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Hou X, Ou Y, Wang X, Liu H, Cheng L, Yan L. The influence of vermicompost on atrazine microbial degradation performance and pathway in black soil, Northeast China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175415. [PMID: 39128514 DOI: 10.1016/j.scitotenv.2024.175415] [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: 05/31/2024] [Revised: 07/28/2024] [Accepted: 08/07/2024] [Indexed: 08/13/2024]
Abstract
The atrazine (ATR) is extensively used in dryland crops like corn and sorghum in black soil region of Northeast China, posing ecological risks due to toxic metabolites. Vermicompost are known for soil organic pollution remediation but their role in pesticide degradation in black soil remains understudied. The influence of vermicompost on the microbial degradation pathway of atrazine was assessed in this study. Although vermicompost didn't significantly boost atrazine removal, they notably aided in primary metabolite degradation, hydroxyatrazine (HYA), deisopropylatrazine (DIA), and deethylatrazine (DEA), reducing their content by 38.67 %. They also altered the soil microbial community structure, favoring atrazine-degrading bacteria like Proteobacteria, Firmicutes, and Actinobacteria. Five secondary degradation products were identified in vermicompost treatments. Atrazine degradation occurred via dechlorination, dealkylation, and deamination pathways mainly by Nocardioidacea, Streptomycetaceae, Bacillaceae, Sphingomonadaceae, Comamonadaceae and Nitrososphaeraceae. pH and available nitrogen (AN) influenced microbial community structure and atrazine degradation, correlating with vermicompost application rates. Future black soil remediation should optimize application rates based on atrazine content and soil properties.
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Affiliation(s)
- Xia Hou
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yang Ou
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; Jilin Provincial Engineering Center of CWs Design in Cold Region & Beautiful Country Construction, Changchun 130102, China.
| | - Xinhong Wang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China
| | - Huiping Liu
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Lei Cheng
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Liming Yan
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; College of Plant Protection, Jilin Agricultural University, Changchun 130118, China
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Yu H, Cui H, Chen J, Li X. The herbicidal activity of pre-emergence herbicide cinmethylin and its potential risks on soil ecology: pH, enzyme activities and bacterial community. ENVIRONMENTAL MICROBIOME 2024; 19:66. [PMID: 39245721 PMCID: PMC11382390 DOI: 10.1186/s40793-024-00608-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 08/26/2024] [Indexed: 09/10/2024]
Abstract
BACKGROUND The herbicide cinmethylin, which was originally registered for use in rice fields, has the potential to control grass weeds in wheat fields before the emergence of wheat. However, its herbicidal activity against various troublesome grass weeds that infest wheat fields in China and its relationships with soil pH, soil enzymes and soil bacteria are not well known. Here, the effects of applying cinmethylin on the soil surface were tested on six grass weeds, and its impacts on soil characteristics, including the soil pH, soil enzymes and bacterial community, were evaluated. RESULTS Alopecurus aequalis, A. japonicus and A. myosuroides were highly sensitive to cinmethylin, with GR50 values of 78.77, 61.49 and 119.67 g a.i. ha- 1, respectively. The half-lives of cinmethylin at 1-, 10- and 100-fold the recommended rates were estimated at 26.46 - 52.33 d. Cinmethylin significantly increased the soil pH but decreased the activities of soil sucrase and urease. At 10- and 100-fold the recommended rate of cinmethylin, the bacterial abundance and diversity significantly decreased at 30 and 60 days after cinmethylin treatment. Cinmethylin at 100-fold the recommended rates largely promoted bacterial co-occurrence network complexity. Cinmethylin at high concentrations temporarily inhibited the abundance of the Nitrospira genus, as indicated by the copy numbers of the ammonia-oxidising archaea (AOA) amoA and ammonia-oxidising bacteria (AOB) amoA genes. Further analysis revealed that soil pH was negatively related to soil urease, and a significantly positive correlation was detected between soil urease and soil nitrification. CONCLUSION Collectively, the application of cinmethylin at the recommended field dose had nearly no effect on the soil ecosystem, but its potential risks at high concentrations deserve further attention.
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Affiliation(s)
- Haiyan Yu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Hailan Cui
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jingchao Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiangju Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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3
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Liu C, Xu Q, Liu Y, Song M, Cao X, Du X, Yan H. Metabolomic Analysis of Carotenoids Biosynthesis by Sphingopyxis sp. USTB-05. Molecules 2024; 29:4235. [PMID: 39275082 PMCID: PMC11397044 DOI: 10.3390/molecules29174235] [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: 08/11/2024] [Revised: 08/30/2024] [Accepted: 09/04/2024] [Indexed: 09/16/2024] Open
Abstract
Carotenoids belonging to the class of tetraterpenoids have extensive applications in medicine, food, nutrition, cosmetics, and feed. Among them, lutein and zeaxanthin can prevent macular degeneration in the elderly, which is very important for protecting vision. Here, we introduce the first metabolomic analysis of Sphingopyxis sp. USTB-05, aiming to shed light on the biosynthesis of carotenoids. Sphingopyxis sp. USTB-05 has the complete methylerythritol 4-phosphate (MEP) pathway and carotenoid biosynthesis pathway, especially involved in the bioconversion of zeaxanthin, violaxanthin, and astaxanthin. Metabolomic profiling identified seven carotenes and six xanthophylls synthesized by Sphingopyxis sp. USTB-05. Zeaxanthin, in particular, was found to be the most abundant, with a content of 37.1 µg/g dry cells. Collectively, the results presented herein greatly enhance our understanding of Sphingopyxis sp. USTB-05 in carotenoids biosynthesis, and thus further accelerate its fundamental molecular investigations and biotechnological applications.
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Affiliation(s)
- Chao Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Qianqian Xu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yang Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Meijie Song
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiaoyu Cao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinyue Du
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Hai Yan
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Ye Y, Peng C, Zhu D, Yang R, Deng L, Wang T, Tang Y, Lu L. Identification of sulfamethazine degraders in swine farm-impacted river and farmland: A comparative study of aerobic and anaerobic environments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169299. [PMID: 38104834 DOI: 10.1016/j.scitotenv.2023.169299] [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: 09/16/2023] [Revised: 11/20/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
Sulfonamides (SAs) are extensively used antibiotics in the prevention and treatment of animal diseases, leading to significant SAs pollution in surrounding environments. Microbial degradation has been proposed as a crucial mechanism for removing SAs, but the taxonomic identification of microbial functional guilds responsible for SAs degradation in nature remain largely unexplored. Here, we employed 13C-sulfamethazine (SMZ)-based DNA-stable isotope probing (SIP) and metagenomic sequencing to investigate SMZ degraders in three distinct swine farm wastewater-receiving environments within an agricultural ecosystem. These environments include the aerobic riparian wetland soil, agricultural soil, and anaerobic river sediment. SMZ mineralization activities exhibited significant variation, with the highest rate observed in aerobic riparian wetland soil. SMZ had a substantial impact on the microbial community compositions across all samples. DNA-SIP analysis demonstrated that Thiobacillus, Auicella, Sphingomonas, and Rhodobacter were dominant active SMZ degraders in the wetland soil, whereas Ellin6067, Ilumatobacter, Dongia, and Steroidobacter predominated in the agricultural soil. The genus MND1 and family Vicinamibacteraceae were identified as SMZ degrader in both soils. In contrast, anaerobic SMZ degradation in the river sediment was mainly performed by genera Microvirga, Flavobacterium, Dechlorobacter, Atopostipes, and families Nocardioidaceae, Micrococcaceae, Anaerolineaceae. Metagenomic analysis of 13C-DNA identified key SAs degradation genes (sadA and sadC), and various of dioxygenases, and aromatic hydrocarbon degradation-related functional genes, indicating their involvement in degradation of SMZ and its intermediate products. These findings highlight the variations of indigenous SAs oxidizers in complex natural habitats and emphasize the consideration of applying these naturally active degraders in future antibiotic bioremediation.
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Affiliation(s)
- Yuqiu Ye
- College of Life Sciences, China West Normal University, Nanchong 637002, China
| | - Chao Peng
- College of Life Sciences, China West Normal University, Nanchong 637002, China; Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, China
| | - Dong Zhu
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Ruiyu Yang
- College of Life Sciences, China West Normal University, Nanchong 637002, China
| | - Linjie Deng
- College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China
| | - Tao Wang
- College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China
| | - Yun Tang
- College of Life Sciences, China West Normal University, Nanchong 637002, China
| | - Lu Lu
- College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China; Key Laboratory of Nanchong City of Ecological Environment Protection and Pollution Prevention in Jialing River Basin, China West Normal University, Nanchong 637009, China.
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Suman J, Sredlova K, Fraraccio S, Jerabkova M, Strejcek M, Kabickova H, Cajthaml T, Uhlik O. Transformation of hydroxylated polychlorinated biphenyls by bacterial 2-hydroxybiphenyl 3-monooxygenase. CHEMOSPHERE 2024; 349:140909. [PMID: 38070605 DOI: 10.1016/j.chemosphere.2023.140909] [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: 06/06/2023] [Revised: 08/18/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
Monohydroxylated PCBs (OH-PCBs) are an (eco)toxicologically significant group of compounds, as they arise from the oxidation of polychlorinated biphenyls (PCBs) and, at the same time, may exert even more severe toxic effects than their parent PCB molecules. Despite having been widely detected in environmental samples, plants, and animals, information on the fate of OH-PCBs in the environment is scarce, including on the enzymatic machinery behind their degradation. To date, only a few bacterial taxa capable of OH-PCB transformation have been reported. In this study, we aimed to obtain a deeper insight into the transformation of OH-PCBs in soil bacteria and isolated a Pseudomonas sp. strain P1B16 based on its ability to use o-phenylphenol (2-PP) which, when exposed to the Delor 103-derived OH-PCB mixture, depleted a wide spectrum of mono-, di, and trichlorinated OH-PCBs. In the P1B16 genome, a region designated as hbp was identified, which bears a set of putative genes involved in the transformation of OH-PCBs, namely hbpA encoding for a putative flavin-dependent 2-hydroxybiphenyl monooxygenase, hbpC (2,3-dihydroxybiphenyl-1,2-dioxygenase), hbpD (2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate hydrolase), and the transcriptional activator-encoding gene hbpR. The hbpA coding sequence was heterologously expressed, purified, and its substrate specificity was investigated towards the Delor 103-derived OH-PCB mixture, individual OH-PCBs, and multiple (chlorinated) phenolics. Apart from 2-PP and 2-chlorophenol, HbpA was also demonstrated to transform a range of OH-PCBs, including a 3-hydroxy-2,2',4',5,5'-pentachlorobiphenyl. Importantly, this is the first direct evidence of HbpA homologs being involved in the degradation of OH-PCBs. Moreover, using a P1B16-based biosensor strain, the specific induction of hbp genes by 2-PP, 3-phenylphenol, 4-phenylphenol, and the OH-PCB mixture was demonstrated. This study provides direct evidence on the specific enzymatic machinery responsible for the transformation of OH-PCBs in bacteria, with many implications in ecotoxicology, environmental restoration, and microbial ecology in habitats burdened with PCB contamination.
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Affiliation(s)
- Jachym Suman
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Technicka 3, 162 08, Prague, Czech Republic.
| | - Kamila Sredlova
- Institute for Environmental Studies, Faculty of Science, Charles University, Benatska 2, 128 01, Prague 2, Czech Republic; Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic
| | - Serena Fraraccio
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Technicka 3, 162 08, Prague, Czech Republic
| | - Martina Jerabkova
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Technicka 3, 162 08, Prague, Czech Republic
| | - Michal Strejcek
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Technicka 3, 162 08, Prague, Czech Republic
| | - Hana Kabickova
- Military Health Institute, Ministry of Defence of the Czech Republic, U Vojenske Nemocnice 1200, 169 02, Prague, Czech Republic
| | - Tomas Cajthaml
- Institute for Environmental Studies, Faculty of Science, Charles University, Benatska 2, 128 01, Prague 2, Czech Republic; Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic
| | - Ondrej Uhlik
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Technicka 3, 162 08, Prague, Czech Republic.
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6
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Lagos S, Koutroutsiou K, Karpouzas DG. Isolation of soil bacteria able to degrade the anthelminthic compound albendazole. PeerJ 2023; 11:e16127. [PMID: 37953781 PMCID: PMC10634332 DOI: 10.7717/peerj.16127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/27/2023] [Indexed: 11/14/2023] Open
Abstract
Anthelmintic (AHs) veterinary drugs constitute major environmental contaminants. The use of AH-contaminated fecal material as manures in agricultural settings constitutes their main route of environmental dispersal. Once in soils, these compounds induce toxic effects to soil fauna and soil microbiota, both having a pivotal role in soil ecosystem functioning. Therefore, it is necessary to identify mitigation strategies to restrict the environmental dispersal of AHs. Bioaugmentation of AH-contaminated manures or soils with specialized microbial inocula constitutes a promising remediation strategy. In the present study, we aimed to isolate microorganisms able to actively transform the most widely used benzimidazole anthelminthic albendazole (ABZ). Enrichment cultures in minimal growth media inoculated with a soil known to exhibit rapid degradation of ABZ led to the isolation of two bacterial cultures able to actively degrade ABZ. Two oxidative products of ABZ, ABZSO and ABZSO2, were detected at low amounts along its degradation. This suggested that the oxidation of ABZ is not a major transformation process in the isolated bacteria which most probably use other biotic pathways to degrade ABZ leading to the formation of products not monitored in this study. Full length sequencing of their 16S rRNA gene and phylogenetic analysis assigned both strains to the genus Acinetobacter. The sequences were submitted in GeneBank NCBI, database with the accession numbers OP604271 to OP604273. Further studies will employ omic tools to identify the full transformation pathway and the associated genetic network of Acinetobacter isolates, information that will unlock the potential use of these isolates in the bioaugmentation of contaminated manures.
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Affiliation(s)
- Stathis Lagos
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Larissa, Viopolis, Thessaly, Greece
| | - Kalliopi Koutroutsiou
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Larissa, Viopolis, Thessaly, Greece
| | - Dimitrios G. Karpouzas
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Larissa, Viopolis, Thessaly, Greece
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Liu H, Wang Y, Shi X. Co-existing antibiotics alter the enantioselective dissipation characteristics of zoxamide and drive combined impact on soil microenvironment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118340. [PMID: 37336018 DOI: 10.1016/j.jenvman.2023.118340] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/24/2023] [Accepted: 06/04/2023] [Indexed: 06/21/2023]
Abstract
Co-existence of antibiotics (ABX) in soil may expand the environmental harm of pesticide pollution. Our study investigated the combined effects of five antibiotics chlortetracycline (CTC), oxytetracycline (OTC), tetracycline (TC), sulfamethoxazole (SMX), enrofloxacin (ENR) on enantioselective fate of zoxamide (ZXM) and soil health. The results showed that S-(+)-ZXM preferentially dissipated in soil. ABX prolonged dissipation half-life and reduced enantioselectivity of ZXM. Soil was detected to be more acidic after long-term treatment of ZXM and ABX. Lowest soil available N, P, K were found in ZXM + SMX, ZXM + OTC and ZXM + SMX groups at 80 days, respectively. ABX had demonstrated effective promotion of catalase (S-CAT), urease (S-UE) and negative impact on dehydrogenase (S-DHA), sucrase (S-SC) activities. Bacteria Lysobacter, Sphingomonas and fungus Mortierella were identified as the most dominant genera, which possessed as potential microbial resources for removal of composite pollution from ZXM and ABX. SMX and TC, SMX, ENR, respectively, contributed to the alteration of bacteria and fungi community abundance. Soil acidity, available N and enzyme activity showed stronger correlations with bacteria and fungi compared to other environmental factors. Our findings highlighted the interactions between ZXM and ABX from the perspective of soil microenvironment changes. Moreover, a theoretical basis for the mechanism was actively provided.
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Affiliation(s)
- Hui Liu
- College of Plant Protection, Northeast Agricultural University, Harbin, 150030, China.
| | - Yue Wang
- College of Plant Protection, Northeast Agricultural University, Harbin, 150030, China
| | - Xinyu Shi
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China
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Papazlatani CV, Kolovou M, Gkounou EE, Azis K, Mavriou Z, Testembasis S, Karaoglanidis GS, Ntougias S, Karpouzas DG. Isolation, characterization and industrial application of a Cladosporium herbarum fungal strain able to degrade the fungicide imazalil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 301:119030. [PMID: 35189300 DOI: 10.1016/j.envpol.2022.119030] [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: 10/16/2021] [Revised: 02/11/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Imazalil (IMZ) is an imidazole fungicide commonly used by fruit-packaging plants (FPPs) to control fungal infections during storage. Its application leads to the production of pesticide-contaminated wastewaters, which, according to the European Commission, need to be treated on site. Considering the lack of efficient treatment methods, biodepuration systems inoculated with tailored-made inocula specialized on the removal of such persistent fungicides appear as an appropriate solution. However, nothing is known about the biodegradation of IMZ. We aimed to isolate and characterize microorganisms able to degrade the recalcitrant fungicide IMZ and eventually to test their removal efficiency under near practical bioengineering conditions. Enrichment cultures from a soil receiving regular discharges of effluents from a FPP, led to the isolation of a Cladosporium herbarum strain, which showed no pathogenicity on fruits, a trait essential for its biotechnological exploitation in FPPs. The fungus was able to degrade up to 100 mg L-1 of IMZ. However, its degrading capacity and growth was reduced at increasing IMZ concentrations in a dose-dependent manner, suggesting the involvement of a detoxification rather than an energy-gain mechanism in the dissipation of IMZ. The isolate could tolerate and gradually degrade the fungicides fludioxonil (FLD) and thiabendazole (TBZ), also used in FPPs and expected to coincide alongside IMZ in FPP effluents. The capacity of the isolate to remove IMZ in a practical context was evaluated in a benchtop immobilized-cell bioreactor fed with artificial IMZ-contaminated wastewater (200 mg L-1). The fungal strain established in the reactor, completely dominated the fungal community and effectively removed >96% of IMZ. The bioreactor also supported a diverse bacterial community composed of Sphingomonadales, Burkholderiales and Pseudomonadales. Our study reports the isolation of the first IMZ-degrading microorganism with high efficiency to remove IMZ from agro-industrial effluents under bioengineering conditions.
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Affiliation(s)
- Christina V Papazlatani
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Maria Kolovou
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Elisabeth E Gkounou
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Konstantinos Azis
- Democritus University of Thrace, Department of Environmental Engineering, Laboratory of Wastewater Management and Treatment Technologies, Vas. Sofias 12, 67132, Xanthi, Greece
| | - Zografina Mavriou
- Democritus University of Thrace, Department of Environmental Engineering, Laboratory of Wastewater Management and Treatment Technologies, Vas. Sofias 12, 67132, Xanthi, Greece
| | - Stefanos Testembasis
- Aristotle University of Thessaloniki, Department of Agriculture, Plant Pathology Laboratory, University Campus, 54124, Thessaloniki, Greece
| | - George S Karaoglanidis
- Aristotle University of Thessaloniki, Department of Agriculture, Plant Pathology Laboratory, University Campus, 54124, Thessaloniki, Greece
| | - Spyridon Ntougias
- Democritus University of Thrace, Department of Environmental Engineering, Laboratory of Wastewater Management and Treatment Technologies, Vas. Sofias 12, 67132, Xanthi, Greece
| | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece.
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Liu F, Bai J, Huang W, Li F, Ke W, Zhang Y, Xie D, Zhang B, Guo X. Characterization of a novel beta-cypermethrin-degrading strain of Lactobacillus pentosus 3-27 and its effects on bioremediation and the bacterial community of contaminated alfalfa silage. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127101. [PMID: 34488094 DOI: 10.1016/j.jhazmat.2021.127101] [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: 06/17/2021] [Revised: 08/28/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
In this study, a novel beta-cypermethrin (beta-cyp)-degrading strain Lactobacillus pentosus 3-27 (LP3-27) was screened from beta-cyp-contaminated silage. The strain could degrade 96% of beta-cyp (50 mg/L) in MSM medium after 4 d of culture, while the strain lost its degradation ability when the beta-cyp concentration reached 250 mg/L. The effects of LP 3-27 on fermentation, bacterial community, and bioremediation of contaminated alfalfa silage at two dry matter (DM) contents were studied. The results showed that inoculation with LP3-27 not only degraded beta-cyp, but also improved the fermentation quality of alfalfa silage after 60 d of ensiling. Meanwhile, L. pentosus dominated the bacterial community during ensiling in LP3-27 inoculated silages, whereas Pediococcus acidilactici was the dominant species in the control silage. LP3-27 inoculation also simplified the bacterial interaction networks of ensiled alfalfa. Beta-cyp degradation was positively correlated with L. pentosus in LP- inoculated silages, which confirmed the function of beta-cyp degradation by L. pentosus. In addition, higher beta-cyp degradation was observed in silage with 35% versus 43% DM. In summary, strain LP3-27 could be used as a candidate inoculum for bioremediation of beta-cyp-contaminated silage and to produce safe silage for animal production.
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Affiliation(s)
- Fang Liu
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Jie Bai
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Wenkang Huang
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Fuhou Li
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Wencan Ke
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Yixin Zhang
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Dongmei Xie
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China
| | - Bo Zhang
- Animal Husbandry and Veterinary Bureau of Dingxi City, Dingxi 743000, China
| | - Xusheng Guo
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, China.
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Luo Y, Zhou M, Zhao Q, Wang F, Gao J, Sheng H, An L. Complete genome sequence of Sphingomonas sp. Cra20, a drought resistant and plant growth promoting rhizobacteria. Genomics 2020; 112:3648-3657. [PMID: 32334112 DOI: 10.1016/j.ygeno.2020.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 03/19/2020] [Accepted: 04/17/2020] [Indexed: 01/02/2023]
Abstract
Sphingomonas sp. Cra20 is a rhizobacteria isolated from the root surface of Leontopodium leontopodioides in the Tianshan Mountains of China and was found to influence root system architecture. We analyzed its ability for plant-growth promotion and the molecular mechanism involved by combining the physiological and genome information. The results indicated that the bacterium enhanced the drought resistance of Arabidopsis thaliana and promoted growth mainly through the strain-released volatile organic compounds. The genome consisted of one circular chromosome and one circular plasmid, containing a series of genes related to the plant-growth promotion. Furthermore, multiple copies of cold-associated genes, general stress response genes, oxidative stress genes and DNA repair mechanisms supported its survivability in extreme environments. In addition, the strain had the ability to degrade xylene and 2, 4-D via a variety of monooxygenases and dioxygenases. This provides further information and will promote the application of Cra20 as a biofertilizer in agriculture.
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Affiliation(s)
- Yang Luo
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Meng Zhou
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Qi Zhao
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Fang Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jiangli Gao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hongmei Sheng
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Lizhe An
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China; The College of Forestry, Beijing Forestry University, Beijing 100083, China.
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Perruchon C, Vasileiadis S, Papadopoulou ES, Karpouzas DG. Genome-Based Metabolic Reconstruction Unravels the Key Role of B12 in Methionine Auxotrophy of an Ortho-Phenylphenol-Degrading Sphingomonas haloaromaticamans. Front Microbiol 2020; 10:3009. [PMID: 31998277 PMCID: PMC6970198 DOI: 10.3389/fmicb.2019.03009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 12/16/2019] [Indexed: 12/30/2022] Open
Abstract
Auxotrophy to amino acids and vitamins is a common feature in the bacterial world shaping microbial communities through cross-feeding relations. The amino acid auxotrophy of pollutant-degrading bacteria could hamper their bioremediation potential, however, the underlying mechanisms of auxotrophy remain unexplored. We employed genome sequence-based metabolic reconstruction to identify potential mechanisms driving the amino acid auxotrophy of a Sphingomonas haloaromaticamans strain degrading the fungicide ortho-phenylphenol (OPP) and provided further verification for the identified mechanisms via in vitro bacterial assays. The analysis identified potential gaps in the biosynthesis of isoleucine, phenylalanine and tyrosine, while methionine biosynthesis was potentially effective, relying though in the presence of B12. Supplementation of the bacterium with the four amino acids in all possible combinations rescued its degrading capacity only with methionine. Genome sequence-based metabolic reconstruction and analysis suggested that the bacterium was incapable of de novo biosynthesis of B12 (missing genes for the construction of the corrin ring) but carried a complete salvage pathway for corrinoids uptake from the environment, transmembrane transportation and biosynthesis of B12. In line with this the bacterium maintained its degrading capacity and growth when supplied with environmentally relevant B12 concentrations (i.e., 0.1 ng ml–1). Using genome-based metabolic reconstruction and in vitro testing we unraveled the mechanism driving the auxotrophy of a pesticide-degrading S. haloaromaticamans. Further studies will investigate the corrinoids preferences of S. haloaromaticamans for optimum growth and OPP degradation.
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Affiliation(s)
- Chiara Perruchon
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Sotirios Vasileiadis
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Evangelia S Papadopoulou
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Dimitrios G Karpouzas
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
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12
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Lagos S, Perruchon C, Katsoula A, Karpouzas DG. Isolation and characterization of soil bacteria able to rapidly degrade the organophosphorus nematicide fosthiazate. Lett Appl Microbiol 2019; 68:149-155. [PMID: 30444532 DOI: 10.1111/lam.13098] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/21/2018] [Accepted: 11/05/2018] [Indexed: 12/01/2022]
Abstract
Foshtiazate is an organophosphorus nematicide commonly used in protected crops and potato plantations. It is toxic to mammals, birds and honeybees, it is persistent in certain soils and can be transported to water resources. Recent studies by our group demonstrated, for the first time, the development of enhanced biodegradation of fosthiazate in agricultural soils. However, the micro-organisms driving this process are still unknown. We aimed to isolate soil bacteria responsible for the enhanced biodegradation of fosthiazate and assess their degradation potential against high concentrations of the nematicide. Enrichment cultures led to the isolation of two bacterial cultures actively degrading fosthiazate. Denaturating Gradient Gel Electrophoresis analysis revealed that they were composed of a single phylotype, identified via 16S rRNA cloning and phylogenetic analysis as Variovorax boronicumulans. This strain showed high degradation potential against fosthiazate. It degraded up to 100 mg l-1 in liquid cultures (DT50 = 11·2 days), whereas its degrading capacity was reduced at higher concentration levels (500 mg l-1 , DT50 = 20 days). This is the first report for the isolation of a fosthiazate-degrading bacterium, which showed high potential for use in future biodepuration and bioremediation applications. SIGNIFICANCE AND IMPACT OF THE STUDY: This study reported for the first time the isolation and molecular identification of bacteria able to rapidly degrade the organophosphorus nematicide fosthiazate; one of the few synthetic nematicides still available on the global market. Further tests demonstrated the high capacity of the isolated strain to degrade high concentrations of fosthiazate suggesting its high potential for future bioremediation applications in contaminated environmental sites, considering high acute toxicity and high persistence and mobility of fosthiazate in acidic and low in organic matter content soils.
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Affiliation(s)
- S Lagos
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Larissa, Greece
| | - C Perruchon
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Larissa, Greece
| | - A Katsoula
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Larissa, Greece
| | - D G Karpouzas
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Larissa, Greece
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13
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Papadopoulou ES, Genitsaris S, Omirou M, Perruchon C, Stamatopoulou A, Ioannides I, Karpouzas DG. Bioaugmentation of thiabendazole-contaminated soils from a wastewater disposal site: Factors driving the efficacy of this strategy and the diversity of the indigenous soil bacterial community. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 233:16-25. [PMID: 29049942 DOI: 10.1016/j.envpol.2017.10.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/03/2017] [Accepted: 10/05/2017] [Indexed: 06/07/2023]
Abstract
The application of the fungicide thiabendazole (TBZ) in fruit packaging plants (FPP) results in the production of effluents which are often disposed in adjacent field sites. These require remediation to prevent further environmental dispersal of TBZ. We assessed the bioaugmentation potential of a newly isolated TBZ-degrading bacterial consortium in a naturally contaminated soil (NCS) exhibiting a natural gradient of TBZ levels (12000, 400, 250 and 12 mg kg-1). The effect of aging on bioaugmentation efficacy was comparatively tested in a soil with similar physicochemical properties and soil microbiota, which was artificially, contaminated with the same TBZ levels (ACS). The impact of bioaugmentation and TBZ on the bacterial diversity in the NCS was explored via amplicon sequencing. Bioaugmentation effectively removed TBZ from both soils at levels up to 400 mg kg-1 but failed at the highest contamination level (12000 mg kg-1). Dissipation of TBZ in bioaugmented samples showed a concentration-dependent pattern, while aging of TBZ had a slight effect on bioaugmentation efficiency. Bioaugmentation had no impact on the soil bacterial diversity, in contrast to TBZ contamination. Soils from the hotspots of TBZ contamination (12000 mg kg-1) showed a drastically lower α-diversity driven by the dominance of β- and γ-proteobacteria at the expense of all other bacterial phyla, especially Actinobacteria. Overall, bioaugmentation with specialized microbial inocula could be an effective solution for the recovery of disposal sites contaminated with persistent chemicals like TBZ.
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Affiliation(s)
- Evangelia S Papadopoulou
- University of Thessaly, Department of Biochemistry and Biotechnology, Lab of Plant and Environmental Biotechnology, 41500 Larissa, Greece
| | - Savvas Genitsaris
- University of Thessaly, Department of Biochemistry and Biotechnology, Lab of Plant and Environmental Biotechnology, 41500 Larissa, Greece
| | | | - Chiara Perruchon
- University of Thessaly, Department of Biochemistry and Biotechnology, Lab of Plant and Environmental Biotechnology, 41500 Larissa, Greece
| | - Anastasia Stamatopoulou
- University of Thessaly, Department of Biochemistry and Biotechnology, Lab of Plant and Environmental Biotechnology, 41500 Larissa, Greece
| | | | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Lab of Plant and Environmental Biotechnology, 41500 Larissa, Greece.
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Deng T, Wang H, Yang K. Phenol biodegradation by isolated Citrobacter strain under hypersaline conditions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:504-510. [PMID: 29377834 DOI: 10.2166/wst.2017.543] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Phenol is a toxic pollutant in many kinds of hypersaline industrial effluents that should be treated properly before discharged into water bodies. In this work, a halophilic strain which could utilize phenol as the sole source of carbon and energy was isolated. Based on 16S rRNA results, it was identified as a member of Citrobacter. The phenol biodegradation ability and cell growth of the strain was evaluated with the variation of initial phenol concentration and salinity. The effect of temperature and pH on phenol removal was also investigated. The results showed that the strain was capable of withstanding high phenol (up to 1,100 mg L-1) environment with varying salinity conditions (0-10% of NaCl). The optimal initial phenol concentration was 400 mg L-1, at which the average removal rates of phenol peaked at 10.8 mg L-1 h-1. The higher initial concentration of phenol could inhibit the microbial metabolism. The optimal temperature, pH, and salinity were 35 °C, 6.0, and 0%, respectively. Under these conditions, 400 mg L-1 of phenol could be completely degraded within 20 h. The high removal rates of phenol by the strain might provide an alternative for treating phenolic wastewaters containing high salinity.
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Affiliation(s)
- Tao Deng
- School of Civil Engineering, Wuhan University, Wuhan 430072, China E-mail:
| | - Hongyu Wang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China E-mail:
| | - Kai Yang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China E-mail:
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15
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López-Loveira E, Ariganello F, Medina MS, Centrón D, Candal R, Curutchet G. Degradation alternatives for a commercial fungicide in water: biological, photo-Fenton, and coupled biological photo-Fenton processes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:25634-25644. [PMID: 27640058 DOI: 10.1007/s11356-016-7602-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 09/05/2016] [Indexed: 06/06/2023]
Abstract
Imazalil (IMZ) is a widely used fungicide for the post-harvest treatment of citrus, classified as "likely to be carcinogenic in humans" for EPA, that can be only partially removed by conventional biological treatment. Consequently, specific or combined processes should be applied to prevent its release to the environment. Biological treatment with adapted microorganism consortium, photo-Fenton, and coupled biological photo-Fenton processes were tested as alternatives for the purification of water containing high concentration of the fungicide and the coadjutants present in the commercial formulation. IMZ-resistant consortium with the capacity to degrade IMZ in the presence of a C-rich co-substrate was isolated from sludge coming from a fruit packaging company wastewater treatment plant. This consortium was adapted to resist and degrade the organics present in photo-Fenton-oxidized IMZ water solution. Bacteria colonies from the consortia were isolated and identified. The effect of H2O2 initial concentration and dosage on IMZ degradation rate, average oxidation state (AOS), organic acid concentration, oxidation, and mineralization percentage after photo-Fenton process was determined. The application of biological treatment to the oxidized solutions notably decreased the total organic carbon (TOC) in solution. The effect of the oxidation degree, limited by H2O2 concentration and dosage, on the percentage of mineralization obtained after the biological treatment was determined and explained in terms of changes in AOS. The concentration of H2O2 necessary to eliminate IMZ by photo-Fenton and to reduce TOC and chemical oxygen demand (COD) by biological treatment, in order to allow the release of the effluents to rivers with different flows, was estimated.
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Affiliation(s)
- Elsa López-Loveira
- 3iA-UNSAM, Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Campus Miguelete, Av. 25 de mayo y Francia, B1650HMP General San Martín, Provincia de Buenos Aires, Argentina
| | - Federico Ariganello
- 3iA-UNSAM, Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Campus Miguelete, Av. 25 de mayo y Francia, B1650HMP General San Martín, Provincia de Buenos Aires, Argentina
| | - María Sara Medina
- 3iA-UNSAM, Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Campus Miguelete, Av. 25 de mayo y Francia, B1650HMP General San Martín, Provincia de Buenos Aires, Argentina
| | - Daniela Centrón
- IMPAM-UBA, Laboratorio de Investigaciones en Mecanismos y Resistencias a Antibióticos, CONICET, Universidad Nacional de Buenos Aires, Paraguay 2155, C1121ABG, Ciudad de Buenos Aires, Argentina
| | - Roberto Candal
- 3iA-UNSAM, Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Campus Miguelete, Av. 25 de mayo y Francia, B1650HMP General San Martín, Provincia de Buenos Aires, Argentina.
| | - Gustavo Curutchet
- 3iA-UNSAM, Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Campus Miguelete, Av. 25 de mayo y Francia, B1650HMP General San Martín, Provincia de Buenos Aires, Argentina
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Characterization of the biodegradation, bioremediation and detoxification capacity of a bacterial consortium able to degrade the fungicide thiabendazole. Biodegradation 2017; 28:383-394. [DOI: 10.1007/s10532-017-9803-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 07/19/2017] [Indexed: 10/19/2022]
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17
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Perruchon C, Vasileiadis S, Rousidou C, Papadopoulou ES, Tanou G, Samiotaki M, Garagounis C, Molassiotis A, Papadopoulou KK, Karpouzas DG. Metabolic pathway and cell adaptation mechanisms revealed through genomic, proteomic and transcription analysis of a Sphingomonas haloaromaticamans strain degrading ortho-phenylphenol. Sci Rep 2017; 7:6449. [PMID: 28743883 PMCID: PMC5527002 DOI: 10.1038/s41598-017-06727-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/15/2017] [Indexed: 12/14/2022] Open
Abstract
Ortho-phenylphenol (OPP) is a fungicide contained in agro-industrial effluents produced by fruit-packaging plants. Within the frame of developing bio-strategies to detoxify these effluents, an OPP-degrading Sphingomonas haloaromaticamans strain was isolated. Proteins/genes with a putative catabolic role and bacterium adaptation mechanisms during OPP degradation were identified via genomic and proteomic analysis. Transcription analysis of all putative catabolic genes established their role in the metabolism of OPP. The formation of key transformation products was verified by chromatographic analysis. Genomic analysis identified two orthologous operons encoding the ortho-cleavage of benzoic acid (BA) (ben/cat). The second ben/cat operon was located in a 92-kb scaffold along with (i) an operon (opp) comprising genes for the transformation of OPP to BA and 2-hydroxypenta-2,4-dienoate (and genes for its transformation) and (ii) an incomplete biphenyl catabolic operon (bph). Proteomics identified 13 up-regulated catabolic proteins when S. haloaromaticamans was growing on OPP and/or BA. Transcription analysis verified the key role of the catabolic operons located in the 92-kb scaffold, and flanked by transposases, on the transformation of OPP by S. haloaromaticamans. A flavin-dependent monoxygenase (OppA1), one of the most up-regulated proteins in the OPP-growing cells, was isolated via heterologous expression and its catabolic activity was verified in vitro.
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Affiliation(s)
- Chiara Perruchon
- Department of Biochemistry and Biotechnology, University of Thessaly, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Sotirios Vasileiadis
- University of South Australia, Future Industries Institute, Mawson Lakes, Australia
| | - Constantina Rousidou
- Department of Biochemistry and Biotechnology, University of Thessaly, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Evangelia S Papadopoulou
- Department of Biochemistry and Biotechnology, University of Thessaly, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Georgia Tanou
- Aristotle University of Thessaloniki, School of Agriculture, Thessaloniki, Greece
| | - Martina Samiotaki
- Biomedical Sciences Research Center "Alexander Fleming", Vari, 16672, Greece
| | - Constantinos Garagounis
- Department of Biochemistry and Biotechnology, University of Thessaly, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | | | - Kalliope K Papadopoulou
- Department of Biochemistry and Biotechnology, University of Thessaly, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Dimitrios G Karpouzas
- Department of Biochemistry and Biotechnology, University of Thessaly, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece.
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18
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Olak-Kucharczyk M, Ledakowicz S. Advanced oxidation of preservative agents in H 2O 2/UVC system - Kinetics study, transformation products and toxicity assessment. JOURNAL OF HAZARDOUS MATERIALS 2017; 333:348-357. [PMID: 28411531 DOI: 10.1016/j.jhazmat.2017.03.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/24/2017] [Accepted: 03/22/2017] [Indexed: 06/07/2023]
Abstract
Phenylphenol isomers (hydroxylated derivatives of biphenyl) are widely used as a preservative agents and disinfectants in many branches of industry. This work focuses on removal of phenylphenol isomers from aqueous solution using H2O2/UVC process. The influence of different operating variables such as pH, initial concentration of hydrogen peroxide, initial concentration of target compounds, fluence rate and presence of radical scavengers on degradation rate was investigated. Moreover, transformation products and toxicity of the reaction solutions were studied. The reaction rate constants of hydroxyl radicals with phenylphenol isomers were determined by using classical and competition kinetics. The value of reaction rate constant depends on the position of the hydroxyl group in the aromatic ring and follows the order: ortho- phenylphenol<meta- phenylphenol<para- phenylphenol. The main by-products of initial degradation steps were dihydroxybiphenyl isomers, phenol and isomers of 2,4-hexadienoic-6-oxo-6-phenyl acid or trihydroxybiphenyl. A properly selected degradation time led to mineralization of reaction solution, and after 2h of reaction the total organic carbon reduction was equaled to 89, 87 and 71% for ortho- phenylphenol, meta- phenylphenol and para- phenylphenol solution, respectively. The application of advanced oxidation in H2O2/UVC system led to achieving non-toxic reaction solutions.
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Affiliation(s)
- Magdalena Olak-Kucharczyk
- Textile Research Institute, ul. Brzezinska 5/15, 92-103 Lodz, Poland; Lodz University of Technology, Faculty of Process and Environmental Engineering, Department of Bioprocess Engineering, ul. Wolczanska 213, 90-924 Lodz, Poland.
| | - Stanisław Ledakowicz
- Lodz University of Technology, Faculty of Process and Environmental Engineering, Department of Bioprocess Engineering, ul. Wolczanska 213, 90-924 Lodz, Poland
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Perruchon C, Chatzinotas A, Omirou M, Vasileiadis S, Menkissoglou-Spiroudi U, Karpouzas DG. Isolation of a bacterial consortium able to degrade the fungicide thiabendazole: the key role of a Sphingomonas phylotype. Appl Microbiol Biotechnol 2017; 101:3881-3893. [DOI: 10.1007/s00253-017-8128-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 01/09/2017] [Accepted: 01/12/2017] [Indexed: 11/30/2022]
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20
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Karas PA, Perruchon C, Karanasios E, Papadopoulou ES, Manthou E, Sitra S, Ehaliotis C, Karpouzas DG. Integrated biodepuration of pesticide-contaminated wastewaters from the fruit-packaging industry using biobeds: Bioaugmentation, risk assessment and optimized management. JOURNAL OF HAZARDOUS MATERIALS 2016; 320:635-644. [PMID: 27501880 DOI: 10.1016/j.jhazmat.2016.07.071] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/02/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
Wastewaters from fruit-packaging plants contain high loads of toxic and persistent pesticides and should be treated on site. We evaluated the depuration performance of five pilot biobeds against those effluents. In addition we tested bioaugmentation with bacterial inocula as a strategy for optimization of their depuration capacity. Finally we determined the composition and functional dynamics of the microbial community via q-PCR. Practical issues were also addressed including the risk associated with the direct environmental disposal of biobed-treated effluents and decontamination methods for the spent packing material. Biobeds showed high depuration capacity (>99.5%) against all pesticides with bioaugmentation maximizing their depuration performance against the persistent fungicide thiabendazole (TBZ). This was followed by a significant increase in the abundance of bacteria, fungi and of catabolic genes of aromatic compounds catA and pcaH. Bioaugmentation was the most potent decontamination method for spent packing material with composting being an effective alternative. Risk assessment based on practical scenarios (pome and citrus fruit-packaging plants) and the depuration performance of the pilot biobeds showed that discharge of the treated effluents into an 0.1-ha disposal site did not entail an environmental risk, except for TBZ-containing effluents where a larger disposal area (0.2ha) or bioaugmentation alleviated the risk.
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Affiliation(s)
- Panagiotis A Karas
- University of Thessaly, Department of Biochemistry and Biotechnology, Ploutonos 26 and Aiolou, 41221 Larissa, Greece
| | - Chiara Perruchon
- University of Thessaly, Department of Biochemistry and Biotechnology, Ploutonos 26 and Aiolou, 41221 Larissa, Greece
| | | | - Evangelia S Papadopoulou
- University of Thessaly, Department of Biochemistry and Biotechnology, Ploutonos 26 and Aiolou, 41221 Larissa, Greece
| | - Elena Manthou
- University of Thessaly, Department of Biochemistry and Biotechnology, Ploutonos 26 and Aiolou, 41221 Larissa, Greece
| | - Stefania Sitra
- University of Thessaly, Department of Biochemistry and Biotechnology, Ploutonos 26 and Aiolou, 41221 Larissa, Greece
| | - Constantinos Ehaliotis
- Agricultural University of Athens, Department of Natural Resources and Agricultural Engineering, Laboratory of Soils and Agricultural Chemistry, 75 IeraOdos Str., 11855 Athens, Greece
| | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Ploutonos 26 and Aiolou, 41221 Larissa, Greece.
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21
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Thelusmond JR, Strathmann TJ, Cupples AM. The identification of carbamazepine biodegrading phylotypes and phylotypes sensitive to carbamazepine exposure in two soil microbial communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 571:1241-1252. [PMID: 27481454 DOI: 10.1016/j.scitotenv.2016.07.154] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 06/06/2023]
Abstract
Carbamazepine (CBZ), an antiepileptic drug, has been introduced into agricultural soils via irrigation with treated wastewater and biosolids application. Such contamination is problematic because CBZ is persistent and the risks to ecosystems or human health are unknown. The current study examined CBZ biodegradation in two agricultural soils (soil 1 and 2) and the effects on the soil microbial communities during CBZ exposure. The experimental design involved three CBZ concentrations (50, 500, 5000ng/g), under aerobic as well as anaerobic conditions. CBZ concentrations were determined using solid phase extraction and LC MS/MS. The effect of CBZ on the soil microbial community was investigated using high throughput sequencing and a computational approach to predict functional composition of the metagenomes (phylogenetic investigation of communities by reconstruction of unobserved states, PICRUSt). The most significant CBZ biodegradation occurred in soil 1 under aerobic conditions. In contrast, CBZ biodegradation was limited under anaerobic conditions in soil 1 and under both conditions in soil 2. For soil 1, several phylotypes were enriched following CBZ degradation compared to the controls, including unclassified Sphingomonadaceae, Xanthomonadaceae and Rhodobacteraceae, as well as Sphingomonas, Aquicella and Microvirga. These phylotypes are considered putative CBZ degraders as they appear to be benefiting from CBZ biodegradation. PICRUSt revealed that soil 1 contained a greater abundance of xenobiotic degrading genes compared to soil 2, and thus, this analysis method offers a potential valuable approach for predicting CBZ attenuation in soils. PICRUSt analysis also implicated Sphingomonadaceae and Xanthomonadaceae in drug metabolism. Interestingly, numerous phylotypes decreased in abundance following CBZ exposure and these varied with soil type, concentration, duration of exposure, and the availability of oxygen. For three phylotypes (Flavobacterium, 3 genus incertae sedis and unclassified Bacteroidetes), the relative abundance was reduced in both soils, indicating a notable sensitivity to CBZ for these microorganisms.
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Affiliation(s)
- Jean-Rene Thelusmond
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Timothy J Strathmann
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401, USA
| | - Alison M Cupples
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA.
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Papadopoulou ES, Tsachidou B, Sułowicz S, Menkissoglu-Spiroudi U, Karpouzas DG. Land Spreading of Wastewaters from the Fruit-Packaging Industry and Potential Effects on Soil Microbes: Effects of the Antioxidant Ethoxyquin and Its Metabolites on Ammonia Oxidizers. Appl Environ Microbiol 2016; 82:747-55. [PMID: 26590271 PMCID: PMC4711131 DOI: 10.1128/aem.03437-15] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 11/12/2015] [Indexed: 11/20/2022] Open
Abstract
Thiabendazole (TBZ), imazalil (IMZ), ortho-phenylphenol (OPP), diphenylamine (DPA), and ethoxyquin (EQ) are used in fruit-packaging plants (FPP) with the stipulation that wastewaters produced by their application would be depurated on site. However, no such treatment systems are currently in place, leading FPP to dispose of their effluents in agricultural land. We investigated the dissipation of those pesticides and their impact on soil microbes known to have a key role on ecosystem functioning. OPP and DPA showed limited persistence (50% dissipation time [DT50], 0.6 and 1.3 days) compared to TBZ and IMZ (DT50, 47.0 and 150.8 days). EQ was rapidly transformed to the short-lived quinone imine (QI) (major metabolite) and the more persistent 2,4-dimethyl-6-ethoxyquinoline (EQNL) (minor metabolite). EQ and OPP exerted significant inhibition of potential nitrification, with the effect of the former being more persistent. This was not reflected in the abundance (determined by quantitative PCR [qPCR]) of the amoA gene of ammonia-oxidizing bacteria (AOB) and archaea (AOA). Considering the above discrepancy and the metabolic pattern of EQ, we further investigated the hypothesis that its metabolites and not only EQ were toxic to ammonia oxidizers. Potential nitrification, amoA gene abundance, and amoA gene transcripts of AOB and AOA showed that QI was probably responsible for the inhibition of nitrification. Our findings have serious ecological and practical implications for soil productivity and N conservation in agriculturally impacted ecosystems and stress the need to include metabolites and RNA-based methods when the soil microbial toxicity of pesticides is assessed.
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Affiliation(s)
- Evangelia S Papadopoulou
- Aristotle University of Thessaloniki, Faculty of Agriculture, Forestry and Natural Environment, Laboratory of Pesticide Science, Thessaloniki, Greece University of Thessaly, Department of Biochemistry and Biotechnology, Larisa, Greece
| | - Bella Tsachidou
- University of Thessaly, Department of Biochemistry and Biotechnology, Larisa, Greece
| | | | - Urania Menkissoglu-Spiroudi
- Aristotle University of Thessaloniki, Faculty of Agriculture, Forestry and Natural Environment, Laboratory of Pesticide Science, Thessaloniki, Greece
| | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Larisa, Greece
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