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Werheni Ammeri R, Di Rauso Simeone G, Hidri Y, Abassi MS, Mehri I, Costa S, Hassen A, Rao MA. Combined bioaugmentation and biostimulation techniques in bioremediation of pentachlorophenol contaminated forest soil. CHEMOSPHERE 2022; 290:133359. [PMID: 34933026 DOI: 10.1016/j.chemosphere.2021.133359] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 12/12/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Pentachlorophenol (PCP) is quite persistent in the environment and severely affects different ecosystems including forest soil. The main objective of this work was to study different bioremediation processes of artificially PCP (100 mg kg-1) contaminated forest soil (Sc). In fact, we used bioaugmentation by adding two different bacterial consortia B1 and B2, biostimulation procedures by amendments based on forest compost (FC), municipal solid waste compost (MC), sewage sludge (SS), and phosphate, and their combined treatments. Soil physical and chemical properties, residual PCP, soil microbial biomass carbon, soil respiration and some enzymatic activities at zero time and after 30 d of incubation, were evaluated. A net reduction of PCP, 71% of the initial concentration, after 30 d-incubation occurred in the sample Sc+B1+FC, as the best performance among all treatments, due to natural attenuation, immobilization of PCP molecules in the forest soil through organic amendments, and the action of the exogenous microbial consortium B1. The single application of FC or B1 led to a depletion of PCP concentration of 52% and 41%, respectively. Soil microbial biomass carbon decreased in PCP contaminated soil but it increased when organic amendment also in combination with microbial consortia was carried out as bioremediation action. Soil respiration underwent no changes in contaminated soil and increased under FC based bioremediation treatment. These results demonstrate that the combined treatments of biostimulation and bioaugmentation might be a promising process for remediation of PCP contaminated soil.
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Affiliation(s)
- Rim Werheni Ammeri
- University of Mathematical, Physical and Natural Sciences of Tunis el Manar, Faculty of Sciences of Tunis (FST), Tunisia; Laboratory Wastewater Treatment and Research Center of Water Technologies, Technopark Borj-Cédria, PO Box 273, Soliman, 8020, Tunisia
| | | | - Yassine Hidri
- Integrated Olive Oil Production Laboratory (LR 16IO3), Cité Mahrajène, BP. 208, 1082, Tunis, Tunisia
| | - Mohamed Salah Abassi
- Institute Tunis El Manar, Institute of Veterinary Research of Tunisia, 20 Street Jebel Lakhdhar, Bab Saadoun, Tunis, 1006, Tunisia
| | - Ines Mehri
- Laboratory Wastewater Treatment and Research Center of Water Technologies, Technopark Borj-Cédria, PO Box 273, Soliman, 8020, Tunisia
| | - Sara Costa
- Dipartimento di Agraria Università degli Studi di Napoli Federico II, 80055, Portici, Italy
| | - Abdennaceur Hassen
- Laboratory Wastewater Treatment and Research Center of Water Technologies, Technopark Borj-Cédria, PO Box 273, Soliman, 8020, Tunisia
| | - Maria A Rao
- Dipartimento di Agraria Università degli Studi di Napoli Federico II, 80055, Portici, Italy
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Kumar B, Verma VK, Mishra M, Kakkar V, Tiwari A, Kumar S, Yadav VP, Gargava P. Assessment of persistent organic pollutants in soil and sediments from an urbanized flood plain area. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:3375-3392. [PMID: 33550469 DOI: 10.1007/s10653-021-00839-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 01/23/2021] [Indexed: 06/12/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and phenolic compounds (PCs) are persistent organic compounds. Contamination of these potentially toxic organic pollutants in soils and sediments is most studied environmental compartments. In recent past, studies were carried out on PAHs, OCPs and PCs in various soils and sediments in India. But, this is the first study on these pollutants in soils and sediments from an urbanized river flood plain area in Delhi, India. During 2018, a total of fifty-four samples including twenty-seven each of soil and sediment were collected and analyzed for thirteen priority PAHs, four OCPs and six PCs. The detected concentration of ∑PAHs, ∑OCPs and ∑PCs in soils ranged between 473 and 1132, 13 and 41, and 639 and 2112 µg/kg, respectively, while their concentrations in sediments ranged between 1685 and 4010, 4.2 and 47, and 553 and 20,983 µg/kg, respectively. PAHs with 4-aromatic rings were the dominant compounds, accounting for 51 and 76% of total PAHs in soils and sediments, respectively. The contribution of seven carcinogen PAHs (7CPAHs) in soils and sediments accounted for 43% and 61%, respectively, to ∑PAHs. Among OCPs, p, p'-DDT was the dominant compound in soils, while α-HCH was found to be dominated in sediments. The concentrations of ∑CPs (chlorophenols) were dominated over ∑NPs (nitrophenols) in both the matrices. Various diagnostic tools were applied for the identification of their possible sources in soil and sediments. The observed concentrations of PAHs, OCPs and PCs were more or less comparable with the recently reports from various locations around the world including India. Soil quality guidelines and consensus-based sediment quality guidelines were applied for the assessment of ecotoxicological health effect.
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Affiliation(s)
- Bhupander Kumar
- Central Pollution Control Board, East Arjun Nagar, Delhi, 110032, India.
| | | | - Meenu Mishra
- Central Pollution Control Board, East Arjun Nagar, Delhi, 110032, India
| | - Vatsala Kakkar
- School of Environment Management, GGS Indraprastha University, Dwarka, Delhi, 110078, India
| | - Amrapali Tiwari
- School of Environment Management, GGS Indraprastha University, Dwarka, Delhi, 110078, India
| | - Sanjay Kumar
- Central Pollution Control Board, East Arjun Nagar, Delhi, 110032, India
| | | | - Prashant Gargava
- Central Pollution Control Board, East Arjun Nagar, Delhi, 110032, India
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3
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Alañón ME, Alarcón M, Díaz-Maroto IJ, Pérez-Coello MS, Díaz-Maroto MC. Corky off-flavor compounds in cork planks at different storage times before processing. Influence on the quality of the final stoppers. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:4735-4742. [PMID: 33491777 DOI: 10.1002/jsfa.11119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/11/2021] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Cork companies store cork planks before processing them for a minimum of 6 months to dry up and to stabilize their texture and chemical composition, although many companies extend this storage period up to 12 months. However, there is no information about the influence of this seasoning period on their 'corky' off flavors. For this reason, the main compounds responsible for the 'cork taint' of planks stored before processing from 6 to 12 months were investigated. RESULTS Four haloanisoles and three halophenols were identified: 2,4,6-trichloroanisole (TCA), 2,3,4,6-tetrachloroanisole (TeCA), pentachloroanisole (PCA), 2,4,6-tribromoanisole (TBA), 2,4,6-trichlorophenol (TCP), 2,3,4,6-tetrachlorophenol (TeCP), and 2,4,6-tribromophenol (TBP). All of the planks presented some haloanisole or halophenol after 6 and 9 months of storage, which practically disappeared after a year of storage. These compounds were only detected in the cork stoppers made from planks with 6 and 9 months of storage. Of the alkylmethoxypyrazines, 2-methoxy-3,5-dimethylpyrazine (MDMP), 3-isopropyl-2-methoxypyrazine (IPMP), and 3-isobutyl-2-methoxypyrazine (IBMP) were identified. The MDMP was detected in a larger number of planks with 6 months of storage and at higher concentrations than IPMP and IBMP. However, MDMP was not detected in the cork stoppers made from planks at 6, 9, and 12 months of storage. CONCLUSION A storage time of 6 months before processing of raw cork planks would be sufficient to obtain cork stoppers with low concentrations of corky off-flavor compounds. An increase in storage up to 9 or 12 months would result in practically 'cork taint'-free natural stoppers. © 2021 Society of Chemical Industry.
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Affiliation(s)
- M Elena Alañón
- Food Technology, Higher Technical School of Agronomic Engineering, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Marina Alarcón
- Food Technology, Faculty of Chemical Sciences and Technologies, Regional Institute for Applied Scientific Research (IRICA), University of Castilla-La Mancha, Ciudad Real, Spain
| | - Ignacio J Díaz-Maroto
- Departamento de Ingeniería Agroforestal, Escuela Politécnica Superior, Campus Universitario s/n, Universidad de Santiago de Compostela, Lugo, Spain
| | - M Soledad Pérez-Coello
- Food Technology, Faculty of Chemical Sciences and Technologies, Regional Institute for Applied Scientific Research (IRICA), University of Castilla-La Mancha, Ciudad Real, Spain
| | - M Consuelo Díaz-Maroto
- Food Technology, Faculty of Chemical Sciences and Technologies, Regional Institute for Applied Scientific Research (IRICA), University of Castilla-La Mancha, Ciudad Real, Spain
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Khattab TA, Aly SA, Klapötke TM. Naked-eye facile colorimetric detection of alkylphenols using Fe(III)-impregnated silica-based strips. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0409-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Varela A, Martins C, Silva Pereira C. A three-act play: pentachlorophenol threats to the cork oak forest soils mycobiome. Curr Opin Microbiol 2017; 37:142-149. [PMID: 28704686 DOI: 10.1016/j.mib.2017.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 06/21/2017] [Indexed: 12/27/2022]
Abstract
Atmospheric release of persistent organic pollutants (POPs) constitutes a silent threat through chronic contamination of soils at global scale; yet fundamental understanding of their occurrence, sources and fate is still largely lacking. Similar to a three act play, this review comprises Setup, Confrontation and Resolution. The first emphasises the eighty years of the history of pentachlorophenol (PCP) usage, only recently classified as POP. The second focus on active sources of PCP pollution, including inside cork oak forests in N.W. Tunisia; a threat partially neutralised by the soil microbial diversity, especially fungi. As Resolution, the need for improved knowledge on the global distribution and impacts of PCP in soil microbial diversity as means to preserve the multi-functionality of terrestrial ecosystem is emphasised.
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Affiliation(s)
- Adélia Varela
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal; INIAV, Av. da República, Quinta do Marquês, 2784-505 Oeiras, Portugal
| | - Celso Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Cristina Silva Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
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Ali MB, Barras A, Addad A, Sieber B, Elhouichet H, Férid M, Szunerits S, Boukherroub R. Co2SnO4 nanoparticles as a high performance catalyst for oxidative degradation of rhodamine B dye and pentachlorophenol by activation of peroxymonosulfate. Phys Chem Chem Phys 2017; 19:6569-6578. [DOI: 10.1039/c6cp08576h] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spinel Co2SnO4 NPs, prepared by hydrothermal process, are applied for PMS activation for organic pollutants degradation.
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Affiliation(s)
| | | | - Ahmed Addad
- UMET
- UMR CNRS 8207
- Université Lille 1
- 59655 Villeneuve d'Ascq Cédex
- France
| | - Brigitte Sieber
- UMET
- UMR CNRS 8207
- Université Lille 1
- 59655 Villeneuve d'Ascq Cédex
- France
| | - Habib Elhouichet
- Laboratoire de Physico-Chimie des Matériaux Minéraux et leurs Applications
- Centre National de Recherches en Sciences des Matériaux
- B.P. 95 Hammam-Lif
- Tunisia
- Département de Physique
| | - Mokhtar Férid
- Laboratoire de Physico-Chimie des Matériaux Minéraux et leurs Applications
- Centre National de Recherches en Sciences des Matériaux
- B.P. 95 Hammam-Lif
- Tunisia
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7
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Recent developments in the analysis of musty odour compounds in water and wine: A review. J Chromatogr A 2016; 1428:72-85. [DOI: 10.1016/j.chroma.2015.09.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/01/2015] [Accepted: 09/03/2015] [Indexed: 02/05/2023]
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8
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Das S, Pettersson BMF, Behra PRK, Ramesh M, Dasgupta S, Bhattacharya A, Kirsebom LA. Characterization of Three Mycobacterium spp. with Potential Use in Bioremediation by Genome Sequencing and Comparative Genomics. Genome Biol Evol 2015; 7:1871-86. [PMID: 26079817 PMCID: PMC4524478 DOI: 10.1093/gbe/evv111] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
We provide the genome sequences of the type strains of the polychlorophenol-degrading Mycobacterium chlorophenolicum (DSM43826), the degrader of chlorinated aliphatics Mycobacterium chubuense (DSM44219) and Mycobacterium obuense (DSM44075) that has been tested for use in cancer immunotherapy. The genome sizes of M. chlorophenolicum, M. chubuense, and M. obuense are 6.93, 5.95, and 5.58 Mb with GC-contents of 68.4%, 69.2%, and 67.9%, respectively. Comparative genomic analysis revealed that 3,254 genes are common and we predicted approximately 250 genes acquired through horizontal gene transfer from different sources including proteobacteria. The data also showed that the biodegrading Mycobacterium spp. NBB4, also referred to as M. chubuense NBB4, is distantly related to the M. chubuense type strain and should be considered as a separate species, we suggest it to be named Mycobacterium ethylenense NBB4. Among different categories we identified genes with potential roles in: biodegradation of aromatic compounds and copper homeostasis. These are the first nonpathogenic Mycobacterium spp. found harboring genes involved in copper homeostasis. These findings would therefore provide insight into the role of this group of Mycobacterium spp. in bioremediation as well as the evolution of copper homeostasis within the Mycobacterium genus.
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Affiliation(s)
- Sarbashis Das
- Department of Cell and Molecular Biology, Uppsala University, Sweden
| | | | | | - Malavika Ramesh
- Department of Cell and Molecular Biology, Uppsala University, Sweden
| | - Santanu Dasgupta
- Department of Cell and Molecular Biology, Uppsala University, Sweden
| | - Alok Bhattacharya
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Leif A Kirsebom
- Department of Cell and Molecular Biology, Uppsala University, Sweden
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9
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Varela A, Martins C, Núñez O, Martins I, Houbraken JAMP, Martins TM, Leitão MC, McLellan I, Vetter W, Galceran MT, Samson RA, Hursthouse A, Silva Pereira C. Understanding fungal functional biodiversity during the mitigation of environmentally dispersed pentachlorophenol in cork oak forest soils. Environ Microbiol 2015; 17:2922-34. [PMID: 25753337 DOI: 10.1111/1462-2920.12837] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 02/26/2015] [Indexed: 01/19/2023]
Abstract
Pentachlorophenol (PCP) is globally dispersed and contamination of soil with this biocide adversely affects its functional biodiversity, particularly of fungi - key colonizers. Their functional role as a community is poorly understood, although a few pathways have been already elucidated in pure cultures. This constitutes here our main challenge - elucidate how fungi influence the pollutant mitigation processes in forest soils. Circumstantial evidence exists that cork oak forests in N. W. Tunisia - economically critical managed forests are likely to be contaminated with PCP, but the scientific evidence has previously been lacking. Our data illustrate significant forest contamination through the detection of undefined active sources of PCP. By solving the taxonomic diversity and the PCP-derived metabolomes of both the cultivable fungi and the fungal community, we demonstrate here that most strains (predominantly penicillia) participate in the pollutant biotic degradation. They form an array of degradation intermediates and by-products, including several hydroquinone, resorcinol and catechol derivatives, either chlorinated or not. The degradation pathway of the fungal community includes uncharacterized derivatives, e.g. tetrachloroguaiacol isomers. Our study highlights fungi key role in the mineralization and short lifetime of PCP in forest soils and provide novel tools to monitor its degradation in other fungi dominated food webs.
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Affiliation(s)
- Adélia Varela
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal.,Instituto Nacional de Investigação Agrária e Veterinária, Av. da República, Quinta do Marquês, 2784-505, Oeiras, Portugal
| | - Celso Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - Oscar Núñez
- Department of Analytical Chemistry, University of Barcelona, Diagonal 645, E-08028, Barcelona, Spain.,Serra Húnter Programme, Generalitat de Catalunya, Barcelona, Spain
| | - Isabel Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - Jos A M P Houbraken
- CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167-3508AD, Utrecht, The Netherlands
| | - Tiago M Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
| | - M Cristina Leitão
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
| | - Iain McLellan
- Institute of Biomedical and Environmental Health Research, School of Science and Sport, University of the West of Scotland, Paisley Campus, PA1 2BE, Paisley, UK
| | - Walter Vetter
- Institute of Food Chemistry (170b), University of Hohenheim, Stuttgart, Germany
| | - M Teresa Galceran
- Department of Analytical Chemistry, University of Barcelona, Diagonal 645, E-08028, Barcelona, Spain
| | - Robert A Samson
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal.,CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167-3508AD, Utrecht, The Netherlands
| | - Andrew Hursthouse
- Institute of Biomedical and Environmental Health Research, School of Science and Sport, University of the West of Scotland, Paisley Campus, PA1 2BE, Paisley, UK
| | - Cristina Silva Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal.,Institute of Food Chemistry (170b), University of Hohenheim, Stuttgart, Germany
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Pérez-Alfaro JE, González-Blanco G, Sierra-Palacios E, Marcial-Quino J, Beristain-Cardoso R. Acclimation of nitrifying biomass and its effect on 2-chlorophenol removal. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:277-282. [PMID: 25633952 DOI: 10.2166/wst.2014.508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The metabolic and kinetic behavior of a nitrifying sludge exposed to 2-chlorophenol (2-CP) was evaluated in batch cultures. Two kinds of nitrifying culture were used; one acclimated to 4-methylphenol (4-mp), and the other unacclimated to 4-mp. The unacclimated culture was affected adversely by the 2-CP's presence, since neither nitrification nor 2-CP oxidation was observed. Nonetheless, the acclimated culture showed metabolic capacity to nitrify and mineralize 2-CP. Ammonium removal was 100%, with a nitrifying yield of 0.92 ± 0.04 mg NO(3)(-)-N/mg NH(4)(+)-N consumed. The consumption efficiency for 2-CP was 100% and the halogenated compound was mineralized to CO2. Denaturing gradient gel electrophoresis (DGGE) patterns showed the shift in microbial community structure, indicating that microbial diversity was due to the acclimation process. This is the first evidence where nitrifying culture acclimated to 4-mp completely removed ammonium and 2-CP.
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Affiliation(s)
- J E Pérez-Alfaro
- Departamento de Biotecnología, Universidad Autónoma Metropolitana-Iztapalapa, México, D.F
| | - G González-Blanco
- Departamento de Biotecnología, Universidad Autónoma Metropolitana-Iztapalapa, México, D.F
| | - E Sierra-Palacios
- Academia de Biología, Colegio de Ciencias y Humanidades, Universidad Autónoma de la Ciudad de México, México
| | - J Marcial-Quino
- Cátedras CONACyT, Instituto Nacional de Pediatría, Lab. Bioquímica Genética, Secretaría de Salud, México
| | - R Beristain-Cardoso
- Departamento de Recursos de la Tierra, Universidad Autónoma Metropolitana-Lerma, Edo, México E-mail:
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Aeppli C, Tysklind M, Holmstrand H, Gustafsson Ö. Use of Cl and C isotopic fractionation to identify degradation and sources of polychlorinated phenols: mechanistic study and field application. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:790-797. [PMID: 23210465 DOI: 10.1021/es303343u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The widespread use of chlorinated phenols (CPs) as a wood preservative has led to numerous contaminated sawmill sites. However, it remains challenging to assess the extent of in situ degradation of CPs. We evaluated the use of compound-specific chlorine and carbon isotope analysis (Cl- and C-CSIA) to assess CP biotransformation. In a laboratory system, we measured isotopic fractionation during oxidative 2,4,6-trichlorophenol dechlorination by representative soil enzymes (C. fumago chloroperoxidase, horseradish peroxidase, and laccase from T. versicolor). Using a mathematical model, the validity of the Rayleigh approach to evaluate apparent kinetic isotope effects (AKIE) was confirmed. A small but significant Cl-AKIE of 1.0022 ± 0.0006 was observed for all three enzymes, consistent with a reaction pathway via a cationic radical species. For carbon, a slight inverse isotope effect was observed (C-AKIE = 0.9945 ± 0.0019). This fractionation behavior is clearly distinguishable from reported reductive dechlorination mechanisms. Based on these results we then assessed degradation and apportioned different types of technical CP mixtures used at two former sawmill sites. To our knowledge, this is the first study that makes use of two-element CSIA to study sources and transformation of CPs in the environment.
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Affiliation(s)
- Christoph Aeppli
- Department of Applied Environmental Science (ITM), Stockholm University, SE-106 91 Stockholm, Sweden.
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12
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Carvalho M, Martins I, Medeiros J, Tavares S, Planchon S, Renaut J, Núñez O, Gallart-Ayala H, Galceran M, Hursthouse A, Silva Pereira C. The response of Mucor plumbeus to pentachlorophenol: A toxicoproteomics study. J Proteomics 2013. [DOI: 10.1016/j.jprot.2012.11.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Ning D, Wang H. Involvement of cytochrome P450 in pentachlorophenol transformation in a white rot fungus Phanerochaete chrysosporium. PLoS One 2012; 7:e45887. [PMID: 23029295 PMCID: PMC3447798 DOI: 10.1371/journal.pone.0045887] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 08/27/2012] [Indexed: 12/22/2022] Open
Abstract
The occurrence of cytochrome P450 and P450-mediated pentachlorophenol oxidation in a white rot fungus Phanerochaete chrysosporium was demonstrated in this study. The carbon monoxide difference spectra indicated induction of P450 (103±13 pmol P450 per mg protein in the microsomal fraction) by pentachlorophenol. The pentachlorophenol oxidation by the microsomal P450 was NADPH-dependent at a rate of 19.0±1.2 pmol min−1 (mg protein)−1, which led to formation of tetrachlorohydroquinone and was significantly inhibited by piperonyl butoxide (a P450 inhibitor). Tetrachlorohydroquinone was also found in the cultures, while the extracellular ligninases which were reported to be involved in tetrachlorohydroquinone formation were undetectable. The formation of tetrachlorohydroquinone was not detectable in the cultures added with either piperonyl butoxide or cycloheximide (an inhibitor of de novo protein synthesis). These results revealed the pentachlorophenol oxidation by induced P450 in the fungus, and it should be the first time that P450-mediated pentachlorophenol oxidation was demonstrated in a microorganism. Furthermore, the addition of the P450 inhibitor to the cultures led to obvious increase of pentachlorophenol, suggesting that the relationship between P450 and pentachlorophenol methylation is worthy of further research.
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Affiliation(s)
- Daliang Ning
- State Key Joint Laboratory on Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, People's Republic of China
| | - Hui Wang
- State Key Joint Laboratory on Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, People's Republic of China
- * E-mail:
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Carvalho MB, Tavares S, Medeiros J, Núñez O, Gallart-Ayala H, Leitão MC, Galceran MT, Hursthouse A, Pereira CS. Degradation pathway of pentachlorophenol by Mucor plumbeus involves phase II conjugation and oxidation-reduction reactions. JOURNAL OF HAZARDOUS MATERIALS 2011; 198:133-42. [PMID: 22074894 DOI: 10.1016/j.jhazmat.2011.10.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 10/04/2011] [Accepted: 10/05/2011] [Indexed: 05/07/2023]
Abstract
Environmental pollution by pentachlorophenol (PCP) is a critical concern worldwide and fungal bioremediation constitutes an elegant and environment-friendly solution. Mucorales from the Zygomycota phylum are often observed to be competitive in field conditions and Mucor plumbeus, in particular, can efficiently deplete PCP from media. The pathway for PCP degradation used by this fungus has not been investigated. In this study, PCP-derived metabolites were identified by liquid chromatography coupled with quadrupole time-of-flight mass spectrometry, including tetra- and tri-chlorohydroquinones and phase II-conjugated metabolites. Amongst the latter are the previously reported glucose, sulfate and ribose conjugates, and identified for the first time in fungi sulfate-glucose conjugates. A PCP transformation pathway for M. plumbeus is proposed, which excludes the involvement of cytochrome P-450 and extracellular ligninolytic enzymes.
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Affiliation(s)
- Mariana B Carvalho
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal
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Ghosh S, Cremers CM, Jakob U, Love NG. Chlorinated phenols control the expression of the multidrug resistance efflux pump MexAB-OprM in Pseudomonas aeruginosa by interacting with NalC. Mol Microbiol 2011; 79:1547-56. [PMID: 21231970 DOI: 10.1111/j.1365-2958.2011.07544.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
NalC is a TetR type regulator that represses the multidrug efflux pump MexAB-OprM in Pseudomonas aeruginosa. Here we explain the mechanism of NalC-mediated regulation of MexAB-OprM. We show that NalC non-covalently binds chlorinated phenols and chemicals containing chlorophenol side-chains such as triclosan. NalC-chlorinated phenol binding results in its dissociation from promoter DNA and upregulation of NalC's downstream targets, including the MexR antirepressor ArmR. ArmR upregulation and MexR-ArmR complex formation have previously been shown to upregulate MexAB-OprM. In vivo mexB and armR expression analyses were used to corroborate in vitro NalC-chlorinated phenol binding. We also show that the interaction between chlorinated phenols and NalC is reversible, such that removal of these chemicals restored NalC promoter DNA binding. Thus, the NalC-chlorinated phenol interaction is likely a pertinent physiological mechanism that P. aeruginosa uses to control expression of the MexAB-OprM efflux pump.
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Affiliation(s)
- Sudeshna Ghosh
- Department of Civil and Environmental Engineering, University of Michigan, 2350 Hayward Street, 2340 GG Brown, Ann Arbor, MI 48109-2125, USA
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16
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The analysis of natural cork stoppers in transversal sections as an effective tool to determine the origin of the taint by 2,4,6-trichloroanisole. Eur Food Res Technol 2009. [DOI: 10.1007/s00217-009-1153-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Carvalho MB, Martins I, Leitão MC, Garcia H, Rodrigues C, San Romão V, McLellan I, Hursthouse A, Silva Pereira C. Screening pentachlorophenol degradation ability by environmental fungal strains belonging to the phyla Ascomycota and Zygomycota. J Ind Microbiol Biotechnol 2009; 36:1249-56. [PMID: 19543759 DOI: 10.1007/s10295-009-0603-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Accepted: 05/27/2009] [Indexed: 11/28/2022]
Affiliation(s)
- Mariana B Carvalho
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Apartado 127, 2781-901 Oeiras, Portugal
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18
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Hursthouse A, Kowalczyk G. Transport and dynamics of toxic pollutants in the natural environment and their effect on human health: research gaps and challenge. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2009; 31:165-187. [PMID: 19002593 DOI: 10.1007/s10653-008-9213-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Revised: 08/19/2008] [Accepted: 08/22/2008] [Indexed: 05/27/2023]
Abstract
The source-pathway-receptor (SPR) approach to human exposure and risk assessment contains considerable uncertainty when using the refined modelling approaches to pollutant transport and dispersal, not least in how compounds of concern might be prioritized, proxy or indicator substances identified and the basic environmental and toxicological data collected. The impact of external environmental variables, urban systems and lifestyle is still poorly understood. This determines exposure of individuals and there are a number of methods being developed to provide more reliable spatial assessments. Within the human body, the dynamics of pollutants and effects on target organs from diffuse, transient sources of exposure sets ambitious challenges for traditional risk assessment approaches. Considerable potential exists in the application of, e.g. physiologically based pharmacokinetic (PBPK) models. The reduction in uncertainties associated with the effects of contaminants on humans, transport and dynamics influencing exposure, implications of adult versus child exposure and lifestyle and the development of realistic toxicological and exposure data are all highlighted as urgent research needs. The potential to integrate environmental with toxicological models provides the next phase of research opportunity and should be used to drive empirical and model assessments.
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Affiliation(s)
- Andrew Hursthouse
- School of Engineering & Science, University of the West of Scotland, Paisley Campus, Paisley PA12BE, UK.
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Campoy S, Álvarez-Rodríguez ML, Recio E, Rumbero A, Coque JJR. Biodegradation of 2,4,6-TCA by the white-rot fungusPhlebia radiatais initiated by a phase I (O-demethylation)-phase II (O-conjugation) reactions system: implications for the chlorine cycle. Environ Microbiol 2009; 11:99-110. [DOI: 10.1111/j.1462-2920.2008.01744.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wu Y, Hu B, Hou Y. Headspace single drop and hollow fiber liquid phase microextractions for HPLC determination of phenols. J Sep Sci 2008; 31:3772-81. [DOI: 10.1002/jssc.200800365] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Giunchi A, Versari A, Parpinello GP, Galassi S. Analysis of mechanical properties of cork stoppers and synthetic closures used for wine bottling. J FOOD ENG 2008. [DOI: 10.1016/j.jfoodeng.2008.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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