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Li C, Chen R, Ouyang W, Xue C, Liu M, Liu H. The response of C/N/S cycling functional microbial communities to redox conditions in shallow aquifers using in-situ sediment as bio-trap matrix. ENVIRONMENTAL TECHNOLOGY 2024; 45:3666-3678. [PMID: 37323025 DOI: 10.1080/09593330.2023.2225704] [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: 12/03/2022] [Accepted: 05/20/2023] [Indexed: 06/17/2023]
Abstract
Microbial communities are fundamental components driving critical biogeochemical carbon (C), nitrogen (N) and sulfur (S) cycles in groundwater ecosystems. The reduction-oxidation (redox) potential is one important environmental factor influencing the microbial community composition. Here, we developed a bio-trap method using in-situ sediment as a matrix to collect aquifer sediment samples and evaluate the response of microbial composition and C/N/S cycling functions to redox variations created by providing sole O2, joint O2 and H2, and sole H2 to three wells. Illumina sequencing analyses showed that the microbial communities in the bio-trap sediment could respond quickly to redox changes in the wells, demonstrating that this bio-trap method is promising for detecting microbial variation in the aquifer sediment. The microbial metabolic functions related to C, N and S cyclings and organic pollutants degradation were predicted by the Kyoto Encyclopedia of Genes and Genomes (KEGG) approach. It was found that the joint O2 and H2 injection produced medium oxidation-reduction potential (ORP -346 and -614 mV) and enhanced more microbial functions than sole O2 or H2, which mainly include oxidative phosphorylation, most carbon source metabolism, various pollutants degradation, and nitrogen and sulfur metabolism. Moreover, the functional genes encoding phenol monooxygenase, dioxygenase, nitrogen fixation, nitrification, aerobic and anaerobic nitrate reductase, nitrite reductase, nitric oxide reductase, and sulfur oxidation increased. These findings tell us the contaminant bioremediation and N, S metabolism can be promoted by adjusting ORP realised by injecting joint O2 and H2.
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Affiliation(s)
- Cui Li
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, People's Republic of China
- Hubei Ecology Polytechnic College, Wuhan, People's Republic of China
| | - Rong Chen
- School of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan, People's Republic of China
| | - Weiwei Ouyang
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, People's Republic of China
| | - Chen Xue
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, People's Republic of China
| | - Minghui Liu
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, People's Republic of China
| | - Hui Liu
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, People's Republic of China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, People's Republic of China
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2
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Yang K, Li H, Li L, Zhao Z, Hu J, Wei Y, Yang H, Li J. Metabolomics reveal metabolic variation caused by co-culture of Arthrobacter ureafaciens and Trichoderma harzianum and their impacts on wheat germination. Int Microbiol 2023; 26:723-739. [PMID: 36564574 DOI: 10.1007/s10123-022-00302-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/26/2022] [Accepted: 11/17/2022] [Indexed: 12/24/2022]
Abstract
Arthrobacter ureafaciens DnL1-1 is a bacterium used for atrazine degradation, while Trichoderma harzianum LTR-2 is a widely used biocontrol fungus. In this study, a liquid co-cultivation of these two organisms was initially tested. The significant changes in the metabolome of fermentation liquors were investigated based on cultivation techniques (single-cultured and co-cultured DnL1-1 and LTR-2) using an UPLC-QTOF-MS in an untargeted metabolomic approach. Principle components analysis (PCA) and partial least squares discriminant analysis (PLS-DA) supervised modelling revealed modifications of the metabolic profiles in fermentation liquors as a function of interactions between different strains. Compared with pure-cultivation of DnL1-1, 51 compounds were altered during the cocultivation, with unique and significant differences in the abundance of organic nitrogen compounds (e.g. carnitine, acylcarnitine 4:0, acylcarnitine 5:0, 3-dehydroxycarnitine and O-acetyl-L-carnitine) and trans-zeatin riboside. Nevertheless, compared with pure-cultivation of LTR-2, the abundance of 157 compounds, including amino acids, soluble sugars, organic acids, indoles and derivatives, nucleosides, and others, changed significantly in the cocultivation. Among them, the concentration of tryptophan, which is a precursor to indoleacetic acid, indoleacetic acid, aspartic acid, and L-glutamic acid increased while that of most soluble sugars decreased upon cocultivation. The fermentation filtrates of co-cultivation of LTR-2 and DnL1-1 showed significant promoting effects on germination and radicle length of wheat. A subsequent experiment demonstrated synergistic effects of differential metabolites caused by co-cultivation of DnL1-1 and LTR-2 on wheat germination. Comprehensive metabolic profiling may provide valuable information on the effects of DnL1-1 and LTR-2 on wheat growth.
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Affiliation(s)
- Kai Yang
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Hongmei Li
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Ling Li
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Zhongjuan Zhao
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Jindong Hu
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Yanli Wei
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Hetong Yang
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China
| | - Jishun Li
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250013, China.
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Mahesh N, Shyamalagowri S, Pavithra MKS, Alodhayb A, Alarifi N, Aravind J, Kamaraj M, Balakumar S. Viable remediation techniques to cleansing wastewaters comprising endocrine-disrupting compounds. ENVIRONMENTAL RESEARCH 2023; 231:116245. [PMID: 37245568 DOI: 10.1016/j.envres.2023.116245] [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: 04/03/2023] [Revised: 05/16/2023] [Accepted: 05/26/2023] [Indexed: 05/30/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) have recently gained prominence as emerging pollutants due to their significant negative impacts on diverse living forms in ecosystems, including humans, by altering their endocrine systems. EDCs are a prominent category of emerging contaminants in various aquatic settings. Given the growing population and limited access to freshwater resources, their expulsion from aquatic systems is also a severe issue. EDC removal from wastewater depends on the physicochemical properties of the specific EDCs found in each wastewater type and various aquatic environments. Due to these components' chemical, physical, and physicochemical diversity, various approaches based on physical, biological, electrochemical, and chemical procedures have been developed to eliminate them. The objective of this review is to provide the comprehensive overview by selecting recent approaches that showed significant impact on the best available methods for removing EDCs from various aquatic matrices. It is suggested that adsorption by carbon-based materials or bioresources is effective at higher EDC concentrations. Electrochemical mechanization works, but it requires expensive electrodes, continual energy, and chemicals. Due to the lack of chemicals and hazardous byproducts, adsorption and biodegradation are considered environmentally friendly. When combined with synthetic biology and an AI system, biodegradation can efficiently remove EDCs and replace conventional water treatment technologies in the near future. Hybrid in-house methods may reduce EDCs best, depending on the EDC and resources.
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Affiliation(s)
- Narayanan Mahesh
- Department of Chemistry and Biosciences, Srinivasa Ramanujan Centre, SASTRA Deemed to Be University, Kumbakonam, 612001, Tamil Nadu, India
| | - S Shyamalagowri
- P.G. and Research Department of Botany, Pachaiyappas College, Chennai, 600030, Tamil Nadu, India
| | - M K S Pavithra
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638401, Tamil Nadu, India
| | - Abdullah Alodhayb
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Nahed Alarifi
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - J Aravind
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Nagar, Thandalam, Chennai, 602105, Tamil Nadu, India
| | - M Kamaraj
- Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology -Ramapuram Campus, Chennai, 600089, Tamil Nadu, India.
| | - Srinivasan Balakumar
- Department of Chemistry and Biosciences, Srinivasa Ramanujan Centre, SASTRA Deemed to Be University, Kumbakonam, 612001, Tamil Nadu, India.
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Li C, Xue C, Ouyang W, Liu M, Sun Y, Liu H. Identification and synergetic mechanism of TCE, H 2 and O 2 metabolic microorganisms in the joint H 2/O 2 system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 879:163026. [PMID: 36965730 DOI: 10.1016/j.scitotenv.2023.163026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/19/2023] [Accepted: 03/19/2023] [Indexed: 05/17/2023]
Abstract
The sole H2 and O2 usually promote chlorinated hydrocarbons (CHCs) biotransformation by several mechanisms, including reductive dechlorination and aerobic oxidation. However, the mechanism of the CHCs transformation in joint H2 and O2 system (H2/O2 system) is still unclear. In this study, the degradation kinetics of trichloroethene (TCE) were investigated and DNA stable isotope probing (DNA-SIP) were used to explore the synergistic mechanism of functional microorganisms on TCE degradation under the condition of H2/O2 coexistence. In the H2/O2 microcosm, TCE was significantly removed by 13.00 μM within 40 days, much higher than N2, H2 and O2 microcosms, and 1,1-DCE was detected as an intermediate. DNA-SIP technology identified three anaerobic TCE metabolizers, five aerobic TCE metabolizers, nine hydrogen-oxidizing bacteria (HOB), some TCE metabolizers utilizing limited O2, and some anaerobic dechlorinating bacteria reductively using H2 to dechlorinate TCE. It is also confirmed for the first time that 3 OUTs belonging to Methyloversatilis and SH-PL14 can simultaneously utilize H2 and O2 as energy sources to grow and metabolize TCE or 1,1-DCE. HOB may provide carbon sources or electron acceptors or donors for TCE biotransformation. These findings confirm the coexistence of anaerobic and aerobic TCE metabolizers and degraders, which synergistically promoted the conversion of TCE in the joint H2/O2 system. Our results provide more information about the functional microbe resources and synergetic mechanisms for TCE degradation.
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Affiliation(s)
- Cui Li
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430078, PR China
| | - Chen Xue
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430078, PR China
| | - Weiwei Ouyang
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430078, PR China
| | - Minghui Liu
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430078, PR China
| | - Yingtao Sun
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, PR China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hui Liu
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430078, PR China.
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Cui X, Zhao Y, Hao N, Zhao W. A multi-framework for bisphenols based on their high performance and environmental friendliness: Design, screening, and recommendations. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131709. [PMID: 37267645 DOI: 10.1016/j.jhazmat.2023.131709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/04/2023]
Abstract
Bisphenols (BPs) have gained significant attention due to their extensive use in the production of medical equipment, packaging materials, and everyday commodities. Urgent attention is required for assessing and identifying the risks associated with BP exposure to the environment and human health, as well as developing regulatory strategies. In this paper, 29 common BPs were selected as the research object, high-performance BP substitutes with environmental and human health friendliness characteristics were designed and screened. The above eight BP substitutes were considered as examples, and the first-level evaluation indicators of BPs and their substitutes were predicted using a random forest classification/regression model. Subsequently, the key indicators affecting the first-level evaluation indicators were ranked. The ranking results were environmental friendliness (64.30%) > human health risk (18.00%) > functionality (17.69%), indicating that environmental friendliness was the main influencing factor for the first-level evaluation indicators of BPs and their substitutes. Therefore, the study employed density functional theory (DFT) to simulate the biodegradation pathways of BPs and their substitutes in contaminated soil and landfill leachate, using Derivative-50 as an example. Furthermore, the environmental risk associated with the degradation products was evaluated, and regulatory recommendations based on risk identification were proposed.
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Affiliation(s)
- Xiran Cui
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Yuanyuan Zhao
- MOE Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing 102206, China
| | - Ning Hao
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Wenjin Zhao
- College of New Energy and Environment, Jilin University, Changchun 130012, China.
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Eltoukhy A, Jia Y, Lamraoui I, Abo-Kadoum MA, Atta OM, Nahurira R, Wang J, Yan Y. Transcriptome analysis and cytochrome P450 monooxygenase reveal the molecular mechanism of Bisphenol A degradation by Pseudomonas putida strain YC-AE1. BMC Microbiol 2022; 22:294. [PMID: 36482332 PMCID: PMC9733184 DOI: 10.1186/s12866-022-02689-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 11/02/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Bisphenol A (BPA) is a rapid spreading organic pollutant that widely used in many industries especially as a plasticizer in polycarbonate plastic and epoxy resins. BPA reported as a prominent endocrine disruptor compound that possesses estrogenic activity and fulminant toxicity. Pseudomonas putida YC-AE1 was isolated in our previous study and exerted a strong degradation capacity toward BPA at high concentrations; however, the molecular degradation mechanism is still enigmatic. RESULTS We employed RNA sequencing to analyze the differentially expressed genes (DEGs) in the YC-AE1 strain upon BPA induction. Out of 1229 differentially expressed genes, 725 genes were positively regulated, and 504 genes were down-regulated. The pathways of microbial metabolism in diverse environments were significantly enriched among DEGs based on KEGG enrichment analysis. qRT-PCR confirm the involvement of BPA degradation relevant genes in accordance with RNA Seq data. The degradation pathway of BPA in YC-AE1 was proposed with specific enzymes and encoded genes. The role of cytochrome P450 (CYP450) in BPA degradation was further verified. Sever decrease in BPA degradation was recorded by YC-AE1 in the presence of CYP450 inhibitor. Subsequently, CYP450bisdB deficient YC-AE1 strain △ bisdB lost its ability toward BPA transformation comparing with the wild type. Furthermore, Transformation of E. coli with pET-32a-bisdAB empowers it to degrade 66 mg l-1 of BPA after 24 h. Altogether, the results showed the role of CYP450 in biodegradation of BPA by YC-AE1. CONCLUSION In this study we propose the molecular basis and the potential role of YC-AE1cytochrome P450 monooxygenase in BPA catabolism.
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Affiliation(s)
- Adel Eltoukhy
- grid.411303.40000 0001 2155 6022Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assiut, 71524 Egypt ,grid.410727.70000 0001 0526 1937Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yang Jia
- grid.412899.f0000 0000 9117 1462National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, and Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035 China
| | - Imane Lamraoui
- Higher National School of Biotechnology “Toufik Khaznadar” (ENSB), 25000 Constantine, Algeria
| | - M. A. Abo-Kadoum
- grid.411303.40000 0001 2155 6022Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assiut, 71524 Egypt
| | - Omar Mohammad Atta
- grid.411303.40000 0001 2155 6022Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assiut, 71524 Egypt
| | - Ruth Nahurira
- grid.449527.90000 0004 0534 1218Faculty of Science, Kabale University, Kabale, Uganda
| | - Junhuan Wang
- grid.410727.70000 0001 0526 1937Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yanchun Yan
- grid.410727.70000 0001 0526 1937Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
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de Morais Farias J, Krepsky N. Bacterial degradation of bisphenol analogues: an overview. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:76543-76564. [PMID: 36166118 DOI: 10.1007/s11356-022-23035-3] [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: 05/10/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Bisphenol A (BPA) is one of the most produced synthetic monomers in the world and is widespread in the environment. BPA was replaced by bisphenol analogues (BP) because of its adverse effects on life. Bacteria can degrade BPA and other bisphenol analogues (BP), diminishing their environmental concentrations. This study aimed to summarize the knowledge and contribute to future studies. In this review, we surveyed papers on bacterial degradation of twelve different bisphenol analogues published between 1987 and June 2022. A total of 102 original papers from PubMed and Google Scholar were selected for this review. Most of the studies (94.1%, n = 96) on bacterial degradation of bisphenol analogues focused on BPA, and then on bisphenol F (BPF), and bisphenol S (BPS). The number of studies on bacterial degradation of bisphenol analogues increased more than six times from 2000 (n = 2) to 2021 (n = 13). Indigenous microorganisms and the genera Sphingomonas, Sphingobium, and Cupriavidus could degrade several BP. However, few studies focussed on Cupriavidus. The acknowledgement of various aspects of BP bacterial biodegradation is vital for choosing the most suitable microorganisms for the bioremediation of a single BP or a mixture of BP.
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Affiliation(s)
- Julia de Morais Farias
- Laboratory of Water Microbiology (LACQUA), Department of Environmental Science, Institute of Biosciences, Federal University of the State of Rio de Janeiro (UNIRIO), Av. Pasteur, 458, CEP 22290‑240, Rio de Janeiro, RJ, Brazil
| | - Natascha Krepsky
- Laboratory of Water Microbiology (LACQUA), Department of Environmental Science, Institute of Biosciences, Federal University of the State of Rio de Janeiro (UNIRIO), Av. Pasteur, 458, CEP 22290‑240, Rio de Janeiro, RJ, Brazil.
- Graduate Program in Neotropical Biodiversity (PPGBIO), Institute of Biosciences (IBIO), Federal University of the State of Rio de Janeiro (UNIRIO), Av. Pasteur, 458. Urca, CEP: 22.290-255, Rio de Janeiro, RJ, Brazil.
- Institute of Biosciences (IBIO), Graduate Program in Ecotourism and Conservation, Federal University of the State of Rio de Janeiro (UNIRIO), Av. Pasteur, 458. Urca, CEP: 22.290-255, Rio de Janeiro, RJ, Brazil.
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Biotransformation of bisphenol F by white-rot fungus Phanerochaete sordida YK-624 under non-ligninolytic condition. Appl Microbiol Biotechnol 2022; 106:6277-6287. [DOI: 10.1007/s00253-022-12133-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 08/02/2022] [Accepted: 08/11/2022] [Indexed: 11/02/2022]
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Peng X, Zheng Q, Liu L, He Y, Li T, Jia X. Efficient biodegradation of tetrabromobisphenol A by the novel strain Enterobacter sp. T2 with good environmental adaptation: Kinetics, pathways and genomic characteristics. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128335. [PMID: 35121290 DOI: 10.1016/j.jhazmat.2022.128335] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
T2, a gram-positive bacterium capable of rapidly degrading tetrabromobisphenol A (TBBPA), and affiliated with the genus Enterobacter, was isolated for the first time from sludge that had been contaminated for several years. The TBBPA degradation data fitted the first-order model well. Under optimal conditions (pH of 7, temperature of 31 °C, TBBPA concentration of 5 mg L-1, and inoculum size of 5%), 99.4% of the initially added TBBPA was degraded after 48 h. TBBPA degradation fitted the first-order model with the half-life of 3.3 h. These results illustrated that the TBBPA degradation capability of strain T2 was significantly better than that of previously reported bacteria. A total of 17 intermediates were detected, among which five were reported for the first time. Whole-genome sequencing revealed that strain T2 had a chromosome with the total length of 4 854 376 bp and a plasmid with the total length of 21 444 bp. It harbored essential genes responsible for debromination, such as cyp450, gstB, gstA, and HADH, and genes responsible for subsequent complete mineralization, such as bioC, yrrM, Tam, and Ubil. A key protein of haloacid dehalogenases responsible for the biodegradation of TBBPA may also be involved in the regulation of TBBPA degradation in natural environment. In soil bioremediation experiments, strain T2 showed excellent environmental adaptation. It was able to biodegrade TBBPA and its typical intermediate bisphenol A efficiently. Therefore, it could potentially be applied to treat TBBPA-contaminated sites.
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Affiliation(s)
- Xingxing Peng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China.
| | - Qihang Zheng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Lei Liu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yuzhe He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Tianyu Li
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiaoshan Jia
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
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Sun Y, Lyu H, Cheng Z, Wang Y, Tang J. Insight into the mechanisms of ball-milled biochar addition on soil tetracycline degradation enhancement: Physicochemical properties and microbial community structure. CHEMOSPHERE 2022; 291:132691. [PMID: 34755608 DOI: 10.1016/j.chemosphere.2021.132691] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 10/18/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
A set of soil under the addition of ball-milled biochar (BM-biochar) from different feedstocks (wheat straw (WS) and rice husk (RH)) and pyrolysis temperature (300 °C, 500 °C, and 700 °C) was established to analyze the tetracycline (TC) degradation performance enhancement and greenhouse gas carbon dioxide (CO2), and nitrous oxide (N2O) emission reduction from various angles, including physicochemical properties of soil and microbial community structure. After 45 days' incubation, the pH value decreased slightly from 7.34 to 7.22 for WS biochar-treated soil, while slightly increased from 7.34 to 7.50 for RH biochar-treated soil. The lowest KCl-leachable TC concentrations of BMWS700 and RH700 was about 0.0037 mg/L. Ball-milled 500 °C and 700 °C biochars enhanced the removal rate of TC significantly. The maximum reduction of TC was from 2.17 to 0.079 mg/kg, equivalent to 96% removal after ball-milled 500 °C wheat straw biochar (BMWS500) addition, suggesting the promoting effect of biochars on microorganisms for adsorption and degradation of TC. Biochars' addition reduced CO2 and N2O emissions, BM-biochar enlarged this effect under the pyrolysis temperature 500 °C for both feedstock types. Ball milled rice husk biochar pyrolyzed under 500 °C (BMRH500) presented the maximum inhibitory effect CO2 emission. The addition of BM-biochar changed the microbial community and diversity. The relative abundance of bacterium and fungus such as Proteobacteria, Acidobacteria, Chlorofexi, Mortierella, and Chaetomium increased due to BM-biochar addition, which promoted the degradation of TC and gave rise to more healthy soil environment for plant or microbes. The larger specific surface area, π-π interactions, hydrophobic interaction, and hydrogen bonding are account for better adsorption and degradation of TC by BM-biochars. This work elucidated the management of organic contaminants in real soil by BM-biochar.
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Affiliation(s)
- Yanfang Sun
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Honghong Lyu
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China; School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin, 300401, China.
| | - Zi Cheng
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Yizhi Wang
- Tianjin Tianmai Energy-saving Equipment Co., Ltd., Tianjin, 300112, China
| | - Jingchun Tang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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Wang J, Yin R, Zhang X, Wang N, Xiao P, Hirai H, Xiao T. Transcriptomic analysis reveals ligninolytic enzymes of white-rot fungus Phanerochaete sordida YK-624 participating in bisphenol F biodegradation under ligninolytic conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:62390-62397. [PMID: 34195946 DOI: 10.1007/s11356-021-15012-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Bisphenol F (BPF) is widely used in the plastic manufacturing industry as a replacement for bisphenol A (BPA) because BPF and BPA have similar structures and comparable properties. However, BPF is ubiquitously present in the environment and has higher toxicity to humans. This study is the first to report BPF degradation using the white-rot fungus Phanerochaete sordida YK-624 under ligninolytic conditions (pH=4.5, 30 °C). P. sordida YK-624 almost completely degraded BPF within 4 days. Moreover, functional genes involved in BPF degradation were detected by RNA-Seq. Metabolic processes and peroxidases were enriched by GO analysis, and the metabolic pathway was enriched according to the KEGG pathway analysis. These results suggested that P. sordida YK-624 could secrete higher levels of ligninolytic enzymes lignin peroxidase (LiP) and manganese peroxidase (MnP) for BPF degradation. The results indicated that LiPs and MnPs are important for BPF degradation and cytochrome P450s play a small role. Furthermore, reliability of the RNA-Seq results was validated by qRT-PCR.
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Affiliation(s)
- Jianqiao Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Ru Yin
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Xue Zhang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Nana Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Pengfei Xiao
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Hirofumi Hirai
- Faculty of Agriculture, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Tangfu Xiao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China.
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12
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Lumio RT, Tan MA, Magpantay HD. Biotechnology-based microbial degradation of plastic additives. 3 Biotech 2021; 11:350. [PMID: 34221820 PMCID: PMC8217394 DOI: 10.1007/s13205-021-02884-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 06/06/2021] [Indexed: 10/21/2022] Open
Abstract
Plastic additives are agents responsible to the flame resistance, durability, microbial resistance, and flexibility of plastic products. High demand for production and use of plastic additives is associated with environmental accumulation and various health hazards. One of the suitable methods of depleting plastic additive in the environment is bioremediation as it offers cost-efficiency, convenience, and sustainability. Microbial activity is one of the effective ways of detoxifying various compounds as microorganisms can adapt in an environment with high prevalence of pollutants. The present review discusses the use and abundance of these plastic additives, their health-related risks, the microorganisms capable of degrading them, the proposed mechanism of biodegradation, and current innovations capable of improving the efficiency of bioremediation.
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Affiliation(s)
- Rob T. Lumio
- Chemistry Department, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines
| | - Mario A. Tan
- The Graduate School, University of Santo Tomas, Manila, Philippines
- College of Science and Research Center for the Natural and Applied Sciences, University of Santo, Tomas, Manila, Philippines
| | - Hilbert D. Magpantay
- Chemistry Department, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines
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13
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Bacterial Diversity and Community Structure in the Rhizosphere of Four Halophytes. Curr Microbiol 2021; 78:2720-2732. [PMID: 34023980 DOI: 10.1007/s00284-021-02536-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 05/05/2021] [Indexed: 10/21/2022]
Abstract
The study of the rhizosphere microbial community in salinized soils aids in the elucidation of new and important microbial functional groups, which is of great importance in vegetation restoration and ecological reconstruction of salinized soil. The rhizosphere soil bacterial diversity and community structures of four halophytes, including Kalidium foliatum, Lycium ruthenicum, Karelinia caspia and Phragmites australis, typically distributed in the saline-alkaline land of Southern Xinjiang, China, were studied using an Illumina paired-end sequence platform. The study aims to reveal the alpha diversity, species composition, abundance and the differences of rhizosphere bacteria among the four halophytes, explore their correlation with environmental factors. The results showed that the highest bacterial species diversity was associated with P. communis, followed by K. foliatum, K. caspia, and L. ruthenicum. The species richness was the lowest for L. ruthenicum, while the others showed no significant difference. Firmicutes, Proteobacteria, Actinobacteria and Bacteroidetes were the most dominant phyla. And Bacillus and Halomonas were the most common dominant genera. The bacterial communities associated with K. foliatum and K. caspia were similar, while that of L. ruthenicum was significantly different from other halophytes. Soil total nitrogen and total phosphorus, soil organic matter, soil water content, electronic conductivity and pH were identified as the key factors affecting bacterial abundance associated with the assayed halophytes. These results indicate that the four halophytes evaluated in the present study have a similar rhizosphere bacterial community structure due to their being in the same region. However, the bacterial abundance is different among the plant species, and soil properties are the important factors driving the structures of bacterial communities.
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14
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Tong T, Li R, Chen J, Ke Y, Xie S. Bisphenol A biodegradation differs between mudflat and mangrove forest sediments. CHEMOSPHERE 2021; 270:128664. [PMID: 33757276 DOI: 10.1016/j.chemosphere.2020.128664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/22/2020] [Accepted: 10/15/2020] [Indexed: 06/12/2023]
Abstract
Bisphenol A (BPA) is one of the widely detected endocrine disrupting chemicals in coastal sediment. Biodegradation is a vital pathway of BPA elimination in sediment. However, the impact of vegetation on BPA degradation in coastal sediment is still unclear. In this study, the differences of BPA biodegradation and the functional microbial community and metabolic pathway were explored between mangrove forest and mudflat sediments. A nearly complete BPA attenuation was detected in 4 days in mudflat sediment but 8 days in forest sediment. Bacterial abundance varied greatly in different sediment types. Bacterial community structure changed with BPA biodegradation, dependent on sediment type. During the degradation, the proportions of Alphaproteobacteria and Gammaproteobacteria were higher in BPA amended microcosms than in un-amended microcosms. With BPA biodegradation, a substantial increase in Novosphingobium and Croceicoccus occurred in forest sediment and mudflat sediment, respectively. Additionally, two divergent BPA biodegradation pathways were proposed based on functional annotation and KEGG pathway database. The abundance of functional genes also varied with BPA biodegradation, dependent on sediment type. Gene pcaGH decreased, while genes ligK and pcaD increased in both sediment types. Gene pcaB showed a remarkable increase in forest sediment but a decrease in mudflat sediment. Therefore, BPA degradation and the associated microbial community and metabolic pathway differed between mudflat and mangrove forest sediments.
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Affiliation(s)
- Tianli Tong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Ruili Li
- School of Environmental and Energy, Shenzhen Graduate School of Peking University, Shenzhen, 518055, Guangdong, China.
| | - Jianfei Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Yanchu Ke
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Shuguang Xie
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; School of Environmental and Energy, Shenzhen Graduate School of Peking University, Shenzhen, 518055, Guangdong, China.
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15
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Chen J, Wu J, Fan L, Jia R. Studies on the characteristics and mechanism of aerobic biodegradation of tetrabromobisphenol A by Irpex lacteus F17. J Basic Microbiol 2021; 61:419-429. [PMID: 33721360 DOI: 10.1002/jobm.202000732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/14/2021] [Accepted: 03/01/2021] [Indexed: 01/15/2023]
Abstract
The study investigated the characteristics of aerobic degradation of tetrabromobisphenol A (TBBPA) by Irpex lacteus F17 (I. lacteus F17) under four different cometabolic substrates (phenol, glucose, sodium pyruvate, and sodium citrate). The biodegradation of TBBPA by I. lacteus F17 could be enhanced via cometabolism, and glucose (8 g/L) was confirmed to be the optimum carbon source. For different initial solution pH ranging from 3.0 to 8.0, the results showed that I. lacteus F17 could be applied to biodegrade TBBPA in a wide pH range of 4.0-8.0, and the degradation rate could reach the maximum 75.31%, while the debromination rate reached the maximum 12.40% under pH 5.0. In addition, it has been confirmed that Mn2+ (50 μmol/L) could promote the secretion of manganese peroxidase and TBBPA biodegradation efficiency. Seven intermediates were identified by gas chromatography-mass spectrometry analysis, and the possible degradation pathways were proposed, which indicated the biodegradation of TBBPA might be subjected to debromination, β-scission, hydroxylation, deprotonation, and oxidation reactions.
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Affiliation(s)
- Jie Chen
- School of Resources and Environmental Engineering, Anhui University, Hefei, Anhui, China
| | - Juan Wu
- School of Resources and Environmental Engineering, Anhui University, Hefei, Anhui, China
| | - Luosheng Fan
- School of Resources and Environmental Engineering, Anhui University, Hefei, Anhui, China
| | - Rong Jia
- School of Life Science, Anhui University, Hefei, Anhui, China
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16
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Zhao T, Gao Y, Yu T, Zhang Y, Zhang Z, Zhang L, Zhang L. Biodegradation of phenol by a highly tolerant strain Rhodococcus ruber C1: Biochemical characterization and comparative genome analysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111709. [PMID: 33396040 DOI: 10.1016/j.ecoenv.2020.111709] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/12/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
A novel phenol-degrading strain was isolated and identified as Rhodococcus ruber C1. The degradation analysis shows that 1806 mg/L of phenol can be completely degraded by strain C1 within 38 h, and the maximum specific growth rate (μmax=1.527 h-1) and maximum specific phenol degradation rate (qmax=3.674 h-1) indicate its excellent phenol metabolism capability. More importantly, phenol can be degraded by strain C1 in the temperature range of 20-45 °C within 72 h, and with longer degradation time, phenol can be completely degraded even at 10, 15 and 50 °C. The whole genome of strain C1 was sequenced, and a comparative genome analysis of strain C1 with 36 other genomes of Rhodococcus was performed. A remarkable gene family expansion occurred during the evolution of Rhodococcus, and a comprehensive evolutionary picture of Rhodococcus at genomic level was presented. Moreover, the copy number of genes involved in phenol metabolism was compared among genus Rhodococcus, and the results demonstrate high phenol degradation capability of strain C1 at genomic level. These findings suggest that Rhodococcus ruber C1 is a bacterium capable of degrading phenol efficiently in the temperature range of 10-50 °C.
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Affiliation(s)
- Tiantao Zhao
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China; School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Yanhui Gao
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China; School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Tiantian Yu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yunru Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Zhengyi Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Lei Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Lijie Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
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17
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Elersek T, Notersberg T, Kovačič A, Heath E, Filipič M. The effects of bisphenol A, F and their mixture on algal and cyanobacterial growth: from additivity to antagonism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3445-3454. [PMID: 32918687 DOI: 10.1007/s11356-020-10329-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
Bisphenol A (BPA) is, due to its widespread use including the production of plastic materials, an ubiquitous pollutant in the aquatic environment. Due to evidence of adverse BPA effects on the environment and human health, its use has been restricted and replaced by analogues such as bisphenol F (BPF). This study examined the toxicity of BPA, BPF and their mixture towards primary producers, the eukaryotic green alga Pseudokirchneriella subcapitata and the prokaryotic cyanobacterium Synechococcus leopoliensis. The results demonstrated that S. leopoliensis is more sensitive than P. subcapitata, whereas toxic potential of the two BPs is comparable and represents comparable hazard for phytoplankton. The toxicity of the binary mixture was predicted by different models (concentration addition, independent action, combination index and the isobologram method) and compared to experimental data. Additive effect was observed in P. subcapitata over the whole effect concentration range (EC5-EC90), whereas in S. leopoliensis, no pronounced combined effect was observed. The environmental risk characterisation based on the comparison of reported concentrations of BPA and BPF in surface waters to the predicted no-effect concentration values obtained in this study showed that at certain industrial areas, BPA represents environmental risk, whereas BPF does not. However, BPF concentrations in aquatic environment are expected to increase in the future. To enable environmental risk assessment of BP analogues, more data on the toxicity to aquatic species, including combined effect, as well as data on their occurrence in the aquatic environment are needed.Graphical abstract.
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Affiliation(s)
- Tina Elersek
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Večna pot 111, 1000, Ljubljana, Slovenia.
| | - Tilen Notersberg
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Večna pot 111, 1000, Ljubljana, Slovenia
| | - Ana Kovačič
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
- Jožef Stefan, International Postgraduate School, 1000, Ljubljana, Slovenia
| | - Ester Heath
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
- Jožef Stefan, International Postgraduate School, 1000, Ljubljana, Slovenia
| | - Metka Filipič
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Večna pot 111, 1000, Ljubljana, Slovenia
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18
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Lamraoui I, Eltoukhy A, Wang J, Lamraoui M, Ahmed A, Jia Y, Lu T, Yan Y. Biodegradation of Di (2-Ethylhexyl) Phthalate by a novel Enterobacter spp. Strain YC-IL1 Isolated from Polluted Soil, Mila, Algeria. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17207501. [PMID: 33076331 PMCID: PMC7602616 DOI: 10.3390/ijerph17207501] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 01/09/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is one of the phthalic acid ester representatives and is mainly used as a plasticizer to endow polyvinyl chloride plastics with desirable physical properties. It is synthesized in massive amounts worldwide. Many studies have proved the adverse effects of DEHP on human health and wildlife. DEHP is labeled as an endocrine disruptor which causes human reproductive problems. Enterobacter spp. YC-IL1, a novel isolated strain from contaminated soil, was identified by 16S rRNA gene analysis and electronic microscope. It is capable of efficiently degrading DEHP (100%) and a wide range of phthalic acid ester PAEs, particularly those containing side chains with branches, or ring structures such as dutylbenzyl phthalate and dicyclohexyl phthalate, which are hard to degrade, with, respectively, 81.15% and 50.69% degradation after 7 days incubation. YC-IL1 is an acido-tolerant strain which remained in pH values lower than pH 5.0 with the optimum pH 7.0 and temperature 30 °C. The DEHP metabolites were detected using HPLC-QQQ and then the degradation pathway was tentatively proposed. Strain YC-IL1 showed high DEHP degradation rate in artificially contaminated soil with 86% removed in 6 days. These results indicate the application potential of YC-IL1 in bioremediation of PAE-polluted sites, even the acidic ones.
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Affiliation(s)
- Imane Lamraoui
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (I.L.); (T.L.)
| | - Adel Eltoukhy
- Botany and Microbiology Department, Faculty of Science, AL-Azhar University, Assiut 71524, Egypt;
| | - Junhuan Wang
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (Y.J.)
| | - Messaouda Lamraoui
- Department of Microbiology, Faculty of Nature Science and Life, University of Bejaia, Bejaia 0600, Algeria;
| | - Amer Ahmed
- Department of Life Sciences, University of Siena, 53100 Siena, Italy;
| | - Yang Jia
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (Y.J.)
| | - Tiegang Lu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (I.L.); (T.L.)
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (Y.J.)
- Correspondence: ; Tel.: +86-10-8210-9685
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19
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Huang W, Yin H, Yu Y, Lu G, Dang Z, Chen Z. Co-metabolic degradation of tetrabromobisphenol A by Pseudomonas aeruginosa and its auto-poisoning effect caused during degradation process. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 202:110919. [PMID: 32800254 DOI: 10.1016/j.ecoenv.2020.110919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
In this study, Pseudomonas aeruginosa was applied to degrade tetrabromobisphenol A (TBBPA) with glucose as a co-metabolic substrate. Influencing factors of co-metabolic degradation such as pH, TBBPA and glucose concentration were examined and the degradation efficiency under optimal condition reached about 50% on the 7th day. The study also proved that the extracellular action, rather than intracellular one, played a leading role in TBBPA degradation. Five metabolites including debromination and beta-scission products were identified in this study. The extracellular active substance pyocyanin was considered as the origin of H2O2 and OH·. The variation of concentrations of H2O2 and OH· shared the same trend, they increased in the early days and then declined gradually. On the 1st day, the OD600 of P.aeruginosa in the co-metabolic group was 6.0 times higher than the initial value while total organic carbon (TOC) decreased about 78%, which might lead to the occurrence of pyocyanin auto-poisoning. Flow cytometry was applied to detect the cellular state of P.aeruginosa during degradation. The increasing intracellular ROS showed that cells were suffering from oxidative stress and the change of membrane potential revealed that cellular dysfunction had occurred since the 1st day. This research indicated that the toxic effect on P.aeruginosa was probably not directly correlated with TBBPA, but was caused by pyocyanin auto-poisoning.
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Affiliation(s)
- Wantang Huang
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Hua Yin
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China.
| | - Yuanyuan Yu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Guining Lu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhi Dang
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhanghong Chen
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
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20
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He J, Chen Y, Dai L, Yao J, Mei Y, Hrynsphan D, Tatsiana S, Chen J. Rapid and Complete Biodegradation of Acrylic Acid by a Novel Strain Rhodococcus ruber JJ-3: Kinetics, Carbon Balance, and Degradation Pathways. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-019-0465-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Nshimiyimana JB, Khadka S, Zou P, Adhikari S, Proshad R, Thapa A, Xiong L. Study on biodegradation kinetics of di-2-ethylhexyl phthalate by newly isolated halotolerant Ochrobactrum anthropi strain L1-W. BMC Res Notes 2020; 13:252. [PMID: 32448295 PMCID: PMC7247211 DOI: 10.1186/s13104-020-05096-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/18/2020] [Indexed: 11/29/2022] Open
Abstract
Objective Di-2-ethylhexyl phthalate (DEHP) pollution is one of the major environmental concerns all over the world. This research aimed at studying the biodegradation kinetics of DEHP by a newly isolated bacterial strain. Water and sediment samples were collected from Wuhan South Lake and potent bacterial isolates were screened for DEHP degradation, characterized by biochemical, physiological, morphological and 16S rDNA gene sequencing, and optimized under suitable pH, temperature, NaCl and DEHP concentrations. DEHP and its metabolites were quantified by High Performance Liquid Chromatography and their degradation kinetics were studied. Results The newly isolated bacterium was identified as Ochrobactrum anthropi strain L1-W with 99.63% similarity to Ochrobactrum anthropi ATCC 49188. It was capable of utilizing DEHP as the carbon source. The optimum growth temperature, pH, DEHP and NaCl concentration for the strain L1-W were 30 °C, 6, 400 mg/L and 10 g/L respectively. Strain L1-W was capable of degrading almost all (98.7%) of DEHP when the initial concentration was 200 mg/L within a period of 72 h. Besides, it was also found capable of degrading five other phthalates, thus making it a possible candidate for bioremediation of phthalates in the environmental settings.
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Affiliation(s)
- Jean Bosco Nshimiyimana
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China.,Department of Natural Resources and Environment Management, Protestant Institute of Arts and Social Science, Po Box 619, Huye, Rwanda
| | - Sujan Khadka
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China. .,Department of Microbiology, Birendra Multiple Campus, Tribhuvan University, Bharatpur, Chitwan, 44200, Nepal. .,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Piao Zou
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Sanjib Adhikari
- Department of Microbiology, Birendra Multiple Campus, Tribhuvan University, Bharatpur, Chitwan, 44200, Nepal
| | - Ram Proshad
- Key Laboratory of Mountain Surface Process and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Alina Thapa
- State Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Xiong
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
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22
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Jia Y, Eltoukhy A, Wang J, Li X, Hlaing TS, Aung MM, Nwe MT, Lamraoui I, Yan Y. Biodegradation of Bisphenol A by Sphingobium sp. YC-JY1 and the Essential Role of Cytochrome P450 Monooxygenase. Int J Mol Sci 2020; 21:ijms21103588. [PMID: 32438730 PMCID: PMC7278973 DOI: 10.3390/ijms21103588] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/06/2020] [Accepted: 05/08/2020] [Indexed: 01/01/2023] Open
Abstract
Bisphenol A (BPA) is a widespread pollutant threatening the ecosystem and human health. An effective BPA degrader YC-JY1 was isolated and identified as Sphingobium sp. The optimal temperature and pH for the degradation of BPA by strain YC-JY1 were 30 °C and 6.5, respectively. The biodegradation pathway was proposed based on the identification of the metabolites. The addition of cytochrome P450 (CYP) inhibitor 1-aminobenzotriazole significantly decreased the degradation of BPA by Sphingobium sp. YC-JY1. Escherichia coli BL21 (DE3) cells harboring pET28a-bisdAB achieved the ability to degrade BPA. The bisdB gene knockout strain YC-JY1ΔbisdB was unable to degrade BPA indicating that P450bisdB was an essential initiator of BPA metabolism in strain YC-JY1. For BPA polluted soil remediation, strain YC-JY1 considerably stimulated biodegradation of BPA associated with the soil microbial community. These results point out that strain YC-JY1 is a promising microbe for BPA removal and possesses great application potential.
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Affiliation(s)
- Yang Jia
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - Adel Eltoukhy
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - Junhuan Wang
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - Xianjun Li
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - Thet Su Hlaing
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - Mar Mar Aung
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - May Thet Nwe
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
| | - Imane Lamraoui
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Yanchun Yan
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.J.); (A.E.); (J.W.); (X.L.); (T.S.H.); (M.M.A.); (M.T.N.)
- Correspondence: ; Tel.: +86-10-82109685
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23
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Zühlke MK, Schlüter R, Mikolasch A, Henning AK, Giersberg M, Lalk M, Kunze G, Schweder T, Urich T, Schauer F. Biotransformation of bisphenol A analogues by the biphenyl-degrading bacterium Cupriavidusbasilensis - a structure-biotransformation relationship. Appl Microbiol Biotechnol 2020; 104:3569-3583. [PMID: 32125477 PMCID: PMC8282568 DOI: 10.1007/s00253-020-10406-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/08/2020] [Accepted: 01/23/2020] [Indexed: 11/26/2022]
Abstract
Comparative analyses determined the relationship between the structure of bisphenol A (BPA) as well as of seven bisphenol analogues (bisphenol B (BPB), bisphenol C (BPC), bisphenol E (BPE), bisphenol F (BPF), bisphenol Z (BPZ), bisphenol AP (BPAP), bisphenol PH (BPPH)) and their biotransformability by the biphenyl-degrading bacterium Cupriavidus basilensis SBUG 290. All bisphenols were substrates for bacterial transformation with conversion rates ranging from 6 to 98% within 216 h and 36 different metabolites were characterized. Transformation by biphenyl-grown cells comprised four different pathways: (a) formation of ortho-hydroxylated bisphenols, hydroxylating either one or both phenols of the compounds; (b) ring fission; (c) transamination followed by acetylation or dimerization; and (d) oxidation of ring substituents, such as methyl groups and aromatic ring systems, present on the 3-position. However, the microbial attack of bisphenols by C. basilensis was limited to the phenol rings and its substituents, while substituents on the carbon bridge connecting the rings were not oxidized. All bisphenol analogues with modifications at the carbon bridge could be oxidized up to ring cleavage, while substituents at the 3-position of the phenol ring other than hydroxyl groups did not allow this reaction. Replacing one methyl group at the carbon bridge of BPA by a hydrophobic aromatic or alicyclic ring system inhibited both dimerization and transamination followed by acetylation. While most of the bisphenol analogues exhibited estrogenic activity, four biotransformation products tested were not estrogenically active.
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Affiliation(s)
- Marie-Katherin Zühlke
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany
- Institute of Marine Biotechnology, Walter-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Rabea Schlüter
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany.
| | - Annett Mikolasch
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Ann-Kristin Henning
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Martin Giersberg
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, OT Gatersleben, 06466, Seeland, Germany
| | - Michael Lalk
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Straße 4, 17489, Greifswald, Germany
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, OT Gatersleben, 06466, Seeland, Germany
| | - Thomas Schweder
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany
- Institute of Marine Biotechnology, Walter-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Tim Urich
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Frieder Schauer
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
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24
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Eltoukhy A, Jia Y, Nahurira R, Abo-Kadoum MA, Khokhar I, Wang J, Yan Y. Biodegradation of endocrine disruptor Bisphenol A by Pseudomonas putida strain YC-AE1 isolated from polluted soil, Guangdong, China. BMC Microbiol 2020; 20:11. [PMID: 31931706 PMCID: PMC6958771 DOI: 10.1186/s12866-020-1699-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 01/09/2020] [Indexed: 12/21/2022] Open
Abstract
Background Bisphenol A is an important organic chemical as an intermediate, final and inert ingredient in manufacturing of many important products like polycarbonate plastics, epoxy resins, flame retardants, food–drink packaging coating, and other. BPA is an endocrine disruptor compound that mimics the function of estrogen causing damage to reproductive organs. Bacterial degradation has been consider as a cost effective and eco-friendly method for BPA degradation compared with physical and chemical methods. This study aimed to isolate and identify bacterial strain capable to degrade and tolerate high concentrations of this pollutant, studying the factors affecting the degradation process and study the degradation mechanism of this strain. Results YC-AE1 is a Gram negative bacterial strain isolated from soil and identified as Pseudomonas putida by 16S rRNA gene sequence and BIOLOG identification system. This strain found to have a high capacity to degrade the endocrine disruptor Bisphenol A (BPA). Response surface methodology using central composite design was used to statistically optimize the environmental factors during BPA degradation and the results obtained by significant model were 7.2, 30 °C and 2.5% for optimum initial pH, temperature and inoculum size, respectively. Prolonged incubation period with low NaCl concentration improve the biodegradation of BPA. Analysis of variance (ANOVA) showed high coefficient of determination, R2 and Adj-R2 which were 0.9979 and 0.9935, respectively. Substrate analysis found that, strain YC-AE1 could degrade a wide variety of bisphenol A-related pollutants such as bisphenol B, bisphenol F, bisphenol S, Dibutyl phthalate, Diethylhexyl phthalate and Diethyl phthalate in varying proportion. Pseudomonas putida YC-AE1 showed high ability to degrade a wide range of BPA concentrations (0.5–1000 mg l− 1) with completely degradation for 500 mg l− 1 within 72 h. Metabolic intermediates detected in this study by HPLC-MS were identified as 4,4-dihydroxy-alpha-methylstilbene, p-hydroxybenzaldeyde, p-hydroxyacetophenone, 4-hydroxyphenylacetate, 4-hydroxyphenacyl alcohol, 2,2-bis(4-hydroxyphenyl)-1-propanol, 1,2-bis(4-hydroxyphenyl)-2-propanol and 2,2-bis(4-hydroxyphenyl) propanoate. Conclusions This study reports Pseudomonas putida YC-AE1 as BPA biodegrader with high performance in degradation and tolerance to high BPA concentration. It exhibited strong degradation capacity and prominent adaptability towards a wide range of environmental conditions. Moreover, it degrades BPA in a short time via two different degradation pathways.
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Affiliation(s)
- Adel Eltoukhy
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China.,Botany and Microbiology Department, Faculty of Science, AL-Azhar University, Assiut, 71524, Egypt
| | - Yang Jia
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ruth Nahurira
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - M A Abo-Kadoum
- Botany and Microbiology Department, Faculty of Science, AL-Azhar University, Assiut, 71524, Egypt.,Institute of Modern Biopharmaceuticals, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Ibatsam Khokhar
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Junhuan Wang
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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25
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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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26
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Jia Y, Wang J, Ren C, Nahurira R, Khokhar I, Wang J, Fan S, Yan Y. Identification and characterization of a meta-cleavage product hydrolase involved in biphenyl degradation from Arthrobacter sp. YC-RL1. Appl Microbiol Biotechnol 2019; 103:6825-6836. [PMID: 31240368 DOI: 10.1007/s00253-019-09956-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/25/2019] [Accepted: 05/28/2019] [Indexed: 12/27/2022]
Abstract
Polychlorinated biphenyls (PCBs) are a group of persistent organic pollutants (POPs) widely existing in the environment. Arthrobacter sp. YC-RL1 is a biphenyl-degrading bacterium that shows metabolic versatility towards aromatic compounds. A 2-hydroxy-6-oxo-6-phenylhexa-2, 4-dienoate (HOPDA) hydrolase (BphD) gene involved in the biodegradation of biphenyl was cloned from strain YC-RL1 and heterologously expressed in Escherichia coli BL21 (DE3). The recombinant BphDYC-RL1 was purified and characterized. BphDYC-RL1 showed the highest activity at 45 °C and pH 7. It was stable under a wide range of temperature (20-50 °C). The enzyme had a Km value of 0.14 mM, Kcat of 11.61 s-1, and Vmax of 0.027 U/mg. Temperature dependence catalysis exhibited a biphasic Arrhenius Plot with a transition at 20 °C. BphDYC-RL1 was inactivated by SDS, Tween 20, Tween 80, Trition X-100, DTT, CHAPS, NBS, PMSF, and DEPC, but insensitive to EDTA. Site-directed mutagenesis of the active-site residues revealed that the catalytic triad residues (Ser115, His275, and Asp247) of BphDYC-RL1 were necessary for its activity. The investigation of BphDYC-RL1 not only provides new potential enzyme resource for the biodegradation of biphenyl but also helps deepen our understanding on the catalytic process and mechanism.
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Affiliation(s)
- Yang Jia
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Junhuan Wang
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chao Ren
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ruth Nahurira
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ibatsam Khokhar
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jiayi Wang
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shuanghu Fan
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanchun Yan
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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27
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Ren L, Jia Y, Zhang R, Lin Z, Zhen Z, Hu H, Yan Y. Insight Into Metabolic Versatility of an Aromatic Compounds-Degrading Arthrobacter sp. YC-RL1. Front Microbiol 2018; 9:2438. [PMID: 30364317 PMCID: PMC6193132 DOI: 10.3389/fmicb.2018.02438] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/24/2018] [Indexed: 01/11/2023] Open
Abstract
The genus Arthrobacter is ubiquitously distributed in different natural environments. Many xenobiotic-degrading Arthrobacter strains have been isolated and described; however, few have been systematically characterized with regard to multiple interrelated metabolic pathways and the genes that encode them. In this study, the biodegradability of seven aromatic compounds by Arthrobacter sp. YC-RL1 was investigated. Strain YC-RL1 could efficiently degrade p-xylene (PX), naphthalene, phenanthrene, biphenyl, p-nitrophenol (PNP), and bisphenol A (BPA) under both separated and mixed conditions. Based on the detected metabolic intermediates, metabolic pathways of naphthalene, biphenyl, PNP, and BPA were proposed, which indicated that strain YC-RL1 harbors systematic metabolic pathways toward aromatic compounds. Further, genomic analysis uncovered part of genes involved in the proposed pathways. Both intradiol and extradiol ring-cleavage dioxygenase genes were identified in the genome of strain YC-RL1. Meanwhile, gene clusters predicted to encode the degradation of biphenyl (bph), para-substituted phenols (npd) and protocatechuate (pca) were identified, and bphA1A2BCD was proposed to be a novel biphenyl-degrading gene cluster. The complete metabolic pathway of biphenyl was deduced via intermediates and functional gene analysis (bph and pca gene clusters). One of the these genes encoding ring-cleavage dioxygenase in bph gene cluster, a predicted 2,3-dihydroxybiphenyl 1,2-dioxygenase (BphC) gene, was cloned and its activity was confirmed by heterologous expression. This work systematically illuminated the metabolic versatility of aromatic compounds in strain YC-RL1 via the combination of metabolites identification, genomics analysis and laboratory experiments. These results suggested that strain YC-RL1 might be a promising candidate for the bioremediation of aromatic compounds pollution sites.
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Affiliation(s)
- Lei Ren
- Agricultural College, Guangdong Ocean University, Zhanjiang, China.,Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yang Jia
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Rui Zhang
- Agricultural College, Guangdong Ocean University, Zhanjiang, China.,Shenzhen Research Institute of Guangdong Ocean University, Shenzhen, China
| | - Zhong Lin
- Agricultural College, Guangdong Ocean University, Zhanjiang, China.,Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Zhen Zhen
- Agricultural College, Guangdong Ocean University, Zhanjiang, China
| | - Hanqiao Hu
- Agricultural College, Guangdong Ocean University, Zhanjiang, China
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
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28
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Biodegradation of Di-(2-ethylhexyl) Phthalate by Rhodococcus ruber YC-YT1 in Contaminated Water and Soil. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15050964. [PMID: 29751654 PMCID: PMC5982003 DOI: 10.3390/ijerph15050964] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/29/2018] [Accepted: 05/03/2018] [Indexed: 11/17/2022]
Abstract
Di-(2-ethylehxyl) phthalate (DEHP) is one of the most broadly representative phthalic acid esters (PAEs) used as a plasticizer in polyvinyl chloride (PVC) production, and is considered to be an endocrine-disrupting chemical. DEHP and its monoester metabolites are responsible for adverse effects on human health. An efficient DEHP-degrading bacterial strain Rhodococcus ruber YC-YT1, with super salt tolerance (0⁻12% NaCl), is the first DEHP-degrader isolated from marine plastic debris found in coastal saline seawater. Strain YC-YT1 completely degraded 100 mg/L DEHP within three days (pH 7.0, 30 °C). According to high-performance liquid chromatography⁻mass spectrometry (HPLC-MS) analysis, DEHP was transformed by strain YC-YT1 into phthalate (PA) via mono (2-ethylehxyl) phthalate (MEHP), then PA was used for cell growth. Furthermore, YC-YT1 metabolized initial concentrations of DEHP ranging from 0.5 to 1000 mg/L. Especially, YC-YT1 degraded up to 60% of the 0.5 mg/L initial DEHP concentration. Moreover, compared with previous reports, strain YC-YT1 had the largest substrate spectrum, degrading up to 13 kinds of PAEs as well as diphenyl, p-nitrophenol, PA, benzoic acid, phenol, protocatechuic acid, salicylic acid, catechol, and 1,2,3,3-tetrachlorobenzene. The excellent environmental adaptability of strain YC-YT1 contributed to its ability to adjust its cell surface hydrophobicity (CSH) so that 79.7⁻95.9% of DEHP-contaminated agricultural soil, river water, coastal sediment, and coastal seawater were remedied. These results demonstrate that R. ruber YC-YT1 has vast potential to bioremediate various DEHP-contaminated environments, especially in saline environments.
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29
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Nahurira R, Ren L, Song J, Jia Y, Wang J, Fan S, Wang H, Yan Y. Degradation of Di(2-Ethylhexyl) Phthalate by a Novel Gordonia alkanivorans Strain YC-RL2. Curr Microbiol 2017; 74:309-319. [PMID: 28078431 DOI: 10.1007/s00284-016-1159-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 11/08/2016] [Indexed: 11/28/2022]
Abstract
One bacterial strain, YC-RL2, isolated from petroleum-contaminated soil, could utilize environmental hormone Di(2-Ethylhexyl) phthalate (DEHP) as a sole carbon source for growth. Strain YC-RL2 was identified as Gordonia alkanivorans by 16S rRNA gene analysis and Biolog tests. The effects of environmental factors which might affect the degrading process were optimized at 30 °C and pH 8.0. Strain YC-RL2 showed superior halotolerance and could tolerate up to 0-5% NaCl in trace element medium supplemented with DEHP, although the DEHP degradation rates slowed as NaCl concentration increased. It also showed an outstanding performance in a wide range of pH (6.0-11.0). Meanwhile, strain YC-RL2 was able to withstand high concentrations of DEHP (from 100 to 800 mg/L), and the degradation rates were all above 94%. The DEHP intermediates were detected by HPLC-MS, and the degradation pathway was deduced tentatively. DEHP was transformed into phthalic acid (PA) via mono (2-ethylhexyl) phthalate (MEHP), and PA was further utilized for growth via benzoic acid (BA). The enzyme expected to catalyze the hydrolysis of MEHP to PA was identified from strain YC-RL2. Further investigation found that the enzyme could catalyze the transformation of a wide range of monoalkyl phthalates to PA. This study is the first report about species G. alkanivorans which could degrade several kinds of phthalic acid esters (PAEs), and indicates its application potential for bioremediation of PAE-polluted sites.
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Affiliation(s)
- Ruth Nahurira
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Lei Ren
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jinlong Song
- Chinese Academy of Fishery Sciences, Beijing, 100141, China
| | - Yang Jia
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Junhuan Wang
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shuanghu Fan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Haisheng Wang
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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30
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Im J, Löffler FE. Fate of Bisphenol A in Terrestrial and Aquatic Environments. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:8403-16. [PMID: 27401879 DOI: 10.1021/acs.est.6b00877] [Citation(s) in RCA: 162] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Bisphenol A (2,2-bis[4-hydroxyphenyl]propane, BPA), the monomer used to produce polycarbonate plastic and epoxy resins, is weakly estrogenic and therefore of environmental and human health interest. Due to the high production volumes and disposal of products made from BPA, polycarbonate plastic and epoxy resins, BPA has entered terrestrial and aquatic environments. In the presence of oxygen, diverse taxa of bacteria, fungi, algae and even higher plants metabolize BPA, but anaerobic microbial degradation has not been documented. Recent reports demonstrated that abiotic processes mediate BPA transformation and mineralization in the absence of oxygen, indicating that BPA is susceptible to degradation under anoxic conditions. This review summarizes biological and nonbiological processes that lead to BPA transformation and degradation, and identifies research needs to advance predictive understanding of the longevity of BPA and its transformation products in environmental systems.
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Affiliation(s)
- Jeongdae Im
- Department of Microbiology, University of Massachusetts , Amherst, Massachusetts 01002, United States
| | - Frank E Löffler
- Center for Environmental Biotechnology, University of Tennessee , Knoxville, Tennessee 37996, United States
- Department of Microbiology, University of Tennessee , Knoxville, Tennessee 37996, United States
- Department of Civil and Environmental Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
- University of Tennessee and Oak Ridge National Laboratory (UT-ORNL) Joint Institute for Biological Sciences (JIBS) and Biosciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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31
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Ren L, Jia Y, Ruth N, Qiao C, Wang J, Zhao B, Yan Y. Biodegradation of phthalic acid esters by a newly isolated Mycobacterium sp. YC-RL4 and the bioprocess with environmental samples. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:16609-16619. [PMID: 27178296 DOI: 10.1007/s11356-016-6829-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
Bacterial strain YC-RL4, capable of utilizing phthalic acid esters (PAEs) as the sole carbon source for growth, was isolated from petroleum-contaminated soil. Strain YC-RL4 was identified as Mycobacterium sp. by 16S rRNA gene analysis and Biolog tests. Mycobacterium sp. YC-RL4 could rapidly degrade dibutyl phthalate (DBP), diethyl phthalate (DEP), dimethyl phthalate (DMP), dicyclohexyl phthalate (DCHP), and di-(2-ethylhexyl) phthalate (DEHP) under both individual and mixed conditions, and all the degradation rates were above 85.0 % within 5 days. The effects of environmental factors which might affect the degrading process were optimized as 30 °C and pH 8.0. The DEHP metabolites were detected by HPLC-MS and the degradation pathway was deduced tentatively. DEHP was transformed into phthalic acid (PA) via mono (2-ethylhexyl) phthalate (MEHP) and PA was further utilized for growth via benzoic acid (BA) degradation pathway. Cell surface hydrophobicity (CSH) assays illuminated that the strain YC-RL4 was of higher hydrophobicity while grown on DEHP and CSH increased with the higher DEHP concentration. The degradation rates of DEHP by strain YC-RL4 in different environmental samples was around 62.0 to 83.3 % and strain YC-RL4 survived well in the soil sample. These results suggested that the strain YC-RL4 could be used as a potential and efficient PAE degrader for the bioremediation of contaminated sites.
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Affiliation(s)
- Lei Ren
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yang Jia
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Nahurira Ruth
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Cheng Qiao
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Junhuan Wang
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Baisuo Zhao
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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