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Hidalgo-Martinez K, Giachini AJ, Schneider M, Soriano A, Baessa MP, Martins LF, de Oliveira VM. Shifts in structure and dynamics of the soil microbiome in biofuel/fuel blend-affected areas triggered by different bioremediation treatments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:33663-33684. [PMID: 38687451 DOI: 10.1007/s11356-024-33304-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 04/09/2024] [Indexed: 05/02/2024]
Abstract
The use of biofuels has grown in the last decades as a consequence of the direct environmental impacts of fossil fuel use. Elucidating structure, diversity, species interactions, and assembly mechanisms of microbiomes is crucial for understanding the influence of environmental disturbances. However, little is known about how contamination with biofuel/petrofuel blends alters the soil microbiome. Here, we studied the dynamics in the soil microbiome structure and composition of four field areas under long-term contamination with biofuel/fossil fuel blends (ethanol 10% and gasoline 90%-E10; ethanol 25% and gasoline 75%-E25; soybean biodiesel 20% and diesel 80%-B20) submitted to different bioremediation treatments along a temporal gradient. Soil microbiomes from biodiesel-polluted areas exhibited higher richness and diversity index values and more complex microbial communities than ethanol-polluted areas. Additionally, monitored natural attenuation B20-polluted areas were less affected by perturbations caused by bioremediation treatments. As a consequence, once biostimulation was applied, the degradation was slower compared with areas previously actively treated. In soils with low diversity and richness, the impact of bioremediation treatments on the microbiomes was greater, and as a result, the hydrocarbon degradation extent was higher. The network analysis showed that all abundant keystone taxa corresponded to well-known degraders, suggesting that the abundant species are core targets for biostimulation in soil remediation processes. Altogether, these findings showed that the knowledge gained through the study of microbiomes in contaminated areas may help design and conduct optimized bioremediation approaches, paving the way for future rationalized and efficient pollutant mitigation strategies.
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Affiliation(s)
- Kelly Hidalgo-Martinez
- Divisão de Recursos Microbianos, Centro Pluridisciplinar de Pesquisas Químicas, Biológicas E Agrícolas (CPQBA), Universidade Estadual de Campinas (UNICAMP), Paulínia, SP, CEP 13148-218, Brazil.
- Programa de Pós-Graduação de Genética E Biologia Molecular, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, CEP 13083-970, Brazil.
| | - Admir José Giachini
- Núcleo Ressacada de Pesquisas Em Meio Ambiente (REMA)-Department of Microbiology, Federal University of Santa Catarina (UFSC), Campus Universitário Sul da Ilha-Rua José Olímpio da Silva, 1326-Bairro Tapera, Florianópolis, SC, 88049-500, Brazil
| | - Marcio Schneider
- Núcleo Ressacada de Pesquisas Em Meio Ambiente (REMA)-Department of Microbiology, Federal University of Santa Catarina (UFSC), Campus Universitário Sul da Ilha-Rua José Olímpio da Silva, 1326-Bairro Tapera, Florianópolis, SC, 88049-500, Brazil
| | - Adriana Soriano
- PETROBRAS/R&D Center (CENPES), Cidade Universitária, Av. Horácio Macedo, Ilha Do Fundão, Rio de Janeiro, 950, ZIP 21941-915, Brazil
| | - Marcus Paulus Baessa
- PETROBRAS/R&D Center (CENPES), Cidade Universitária, Av. Horácio Macedo, Ilha Do Fundão, Rio de Janeiro, 950, ZIP 21941-915, Brazil
| | - Luiz Fernando Martins
- PETROBRAS/R&D Center (CENPES), Cidade Universitária, Av. Horácio Macedo, Ilha Do Fundão, Rio de Janeiro, 950, ZIP 21941-915, Brazil
| | - Valéria Maia de Oliveira
- Divisão de Recursos Microbianos, Centro Pluridisciplinar de Pesquisas Químicas, Biológicas E Agrícolas (CPQBA), Universidade Estadual de Campinas (UNICAMP), Paulínia, SP, CEP 13148-218, Brazil
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Wilms W, Homa J, Woźniak-Karczewska M, Owsianiak M, Chrzanowski Ł. Biodegradation half-lives of biodiesel fuels in aquatic and terrestrial systems: A review. CHEMOSPHERE 2023; 313:137236. [PMID: 36403813 DOI: 10.1016/j.chemosphere.2022.137236] [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: 06/28/2022] [Revised: 11/01/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Information on biodegradation kinetics of biodiesel fuels is a key aspect in risk and impact assessment practice and in selection of appropriate remediation strategies. Unfortunately, this information is scattered, while factors influencing variability in biodegradation rates are still not fully understood. Therefore, we systematically reviewed 32 scientific literature sources providing 142 biodegradation and 56 mineralization half-lives of diesel and biodiesel fuels in various experimental systems. The analysis focused on the variability in half-lives across fuels and experimental conditions, reporting sets of averaged half-life values and their statistical uncertainty. Across all data points, biodegradation half-lives ranged from 9 to 62 days, and were 2-5.5 times shorter than mineralization half-lives. Across all fuels, biodegradation and mineralization half-lives were 2.5-8.5 times longer in terrestrial systems when compared to aquatic systems. The half-lives were generally shorter for blends with increasing biodiesel content, although differences in number of data points from various experiments masked differences in half-lives between different fuels. This in most cases resulted in lack of statistically significant effects of the type of blends and experimental system on biodegradation half-lives. Our data can be used for improved characterization of risks and impacts of biodiesel fuels in aerobic aquatic and terrestrial environments, while more experiments are required to quantify biodegradation kinetics in anaerobic conditions. Relatively high biodegradability of biodiesel may suggest that passive approaches to degrade and dissipate contaminants in situ, like monitored natural attenuation, may be appropriate remediation strategies for biodiesel fuels.
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Affiliation(s)
- Wiktoria Wilms
- Department of Chemical Technology, Poznan University of Technology, 60-965, Poznań, Poland
| | - Jan Homa
- Department of Chemical Technology, Poznan University of Technology, 60-965, Poznań, Poland
| | | | - Mikołaj Owsianiak
- Quantitative Sustainability Assessment, Department of Environmental and Resource Engineering, Technical University of Denmark, Produktionstorvet 424, 2800 Kgs. Lyngby, Denmark.
| | - Łukasz Chrzanowski
- Department of Chemical Technology, Poznan University of Technology, 60-965, Poznań, Poland
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Huang X, Xu Y, Lin Q, Guo W, Zhao D, Wang C, Wang L, Zhou H, Jiang Y, Cui W, Qiao X, Li Y, Ma G, Tang L. Determination of antiviral action of long non-coding RNA loc107051710 during infectious bursal disease virus infection due to enhancement of interferon production. Virulence 2021; 11:68-79. [PMID: 31865850 PMCID: PMC6961729 DOI: 10.1080/21505594.2019.1707957] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The functions and profiles of lncRNAs during infectious bursal disease virus (IBDV) infection have not been determined, yet. The objectives of this study were to determine the antiviral action of loc107051710 lncRNA during IBDV infection by investigating the relationship between loc107051710 and IRF8, Type I IFN, STATs, and ISGs. DF-1 cells were either left untreated as non-infected controls (n = 1) or infected with IBDV (n = 3). RNA sequencing was applied for analysis of mRNAs and lncRNAs expression. Differentially expressed genes were verified by RT-qPCR. Then identification, of 230 significantly different expressed genes (182 mRNAs and 48 lncRNA) by pairwise comparison of the infected and control groups, was carried out. The functions of differentially expressed lncRNAs were investigated by selection of lncRNAs and mRNAs significantly enriched in the aforementioned biological processes and signaling pathways for construction of lncRNA-mRNA co-expression networks. The techniques of gene ontology and Kyoto Encyclopedia of Genes and Genomes pathways were applied. It was suggested that these differentially expressed genes were involved in the interaction between the host and IBDV. Loc107051710 was found to have potential antiviral effects. RT-qPCR and western blot were applied and revealed that loc107051710 was required for induction of IRF8, type I IFN, STAT, and ISG expression, and its knockdown promoted IBDV replication. By fluorescence in situ hybridization, it was found that loc107051710 was translocated from the nucleus to the cytoplasm after infection with IBDV. Overall, loc107051710 promoted the production of IFN-α and IFN-β by regulating IRF8, thereby promoting the antiviral activity of ISGs.
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Affiliation(s)
- Xuewei Huang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Yigang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Qingyu Lin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Weilong Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Dongfang Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Chunmei Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
| | - Guangpeng Ma
- Agricultural High Technology Department, China Rural Technology Development Center, Beijing China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, P.R. China
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Microaerobic conditions caused the overwhelming dominance of Acinetobacter spp. and the marginalization of Rhodococcus spp. in diesel fuel/crude oil mixture-amended enrichment cultures. Arch Microbiol 2019; 202:329-342. [PMID: 31664492 PMCID: PMC7012980 DOI: 10.1007/s00203-019-01749-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/02/2019] [Accepted: 10/10/2019] [Indexed: 02/03/2023]
Abstract
The aim of the present study was to reveal how different microbial communities evolve in diesel fuel/crude oil-contaminated environments under aerobic and microaerobic conditions. To investigate this question, aerobic and microaerobic bacterial enrichments amended with a diesel fuel/crude oil mixture were established and analysed. The representative aerobic enrichment community was dominated by Gammaproteobacteria (64.5%) with high an abundance of Betaproteobacteriales (36.5%), followed by Alphaproteobacteria (8.7%), Actinobacteria (5.6%), and Candidatus Saccharibacteria (4.5%). The most abundant alkane monooxygenase (alkB) genotypes in this enrichment could be linked to members of the genus Rhodococcus and to a novel Gammaproteobacterium, for which we generated a high-quality draft genome using genome-resolved metagenomics of the enrichment culture. Contrarily, in the microaerobic enrichment, Gammaproteobacteria (99%) overwhelmingly dominated the microbial community with a high abundance of the genera Acinetobacter (66.3%), Pseudomonas (11%) and Acidovorax (11%). Under microaerobic conditions, the vast majority of alkB gene sequences could be linked to Pseudomonas veronii. Consequently, results shed light on the fact that the excellent aliphatic hydrocarbon degrading Rhodococcus species favour clear aerobic conditions, while oxygen-limited conditions can facilitate the high abundance of Acinetobacter species in aliphatic hydrocarbon-contaminated subsurface environments.
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Lin J, Wang Z, Wang J, Yang Q. Microarray analysis of infectious bronchitis virus infection of chicken primary dendritic cells. BMC Genomics 2019; 20:557. [PMID: 31286855 PMCID: PMC6615177 DOI: 10.1186/s12864-019-5940-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 06/26/2019] [Indexed: 02/07/2023] Open
Abstract
Background Avian infectious bronchitis virus (IBV) is a major respiratory disease-causing agent in birds that leads to significant losses. Dendritic cells (DCs) are specialised cells responsible for sampling antigens and presenting them to T cells, which also play an essential role in recognising and neutralising viruses. Recent studies have suggested that non-coding RNAs may regulate the functional program of DCs. Expression of host non-coding RNAs changes markedly during infectious bronchitis virus infection, but their role in regulating host immune function has not been explored. Here, microarrays of mRNAs, miRNAs, and lncRNAs were globally performed to analyse how avian DCs respond to IBV. Results First, we found that IBV stimulation did not enhance the maturation ability of avian DCs. Interestingly, inactivated IBV was better able than IBV to induce DC maturation and activate lymphocytes. We identified 1093 up-regulated and 845 down-regulated mRNAs in IBV-infected avian DCs. Gene Ontology analysis suggested that cellular macromolecule and protein location (GO-BP) and transcription factor binding (GO-MF) were abundant in IBV-stimulated avian DCs. Meanwhile, pathway analysis indicated that the oxidative phosphorylation and leukocyte transendothelial migration signalling pathways might be activated in the IBV group. Moreover, alteration of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) was detected in IBV-stimulated avian DCs. In total, 19 significantly altered (7 up and 12 down) miRNAs and 101 (75 up and 26 down) lncRNAs were identified in the IBV-treated group. Further analysis showed that the actin cytoskeleton and MAPK signal pathway were related to the target genes of IBV-stimulated miRNAs. Finally, our study identified 2 TF-microRNA and 53 TF–microRNA–mRNA interactions involving 1 TF, 2 miRNAs, and 53 mRNAs in IBV-stimulated avian DCs. Conclusions Our research suggests a new mechanism to explain why IBV actively blocks innate responses needed for inducing immune gene expression and also provides insight into the pathogenic mechanisms of avian IBV. Electronic supplementary material The online version of this article (10.1186/s12864-019-5940-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jian Lin
- College of Life Sciences, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu, 210095, People's Republic of China.,College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu, 210095, People's Republic of China
| | - Zhisheng Wang
- National Veterinary Product Engineering Research Center, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Jialu Wang
- College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu, 210095, People's Republic of China
| | - Qian Yang
- College of Life Sciences, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu, 210095, People's Republic of China. .,College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu, 210095, People's Republic of China.
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Ławniczak Ł, Marecik R. Comparison of metalworking fluids biodegradation efficiency by autochthonous and environmental communities. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 232:625-635. [PMID: 30530272 DOI: 10.1016/j.jenvman.2018.11.132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 11/07/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
The aim of this study was to evaluate the biodegradation potential of microbiota isolated from different environmental niches towards different types of metalworking fluids (MWF). The first experimental stage was focused on the assessment of biochemical oxygen demand reduction efficiency of autochthonous and environmental microbial communities. Based on the obtained results, the following order describing the biodegradation potential of communities from the studied niches was established: petroleum contaminated soil > waste repository ≥ waste MWF tanks > pesticide-treated field > activated sludge > municipal sewage effluents. For comparative purposes, the most efficient community originating from petroleum contaminated soil (PCS1) was selected for further studies along with the most efficient community originating from a waste MWF tank (WMT1). The studied communities achieved 100% biodegradation efficiency of decanedioic and dodecanedioic acids as well as glycerine and polyethoxylated dodecanol. However, the PCS1 community was more versatile and displayed significantly higher biodegradation efficiency of mineral oil (80% compared to 50% in case of WMT1). Similarly, experiments using pristine and spent MWF solutions confirmed that the PCS1 community outperformed the WMT1 community during the biodegradation of MWF containing oil as the main component (COD reduction of 80, 60 and 30% in case of semi-synthetic MWF, soluble oil and spent MWF, respectively). Results of community dynamics assessment using quantitative real-time PCR after the biodegradation of different types of MWF confirmed that the PCS1 community was characterized by high genetic stability and allowed to indicate the potential 'key players'.
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Affiliation(s)
- Łukasz Ławniczak
- Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60-965, Poznań, Poland.
| | - Roman Marecik
- Department of Biotechnology and Food Microbiology, University of Life Sciences in Poznań, Wojska Polskiego 48, 60-627, Poznań, Poland
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Hydrocarbonoclastic Ascomycetes to enhance co-composting of total petroleum hydrocarbon (TPH) contaminated dredged sediments and lignocellulosic matrices. N Biotechnol 2019; 50:27-36. [PMID: 30654133 DOI: 10.1016/j.nbt.2019.01.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 01/09/2019] [Accepted: 01/13/2019] [Indexed: 02/06/2023]
Abstract
Four new Ascomycete fungi capable of degrading diesel oil were isolated from sediments of a river estuary mainly contaminated by shipyard fuels or diesel oil. The isolates were identified as species of Lambertella, Penicillium, Clonostachys, and Mucor. The fungal candidates degraded and adsorbed the diesel oil in suspension cultures. The Lambertella sp. isolate displayed the highest percentages of oxidation of diesel oil and was characterised by the capacity to utilise the latter as a sole carbon source. This isolate showed extracellular laccase and Mn-peroxidase activities in the presence of diesel oil. It was tested for capacity to accelerate the process of decontamination of total petroleum hydrocarbon contaminated sediments, co-composted with lignocellulosic residues and was able to promote the degradation of 47.6% of the TPH contamination (54,074 ± 321 mg TPH/Kg of sediment) after two months of incubation. The response of the bacterial community during the degradation process was analysed by 16S rRNA gene meta-barcoding.
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Kadri T, Rouissi T, Magdouli S, Brar SK, Hegde K, Khiari Z, Daghrir R, Lauzon JM. Production and characterization of novel hydrocarbon degrading enzymes from Alcanivorax borkumensis. Int J Biol Macromol 2018; 112:230-240. [DOI: 10.1016/j.ijbiomac.2018.01.177] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 01/26/2018] [Accepted: 01/27/2018] [Indexed: 11/16/2022]
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Morlett Chávez JA, Ascacio Martínez JÁ, Haskins WE, Acuña Askar K. Gene Expression during BTEX Biodegradation by a Microbial Consortium Acclimatized to Unleaded Gasoline and a Pseudomonas putida Strain (HM346961) Isolated from It. Pol J Microbiol 2017; 66:189-199. [DOI: 10.5604/01.3001.0010.7836] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Pseudomonas putida strain (HM346961) was isolated from a consortium of bacteria acclimatized to unleaded gasoline-contaminated water. The consortium can efficiently remove benzene, toluene, ethylbenzene and xylene (BTEX) isomers, and a similar capability was observed with the P. putida strain. Proteome of this strain showed certain similarities with that of other strains exposed to the hydrocarbon compounds. Furthermore, the toluene di-oxygenase (tod) gene was up-regulated in P. putida strain when exposed to toluene, ethylbenzene, xylene, and BTEX. In contrast, the tod gene of P. putida F1 (ATCC 700007) was up-regulated only in the presence of toluene and BTEX. Several differences in the nucleotide and protein sequences of these two tod genes were observed. This suggests that tod up-regulation in P. putida strain may partially explain their great capacity to remove aromatic compounds, relative to P. putida F1. Therefore, new tod and P. putida strain are promising for various environmental applications.
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Affiliation(s)
- Jesús A. Morlett Chávez
- Laboratory of Genomics and Bioinformatics, Autonomous University of Nuevo Leon, Monterrey Nuevo León, Mexico; Laboratory of Biotechnology, Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Autonomous University of Nuevo Leon, Monterrey Nuevo León, Mexico
| | - Jorge Á. Ascacio Martínez
- Laboratory of Biotechnology, Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Autonomous University of Nuevo Leon, Monterrey Nuevo León, Mexico
| | - William E. Haskins
- Departments of Biology and Chemistry, University of Texas at San Antonio, San Antonio, TX, USA; RCMI Proteomics, University of Texas at San Antonio, San Antonio, TX, USA; Protein Biomarkers Cores, University of Texas at San Antonio, San Antonio, TX, USA
| | - Karim Acuña Askar
- Laboratory of Environmental Bioremediation, Department of Microbiology, Faculty of Medicine, Autonomous University of Nuevo Leon, Monterrey Nuevo León, Mexico
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Sydow M, Owsianiak M, Szczepaniak Z, Framski G, Smets BF, Ławniczak Ł, Lisiecki P, Szulc A, Cyplik P, Chrzanowski Ł. Evaluating robustness of a diesel-degrading bacterial consortium isolated from contaminated soil. N Biotechnol 2016; 33:852-859. [DOI: 10.1016/j.nbt.2016.08.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 08/23/2016] [Accepted: 08/23/2016] [Indexed: 10/21/2022]
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Lin J, Xia J, Zhang K, Yang Q. Genome-wide profiling of chicken dendritic cell response to infectious bursal disease. BMC Genomics 2016; 17:878. [PMID: 27816055 PMCID: PMC5097849 DOI: 10.1186/s12864-016-3157-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 10/12/2016] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Avian infectious bursal disease virus (IBDV) is a highly contagious, immunosuppressive disease of young chickens, which causes high mortality rates and large economic losses in the poultry industry. Dendritic cells (DCs), which are antigen-presenting cells, have the unique ability to induce both innate and acquired immune responses and may significantly influence virus pathogenicity. To understand the interaction between IBDV and DCs, a microarray was used to analyse the response of DCs infected by IBDV. RESULTS IBDV infection induced 479 upregulated and 466 downregulated mRNAs in chicken DCs. Analysis of Gene Ontology suggested that transcription from the RNA polymerase II promoter and the RNA biosynthetic process were enriched, and pathway analyses suggested that oxidative phosphorylation, as well as the T cell receptor and Interleukin-17 (IL-17) signalling pathways might be activated by IBDV infection. Moreover, microRNA (miRNA) and long non-coding RNA (lncRNA) alterations in IBDV-infected chicken DCs were observed. A total of 18 significantly upregulated or downregulated miRNAs and 441 significantly upregulated or downregulated lncRNAs were identified in IBDV-stimulated DCs. We constructed 42 transcription factor (TF)-miRNA-mRNA interactions involving 1 TF, 3 miRNAs, and 42 mRNAs in IBDV-stimulated DCs. Finally, we predicted the target genes of differentially expressed lncRNAs, and constructed lncRNA-mRNA regulatory networks. CONCLUSIONS The results of this study suggest a mechanism to explain how IBDV infection triggers an effective immune response in chicken DCs.
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Affiliation(s)
- Jian Lin
- College of Life Science, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Jing Xia
- College of Life Science, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Keyun Zhang
- College of Life Science, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Qian Yang
- College of Life Science, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu 210095 People’s Republic of China
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12
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Ramos DT, Lazzarin HSC, Alvarez PJJ, Vogel TM, Fernandes M, do Rosário M, Corseuil HX. Biodiesel presence in the source zone hinders aromatic hydrocarbons attenuation in a B20-contaminated groundwater. JOURNAL OF CONTAMINANT HYDROLOGY 2016; 193:48-53. [PMID: 27636988 DOI: 10.1016/j.jconhyd.2016.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/15/2016] [Accepted: 09/05/2016] [Indexed: 06/06/2023]
Abstract
The behavior of biodiesel blend spills have received limited attention in spite of the increasing and widespread introduction of biodiesel to the transportation fuel matrix. In this work, a controlled field release of biodiesel B20 (100L of 20:80 v/v soybean biodiesel and diesel) was monitored over 6.2years to assess the behavior and natural attenuation of constituents of major concern (e.g., BTEX (benzene, toluene, ethyl-benzene and xylenes) and PAHs (polycyclic aromatic hydrocarbons)) in a sandy aquifer material. Biodiesel was preferentially biodegraded compared to diesel aromatic compounds with a concomitant increase in acetate, methane (near saturation limit (≈22mgL-1)) and dissolved BTEX and PAH concentrations in the source zone during the first 1.5 to 2.0years after the release. Benzene and benzo(a)pyrene concentrations remained above regulatory limits in the source zone until the end of the experiment (6.2years after the release). Compared to a previous adjacent 100-L release of ethanol-amended gasoline, biodiesel/diesel blend release resulted in a shorter BTEX plume, but with higher residual dissolved hydrocarbon concentrations near the source zone. This was attributed to greater persistence of viscous (and less mobile) biodiesel than the highly-soluble and mobile ethanol in the source zone. This persistence of biodiesel/diesel NAPL at the source zone slowed BTEX and PAH biodegradation (by the establishment of an anaerobic zone) but reduced the plume length by reducing mobility. This is the first field study to assess biodiesel/diesel blend (B20) behavior in groundwater and its effects on the biodegradation and plume length of priority groundwater pollutants.
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Affiliation(s)
- Débora Toledo Ramos
- Federal University of Santa Catarina, Department of Sanitary and Environmental Engineering, Florianópolis, Santa Catarina, Brazil
| | - Helen Simone Chiaranda Lazzarin
- Federal University of Santa Catarina, Department of Sanitary and Environmental Engineering, Florianópolis, Santa Catarina, Brazil
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, MS-317, 6100 Main St, Houston, TX 77005, USA
| | - Timothy M Vogel
- Environmental Microbial Genomics Group, Laboratoire Ampère, CNRS UMR5005, Ecole Centrale de Lyon, Université de Lyon, Ecully, France
| | - Marilda Fernandes
- Federal University of Santa Catarina, Department of Sanitary and Environmental Engineering, Florianópolis, Santa Catarina, Brazil
| | - Mário do Rosário
- Petróleo Brasileiro Petrobras, Research Centre (CENPES), Rio de Janeiro, Rio de Janeiro, PO Box 21941598, Brazil
| | - Henry Xavier Corseuil
- Federal University of Santa Catarina, Department of Sanitary and Environmental Engineering, Florianópolis, Santa Catarina, Brazil.
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Shahi A, Aydin S, Ince B, Ince O. Evaluation of microbial population and functional genes during the bioremediation of petroleum-contaminated soil as an effective monitoring approach. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 125:153-160. [PMID: 26685788 DOI: 10.1016/j.ecoenv.2015.11.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 11/18/2015] [Accepted: 11/22/2015] [Indexed: 06/05/2023]
Abstract
This study investigated the abundance and diversity of soil n-alkane and polycyclic aromatic hydrocarbon (PAH)-degrading bacterial communities. It also investigated the quantity of the functional genes, the occurrence of horizontal gene transfer (HGT) in the identified bacterial communities and the effect that such HGT can have on biostimulation process. Illumina sequencing was used to detect the microbial diversity of petroleum-polluted soil prior to the biostimulation process, and quantitative real-time PCR was used to determine changes in the bacterial community and functional genes (alkB, phnAc and nah) expressions throughout the biostimulation of petroleum-contaminated soil. The illumine results revealed that γ-proteobacteria, Chloroflexi, Firmicutes, and δ-proteobacteria were the most dominant bacterial phyla in the contaminated site, and that most of the strains were Gram-negative. The results of the gene expression results revealed that gram-negative bacteria and alkB are critical to successful bioremediation. Failure to maintain the stability of hydrocarbon-degrading bacteria and functional gene will reduce the extend to which alkanes and PAHs are degraded. According to the results of the study, the application of a C:N:P ratio of was 100:15:1 in the biodegradation experiment resulted in the highest rate at which petroleum hydrocarbons were biodegraded. The diversity of pollutant-degrading bacteria and the effective transfer of degrading genes among resident microorganisms are essential factors for the successful biostimulation of petroleum hydrocarbons. As such, screening these factors throughout the biostimulation process represents an effective monitoring approach by which the success of the biostimulation can be assessed.
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Affiliation(s)
- Aiyoub Shahi
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Sevcan Aydin
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul, Turkey.
| | - Bahar Ince
- Institutes of Environmental Sciences, Bogazici University, Bebek, Istanbul, Turkey
| | - Orhan Ince
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul, Turkey
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Wu S, Yassine MH, Suidan MT, Venosa AD. Anaerobic biodegradation of soybean biodiesel and diesel blends under methanogenic conditions. WATER RESEARCH 2015; 87:395-402. [PMID: 26454635 DOI: 10.1016/j.watres.2015.09.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 08/29/2015] [Accepted: 09/12/2015] [Indexed: 06/05/2023]
Abstract
Biotransformation of soybean biodiesel and the inhibitory effect of petrodiesel were studied under methanogenic conditions. Biodiesel removal efficiency of more than 95% was achieved in a chemostat with influent biodiesel concentrations up to 2.45 g/L. The kinetics of anaerobic biodegradation of soybean biodiesel B100 (biodiesel only) with different petrodiesel loads was studied using biomass pre-acclimated to B100 and B80 (80% biodiesel and 20% petrodiesel). The results indicated that the biodiesel fraction of the blend could be effectively biodegraded, whereas petrodiesel was not biodegraded at all under methanogenic conditions. The presence of petrodiesel in blends with biodiesel had a greater inhibitory effect on the rate of biodegradation than the biodegradation efficiency (defined as the efficiency of methane production). Both the biodegradation rate coefficient and the methane production efficiency increased almost linearly with the increasing fraction of biodiesel. With the increasing fraction of petrodiesel, the biodegradation rate and efficiency were correlated with the concentration of soluble FAMEs in the water.
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Affiliation(s)
- Shuyun Wu
- Department of Biomedical, Chemical, and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45220, United States
| | - Mohamad H Yassine
- Department of Mathematics and Natural Sciences, College of Arts and Sciences, Gulf University for Science and Technology, Hawally 32093, Kuwait
| | - Makram T Suidan
- Faculty of Engineering and Architecture, American University of Beirut, P.O. Box 11-0236, Riad El-Solh, Beirut 1107 2020, Lebanon.
| | - Albert D Venosa
- U.S. Environmental Protection Agency (retired), National Risk Management Research Laboratory, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, United States
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15
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Ledezma-Villanueva A, Adame-Rodríguez JM, O’Connor-Sánchez IA, Villarreal-Chiu JF, Aréchiga-Carvajal ET. Biodegradation kinetic rates of diesel-contaminated sandy soil samples by two different microbial consortia. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1096-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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16
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Brukner I, Longtin Y, Oughton M, Forgetta V, Dascal A. Assay for estimating total bacterial load: relative qPCR normalisation of bacterial load with associated clinical implications. Diagn Microbiol Infect Dis 2015; 83:1-6. [PMID: 26008123 DOI: 10.1016/j.diagmicrobio.2015.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 04/03/2015] [Accepted: 04/20/2015] [Indexed: 12/26/2022]
Abstract
Relative microorganism abundance is a parameter describing biodiversity, referring to how common a bacterial species is within the total bacterial flora. Anal, rectal, skin, mucal, and respiratory swabs are typical clinical samples where knowledge of relative bacterial abundance might make distinction between asymptomatic carriers and symptomatic cases. Assays trying to measure total bacterial load are usually based on the amplification of universal segments of 16S rRNA genes. Previous assays were not adoptable to "direct" PCR protocols, and/or they were not compatible with hydrolysis-based detection. Using the latest summary of universal 16S sequence motifs present in literature and testing our design with 500 liquid and 50 formed stool samples, we illustrate the performance characteristics of a new 16S quantitative PCR (qPCR) assay, which addresses well-known technical problems, including a) positive priming reaction in the absence of intended target due to self-priming and/or mispriming of unintended targets; b) amplification bias due to nonoptimal primer/probe coverage; and c) too large amplicons for clinical qPCR. Stool swabs ranked into bins of different bacterial loads show significant correlation with threshold cycle values of our new assay. To the best of our knowledge, this is the first description of qPCR assay measuring individual differences of total bacterial load present in human stool.
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Affiliation(s)
- Ivan Brukner
- Medical Faculty, McGill University, Montreal, Quebec, Canada; SMBD-Jewish General Hospital, Montreal, Quebec, Canada.
| | - Yves Longtin
- Medical Faculty, McGill University, Montreal, Quebec, Canada; SMBD-Jewish General Hospital, Montreal, Quebec, Canada
| | - Matthew Oughton
- Medical Faculty, McGill University, Montreal, Quebec, Canada; SMBD-Jewish General Hospital, Montreal, Quebec, Canada
| | | | - Andre Dascal
- Medical Faculty, McGill University, Montreal, Quebec, Canada; SMBD-Jewish General Hospital, Montreal, Quebec, Canada
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17
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Lin J, Kang H, Liang J, Fu J, Yu Q, Yang Q. CpG oligonucleotides and Astragalus polysaccharides are effective adjuvants in cultures of avian bone-marrow-derived dendritic cells. Br Poult Sci 2015; 56:30-8. [PMID: 25403700 DOI: 10.1080/00071668.2014.981146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
1. The potential use of CpG oligodeoxynucleotides and/or Astragalus polysaccharide (APS) as adjuvants for the culture of chicken bone-marrow-derived dendritic cells (chBM-DCs) was investigated. 2. Chicken dendritic cells (DCs) were isolated and cultured in the presence of recombinant chicken granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin (IL)-4. The chBM-DC displayed typical DC morphology and expressed DC surface markers (MHC-II and CD11c). 3. Cultured chBM-DC showed effective T-cell activation in vitro, based on a mixed lymphocyte response (MLR). Flow cytometry analysis showed an increased proportion of cells expressing CD40 and CD80 in the APS-stimulated culture, compared to the control culture. In the MLR, the APS- and CpG-stimulated chBM-DC could activate T-cells more than control chBM-DC. Real-time PCR assays showed that CpG can activate the TLR21 and an inflammatory response, while APS just reduced the expression of IRF-3. 4. The results demonstrated that in vitro the adjuvant CpG can stimulate chBM-DC to mature by activation of the TLR-signalling pathway, whereas the adjuvant APS stimulates maturation of chBM-DC in vitro to a lesser degree and by another mechanism.
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Affiliation(s)
- J Lin
- a Key Lab of Animal Physiology and Biochemistry , Nanjing Agricultural University , Nanjing , Jiangsu , PR China
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18
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Lin J, Yin YY, Qin T, Zhu LQ, Yu QH, Yang Q. Enhanced immune response of BMDCs pulsed with H9N2 AIV and CpG. Vaccine 2014; 32:6783-90. [PMID: 25454862 DOI: 10.1016/j.vaccine.2014.10.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/02/2014] [Accepted: 10/03/2014] [Indexed: 12/25/2022]
Abstract
Dendritic cells (DCs), professional antigen presenting cells, have demonstrated effective in controlling the initial of innate immune, while CpG could improve the performance of immune system. To explore the mechanism of CpG enhancing the immune response, we compared different stimulated mouse DCs with systemic approach microarrays. Analysis revealed 1840 differentially expressed genes in H9N2 stimulated group, more than 1728 altered genes in inactive H9N2 group. Investigation also proved that CpG/inactive H9N2 co-stimulation changed 2140 genes, more than that in H9N2 group, strongly demonstrated that CpG improved the performance of inactive H9N2 vaccination. Pathways analysis founded that DCs response rapid to shift in their maturation state, which involved Toll-like receptor (TLR) pathway significantly. Microarrays results were also verified by qRT-PCR with 14 elected representative genes. Further analysis proved that co-stimulatory molecules (CD40, CD80, CD86 and MHC-II), regulatory protein (IRF-7 and TRAF-6) and pro-inflammatory cytokines (IL-1, IL-6 and IL-12) were all changed and involved in DCs maturation. At last we demonstrated TLR signalling pathway in chicken bone marrow-derived dendritic cells (chBM-DCs) stimulated with CpG. The distinct transcriptional profiles of DCs pulsed with various stimuli expanded our understanding of how DCs respond and recognize influenza.
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Affiliation(s)
- Jian Lin
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, China; Nanjing Agricultural University, Wei gang 1, Jiangsu, PR China
| | - Yin Y Yin
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, China; Nanjing Agricultural University, Wei gang 1, Jiangsu, PR China
| | - Tao Qin
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, China; Nanjing Agricultural University, Wei gang 1, Jiangsu, PR China
| | - Li Q Zhu
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, China; Nanjing Agricultural University, Wei gang 1, Jiangsu, PR China
| | - Qing H Yu
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, China; Nanjing Agricultural University, Wei gang 1, Jiangsu, PR China
| | - Qian Yang
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, China.
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Colla TS, Andreazza R, Bücker F, de Souza MM, Tramontini L, Prado GR, Frazzon APG, Camargo FADO, Bento FM. Bioremediation assessment of diesel-biodiesel-contaminated soil using an alternative bioaugmentation strategy. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:2592-2602. [PMID: 24091525 DOI: 10.1007/s11356-013-2139-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 09/06/2013] [Indexed: 06/02/2023]
Abstract
This study investigated the effectiveness of successive bioaugmentation, conventional bioaugmentation, and biostimulation of biodegradation of B10 in soil. In addition, the structure of the soil microbial community was assessed by polymerase chain reaction-denaturing gradient gel electrophoresis. The consortium was inoculated on the initial and the 11th day of incubation for successive bioaugmentation and only on the initial day for bioaugmentation and conventional bioaugmentation. The experiment was conducted for 32 days. The microbial consortium was identified based on sequencing of 16S rRNA gene and consisted as Pseudomonas aeruginosa, Achromobacter xylosoxidans, and Ochrobactrum intermedium. Nutrient introduction (biostimulation) promoted a positive effect on microbial populations. The results indicate that the edaphic community structure and dynamics were different according to the treatments employed. CO2 evolution demonstrated no significant difference in soil microbial activity between biostimulation and bioaugmentation treatments. The total petroleum hydrocarbon (TPH) analysis indicated a biodegradation level of 35.7 and 32.2 % for the biostimulation and successive bioaugmentation treatments, respectively. Successive bioaugmentation displayed positive effects on biodegradation, with a substantial reduction in TPH levels.
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Affiliation(s)
- Tatiana Simonetto Colla
- Department of Microbiology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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20
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Markiewicz B, Sznajdrowska A, Chrzanowski Ł, Ławniczak Ł, Zgoła-Grześkowiak A, Kubiak K, Nawrot J, Pernak J. Ionic liquids with a theophyllinate anion. NEW J CHEM 2014. [DOI: 10.1039/c4nj00463a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel group of theophylline-based ionic liquids displayed efficient antifeedant, fungicidal and bactericidal activities, proving to be promising for potential applications.
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Affiliation(s)
- Bartosz Markiewicz
- Faculty of Chemical Technology
- Poznan University of Technology
- 60-965 Poznan, Poland
| | - Agata Sznajdrowska
- Faculty of Chemical Technology
- Poznan University of Technology
- 60-965 Poznan, Poland
| | - Łukasz Chrzanowski
- Faculty of Chemical Technology
- Poznan University of Technology
- 60-965 Poznan, Poland
| | - Łukasz Ławniczak
- Faculty of Chemical Technology
- Poznan University of Technology
- 60-965 Poznan, Poland
| | | | - Krzysztof Kubiak
- Institute of Plant Protection
- National Research Institute
- Poznan 60-318, Poland
| | - Jan Nawrot
- Institute of Plant Protection
- National Research Institute
- Poznan 60-318, Poland
| | - Juliusz Pernak
- Faculty of Chemical Technology
- Poznan University of Technology
- 60-965 Poznan, Poland
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21
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Restrepo-Flórez JM, Bassi A, Rehmann L, Thompson MR. Effect of biodiesel addition on microbial community structure in a simulated fuel storage system. BIORESOURCE TECHNOLOGY 2013; 147:456-463. [PMID: 24012735 DOI: 10.1016/j.biortech.2013.08.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/08/2013] [Accepted: 08/10/2013] [Indexed: 06/02/2023]
Abstract
Understanding changes in microbial structure due to biodiesel storage is important both for protecting integrity of storage systems and fuel quality management. In this work a simulated storage system was used to study the effect of biodiesel (0%, 25%, 50%, 75% and 100%) on a microbial population, which was followed by community level physiological profiling (CLPP), 16s rDNA analysis and plating in selective media. Results proved that structure and functionality were affected by biodiesel. CLPP showed at least three populations: one corresponding to diesel, one to biodiesel and one to blends of diesel and biodiesel. Analysis of 16s rDNA revealed that microbial composition was different for populations growing in diesel and biodiesel. Genera identified are known for degradation of hydrocarbons and emulsifier production. Maximum growth was obtained in biodiesel; however, microbial counts in standard media were lower for this samples. Acidification of culture media was observed at high biodiesel concentration.
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Affiliation(s)
- Juan-Manuel Restrepo-Flórez
- Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Amarjeet Bassi
- Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 3K7, Canada.
| | - Lars Rehmann
- Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Michael R Thompson
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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22
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Wyrwas B, Dymaczewski Z, Zgoła-Grześkowiak A, Szymański A, Frańska M, Kruszelnicka I, Ginter-Kramarczyk D, Cyplik P, Ławniczak Ł, Chrzanowski Ł. Biodegradation of Triton X-100 and its primary metabolites by a bacterial community isolated from activated sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2013; 128:292-299. [PMID: 23770380 DOI: 10.1016/j.jenvman.2013.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 04/26/2013] [Accepted: 05/06/2013] [Indexed: 06/02/2023]
Abstract
A set of studies was carried using a continuous flow biodegradation unit in order to isolate a microbial community capable of efficient and complete utilization of octylphenol ethoxylates from activated sludge. Increasing concentrations of Triton X-100 (in the range of 1-1000 mg/l) were applied over a time period of 35 days in order to select microorganisms, which exhibit high tolerance towards this surfactant. The fate of the surfactant and its primary degradation products was assessed by HPLC/MS. It was observed that even small doses of the surfactant contributed to the disruption of the activated sludge, due to adsorption of primary Triton X-100 metabolites (octylphenol and short-chained ethoxylates) on the cells, although the long-chain octylphenol ethoxylates were efficiently degraded during the isolation process. The toxicity assessment of octylphenol as well as octylphenol di- and monoethoxylates towards activated sludge allowed for determination of EC50 values (8 and 55 mg/l, respectively). The identification of the residual microorganisms revealed the presence of Acinetobacter junii, Acinetobacter calcoaceticus, Aeromonas hydrophilia, Alcaligenes spp., Pseudomonas fluorescens and Sphingomonas capsulata. The isolated community exhibited a high resistance towards Triton X-100 and was capable of growth even at 10,000 mg/l, with the highest specific growth rate (0.47 h(-1)) observed at 4000 mg/l. Under aerobic conditions both octylphenol and the short-chained ethoxylates were completely degraded while no toxic effect towards the isolated bacterial community was observed.
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Affiliation(s)
- Bogdan Wyrwas
- Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
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23
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Cyplik P, Piotrowska-Cyplik A, Marecik R, Czarny J, Drozdzyńska A, Chrzanowski Ł. Biological denitrification of brine: the effect of compatible solutes on enzyme activities and fatty acid degradation. Biodegradation 2012; 23:663-72. [PMID: 22286267 PMCID: PMC3411302 DOI: 10.1007/s10532-012-9542-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Accepted: 01/20/2012] [Indexed: 11/02/2022]
Abstract
The effect of the addition of compatible solutes (ectoine and trehalose) on the denitrification process of saline wastewater was studied. In saline wastewater, it was observed that the initial concentration of nitrates was 500 mg N l⁻¹. A fatty substance isolated from oiled bleaching earth (waste of vegetable oil refining process) was used as a source of carbon.The consortium, which was responsible for the denitrification process originated from the wastewater of the vegetable oil industry. The consortium of microorganisms was identified by the use of restriction fragment length polymorphism of 16S rRNA gene amplicons and sequencing techniques. It was noted that ectoine affects significantly the activity of lipase and nitrate reductase, and resulted in faster denitrification compared to saline wastewater with the addition of trehalose or control saline wastewater (without compatible solutes). It was observed that relative enzyme activities of lipase and nitrate reductase increased by 32 and 35%, respectively, in the presence of 1 mM ectoine. This resulted in an increase in specific nitrate reduction rate in the presence of 1 mM ectoine to 5.7 mg N g⁻¹ VSS h⁻¹, which was higher than in the absence of ectoine (3.2 mg N g⁻¹ VSS h⁻¹). The addition of trehalose did not have an effect on nitrate removals. Moreover, it was found that trehalose was used up completely by bacteria as a source of carbon in the denitrification process. The fatty acids were biodegraded by 74% in the presence of 1 mM ectoine.
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Affiliation(s)
- Paweł Cyplik
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences, Wojska Polskiego 48, 60-627 Poznań, Poland.
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Interspecific interactions in mixed microbial cultures in a biodegradation perspective. Appl Microbiol Biotechnol 2012; 95:861-70. [PMID: 22733114 DOI: 10.1007/s00253-012-4234-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 06/05/2012] [Accepted: 06/07/2012] [Indexed: 01/08/2023]
Abstract
In recent works, microbial consortia consisting of various bacteria and fungi exhibited a biodegradation performance superior to single microbial strains. A highly efficient biodegradation of synthetic dyes, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and other organic pollutants can be achieved by mixed microbial cultures that combine degradative enzyme activities inherent to individual consortium members. This review summarizes biodegradation results obtained with defined microbial cocultures and real microbial consortia. The necessity of using a proper strategy for the microbial consortium development and optimization was clearly demonstrated. Molecular genetic and proteomic techniques have revolutionized the study of microbial communities, and techniques such as the denaturing gradient gel electrophoresis, rRNA sequencing, and metaproteomics have been used to identify consortium members and to study microbial population dynamics. These analyses could help to further enhance and optimize the natural activities of mixed microbial cultures.
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Cyplik P, Marecik R, Piotrowska-Cyplik A, Olejnik A, Drożdżyńska A, Chrzanowski Ł. Biological Denitrification of High Nitrate Processing Wastewaters from Explosives Production Plant. WATER, AIR, AND SOIL POLLUTION 2012; 223:1791-1800. [PMID: 22593607 PMCID: PMC3332387 DOI: 10.1007/s11270-011-0984-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Accepted: 09/28/2011] [Indexed: 05/26/2023]
Abstract
Wastewater samples originating from an explosives production plant (3,000 mg N l(-1) nitrate, 4.8 mg l(-1) nitroglycerin, 1.9 mg l(-1) nitroglycol and 1,200 mg l(-1) chemical oxygen demand) were subjected to biological purification. An attempt to completely remove nitrate and to decrease the chemical oxygen demand was carried out under anaerobic conditions. A soil isolated microbial consortium capable of biodegrading various organic compounds and reduce nitrate to atmospheric nitrogen under anaerobic conditions was used. Complete removal of nitrates with simultaneous elimination of nitroglycerin and ethylene glycol dinitrate (nitroglycol) was achieved as a result of the conducted research. Specific nitrate reduction rate was estimated at 12.3 mg N g(-1) VSS h(-1). Toxicity of wastewater samples during the denitrification process was studied by measuring the activity of dehydrogenases in the activated sludge. Mutagenicity was determined by employing the Ames test. The maximum mutagenic activity did not exceed 0.5. The obtained results suggest that the studied wastewater samples did not exhibit mutagenic properties.
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Affiliation(s)
- Paweł Cyplik
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences, Wojska Polskiego 48, 60-627 Poznań, Poland
| | - Roman Marecik
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences, Wojska Polskiego 48, 60-627 Poznań, Poland
| | - Agnieszka Piotrowska-Cyplik
- Institute of Food Technology of Plant Origin, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland
| | - Anna Olejnik
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences, Wojska Polskiego 48, 60-627 Poznań, Poland
| | - Agnieszka Drożdżyńska
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences, Wojska Polskiego 48, 60-627 Poznań, Poland
| | - Łukasz Chrzanowski
- Institute of Chemical Technology and Engineering, Poznań University of Technology, Pl. M. Skłodowskiej-Curie 2, 60-965 Poznań, Poland
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Chrzanowski Ł, Dziadas M, Ławniczak Ł, Cyplik P, Białas W, Szulc A, Lisiecki P, Jeleń H. Biodegradation of rhamnolipids in liquid cultures: effect of biosurfactant dissipation on diesel fuel/B20 blend biodegradation efficiency and bacterial community composition. BIORESOURCE TECHNOLOGY 2012; 111:328-335. [PMID: 22366606 DOI: 10.1016/j.biortech.2012.01.181] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 01/30/2012] [Accepted: 01/31/2012] [Indexed: 05/31/2023]
Abstract
Bacterial utilization of rhamnolipids during biosurfactant-supplemented biodegradation of diesel and B20 (20% biodiesel and 80% diesel v/v) fuels was evaluated under conditions with full aeration or with nitrate and nitrite as electron acceptors. Rhamnolipid-induced changes in community dynamics were assessed by employing real-time PCR and the ddCt method for relative quantification. The experiments with rhamnolipids at 150 mg/l, approx. double critical micelle concentration (CMC) and diesel oil confirmed that rhamnolipids were readily degraded by a soil-isolated consortium of hydrocarbon degraders in all samples, under both aerobic and nitrate-reducing conditions. The presence of rhamnolipids increased the dissipation rates for B20 constituents under aerobic conditions, but did not influence the biodegradation rate of pure diesel. No effect was observed under nitrate-reducing conditions. The biodegradation of rhamnolipids did not favor the growth of any specific consortium member, which proved that the employed biosurfactant did not interfere with the microbial equilibrium during diesel/biodiesel biodegradation.
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Affiliation(s)
- Łukasz Chrzanowski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Pl. M. Skłodowskiej-Curie 2, 60-965 Poznań, Poland.
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27
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Wyrwas B, Chrzanowski Ł, Ławniczak Ł, Szulc A, Cyplik P, Białas W, Szymański A, Hołderna-Odachowska A. Utilization of Triton X-100 and polyethylene glycols during surfactant-mediated biodegradation of diesel fuel. JOURNAL OF HAZARDOUS MATERIALS 2011; 197:97-103. [PMID: 21996621 DOI: 10.1016/j.jhazmat.2011.09.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 09/14/2011] [Accepted: 09/15/2011] [Indexed: 05/28/2023]
Abstract
The hypothesis regarding preferential biodegradation of surfactants applied for enhancement of microbial hydrocarbons degradation was studied. At first the microbial degradation of sole Triton X-100 by soil isolated hydrocarbon degrading bacterial consortium was confirmed under both full and limited aeration with nitrate as an electron acceptor. Triton X-100 (600 mg/l) was utilized twice as fast for aerobic conditions (t(1/2)=10.3h), compared to anaerobic conditions (t(1/2)=21.8h). HPLC/ESI-MS analysis revealed the preferential biodegradation trends in both components classes of commercial Triton X-100 (alkylphenol ethoxylates) as well as polyethylene glycols. The obtained results suggest that the observed changes in the degree of ethoxylation for polyethylene glycol homologues occurred as a consequence of the 'central fission' mechanism during Triton X-100 biodegradation. Subsequent experiments with Triton X-100 at approx. CMC concentration (150 mg/l) and diesel oil supported our initial hypothesis that the surfactant would become the preferred carbon source even for hydrocarbon degrading bacteria. Regardless of aeration regimes Triton X-100 was utilized within 48-72 h. Efficiency of diesel oil degradation was decreased in the presence of surfactant for aerobic conditions by approx. 25% reaching 60 instead of 80% noted for experiments without surfactant. No surfactant influence was observed for anaerobic conditions.
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Affiliation(s)
- Bogdan Wyrwas
- Institute of Chemistry, Poznan University of Technology, Poznań, Poland
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