminants from soil.
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Affiliation(s)
- Mengjiao Wang
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China; Shaanxi Provincial Engineering Research Center of Edible and Medicinal Microbes, Shaanxi University of Technology, Hanzhong, Shaanxi, China; Shaanxi Key Laboratory of Bio-resources, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Baiwan Deng
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China; Shaanxi Provincial Engineering Research Center of Edible and Medicinal Microbes, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Xun Fu
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Haiyan Sun
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China; Shaanxi Key Laboratory of Bio-resources, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Zhimin Xu
- School of Nutrition and Food Sciences, Louisiana State University, Baton Rouge, LA, USA.
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12
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Durán RE, Méndez V, Rodríguez-Castro L, Barra-Sanhueza B, Salvà-Serra F, Moore ERB, Castro-Nallar E, Seeger M. Genomic and Physiological Traits of the Marine Bacterium Alcaligenes aquatilis QD168 Isolated From Quintero Bay, Central Chile, Reveal a Robust Adaptive Response to Environmental Stressors. Front Microbiol 2019; 10:528. [PMID: 31024465 PMCID: PMC6460240 DOI: 10.3389/fmicb.2019.00528] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 03/01/2019] [Indexed: 12/16/2022] Open
Abstract
Alcaligenes aquatilis QD168 is a marine, aromatic hydrocarbon-degrading bacterium, isolated from an oil-polluted sediment of Quintero Bay, an industrial-coastal zone that has been chronically impacted by diverse pollutants. The aims of this study were to characterize the phylogenomic positions of Alcaligenes spp. and to characterize the genetic determinants and the physiological response of A. aquatilis QD168 to model environmental stressors (benzene, oxidizing agents, and salt). Phylogenomic analyses, using 35 housekeeping genes, clustered A. aquatilis QD168 with four other strains of Alcaligenes spp. (A. aquatilis BU33N, A. faecalis JQ135, A. faecalis UBA3227, and A. faecalis UBA7629). Genomic sequence analyses of A. aquatilis QD168 with 25 Alcaligenes spp., using ANIb, indicated that A. aquatilis BU33N is the closest related strain, with 96.8% ANIb similarity. Strain QD168 harbors 95 genes encoding proteins of seven central catabolic pathways, as well as sixteen peripheral catabolic pathways/reactions for aromatic compounds. A. aquatilis QD168 was able to grow on 3-hydroxybenzoate, 4-hydroxybenzoate, benzoate, benzene, 3-hydroxycinnamate, cinnamate, anthranilate, benzamide, 4-aminobenzoate, nicotinate, toluene, biphenyl and tryptophan, as sole carbon or nitrogen source. Benzene degradation was further analyzed by growth, metabolite identification and gene expression analyses. Benzene strongly induced the expression of the genes encoding phenol hydroxylase (dmpP) and catechol 1,2-dioxygenase (catA). Additionally, 30 genes encoding transcriptional regulators, scavenging enzymes, oxidative damage repair systems and isozymes involved in oxidative stress response were identified. Oxidative stress response of strain QD168 to hydrogen peroxide and paraquat was characterized, demonstrating that A. aquatilis QD168 is notably more resistant to paraquat than to H2O2. Genetic determinants (47 genes) for osmoprotective responses were identified, correlating with observed high halotolerance by strain QD168. The physiological adaptation of A. aquatilis QD168 to environmental stressors such as pollutants, oxidative stress and salinity may be exploited for bioremediation of oil-polluted saline sites.
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Affiliation(s)
- Roberto E Durán
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química - Centro de Biotecnología, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Valentina Méndez
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química - Centro de Biotecnología, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Laura Rodríguez-Castro
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química - Centro de Biotecnología, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Bárbara Barra-Sanhueza
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química - Centro de Biotecnología, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Francisco Salvà-Serra
- Department of Infectious Diseases, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Culture Collection University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.,Centre for Antibiotic Resistance Research, University of Gothenburg, Gothenburg, Sweden.,Microbiology, Department of Biology, University of the Balearic Islands, Palma de Mallorca, Spain
| | - Edward R B Moore
- Department of Infectious Diseases, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Culture Collection University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.,Centre for Antibiotic Resistance Research, University of Gothenburg, Gothenburg, Sweden
| | - Eduardo Castro-Nallar
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Michael Seeger
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química - Centro de Biotecnología, Universidad Técnica Federico Santa María, Valparaíso, Chile
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13
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Nourollahi A, Sedighi-Khavidak S, Mokhtari M, Eslami G, Shiranian M. Isolation and identification of low-density polyethylene (LDPE) biodegrading bacteria from waste landfill in Yazd. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/00207233.2018.1551986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Asieh Nourollahi
- Environmental Science and Technology Research Centre, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Samaneh Sedighi-Khavidak
- Medical Biotechnology Research Centre, Ashkezar Branch, Islamic Azad University, Yazd, Iran
- Department of Biology, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
| | - Mehdi Mokhtari
- Faculty Members of Environmental Science and Technology Research Centre, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Gilda Eslami
- Research Centre for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mahbubeh Shiranian
- Environmental Science and Technology Research Centre, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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14
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Wang M, Hua J, Yang Y. Fabrication of CDs/CdS-TiO 2 ternary nano-composites for photocatalytic degradation of benzene and toluene under visible light irradiation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:102-109. [PMID: 29574311 DOI: 10.1016/j.saa.2018.03.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/04/2018] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
An efficient cadmium sulfide quantum-dots (CdS QDs) and carbon dots (CDs) modified TiO2 photocatalyst (CdS/CDs-TiO2) was successfully fabricated. The as-prepared ternary nano-composites simultaneously improved the photo-corrosion of CdS and amplified its photocatalytic activity. The introduction of CdS QDs and CDs could enhance more absorbance of light, prevent the undesirable electron/hole recombination, and promote charge separation, which was important for the continuous formation of OH and O2- radicals. When the optimal mass ratio of CdS QDs to CDs was 3:1, above 90% degradation efficiencies were achieved for benzene within 1h and toluene in 2h, while that of pure TiO2 (P25), CdS QDs-TiO2, CDs-TiO2 nano-composites was around 15%. Owing to the symmetric structure and conjugation of methyl with benzene ring, the degradation of toluene was more difficult than benzene to carry on. The new fabricated nano-composites showed good prospective application of cleaning up refractory pollutants and the resource utilization.
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Affiliation(s)
- Meng Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Yunnan Province 650500, China
| | - Jianhao Hua
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Yunnan Province 650500, China
| | - Yaling Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Yunnan Province 650500, China.
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15
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Wu C, Xu P, Xu B, Li W, Li S, Wang X. o-Xylene removal using one- and two-phase partitioning biotrickling filters: steady/transient-state performance and microbial community. ENVIRONMENTAL TECHNOLOGY 2018; 39:109-119. [PMID: 28278766 DOI: 10.1080/09593330.2017.1296892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 02/14/2017] [Indexed: 06/06/2023]
Abstract
In this study, one- and two-phase partitioning biotrickling filters (1P-BTF and 2P-BTF, respectively) inoculated with a pre-acclimated mixed culture were examined for the removal of hydrophobic and refractory o-xylene. A small fraction of silicone oil (5% v/v) was added as a non-aqueous phase. Due to the presence of silicone oil, the 2P-BTF exhibited superior performance and stability for o-xylene biodegradation at steady and transient operations. Higher macro-kinetic constants for o-xylene removal by the Michaelis-Menten model were obtained for the 2P-BTF with a saturation constant of 0.396 g m-3 and a maximum elimination capacity of 105.7 g m-3 h-1. The enhancement of removal performance for the 2P-BTF was supported by dominant specialized microorganisms with o-xylene biodegradability. The diversity of microbial community was influenced by the presence of silicone oil. This study demonstrated that a BTF with 5% of silicone oil could be applied for the treatment of hydrophobic and refractory volatile organic compounds. It also provided valuable information for better understanding the relationship between microbial community and removal performance using two-phase partitioning bioreactors.
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Affiliation(s)
- Chao Wu
- a Key Laboratory of Biomass Chemical Engineering of Ministry of Education , Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus) , Hangzhou , People's Republic of China
| | - Peilun Xu
- a Key Laboratory of Biomass Chemical Engineering of Ministry of Education , Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus) , Hangzhou , People's Republic of China
| | - Bailong Xu
- a Key Laboratory of Biomass Chemical Engineering of Ministry of Education , Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus) , Hangzhou , People's Republic of China
| | - Wei Li
- a Key Laboratory of Biomass Chemical Engineering of Ministry of Education , Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus) , Hangzhou , People's Republic of China
| | - Sujing Li
- a Key Laboratory of Biomass Chemical Engineering of Ministry of Education , Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus) , Hangzhou , People's Republic of China
| | - Xiangqian Wang
- a Key Laboratory of Biomass Chemical Engineering of Ministry of Education , Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus) , Hangzhou , People's Republic of China
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16
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Herzyk A, Fillinger L, Larentis M, Qiu S, Maloszewski P, Hünniger M, Schmidt SI, Stumpp C, Marozava S, Knappett PSK, Elsner M, Meckenstock R, Lueders T, Griebler C. Response and recovery of a pristine groundwater ecosystem impacted by toluene contamination - A meso-scale indoor aquifer experiment. JOURNAL OF CONTAMINANT HYDROLOGY 2017; 207:17-30. [PMID: 29128133 DOI: 10.1016/j.jconhyd.2017.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/20/2017] [Accepted: 10/25/2017] [Indexed: 06/07/2023]
Abstract
Microbial communities are the driving force behind the degradation of contaminants like aromatic hydrocarbons in groundwater ecosystems. However, little is known about the response of native microbial communities to contamination in pristine environments as well as their potential to recover from a contamination event. Here, we used an indoor aquifer mesocosm filled with sandy quaternary calciferous sediment that was continuously fed with pristine groundwater to study the response, resistance and resilience of microbial communities to toluene contamination over a period of almost two years, comprising 132days of toluene exposure followed by nearly 600days of recovery. We observed an unexpectedly high intrinsic potential for toluene degradation, starting within the first two weeks after the first exposure. The contamination led to a shift from oxic to anoxic, primarily nitrate-reducing conditions as well as marked cell growth inside the contaminant plume. Depth-resolved community fingerprinting revealed a low resistance of the native microbial community to the perturbation induced by the exposure to toluene. Distinct populations that were dominated by a small number of operational taxonomic units (OTUs) rapidly emerged inside the plume and at the plume fringes, partially replacing the original community. During the recovery period physico-chemical conditions were restored to the pristine state within about 35days, whereas the recovery of the biological parameters was much slower and the community composition inside the former plume area had not recovered to the original state by the end of the experiment. These results demonstrate the low resilience of sediment-associated groundwater microbial communities to organic pollution and underline that recovery of groundwater ecosystems cannot be assessed solely by physico-chemical parameters.
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Affiliation(s)
- Agnieszka Herzyk
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Lucas Fillinger
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Michael Larentis
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Shiran Qiu
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Piotr Maloszewski
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Marko Hünniger
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Susanne I Schmidt
- University of Koblenz-Landau, Institute for Environmental Sciences, Landau, Germany
| | - Christine Stumpp
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Sviatlana Marozava
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Peter S K Knappett
- Texas A&M University, College of Geosciences, Department of Geology & Geophysics, College Station, Texas, United States
| | - Martin Elsner
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany; Technical University of Munich, Chair of Analytical Chemistry and Water Chemistry, Munich, Germany
| | - Rainer Meckenstock
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany; University of Duisburg-Essen, Biofilm Centre, Aquatic Microbiology, Essen, Germany
| | - Tillmann Lueders
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany
| | - Christian Griebler
- Helmholtz Zentrum München, Institute of Groundwater Ecology, Neuherberg, Germany.
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17
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Cometabolic Degradation of Dibenzofuran and Dibenzothiophene by a Naphthalene-Degrading Comamonas sp. JB. Curr Microbiol 2017; 74:1411-1416. [PMID: 28821932 DOI: 10.1007/s00284-017-1334-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 08/10/2017] [Indexed: 10/19/2022]
Abstract
Comamonas sp. JB was used to investigate the cometabolic degradation of dibenzofuran (DBF) and dibenzothiophene (DBT) with naphthalene as the primary substrate. Dehydrogenase and ATPase activity of the growing system with the presence of DBF and DBT were decreased when compared to only naphthalene in the growing system, indicating that the presence of DBF and DBT inhibited the metabolic activity of strain JB. The pathways and enzymes involved in the cometabolic degradation were tested. Examination of metabolites elucidated that strain JB cometabolically degraded DBF to 1,2-dihydroxydibenzofuran, subsequently to 2-hydroxy-4-(3'-oxo-3'H-benzofuran-2'-yliden)but-2-enoic acid, and finally to catechol. Meanwhile, strain JB cometabolically degraded DBT to 1,2-dihydroxydibenzothiophene and subsequently to the ring cleavage product. A series of naphthalene-degrading enzymes including naphthalene dioxygenase, 1,2-dihydroxynaphthalene dioxygenase, salicylaldehyde dehydrogenase, salicylate hydroxylase, and catechol 2,3-oxygenase have been detected, confirming that naphthalene was the real inducer of expression the degradation enzymes and metabolic pathways were controlled by naphthalene-degrading enzymes.
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18
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Liu J, Shi S, Ji X, Jiang B, Xue L, Li M, Tan L. Performance and microbial community dynamics of electricity-assisted sequencing batch reactor (SBR) for treatment of saline petrochemical wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:17556-17565. [PMID: 28597382 DOI: 10.1007/s11356-017-9446-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 06/01/2017] [Indexed: 06/07/2023]
Abstract
High-salinity wastewater is often difficult to treat by common biological technologies due to salinity stress on the bacterial community. Electricity-assisted anaerobic technologies have significantly enhanced the treatment performance by alleviating the impact of salinity stress on the bacterial community, but electricity-assisted aerobic technologies have less been reported. Herein, a novel bio-electrochemistry system has been designed and operated in which a pair of stainless iron mesh-graphite plate electrodes were installed into a sequencing batch reactor (SBR, designated as S1) to strengthen the performance of saline petrochemical wastewater under aerobic conditions. The removal efficiency of phenol and chemical oxygen demand (COD) in S1 were 94.1 and 91.2%, respectively, on day 45, which was clearly higher than the removal efficiency of a single SBR (S2) and an electrochemical reactor (S3), indicating that a coupling effect existed between the electrochemical process and biodegradation. A certain amount of salinity (≤8000 mg/L) could enhance the treatment performance in S1 but weaken that in S2. Illumina sequencing revealed that microbial communities in S1 on days 45 and 91 were richer and more diverse than in S2, which suggests that electrical stimulation could enhance the diversity and richness of the microbial community, and reduce the negative effect of salinity on the microorganisms and enrich some salt-adapted microorganisms, thus improve the ability of S1 to respond to salinity stress. This novel bio-electrochemistry system was shown to be an alternative technology for the high saline petrochemical wastewater.
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Affiliation(s)
- Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, China.
| | - Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
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19
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Biodegradation of BTEX Aromatics by a Haloduric Microbial Consortium Enriched from a Sediment of Bohai Sea, China. Appl Biochem Biotechnol 2017; 183:893-905. [DOI: 10.1007/s12010-017-2471-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/29/2017] [Indexed: 10/19/2022]
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20
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Jiang B, Du C, Shi S, Tan L, Li M, Liu J, Xue L, Ji X. Enhanced treatment performance of coking wastewater and reduced membrane fouling using a novel EMBR. BIORESOURCE TECHNOLOGY 2017; 229:39-45. [PMID: 28107720 DOI: 10.1016/j.biortech.2016.12.116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/30/2016] [Accepted: 12/31/2016] [Indexed: 06/06/2023]
Abstract
A novel EMBR (electric field applied in MBR) by placing stainless steel mesh cathode inside a flat membrane module and stainless steel mesh anode outside the module was built and operated to enhance the treatment performance of coking wastewater containing phenol, pyridine and quinoline and reduce the membrane fouling. The degradation rates of COD, phenol, pyridine and quinoline in EMBR with electric field (reactor A) were significantly higher than the sum of EMBR without electric field (reactor B) and only electro-catalytic degradation during the long-term treatment, confirming that a coupling effect was existed between biodegradation and electro-catalytic degradation process. Illumina sequencing data revealed that bacterial community was richer and more diverse in reactor A. Comamonas strain JB as the inoculums was the most dominant genus in each reactor and electric field applied in reactor A further improved the abundance of strain JB. The membrane fouling in reactor A was reduced.
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Affiliation(s)
- Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Cong Du
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian 116081, China
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21
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Dellagnezze BM, Vasconcellos SP, Angelim AL, Melo VMM, Santisi S, Cappello S, Oliveira VM. Bioaugmentation strategy employing a microbial consortium immobilized in chitosan beads for oil degradation in mesocosm scale. MARINE POLLUTION BULLETIN 2016; 107:107-117. [PMID: 27158046 DOI: 10.1016/j.marpolbul.2016.04.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 04/06/2016] [Accepted: 04/08/2016] [Indexed: 05/22/2023]
Abstract
A bacterial consortium composed by four metagenomic clones and Bacillus subtilis strain CBMAI 707, all derived from petroleum reservoirs, was entrapped in chitosan beads and evaluated regarding hydrocarbon degradation capability. Experiments were carried out in mesocosm scale (3000L) with seawater artificially polluted with crude oil. At different time intervals, mesocosms were sampled and subjected to GC-FID and microbiological analyses, as total and heterotrophic culturable bacterial abundance (DAPI and CFU count), biological oxygen demand (BOD) and taxonomic diversity (massive sequencing of 16S rRNA genes). The results obtained showed that degradation of n-alkane hydrocarbons was similar between both treatments. However, aromatic compound degradation was more efficient in bioaugmentation treatment, with biodegradation percentages reaching up to 99% in 30days. Community dynamics was different between treatments and the consortium used in the bioaugmentation treatment contributed to a significant increase in aromatic hydrocarbon degradation.
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Affiliation(s)
- B M Dellagnezze
- Division of Microbial Resources, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University - UNICAMP, CP 6171, CEP 13081-970 Campinas, SP, Brazil.
| | - S P Vasconcellos
- Federal University of São Paulo (UNIFESP), Rua Prof. Artur Riedel, 275, CEP 09972-270, Jd. Eldorado, Diadema, SP, Brazil
| | - A L Angelim
- Lembiotech (UFC), Federal University of Ceará, Av. Humberto Monte, 2977, Campus do Pici, Bloco 909, 60455-000, Fortaleza, CE, Brazil
| | - V M M Melo
- Lembiotech (UFC), Federal University of Ceará, Av. Humberto Monte, 2977, Campus do Pici, Bloco 909, 60455-000, Fortaleza, CE, Brazil
| | - S Santisi
- Institute for Coastal Marine Environment (IAMC), Consiglio Nazionale delle Ricerche (CNR) of Messina, Messina, Italy
| | - S Cappello
- Institute for Coastal Marine Environment (IAMC), Consiglio Nazionale delle Ricerche (CNR) of Messina, Messina, Italy
| | - V M Oliveira
- Division of Microbial Resources, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University - UNICAMP, CP 6171, CEP 13081-970 Campinas, SP, Brazil
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22
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Jiang B, Zhou Z, Dong Y, Wang B, Jiang J, Guan X, Gao S, Yang A, Chen Z, Sun H. Bioremediation of Petrochemical Wastewater Containing BTEX Compounds by a New Immobilized Bacterium Comamonas sp. JB in Magnetic Gellan Gum. Appl Biochem Biotechnol 2015; 176:572-81. [DOI: 10.1007/s12010-015-1596-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 03/20/2015] [Indexed: 11/28/2022]
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