1
|
Yessentayeva K, Reinhard A, Berzhanova R, Mukasheva T, Urich T, Mikolasch A. Bacterial crude oil and polyaromatic hydrocarbon degraders from Kazakh oil fields as barley growth support. Appl Microbiol Biotechnol 2024; 108:189. [PMID: 38305872 PMCID: PMC10837267 DOI: 10.1007/s00253-024-13010-y] [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: 10/27/2023] [Revised: 12/21/2023] [Accepted: 01/11/2024] [Indexed: 02/03/2024]
Abstract
Bacterial strains of the genera Arthrobacter, Bacillus, Dietzia, Kocuria, and Micrococcus were isolated from oil-contaminated soils of the Balgimbaev, Dossor, and Zaburunye oil fields in Kazakhstan. They were selected from 1376 isolated strains based on their unique ability to use crude oil and polyaromatic hydrocarbons (PAHs) as sole source of carbon and energy in growth experiments. The isolated strains degraded a wide range of aliphatic and aromatic components from crude oil to generate a total of 170 acid metabolites. Eight metabolites were detected during the degradation of anthracene and of phenanthrene, two of which led to the description of a new degradation pathway. The selected bacterial strains Arthrobacter bussei/agilis SBUG 2290, Bacillus atrophaeus SBUG 2291, Bacillus subtilis SBUG 2285, Dietzia kunjamensis SBUG 2289, Kocuria rosea SBUG 2287, Kocuria polaris SBUG 2288, and Micrococcus luteus SBUG 2286 promoted the growth of barley shoots and roots in oil-contaminated soil, demonstrating the enormous potential of isolatable and cultivable soil bacteria in soil remediation. KEY POINTS: • Special powerful bacterial strains as potential crude oil and PAH degraders. • Growth on crude oil or PAHs as sole source of carbon and energy. • Bacterial support of barley growth as resource for soil remediation.
Collapse
Affiliation(s)
- Kuralay Yessentayeva
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi Ave 71, 050040, Almaty, Kazakhstan
| | - Anne Reinhard
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17487, Greifswald, Germany
| | - Ramza Berzhanova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi Ave 71, 050040, Almaty, Kazakhstan
| | - Togzhan Mukasheva
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi Ave 71, 050040, Almaty, Kazakhstan
| | - Tim Urich
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17487, Greifswald, Germany
| | - Annett Mikolasch
- Institute of Microbiology, University Greifswald, Felix-Hausdorff-Straße 8, 17487, Greifswald, Germany.
| |
Collapse
|
2
|
Tao L, Chiarelli MP, Pavlova S, Kolokythas A, Schwartz J, DeFrancesco J, Salameh B, Green SJ, Adami G. Enrichment of polycyclic aromatic hydrocarbon metabolizing microorganisms on the oral mucosa of tobacco users. PeerJ 2024; 12:e16626. [PMID: 38188172 PMCID: PMC10771095 DOI: 10.7717/peerj.16626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/16/2023] [Indexed: 01/09/2024] Open
Abstract
Certain soil microbes resist and metabolize polycyclic aromatic hydrocarbons (PAHs). The same is true for a subset of skin microbes. In the human mouth, oral microbes have the potential to oxidize tobacco PAHs, thereby increasing these chemicals' ability to cause cancer of adjacent epithelium. We hypothesized that we could identify, in smokers, the oral mucosal microbes that can metabolize PAH. We isolated bacteria and fungi that survived long-term in minimal media with PAHs as the sole carbon source, under aerobic conditions, from the oral mucosa in 17 of 26 smokers and two of 14 nonsmokers. Of bacteria genera that survived harsh PAH exposure in vitro, most were found at trace levels, except for Staphylococcus, Actinomyces, and Kingella, which were more abundant. Two PAH-resistant strains of Candida albicans (C. albicans) were isolated from smokers. C. albicans was a prime candidate to contribute to carcinogenesis in tobacco users as it is found orally at high levels in tobacco users on the mucosa, and some Candida species can metabolize PAHs. However, when C. albicans isolates were tested for metabolism of two model PAH substrates, pyrene and phenanthrene, they were not capable, suggesting they cannot metabolize PAH under the conditions used. In conclusion, evidence for large scale microbial degradation of tobacco PAHs under aerobic conditions on the oral mucosa remains lacking, though nonabundant PAH metabolizers are certainly present.
Collapse
Affiliation(s)
- Lin Tao
- Department of Oral Biology, College of Dentistry, University of Illinois Chicago, Chicago, IL, United States of America
| | - M Paul Chiarelli
- Department of Chemistry and Biochemistry, Loyola University of Chicago, Chicago, IL, United States of America
| | - Sylvia Pavlova
- Department of Oral Biology, College of Dentistry, University of Illinois Chicago, Chicago, IL, United States of America
| | - Antonia Kolokythas
- Department of Oral and Maxillofacial Surgery, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, United States of America
| | - Joel Schwartz
- Oral Medicine and Diagnostic Sciences, University of Illinois Chicago, Chicago, IL, United States of America
| | - James DeFrancesco
- Forensic Science Program — Department of Criminal Justice, Loyola University of Chicago, Chicago, IL, United States of America
| | - Benjamin Salameh
- Oral Medicine and Diagnostic Sciences, University of Illinois Chicago, Chicago, IL, United States of America
| | - Stefan J. Green
- DNA Sequencing Core, Research Resources Center, University of Illinois Chicago, Chicago, IL, United States of America
| | - Guy Adami
- Oral Medicine and Diagnostic Sciences, University of Illinois Chicago, Chicago, IL, United States of America
| |
Collapse
|
3
|
Jain L, Jajoo A. Diminishing toxicity of pyrene on photosynthetic performance of soybean using Bacillus subtilis (NCIM 5594). FUNCTIONAL PLANT BIOLOGY : FPB 2023; 50:206-218. [PMID: 36372780 DOI: 10.1071/fp22172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Polycyclic aromatic hydrocarbons are persistent organic pollutants causing serious environmental problems, being toxic to plants and difficult to remediate. Pyrene is one such extremely dangerous compound that is toxic for the environment. This study suggests the use of Bacillus subtilis (National Collection of Industrial Microorganisms [NCIM] 5594) to overcome inhibitory effects of pyrene on soybean photosynthesis. The toxicity of pyrene to soybean was evident from a significant decrease in seed germination parameters, photosynthetic performance and biomass during growth of soybean in pyrene contaminated soil. Efficiency of performance index, light absorption, trapping and electron transport were reduced in plants grown in pyrene contaminated soil while significant recovery in these parameters was observed in plants grown in pyrene+B. subtilis treated soil. Activity levels of dehydrogenase and lipase enzymes significantly recovered in pyrene+B. subtilis treated soil. After extraction of pyrene from soil and soybean plant, concentration of pyrene was lowered in pyrene+B. subtilis treated soil and plants. These findings suggest efficient degradation of pyrene by B. subtilis . About 70% degradation of pyrene was achieved in soil using B. subtilis ; thus it is a useful strain for crop improvement in pyrene polluted soil.
Collapse
Affiliation(s)
- Lakshmi Jain
- School of Life Science, Devi Ahilya University, Indore 452017, India
| | - Anjana Jajoo
- School of Life Science, Devi Ahilya University, Indore 452017, India; and School of Biotechnology, Devi Ahilya University, Indore 452017, India
| |
Collapse
|
4
|
Al-Zaban MI, AlHarbi MA, Mahmoud MA. Hydrocarbon biodegradation and transcriptome responses of cellulase, peroxidase, and laccase encoding genes inhabiting rhizospheric fungal isolates. Saudi J Biol Sci 2021; 28:2083-2090. [PMID: 33935563 PMCID: PMC8071968 DOI: 10.1016/j.sjbs.2021.01.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/06/2021] [Accepted: 01/06/2021] [Indexed: 01/27/2023] Open
Abstract
By using the indigenous micro-organisms of the polluted environment to be treated, bioremediation can be a successful strategy. PCR and RT-PCR molecular techniques were applied to examine the evolution of fungal isolates through putative genes f ligninolytic enzymes like lignin peroxidase (LiP), laccase (LaC), manganese peroxidase (MnP), and cellulase (Cx) as a response to polluting of the environment by hydrocarbons. In this study, isolation of rhizospheric fungal isolates, molecular identification, crude oil tolerance, and enzyme excretions were demonstrated. From the date palm rhizosphere, 3 fungal isolates were isolated and characterized morphologically and molecularly by ITS ribosomal RNA (rRNA) sequencing. The isolates were identified as Aspergillus flavus AF15, Trichoderma harzianum TH07, and Fusarium solani FS12 through using the BLAST tool in NCBI. All fungal isolates showed high tolerance to crude oil and survived with various responses at the highest concentration (20%). Aspergillus flavus AF15 and Trichoderma harzianum TH07 demonstrated promising oil-degrading tolerance ability based on the dose inhibition response percentage (DIRP) of the fungal isolates. A. flavus had a powerful capacity to production Cx, LaC, LiP and MnP with a range from 83.7 to 96.3 mL. Molecularly, nine genes of the ligninolytic enzymes, cbh (cbhI.1, cbhI.1, cbhII) lcc, lig (1, 2, 4 and 6) and mnp were tested for presence and expression (by PCR and RT-PCR, respectively). PCR showed that all isolates contained all the nine genes examined, regardless of capacity to enzymes production profiles, so the presence responses of nine genes did not correlate with enzymes-production ability. Gene expression analysis shows a more diverse pattern for tested isolates for example, Aspergillus flavus AF15 had over-expression of lig and mnp genes, Fusarium solani FS12 have a weak signal with lcc gene while, Trichoderma harzianum TH07 showed moderate expression of mnp and lcc genes. The power of the transcription of the gene leads to increased enzyme secretion by fungal isolates. Fungi are important microorganisms in the clean-up of petroleum pollution. They have bioremediation highly potency that is related to their diverse production of these catalytic enzymes.
Collapse
Affiliation(s)
- Mayasar I. Al-Zaban
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Maha A. AlHarbi
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Mohamed A. Mahmoud
- Molecular Markers Laboratory, Plant Pathology Research Institute, Agricultural Research Center, Giza 12619, Egypt
| |
Collapse
|
5
|
de la Cruz-Izquierdo RI, Paz-González AD, Reyes-Espinosa F, Vazquez-Jimenez LK, Salinas-Sandoval M, González-Domínguez MI, Rivera G. Analysis of phenanthrene degradation by Ascomycota fungi isolated from contaminated soil from Reynosa, Mexico. Lett Appl Microbiol 2021; 72:542-555. [PMID: 33423286 DOI: 10.1111/lam.13451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 01/05/2021] [Accepted: 01/07/2021] [Indexed: 02/06/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds generated mainly by anthropogenic sources. They are considered toxic to mammals, since they have carcinogenic, mutagenic and genotoxic properties, among others. Although mycoremediation is an efficient, economical and eco-friendly technique for degrading PAHs, the fungal degradation potential of the phylum Ascomycota has not been widely studied. In this work, we evaluated different fungal strains from the polluted soil of 'La Escondida' lagoon in Reynosa, Mexico to know their potential to degrade phenanthrene (PHE). Forty-three soil isolates with the capacity to grow in the presence of PHE (0·1% w/v) were obtained. The fungi Aspergillus oryzae MF13 and Aspergillus flavipes QCS12 had the best potential to degrade PHE. Both fungi germinated and grew at PHE concentrations of up to 5000 mg l-1 and degraded 235 mg l-1 of PHE in 28 days, with and without an additional carbon source. These characteristics indicate that A. oryzae MF13 and A. flavipes QCS12 could be promising organisms for the remediation of sites contaminated with PAHs and detoxification of recalcitrant xenobiotics.
Collapse
Affiliation(s)
- R I de la Cruz-Izquierdo
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Mexico
| | - A D Paz-González
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Mexico
| | - F Reyes-Espinosa
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Mexico.,Tecnológico Nacional de México, ITS de Comalcalco, División de Ingeniería Ambiental, Tabasco, Mexico
| | - L K Vazquez-Jimenez
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Mexico
| | - M Salinas-Sandoval
- Laboratorios de Ingeniería en Nanotecnología, Universidad de La Ciénega del Estado de Michoacán de Ocampo, Sahuayo, Mexico
| | - M I González-Domínguez
- Laboratorios de Ingeniería en Nanotecnología, Universidad de La Ciénega del Estado de Michoacán de Ocampo, Sahuayo, Mexico
| | - G Rivera
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Mexico
| |
Collapse
|
6
|
Jain L, Jajoo A. Protection of PSI and PSII complexes of wheat from toxic effect of anthracene by Bacillus subtilis (NCIM 5594). PHOTOSYNTHESIS RESEARCH 2020; 146:197-211. [PMID: 31755008 DOI: 10.1007/s11120-019-00692-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Contamination of polycyclic aromatic hydrocarbons (PAHs) in environment indicates a serious problem to the present era. These are carcinogenic and mutagenic compounds and pose a potential risk to photosynthetic organisms. The present study illustrates the protection of Photosystem I and Photosystem II complexes of wheat plant by Bacillus subtilis (NCIM 5594) from toxic effects of anthracene (ANT). Initially, Chl a fluorescence induction curve measurement revealed declined J-I and I-P phase in ANT-treated plants. Efficiency of light absorption, trapping, and electron transport was reduced in ANT-treated plants, while in ANT + Bacillus subtilis (NCIM 5594)-treated plants value of these parameters was restored. Effect of ANT and ANT + Bacillus subtilis (NCIM 5594) on energy conversion of Photosystem I and Photosystem II was measured. Quantum yield of Photosystem I (YI) and Photosystem II (YII) was decreased in the presence of ANT, while these values were recovered in ANT + Bacillus subtilis (NCIM 5594)-treated plants. Reduction in Y(II) was associated with an increase in non-regulated energy dissipation NO. Likewise the reduction of Y(I) was induced due to donor-side and acceptor-side limitation of Photosystem I caused by toxic effect of ANT. Toxic effects of ANT on electron transport rate (ETRI and ETRII) were found to be reduced in ANT + Bacillus subtilis (NCIM 5594)-treated plants. Activation of Cyclic electron flow around Photosystem I in ANT-treated plants was recovered by bacteria. It was concluded that toxic effect of ANT on Photosystem I and Photosystem II complexes was recovered by Bacillus subtilis (NCIM 5594) strain, and thus it is useful strain for crop improvement in ANT-polluted soil.
Collapse
Affiliation(s)
- Lakshmi Jain
- School of Life Science, Devi Ahilya University, Indore, 452017, India
| | - Anjana Jajoo
- School of Life Science, Devi Ahilya University, Indore, 452017, India.
| |
Collapse
|
7
|
Shen X, Zhang J, Xie H, Hu Z, Liang S, Ngo HH, Guo W, Chen X, Fan J, Zhao C. Intensive removal of PAHs in constructed wetland filled with copper biochar. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111028. [PMID: 32829206 DOI: 10.1016/j.ecoenv.2020.111028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/08/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
In this study, biochar-loading copper ions (Cu-BC), a novel composite for removing phenanthrene very efficiently from water, was prepared using the impregnation method. The performance of constructed wetlands (CWs) with these modified and original biochar as substrates was analyzed. CW with Cu-BC removed a large amount of phenanthrene (94.09 ± 3.02%). According to the surface characteristics analysis, Cu-BC can promote the removal of pollutants via complex absorption, hydrophobic adsorption, increasing the Lewis Pair and electrostatic attraction. Furthermore the higher nitrate removal rate in the treated system (91.11 ± 1.17%) was observed to have higher levels of bacterial metabolic diversity and denitrifier types. The phenanthrene accumulated in plants with this treatment system was enhanced by the role of copper in photosynthesis. It is able to boost the plant extraction of organic matter.
Collapse
Affiliation(s)
- Xiaotong Shen
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, China.
| | - Huijun Xie
- Environment Research Institute, Shandong University, Jinan, 250100, China
| | - Zhen Hu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, China
| | - Shuang Liang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, China
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Wenshan Guo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Xinhan Chen
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, China
| | - Jinlin Fan
- Department of Science and Technology Management, Shandong University, Jinan, 250100, PR China
| | - Congcong Zhao
- College of Geography and Environment, Shandong Normal University, Jinan, 250014, China
| |
Collapse
|
8
|
Kuttiyathil MS, Mohamed MM, Al-Zuhair S. Using microalgae for remediation of crude petroleum oil-water emulsions. Biotechnol Prog 2020; 37:e3098. [PMID: 33169531 DOI: 10.1002/btpr.3098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/21/2020] [Accepted: 11/04/2020] [Indexed: 12/28/2022]
Abstract
Crude petroleum oil spills are among the most important organic contaminations. While the separated oils accumulated on the surface water are relatively easily removed, the emulsified portions are more difficult to remove and pose significant threats to the environment. Bioremediation using bacteria has proven to be an effective method, but the biomass produced in this case does not have any significant remunerative value. In this work, microalgae were proposed to combine emulsified oil remediation process with the potential of microalgae as a biofuel feedstock, thus enhancing the economic and environmental benefits of the process. A freshwater strain of Chlorella vulgaris was grown in water containing different concentrations of emulsified crude oil at different temperatures. The specific growth rate (μmax ) of the microalgae for each initial oil concentration was determined and was found to increase with the increase in initial oil concentration. For example, at 30°C, the specific growth rate, μ increased from 0.477 to 0.784 per day as the oil concentration increased from 57 to 222 mg/L. At 30°C, the effect of substrate concentration agreed with that of the microalgae growth, whereas at 40°C, the drop in oil concentration decreased with the increase in concentration. The results were fitted to a modified Monod kinetics model that used specific interfacial area as the influential substrate instead of the actual concentration. The results of this study clearly show the potential of using microalgae for emulsified oil remediation at relatively high concentrations.
Collapse
Affiliation(s)
| | - Mohamed M Mohamed
- Civil and Environmental Engineering Department, UAE University, Al-Ain, United Arab Emirates
| | - Sulaiman Al-Zuhair
- Chemical and Petroleum Engineering Department, UAE University, Al-Ain, United Arab Emirates
| |
Collapse
|
9
|
Wolf DC, Cryder Z, Gan J. Soil bacterial community dynamics following surfactant addition and bioaugmentation in pyrene-contaminated soils. CHEMOSPHERE 2019; 231:93-102. [PMID: 31128356 DOI: 10.1016/j.chemosphere.2019.05.145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Because of their toxic properties, polycyclic aromatic hydrocarbons (PAHs) are designated as priority pollutants. The low solubility and strong sorption of PAHs in soil often limits bioremediation. To increase PAH bioavailability and enhance microbial degradation, surfactants are often added to contaminated soils. However, the effects of surfactants on the PAH degradation capacities of soil microbes are generally neglected. In this study, 16S rRNA gene high-throughput sequencing was used to evaluate changes in the soil microbial community after the application of rhamnolipid biosurfactant or Brij-35 surfactant and Mycobacterium vanbaalenii PYR-1 bioaugmentation over a 50-d mineralization study in two soils contaminated with pyrene at 10 mg kg-1. The introduction of pyrene in both soils resulted in an increase in Firmicutes and a decrease in microbial richness and Shannon diversity index. Amendment of rhamnolipid at 1,400 μg g-1 to the native clay soil resulted in a decrease in Bacillus from 48% to 2%, which was accompanied with an increase in Mycoplana that accounted for 67% of the total genera relative abundance. Phylogenetic investigation of communities by reconstruction of unobserved states was used to predict the activity of functional genes involved in the PAH degradation KEGG pathway and determined that M. vanbaalenii PYR-1 bioaugmentation resulted in an increased number of functional genes utilized in PAH biodegradation. Results of this study provide a better understanding of the soil microbial dynamics in response to surfactant amendments in addition to bioaugmentation of a PAH-degrading microbe. This knowledge contributes to successful and efficient surfactant-enhanced bioremediation of PAH-contaminated soils.
Collapse
Affiliation(s)
- D C Wolf
- Department of Environmental Sciences, University of California, Riverside, Riverside, CA 92521, USA.
| | - Z Cryder
- Department of Environmental Sciences, University of California, Riverside, Riverside, CA 92521, USA
| | - J Gan
- Department of Environmental Sciences, University of California, Riverside, Riverside, CA 92521, USA
| |
Collapse
|
10
|
Ntaikou I, Koumelis I, Kamilari M, Iatridi Z, Tsitsilianis C, Lyberatos G. Effect of nitrogen limitation on polyhydroxyalkanoates production efficiency, properties and microbial dynamics using a soil-derived mixed continuous culture. INTERNATIONAL JOURNAL OF BIOBASED PLASTICS 2019. [DOI: 10.1080/24759651.2019.1648016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ioanna Ntaikou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (ICEHT/FORTH), Patras, Greece
| | - Ioannis Koumelis
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (ICEHT/FORTH), Patras, Greece
- Department of Chemical Engineering, University of Patras, Patras, Greece
| | - Maria Kamilari
- Department of Biology, University of Patras, Patras, Greece
- Department of Biology, Section of Ecology and Evolution, University of Copenhagen, Copenhagen, Denmark
| | - Zacharoula Iatridi
- Department of Chemical Engineering, University of Patras, Patras, Greece
| | | | - Gerasimos Lyberatos
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (ICEHT/FORTH), Patras, Greece
- School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| |
Collapse
|
11
|
Uad I, Silva-Castro GA, Abrusci C, Catalina F, González-López J, Manzanera M, Calvo C. Production index: A new index to evaluate EPSs as surfactants and bioemulsifiers applied to Halomonas variabilis strain W10 for hydrocarbon bioremediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 175:66-73. [PMID: 30889401 DOI: 10.1016/j.ecoenv.2019.03.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 02/11/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Affiliation(s)
- Imane Uad
- Department of Microbiology, Institute of Water Research, University of Granada, C/ Ramón y Cajal No. 4, 18071, Granada, Spain; Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud (PTS), Granada, Spain
| | - Gloria Andrea Silva-Castro
- Department of Microbiology, Institute of Water Research, University of Granada, C/ Ramón y Cajal No. 4, 18071, Granada, Spain
| | - Concepción Abrusci
- Department of Molecular Biology, Faculty of Science, Autonomous University of Madrid-UAM, Cantoblanco, 28049, Madrid, Spain
| | - Fernando Catalina
- Department of Applied Macromolecular Chemistry, Institute of Polymer Science and Technology, CSIC, C/ Juan de la Cierva, No. 3, 28006, Madrid, Spain
| | - Jesús González-López
- Department of Microbiology, Institute of Water Research, University of Granada, C/ Ramón y Cajal No. 4, 18071, Granada, Spain
| | - Maximino Manzanera
- Department of Microbiology, Institute of Water Research, University of Granada, C/ Ramón y Cajal No. 4, 18071, Granada, Spain
| | - Concepción Calvo
- Department of Microbiology, Institute of Water Research, University of Granada, C/ Ramón y Cajal No. 4, 18071, Granada, Spain.
| |
Collapse
|
12
|
Goswami M, Deka S. Biosurfactant production by a rhizosphere bacteria Bacillus altitudinis MS16 and its promising emulsification and antifungal activity. Colloids Surf B Biointerfaces 2019; 178:285-296. [DOI: 10.1016/j.colsurfb.2019.03.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 03/01/2019] [Accepted: 03/02/2019] [Indexed: 01/12/2023]
|
13
|
Abo-State M, Riad B, Bakr A, Abdel Aziz M. Biodegradation of naphthalene byBordetella aviumisolated from petroleum refinery wastewater in Egypt and its pathway. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2017.10.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M.A.M. Abo-State
- Department of Radiation Microbiology, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Nasr City, Cairo, Egypt
| | - B.Y. Riad
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - A.A. Bakr
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute (EPRI), Egypt
| | - M.F. Abdel Aziz
- Department of Biochemistry, Faculty of Science, Cairo University, Giza, Egypt
| |
Collapse
|
14
|
Yang R, Zhang G, Li S, Moazeni F, Li Y, Wu Y, Zhang W, Chen T, Liu G, Zhang B, Wu X. Degradation of crude oil by mixed cultures of bacteria isolated from the Qinghai-Tibet plateau and comparative analysis of metabolic mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:1834-1847. [PMID: 30456621 DOI: 10.1007/s11356-018-3718-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 11/08/2018] [Indexed: 06/09/2023]
Abstract
This study investigates the biodegradation of crude oil by a mixed culture of bacteria isolated from the Qinghai-Tibet plateau using gas chromatography-mass spectrometer (GC-MS) and the gravimetric method. The results showed that a mixed culture has a stronger ability to degrade hydrocarbon than pure cultures. Once both Nocardia soli Y48 and Rhodococcus erythropolis YF28-1 (8) were present in a culture, the culture demonstrated the highest crude oil removal efficiency of almost 100% after 10 days of incubation at 20 °C. Moreover, further analysis of the degradation mechanisms used by the above strains, which revealed utilization of different n-alkane substrates, indicated the diversity of evolution and variations in different strains, as well as the importance of multiple metabolic mechanisms for alkane degradation. Therefore, it is concluded that a mixed culture of Y48 and YF28-1 (8) strains can provide a more effective method for bioremediation of hydrocarbon-contaminated soil in permafrost regions.
Collapse
Affiliation(s)
- Ruiqi Yang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Gaosen Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Shiweng Li
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Faegheh Moazeni
- School of Science Engineering and Technology, Penn State Harrisburg University, Middletown, PA, 17057, USA
| | - Yunshi Li
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Yongna Wu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Wei Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Tuo Chen
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China.
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Guangxiu Liu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China.
| | - Binglin Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Xiukun Wu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| |
Collapse
|
15
|
Barnes NM, Khodse VB, Lotlikar NP, Meena RM, Damare SR. Bioremediation potential of hydrocarbon-utilizing fungi from select marine niches of India. 3 Biotech 2018; 8:21. [PMID: 29276659 DOI: 10.1007/s13205-017-1043-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 12/08/2017] [Indexed: 11/29/2022] Open
Abstract
Ten fungal isolates with an ability to degrade crude oil were isolated from select marine substrates, such as mangrove sediments, Arabian Sea sediments, and tarballs. Out of the ten isolates, six belonged to Aspergillus, two to Fusarium and one each to Penicillium and Acremonium as identified using ITS rDNA sequencing. The selected ten fungal isolates were found to degrade the long-chain n-alkanes as opposed to short-chain n-alkanes from the crude oil. Mangrove fungus #NIOSN-M126 (Penicillium citrinum) was found to be highly efficient in biodegradation of crude oil, reducing the total crude oil content by 77% and the individual n-alkane fraction by an average of 95.37%, indicating it to be a potential candidate for the development into a bioremediation agent.
Collapse
Affiliation(s)
- Natasha Maria Barnes
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Panaji, 403004 India
| | - Vishwas B Khodse
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Panaji, 403004 India
| | - Nikita P Lotlikar
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Panaji, 403004 India
| | - Ram Murti Meena
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Panaji, 403004 India
| | - Samir R Damare
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Panaji, 403004 India
| |
Collapse
|
16
|
Kolsal F, Akbal Z, Liaqat F, Gök O, Sponza DT, Eltem R. Hydrocarbon degradation abilities of psychrotolerant Bacillus strains. AIMS Microbiol 2017; 3:467-482. [PMID: 31294171 PMCID: PMC6604985 DOI: 10.3934/microbiol.2017.3.467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 06/07/2017] [Indexed: 11/24/2022] Open
Abstract
Biodegradation requires identification of hydrocarbon degrading microbes and the investigation of psychrotolerant hydrocarbon degrading microbes is essential for successful biodegradation in cold seawater. In the present study, a total of 597 Bacillus isolates were screened to select psychrotolerant strains and 134 isolates were established as psychrotolerant on the basis of their ability to grow at 7 °C. Hydrocarbon degradation capacities of these 134 psychrotolerant isolate were initially investigated on agar medium containing different hydrocarbons (naphthalene, n-hexadecane, mineral oil) and 47 positive isolates were grown in broth medium containing hydrocarbons at 20 °C under static culture. Bacterial growth was estimated in terms of viable cell count (cfu ml-1). Isolates showing the best growth in static culture were further grown in presence of crude oil under shaking culture and viable cell count was observed between 8.3 × 105-7.4 × 108 cfu ml-1. In the final step, polycyclic aromatic hydrocarbon (PAH) (chrysene and naphthalene) degradation yield of two most potent isolates was determined by GC-MS along with the measurement of pH, biomass and emulsification activities. Results showed that isolates Ege B.6.2i and Ege B.1.4Ka have shown 60% and 36% chrysene degradation yield, respectively, while 33% and 55% naphthalene degradation yield, respectively, with emulsification activities ranges between 33-50%. These isolates can be used to remove hydrocarbon contamination from different environments, particularly in cold regions.
Collapse
Affiliation(s)
- Fulya Kolsal
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, İzmir, Turkey
| | - Zeynep Akbal
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, İzmir, Turkey
| | - Fakhra Liaqat
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, 35100, İzmir, Turkey
| | - Oğuzhan Gök
- Department of Environmental Engineering, Engineering Faculty, Aksaray University, Aksaray, Turkey
| | - Delia Teresa Sponza
- Department of Environmental Engineering, Engineering Faculty, Dokuz Eylül University, Buca, Kaynaklar Campus, 35160, İzmir, Turkey
| | - Rengin Eltem
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, İzmir, Turkey
| |
Collapse
|
17
|
Reddy MV, Yajima Y, Choi D, Chang YC. Biodegradation of toxic organic compounds using a newly isolated Bacillus sp. CYR2. BIOTECHNOL BIOPROC E 2017. [DOI: 10.1007/s12257-017-0117-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
18
|
Qi YB, Wang CY, Lv CY, Lun ZM, Zheng CG. Removal Capacities of Polycyclic Aromatic Hydrocarbons (PAHs) by a Newly Isolated Strain from Oilfield Produced Water. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14020215. [PMID: 28241412 PMCID: PMC5334769 DOI: 10.3390/ijerph14020215] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 01/11/2017] [Accepted: 01/20/2017] [Indexed: 11/16/2022]
Abstract
The polycyclic aromatic hydrocarbon (PAH)-degrading strain Q8 was isolated from oilfield produced water. According to the analysis of a biochemical test, 16S rRNA gene, house-keeping genes and DNA-DNA hybridization, strain Q8 was assigned to a novel species of the genus Gordonia. The strain could not only grow in mineral salt medium (MM) and utilize naphthalene and pyrene as its sole carbon source, but also degraded mixed naphthalene, phenanthrene, anthracene and pyrene. The degradation ratio of these four PAHs reached 100%, 95.4%, 73.8% and 53.4% respectively after being degraded by Q8 for seven days. A comparative experiment found that the PAHs degradation efficiency of Q8 is higher than that of Gordonia alkaliphila and Gordonia paraffinivorans, which have the capacities to remove PAHs. Fourier transform infrared spectra, saturate, aromatic, resin and asphaltene (SARA) and gas chromatography-mass spectrometry (GC-MS) analysis of crude oil degraded by Q8 were also studied. The results showed that Q8 could utilize n-alkanes and PAHs in crude oil. The relative proportions of the naphthalene series, phenanthrene series, thiophene series, fluorene series, chrysene series, C21-triaromatic steroid, pyrene, and benz(a)pyrene were reduced after being degraded by Q8. Gordonia sp. nov. Q8 had the capacity to remediate water and soil environments contaminated by PAHs or crude oil, and provided a feasible way for the bioremediation of PAHs and oil pollution.
Collapse
Affiliation(s)
- Yi-Bin Qi
- Petroleum Exploration & Production Research Institute, SINOPEC, No. 31, Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Chen-Yu Wang
- China University of Geosciences-Beijing, College of Energy, No. 29, Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Cheng-Yuan Lv
- Petroleum Exploration & Production Research Institute, SINOPEC, No. 31, Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Zeng-Min Lun
- Petroleum Exploration & Production Research Institute, SINOPEC, No. 31, Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Cheng-Gang Zheng
- Petroleum Exploration & Production Research Institute, SINOPEC, No. 31, Xueyuan Road, Haidian District, Beijing 100083, China.
| |
Collapse
|
19
|
Sukhdhane KS, Pandey PK, Ajima MNO, Jayakumar T, Vennila A, Raut SM. Isolation and Characterization of Phenanthrene-Degrading Bacteria from PAHs Contaminated Mangrove Sediment of Thane Creek in Mumbai, India. Polycycl Aromat Compd 2017. [DOI: 10.1080/10406638.2016.1261911] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- K. S. Sukhdhane
- Fishery Environment and Management Division, Veraval Regional Centre of Central Marine Fisheries Research Institute, Veraval, India
| | - P. K. Pandey
- Aquatic Environment and Health Management Division, Central Institute of Fisheries Education, Mumbai, India
| | - M. N. O. Ajima
- Aquatic Environment and Health Management Division, Central Institute of Fisheries Education, Mumbai, India
- Department of Fisheries and Aquaculture Technology, Federal University of Technology, Owerri, Nigeria
| | - T. Jayakumar
- Aquatic Environment and Health Management Division, Central Institute of Fisheries Education, Mumbai, India
| | - A. Vennila
- Department of Soil Science and Soil Nutrition, Sugarcane Breeding Institute, Coimbatore, India
| | - S. M. Raut
- Aquatic Environment and Health Management Division, Central Institute of Fisheries Education, Mumbai, India
| |
Collapse
|
20
|
Lebrero R, Ángeles R, Pérez R, Muñoz R. Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 183:585-593. [PMID: 27623370 DOI: 10.1016/j.jenvman.2016.09.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 08/31/2016] [Accepted: 09/03/2016] [Indexed: 06/06/2023]
Abstract
The potential of algal-bacterial symbiosis for off-gas abatement was investigated for the first time by comparatively evaluating the performance of a bacterial (CB) and an algal-bacterial (PB) airlift bioreactors during the treatment of a 6 g m-3 toluene laden air emission. The influence of biomass concentration and of the addition of a non-aqueous phase was also investigated. A poor and fluctuating performance was recorded during the initial stages of the experiment, which was attributed to the low biomass concentration present in both reactors and to the accumulation of toxic metabolites. In this sense, an increase in the dilution rate from 0.23 to 0.45 d-1 and in biomass concentration from ∼1 to ∼5 g L-1 resulted in elimination capacities (ECs) of 300 g m-3 h-1 (corresponding to removal efficiencies ∼ 90%). Microalgae activity allowed for a reduction in the emitted CO2 and an increase in dissolved O2 concentration in the PB. However, excess biomass growth over 11 g L-1 hindered light penetration and severely decreased photosynthetic activity. The addition of silicone oil at 20% (on a volume basis) stabilized system performance, leading to dissolved O2 concentrations of 7 mg L-1 and steady ECs of 320 g m-3 h-1 in the PB. The ECs here recorded were considerably higher than those previously reported in toluene-degrading bioreactors. Finally, microbial population analysis by DGGE-sequencing demonstrated the differential specialization of the microbial community in both reactors, likely resulting in different toluene degradation pathways and metabolites production.
Collapse
Affiliation(s)
- Raquel Lebrero
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina, s/n, 47011, Valladolid, Spain.
| | - Roxana Ángeles
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina, s/n, 47011, Valladolid, Spain
| | - Rebeca Pérez
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina, s/n, 47011, Valladolid, Spain
| | - Raúl Muñoz
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina, s/n, 47011, Valladolid, Spain
| |
Collapse
|
21
|
Mikolasch A, Reinhard A, Alimbetova A, Omirbekova A, Pasler L, Schumann P, Kabisch J, Mukasheva T, Schauer F. From oil spills to barley growth - oil-degrading soil bacteria and their promoting effects. J Basic Microbiol 2016; 56:1252-1273. [PMID: 27624187 DOI: 10.1002/jobm.201600300] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/06/2016] [Indexed: 12/30/2022]
Abstract
Heavy contamination of soils by crude oil is omnipresent in areas of oil recovery and exploitation. Bioremediation by indigenous plants in cooperation with hydrocarbon degrading microorganisms is an economically and ecologically feasible means to reclaim contaminated soils. To study the effects of indigenous soil bacteria capable of utilizing oil hydrocarbons on biomass production of plants growing in oil-contaminated soils eight bacterial strains were isolated from contaminated soils in Kazakhstan and characterized for their abilities to degrade oil components. Four of them, identified as species of Gordonia and Rhodococcus turned out to be effective degraders. They produced a variety of organic acids from oil components, of which 59 were identified and 7 of them are hitherto unknown acidic oil metabolites. One of them, Rhodococcus erythropolis SBUG 2054, utilized more than 140 oil components. Inoculating barley seeds together with different combinations of these bacterial strains restored normal growth of the plants on contaminated soils, demonstrating the power of this approach for bioremediation. Furthermore, we suggest that the plant promoting effect of these bacteria is not only due to the elimination of toxic oil hydrocarbons but possibly also to the accumulation of a variety of organic acids which modulate the barley's rhizosphere environment.
Collapse
Affiliation(s)
- Annett Mikolasch
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| | - Anne Reinhard
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| | - Anna Alimbetova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Anel Omirbekova
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Lisa Pasler
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| | - Peter Schumann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Johannes Kabisch
- Institute of Biochemistry, University Greifswald, 17487, Greifswald, Germany
| | - Togzhan Mukasheva
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Frieder Schauer
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Greifswald, Germany
| |
Collapse
|
22
|
Fernet JL, Lawrence JR, Germida JJ. Naturally occurring phenanthrene degrading bacteria associated with seeds of various plant species. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:423-425. [PMID: 26515514 DOI: 10.1080/15226514.2015.1109593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Seeds of 11 of 19 plant species tested yielded naturally occurring phenanthrene degrading bacteria when placed on phenanthrene impression plates. Seed associated phenanthrene degrading bacteria were mostly detected on caragana, Canada thistle, creeping red fescue, western wheatgrass, and tall wheat grass. Based on 16S rRNA analysis the most common bacteria isolated from these seeds were strains belonging to the genera Enterobacteria, Erwinia, Burkholderia, Pantoea, Pseudomonas, and Sphingomonas. These plants may provide an excellent source of pre-adapted bacterial-plant associations highly suitable for use in remediation of contaminated soil environments.
Collapse
Affiliation(s)
- Jennifer L Fernet
- a Department of Soil Science , University of Saskatchewan , Saskatoon , SK , Canada
| | | | - James J Germida
- a Department of Soil Science , University of Saskatchewan , Saskatoon , SK , Canada
| |
Collapse
|
23
|
Rodríguez-Morgado B, Gómez I, Parrado J, García C, Hernández T, Tejada M. Accelerated degradation of PAHs using edaphic biostimulants obtained from sewage sludge and chicken feathers. JOURNAL OF HAZARDOUS MATERIALS 2015; 300:235-242. [PMID: 26188866 DOI: 10.1016/j.jhazmat.2015.05.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/29/2015] [Accepted: 05/26/2015] [Indexed: 06/04/2023]
Abstract
We studied in the laboratory the bioremediation effects over a 100-day period of three edaphic biostimulants (BS) obtained from sewage sludge (SS) and from two different types of chicken feathers (CF1 and CF2), in a soil polluted with three polycyclic aromatic hydrocarbons (PAH) (phenanthrene, Phe; pyrene, Py; and benzo(a)pyrene, BaP), at a concentration of 100 mg kg(-1) soil. We determined their effects on enzymatic activities and on soil microbial community. Those BS with larger amounts of proteins and a higher proportion of peptides (<300 daltons), exerted a greater stimulation on the soil biochemical properties and microbial community, possibly because low molecular weight proteins can be easily assimilated by soil microorganisms. The soil dehydrogenase, urease, β-glucosidase and phosphatase activities and microbial community decreased in PAH-polluted soil. This decrease was more pronounced in soils contaminated with BaP than with Py and Phe. The application of the BS to PAH-polluted soils decreased the inhibition of the soil biological properties, principally at 7 days into the experiment. This decrease was more pronounced in soils contaminated with BaP than with Py and Phe and was higher in polluted soils amended with CF2, followed by SS and CF1, respectively.
Collapse
Affiliation(s)
- Bruno Rodríguez-Morgado
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. García González 2, 41012 Sevilla, Spain
| | - Isidoro Gómez
- Grupo de Investigación Edafología Ambiental, Departamento de Cristalografía, Mineralogía y Química Agrícola, E.T.S.I.A. Universidad de Sevilla, Crta de Utrera km. 1, 41013 Sevilla, Spain
| | - Juan Parrado
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. García González 2, 41012 Sevilla, Spain
| | - Carlos García
- Departamento de Conservación de Suelos y Agua y Manejo de Residuos Orgánicos, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, P.O. Box 4195, 30080 Murcia, Spain
| | - Teresa Hernández
- Departamento de Conservación de Suelos y Agua y Manejo de Residuos Orgánicos, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, P.O. Box 4195, 30080 Murcia, Spain
| | - Manuel Tejada
- Grupo de Investigación Edafología Ambiental, Departamento de Cristalografía, Mineralogía y Química Agrícola, E.T.S.I.A. Universidad de Sevilla, Crta de Utrera km. 1, 41013 Sevilla, Spain.
| |
Collapse
|
24
|
Lipińska A, Wyszkowska J, Kucharski J. Diversity of organotrophic bacteria, activity of dehydrogenases and urease as well as seed germination and root growth Lepidium sativum, Sorghum saccharatum and Sinapis alba under the influence of polycyclic aromatic hydrocarbons. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:18519-30. [PMID: 26341339 PMCID: PMC4669374 DOI: 10.1007/s11356-015-5329-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 08/27/2015] [Indexed: 05/04/2023]
Abstract
Polycyclic aromatic hydrocarbons are organic compounds with highly toxic, carcinogenic, and mutagenic properties, which adversely affect the basic biological parameters of the soil, including the count of microorganisms, and the enzymatic activity. In addition to disturbances to the biological activity of the soil, PAHs may also exhibit toxic effects on plants. In view of the above, the study involved testing aimed at the determination of the effects of polycyclic aromatic hydrocarbons in a form of naphthalene, phenanthrene, anthracene and pyrene on the count, colony development (CD) index, ecophysiological (EP) diversity index of organotrophic bacteria, and the activity of soil dehydrogenases and soil urease. Moreover, an attempt was made to determine the soil's resistance based on the activity of the above-listed enzymes, and the effect of polycyclic aromatic hydrocarbons on seed germination and root growth was assessed by Lepidium sativum, Sorghum saccharatum, and Sinapis alba. In addition, the species of bacteria found in a soil subjected to strong pressure of polycyclic aromatic hydrocarbons were isolated. The experiment was performed in a laboratory on samples of loamy sand. Polycyclic aromatic hydrocarbons were introduced into the soil in an amount of 0, 1000, 2000, and 4000 mg kg(-1) of soil dry matter. Germination and growth of cress (L. sativum), white mustard (S. alba), and sweet sorghum (S. saccharatum) were determined using Phytotoxkit tests. It was found that the tested PAHs increased the average colony counts of organotrophic soil bacteria; pyrene did so to the greatest extent (2.2-fold relative to non-contaminated soil), phenanthrene to the smallest extent (1.4-fold relative to non-contaminated soil). None of the PAHs changed the value of the bacterial colony development (CD) index, while anthracene and pyrene increased the value of the eco-physiological (EP) diversity indicator. PAHs lowered the activity of the tested enzymes. The activity of dehydrogenases was dependent on a greater extent by the type of hydrocarbon (54.56%) rather than by the dose (10.64%), while for the activity of urease, it was the opposite. The greater extent was dependent on dose (95.42%) rather than by type (0.21%). Dehydrogenases are characterised by greater resistance to the action of PAHs than urease. Based on seed germination and root growth, it has shown that S. alba is best suited, being the most vulnerable plant, while S. saccharatum is the least suited. Subjecting a soil to strong pressure of PAHs leads to disturbances to the biological parameters of the soil, seed germination, and root growth L. sativum, S. saccharatum, and S. alba.
Collapse
Affiliation(s)
- Aneta Lipińska
- Department of Microbiology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 3, 10-727, Olsztyn, Poland
| | - Jadwiga Wyszkowska
- Department of Microbiology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 3, 10-727, Olsztyn, Poland.
| | - Jan Kucharski
- Department of Microbiology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 3, 10-727, Olsztyn, Poland
| |
Collapse
|
25
|
Guermouche M'rassi A, Bensalah F, Gury J, Duran R. Isolation and characterization of different bacterial strains for bioremediation of n-alkanes and polycyclic aromatic hydrocarbons. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:15332-15346. [PMID: 25813636 DOI: 10.1007/s11356-015-4343-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 03/09/2015] [Indexed: 06/04/2023]
Abstract
Crude oil is a common environmental pollutant composed of a large number of both aromatic and aliphatic hydrocarbons. Biodegradation is carried out by microbial communities that are important in determining the fate of pollutants in the environment. The intrinsic biodegradability of the hydrocarbons and the distribution in the environment of competent degrading microorganisms are crucial information for the implementation of bioremediation processes. In the present study, the biodegradation capacities of various bacteria toward aliphatic and aromatic hydrocarbons were determined. The purpose of the study was to isolate and characterize hydrocarbon-degrading bacteria from contaminated soil of a refinery in Arzew, Algeria. A collection of 150 bacterial strains was obtained; the bacterial isolates were identified by 16S rRNA gene sequencing and their ability to degrade hydrocarbon compounds characterized. The isolated strains were mainly affiliated to the Gamma-Proteobacteria class. Among them, Pseudomonas spp. had the ability to metabolize high molecular weight hydrocarbon compounds such as pristane (C19) at 35.11 % by strain LGM22 and benzo[a] pyrene (C20) at 33.93 % by strain LGM11. Some strains were able to grow on all the hydrocarbons tested including octadecane, squalene, phenanthrene, and pyrene. Some strains were specialized degrading only few substrates. In contrast, the strain LGM2 designated as Pseudomonas sp. was found able to degrade both linear and branched alkanes as well as low and high poly-aromatic hydrocarbons (PAHs). The alkB gene involved in alkane degradation was detected in LGM2 and other Pseudomonas-related isolates. The capabilities of the isolated bacterial strains to degrade alkanes and PAHs should be of great practical significance in bioremediation of oil-contaminated environments.
Collapse
Affiliation(s)
- A Guermouche M'rassi
- Laboratoire de Génétique Microbienne, Faculté des Sciences de la Nature et de la Vie, Université Oran 1 Ahmed Ben Bella, Es-Senia, Oran, 31000, Algérie, Algeria.
| | - F Bensalah
- Laboratoire de Génétique Microbienne, Faculté des Sciences de la Nature et de la Vie, Université Oran 1 Ahmed Ben Bella, Es-Senia, Oran, 31000, Algérie, Algeria
| | - J Gury
- Equipe Environnement et Microbiologie, UMR IPREM5254, IBEAS, Université de Pau et des Pays de l'Adour, Pau, France
| | - R Duran
- Equipe Environnement et Microbiologie, UMR IPREM5254, IBEAS, Université de Pau et des Pays de l'Adour, Pau, France
| |
Collapse
|
26
|
Venkateswar Reddy M, Mawatari Y, Yajima Y, Seki C, Hoshino T, Chang YC. Poly-3-hydroxybutyrate (PHB) production from alkylphenols, mono and poly-aromatic hydrocarbons using Bacillus sp. CYR1: A new strategy for wealth from waste. BIORESOURCE TECHNOLOGY 2015; 192:711-717. [PMID: 26101960 DOI: 10.1016/j.biortech.2015.06.043] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 06/04/2023]
Abstract
In the present study five different types of alkylphenols, each of the two different types of mono and poly-aromatic hydrocarbons were selected for degradation, and conversion into poly-3-hydroxybutyrate (PHB) using the Bacillus sp. CYR1. Strain CYR1 showed growth with various toxic organic compounds. Degradation pattern of all the organic compounds at 100 mg/l concentration with or without addition of tween-80 were analyzed using high pressure liquid chromatography (HPLC). Strain CYR1 showed good removal of compounds in the presence of tween-80 within 3 days, but it took 6 days without addition of tween-80. Strain CYR1 showed highest PHB production with phenol (51 ± 5%), naphthalene (42 ± 4%), 4-chlorophenol (32 ± 3%) and 4-nonylphenol (29 ± 3%). The functional groups, structure, and thermal properties of the produced PHB were analyzed. These results denoted that the strain Bacillus sp. CYR1 can be used for conversion of different toxic compounds persistent in wastewaters into useable biological polyesters.
Collapse
Affiliation(s)
- M Venkateswar Reddy
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Yasuteru Mawatari
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Yuka Yajima
- Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto-shi, Kyoto 606-8501, Japan
| | - Chigusa Seki
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Tamotsu Hoshino
- Biomass Refinery Research Center, National Institute of Advanced Industrial, Sciences and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan; Bioproduction Research Institute, National Institute of Advanced Industrial Sciences, and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan
| | - Young-Cheol Chang
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan.
| |
Collapse
|
27
|
Waste lubricating oil removal in a batch reactor by mixed bacterial consortium: a kinetic study. Bioprocess Biosyst Eng 2015; 38:2095-106. [PMID: 26271337 DOI: 10.1007/s00449-015-1449-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 07/28/2015] [Indexed: 10/23/2022]
Abstract
The growth kinetics and biodegradation of two waste lubricating oil samples including waste engine oil (WEO) and waste transformer oil (WTO) were studied using pure isolates and mixed culture of Ochrobactrum sp. C1 and Bacillus sp. K1. The mixed culture significantly influenced degradation efficiency of the pure isolates through bioaugmentation process. In particular, the mixed culture was capable of growing on various n-alkanes and polycyclic aromatic hydrocarbons and was able to tolerate unusually high concentrations of waste lubricants (WEO-86.0 g/L and WTO-81.5 g/L). The initial concentration of waste lubricating oils has been varied in the range of 1-10 % (v/v). Under this experimental range, the bacterial growth has been observed to follow Haldane-type kinetics characterizing the presence of substrate inhibition. Haldane model was used to fit the exponential growth data and the following kinetic parameters were obtained: μ max = 0.078 h(-1), K S = 23.101 g/L, K i = 43.844 g/L for WEO; and μ max = 0.044 h(-1), K S = 10.662 g/L, K i = 58.310 g/L for WTO. The values of intrinsic kinetic parameters, like specific growth rate μ max, half saturation constant, K S, inhibition constant, K i and the maximum substrate concentration, S max and growth yield coefficient Y x/s , have been determined using each model hydrocarbon and their mixture as limiting substrate. Relative changes in the values of the kinetic parameters have been correlated to the number of carbon atoms present in n-alkanes. The metabolites from degradation of model hydrocarbon compounds have been identified by GC-MS to elucidate the possible pathway of waste lubricating oil degradation process.
Collapse
|
28
|
Stefani FOP, Bell TH, Marchand C, de la Providencia IE, El Yassimi A, St-Arnaud M, Hijri M. Culture-Dependent and -Independent Methods Capture Different Microbial Community Fractions in Hydrocarbon-Contaminated Soils. PLoS One 2015; 10:e0128272. [PMID: 26053848 PMCID: PMC4460130 DOI: 10.1371/journal.pone.0128272] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 04/23/2015] [Indexed: 12/21/2022] Open
Abstract
Bioremediation is a cost-effective and sustainable approach for treating polluted soils, but our ability to improve on current bioremediation strategies depends on our ability to isolate microorganisms from these soils. Although culturing is widely used in bioremediation research and applications, it is unknown whether the composition of cultured isolates closely mirrors the indigenous microbial community from contaminated soils. To assess this, we paired culture-independent (454-pyrosequencing of total soil DNA) with culture-dependent (isolation using seven different growth media) techniques to analyse the bacterial and fungal communities from hydrocarbon-contaminated soils. Although bacterial and fungal rarefaction curves were saturated for both methods, only 2.4% and 8.2% of the bacterial and fungal OTUs, respectively, were shared between datasets. Isolated taxa increased the total recovered species richness by only 2% for bacteria and 5% for fungi. Interestingly, none of the bacteria that we isolated were representative of the major bacterial OTUs recovered by 454-pyrosequencing. Isolation of fungi was moderately more effective at capturing the dominant OTUs observed by culture-independent analysis, as 3 of 31 cultured fungal strains ranked among the 20 most abundant fungal OTUs in the 454-pyrosequencing dataset. This study is one of the most comprehensive comparisons of microbial communities from hydrocarbon-contaminated soils using both isolation and high-throughput sequencing methods.
Collapse
Affiliation(s)
- Franck O. P. Stefani
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
| | - Terrence H. Bell
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
| | - Charlotte Marchand
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
| | - Ivan E. de la Providencia
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
| | - Abdel El Yassimi
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
| | - Marc St-Arnaud
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
| | - Mohamed Hijri
- Department of Biological Sciences, Centre sur la biodiversité, Université de Montréal, Montréal, Québec, Canada
- * E-mail:
| |
Collapse
|
29
|
Wahab A, Mujahid T, Padhiar S, Subhan S, Baloch M, Pirzada Z. Isolation and Characterization of Hydrocarbon Degrading Bacteria from Petrol Contaminated Soil. ACTA ACUST UNITED AC 2015. [DOI: 10.6000/1927-5129.2015.11.32] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
30
|
Colonization on root surface by a phenanthrene-degrading endophytic bacterium and its application for reducing plant phenanthrene contamination. PLoS One 2014; 9:e108249. [PMID: 25247301 PMCID: PMC4172705 DOI: 10.1371/journal.pone.0108249] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 08/27/2014] [Indexed: 11/19/2022] Open
Abstract
A phenanthrene-degrading endophytic bacterium, Pn2, was isolated from Alopecurus aequalis Sobol grown in soils contaminated with polycyclic aromatic hydrocarbons (PAHs). Based on morphology, physiological characteristics and the 16S rRNA gene sequence, it was identified as Massilia sp. Strain Pn2 could degrade more than 95% of the phenanthrene (150 mg·L−1) in a minimal salts medium (MSM) within 48 hours at an initial pH of 7.0 and a temperature of 30°C. Pn2 could grow well on the MSM plates with a series of other PAHs, including naphthalene, acenaphthene, anthracene and pyrene, and degrade them to different degrees. Pn2 could also colonize the root surface of ryegrass (Lolium multiflorum Lam), invade its internal root tissues and translocate into the plant shoot. When treated with the endophyte Pn2 under hydroponic growth conditions with 2 mg·L−1 of phenanthrene in the Hoagland solution, the phenanthrene concentrations in ryegrass roots and shoots were reduced by 54% and 57%, respectively, compared with the endophyte-free treatment. Strain Pn2 could be a novel and useful bacterial resource for eliminating plant PAH contamination in polluted environments by degrading the PAHs inside plants. Furthermore, we provide new perspectives on the control of the plant uptake of PAHs via endophytic bacteria.
Collapse
|
31
|
Zyakun AM, Brodskii ES, Baskunov BP, Zakharchenko VN, Peshenko VP, Filonov AE, Vetrova AA, Ivanova AA, Boronin AM. Bioremediation of oil-polluted soils: Using the [13C]/[12C] ratio to characterize microbial products of oil hydrocarbon biodegradation. APPL BIOCHEM MICRO+ 2014. [DOI: 10.1134/s0003683814040152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
32
|
Silva EJ, Rocha e Silva NMP, Rufino RD, Luna JM, Silva RO, Sarubbo LA. Characterization of a biosurfactant produced by Pseudomonas cepacia CCT6659 in the presence of industrial wastes and its application in the biodegradation of hydrophobic compounds in soil. Colloids Surf B Biointerfaces 2014. [DOI: https:/doi.org/10.1016/j.colsurfb.2014.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
33
|
Silva EJ, Rocha e Silva NMP, Rufino RD, Luna JM, Silva RO, Sarubbo LA. Characterization of a biosurfactant produced by Pseudomonas cepacia CCT6659 in the presence of industrial wastes and its application in the biodegradation of hydrophobic compounds in soil. Colloids Surf B Biointerfaces 2014. [DOI: https://doi.org/10.1016/j.colsurfb.2014.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
34
|
Patowary K, Saikia RR, Kalita MC, Deka S. Degradation of polyaromatic hydrocarbons employing biosurfactant-producing Bacillus pumilus KS2. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0854-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
35
|
Characterization of a biosurfactant produced by Pseudomonas cepacia CCT6659 in the presence of industrial wastes and its application in the biodegradation of hydrophobic compounds in soil. Colloids Surf B Biointerfaces 2014; 117:36-41. [PMID: 24613853 DOI: 10.1016/j.colsurfb.2014.02.012] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 11/22/2022]
Abstract
The bacterium Pseudomonas cepacia CCT6659 cultivated with 2% soybean waste frying oil and 2% corn steep liquor as substrates produced a biosurfactant with potential application in the bioremediation of soils. The biosurfactant was classified as an anionic biomolecule composed of 75% lipids and 25% carbohydrates. Characterization by proton nuclear magnetic resonance ((1)H and (13)C NMR) revealed the presence of carbonyl, olefinic and aliphatic groups, with typical spectra of lipids. Four sets of biodegradation experiments were carried out with soil contaminated by hydrophobic organic compounds amended with molasses in the presence of an indigenous consortium, as follows: Set 1-soil+bacterial cells; Set 2-soil+biosurfactant; Set 3-soil+bacterial cells+biosurfactant; and Set 4-soil without bacterial cells or biosurfactant (control). Significant oil biodegradation activity (83%) occurred in the first 10 days of the experiments when the biosurfactant and bacterial cells were used together (Set 3), while maximum degradation of the organic compounds (above 95%) was found in Sets 1-3 between 35 and 60 days. It is evident from the results that the biosurfactant alone and its producer species are both capable of promoting biodegradation to a large extent.
Collapse
|
36
|
Sowada J, Schmalenberger A, Ebner I, Luch A, Tralau T. Degradation of benzo[a]pyrene by bacterial isolates from human skin. FEMS Microbiol Ecol 2014; 88:129-39. [DOI: 10.1111/1574-6941.12276] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 12/12/2013] [Accepted: 12/20/2013] [Indexed: 11/29/2022] Open
Affiliation(s)
- Juliane Sowada
- Department for Product Safety; German Federal Institute of Risk Assessment (BfR); Berlin Germany
| | | | - Ingo Ebner
- Department for Product Safety; German Federal Institute of Risk Assessment (BfR); Berlin Germany
| | - Andreas Luch
- Department for Product Safety; German Federal Institute of Risk Assessment (BfR); Berlin Germany
| | - Tewes Tralau
- Department for Product Safety; German Federal Institute of Risk Assessment (BfR); Berlin Germany
| |
Collapse
|
37
|
Cébron A, Arsène-Ploetze F, Bauda P, Bertin PN, Billard P, Carapito C, Devin S, Goulhen-Chollet F, Poirel J, Leyval C. Rapid impact of phenanthrene and arsenic on bacterial community structure and activities in sand batches. MICROBIAL ECOLOGY 2014; 67:129-44. [PMID: 24189653 DOI: 10.1007/s00248-013-0313-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 10/10/2013] [Indexed: 05/08/2023]
Abstract
The impact of both organic and inorganic pollution on the structure of soil microbial communities is poorly documented. A short-time batch experiment (6 days) was conducted to study the impact of both types of pollutants on the taxonomic, metabolic and functional diversity of soil bacteria. For this purpose sand spiked with phenanthrene (500 mg kg(-1) sand) or arsenic (arsenite 0.66 mM and arsenate 12.5 mM) was supplemented with artificial root exudates and was inoculated with bacteria originated from an aged PAH and heavy-metal-polluted soil. The bacterial community was characterised using bacterial strain isolation, TTGE fingerprinting and proteomics. Without pollutant, or with phenanthrene or arsenic, there were no significant differences in the abundance of bacteria and the communities were dominated by Pseudomonas and Paenibacillus genera. However, at the concentrations used, both phenanthrene or arsenic were toxic as shown by the decrease in mineralisation activities. Using community-level physiological profiles (Biolog Ecoplates™) or differential proteomics, we observed that the pollutants had an impact on the community physiology, in particular phenanthrene induced a general cellular stress response with changes in the central metabolism and membrane protein synthesis. Real-time PCR quantification of functional genes and transcripts revealed that arsenic induced the transcription of functional arsenic resistance and speciation genes (arsB, ACR3 and aioA), while no transcription of PAH-degradation genes (PAH-dioxygenase and catechol-dioxygenase) was detected with phenanthrene. Altogether, in our tested conditions, pollutants do not have a major effect on community abundance or taxonomic composition but rather have an impact on metabolic and functional bacterial properties.
Collapse
Affiliation(s)
- A Cébron
- LIEC UMR7360, CNRS-Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, 54506, Vandoeuvre-lès-Nancy Cedex, France,
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Pelaez AI, Lores I, Sotres A, Mendez-Garcia C, Fernandez-Velarde C, Santos JA, Gallego JLR, Sanchez J. Design and field-scale implementation of an "on site" bioremediation treatment in PAH-polluted soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 181:190-9. [PMID: 23867700 DOI: 10.1016/j.envpol.2013.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 06/10/2013] [Accepted: 06/16/2013] [Indexed: 05/15/2023]
Abstract
An "on site" bioremediation program was designed and implemented in soil polluted with polycyclic aromatic hydrocarbons (PAHs), especially naphthalene. We began by characterizing the soil's physical and chemical properties. A microbiological screening corroborated the presence of microorganisms capable of metabolizing PAHs. We then analyzed the viability of bioremediation by developing laboratory microcosms and pilot scale studies, to optimize the costs and time associated with remediation. The treatment assays were based on different types of biostimulants, such as a slow or fast-release fertilizer, combined with commercial surfactants. Once the feasibility of the biostimulation was confirmed, a real-scale bioremediation program was undertaken in 900 m(3) of contaminated soil. The three-step design reduced PAH contamination by 94.4% at the end of treatment (161 days). The decrease in pollutants was concomitant with the selection of autochthonous bacteria capable of degrading PAHs, with Bacillus and Pseudomonas the most abundant genera.
Collapse
Affiliation(s)
- A I Pelaez
- Environmental Biotechnology and Geochemistry Group, Instituto Universitario de Biotecnología de Asturias (IUBA), Universidad de Oviedo, C/Gonzalo Gutierrez Quirós s/n, 33600 Mieres, Asturias, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Bučková M, Puškarová A, Chovanová K, Kraková L, Ferianc P, Pangallo D. A simple strategy for investigating the diversity and hydrocarbon degradation abilities of cultivable bacteria from contaminated soil. World J Microbiol Biotechnol 2013; 29:1085-98. [DOI: 10.1007/s11274-013-1277-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/30/2013] [Indexed: 10/27/2022]
|
40
|
Characterization and Potentials of Indigenous Oil-Degrading Bacteria Inhabiting the Rhizosphere of Wild Oat (Avena Fatua L.) in South West of Iran. IRANIAN JOURNAL OF BIOTECHNOLOGY 2013. [DOI: 10.5812/ijb.9334] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
41
|
Cho SH, Oh KH. Removal of crude oil by microbial consortium isolated from oil-spilled area in the Korean Western coast. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2012; 89:680-685. [PMID: 22782358 DOI: 10.1007/s00128-012-0723-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 06/29/2012] [Indexed: 06/01/2023]
Abstract
The feasibility of using an indigenous microbial consortium for the removal of crude oil from an oil-spilled coastal area was explored with the ultimate aim of applying for bioremediation. Initially, we obtained the microbial consortium TK-2 that catalyzed the dispersion as well as the degradation of crude oil in supplemented sea water. GC and GC-MS were used to evaluate the removal patterns of crude oil during the incubation. The effective removal of crude oil by TK-2 occurred, and above 95% of all aliphatic and aromatic compounds detected in this work was removed within 30 days of incubation. Two predominant crude oil-grown isolates derived from TK-2 revealed gram-negative, rod-shaped cells. Both BIOLOG system and 16S rRNA sequencing were conducted to identify the strains, which were assigned to Arthrobacter sp. HK-2 and Pseudoalteromonas sp. HK-3, and registered in GenBank as [FJ477042] and [FJ477041].
Collapse
Affiliation(s)
- Su-Hee Cho
- Department of Life Science and Biotechnology, Soonchunhyang University, P.O.Box 97, Asan, Chung-Nam, 336-600, Republic of Korea
| | | |
Collapse
|
42
|
Viability of phenanthrene biodegradation by an isolated bacterial consortium: optimization and scale-up. Bioprocess Biosyst Eng 2012; 36:133-41. [DOI: 10.1007/s00449-012-0768-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 06/03/2012] [Indexed: 10/28/2022]
|
43
|
Khanna P, Goyal D, Khanna S. Characterization of pyrene utilizing Bacillus spp. from crude oil contaminated soil. Braz J Microbiol 2012; 43:606-17. [PMID: 24031871 PMCID: PMC3768841 DOI: 10.1590/s1517-83822012000200024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Revised: 07/04/2011] [Accepted: 01/16/2012] [Indexed: 11/22/2022] Open
Abstract
Pyrene, a high molecular weight polycyclic aromatic hydrocarbon (PAH), is a priority pollutant present in soil contaminated with crude oil, coal-tar and complex PAHs. Bacterial consortium CON-3 developed from crude oil contaminated soil of Patiala, Punjab (India) cometabolized 50 μg ml-1 pyrene in the presence of glucose (0.5 %; w/v) at 30 °C, as determined by reverse-phase high performance liquid chromatography (HPLC). Bacillus sp. PK-12, Bacillus sp. PK-13 and Bacillus sp. PK-14 from CON-3, identified by 16S rRNA gene sequence analysis, were able to cometabolize 64 %, 55 % and 53 % of pyrene in 35 days, respectively. With the increase in glucose concentration to 1.0 % (w/v) in growth medium isolates PK-12, PK-13 and PK-14 showed 19 - 46 % uptake of 50 μg ml-1 pyrene in 4 days, respectively. Uptake of pyrene was correlated with growth and biosurfactant activity, which is suggestive of the potential role of members of Bacillus genera in pyrene mobilization and its uptake.
Collapse
Affiliation(s)
- Purnima Khanna
- Department of Biotechnology & Environmental Sciences, Thapar University , Bhadson Road, Patiala - 147 004, Punjab , India
| | | | | |
Collapse
|
44
|
Xia WJ, Luo ZB, Dong HP, Yu L, Cui QF, Bi YQ. Synthesis, characterization, and oil recovery application of biosurfactant produced by indigenous pseudomonas aeruginosa WJ-1 using waste vegetable oils. Appl Biochem Biotechnol 2011; 166:1148-66. [PMID: 22198867 DOI: 10.1007/s12010-011-9501-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Accepted: 12/12/2011] [Indexed: 11/30/2022]
Abstract
A bacterial strain was isolated and cultured from the oil excavation areas in tropical zone in northern China. The biochemical characteristics and partial sequenced 16S rRNA gene of isolate, WJ-1, was identical to those of cultured representatives of the species Pseudomonas aeruginosa. This bacterium was able to produce a type of biosurfactant. Compositional analysis revealed that the extracted biosurfactant was composed of high percentage lipid (∼74%, w/w) and carbohydrate (∼20%, w/w) in addition to a minor fraction of protein (∼6%, w/w). The best production of 50.2 g/l was obtained when the cells were grown on minimal salt medium containing 6.0% (w/v) glucose and 0.75% (w/v) sodium nitrate supplemented with 0.1% (v/v) element solution at 37 °C and 180 rpm after 96 h. The optimum biosurfactant production pH value was found to be 6.0-8.0. The biosurfactant of WJ-1, with the critical micelle concentration of 0.014 g/L, could reduce surface tension to 24.5 mN/m and emulsified kerosene up to EI(24) ≈95. The results obtained from time course study indicated that the surface tension reduction and emulsification potential was increased in the same way to cell growth. However, maximum biosurfactant production occurred and established in the stationary growth phase (after 90 h). Thin layer chromatography, Fourier transform infrared spectrum, and mass spectrum analysis indicate the extracted biosurfactant was affiliated with rhamnolipid. The core holder flooding experiments demonstrated that the oil recovery efficiency of strain and its biosurfactant was 23.02% residual oil.
Collapse
Affiliation(s)
- Wen-Jie Xia
- Institute of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences, Langfang, China
| | | | | | | | | | | |
Collapse
|
45
|
Cerqueira VS, Hollenbach EB, Maboni F, Vainstein MH, Camargo FAO, do Carmo R Peralba M, Bento FM. Biodegradation potential of oily sludge by pure and mixed bacterial cultures. BIORESOURCE TECHNOLOGY 2011; 102:11003-11010. [PMID: 21993328 DOI: 10.1016/j.biortech.2011.09.074] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/17/2011] [Accepted: 09/18/2011] [Indexed: 05/31/2023]
Abstract
The biodegradation capacity of aliphatic and aromatic hydrocarbons of petrochemical oily sludge in liquid medium by a bacterial consortium and five pure bacterial cultures was analyzed. Three bacteria isolated from petrochemical oily sludge, identified as Stenotrophomonas acidaminiphila, Bacillus megaterium and Bacillus cibi, and two bacteria isolated from a soil contaminated by petrochemical waste, identified as Pseudomonas aeruginosa and Bacillus cereus demonstrated efficiency in oily sludge degradation when cultivated during 40 days. The bacterial consortium demonstrated an excellent oily sludge degradation capacity, reducing 90.7% of the aliphatic fraction and 51.8% of the aromatic fraction, as well as biosurfactant production capacity, achieving 39.4% reduction of surface tension of the culture medium and an emulsifying activity of 55.1%. The results indicated that the bacterial consortium has potential to be applied in bioremediation of petrochemical oily sludge contaminated environments, favoring the reduction of environmental passives and increasing industrial productivity.
Collapse
Affiliation(s)
- Vanessa S Cerqueira
- Department of Microbiology, Federal University of Rio Grande do Sul, Sarmento Leite, 500, CEP 90050-170, Porto Alegre, RS, Brazil.
| | | | | | | | | | | | | |
Collapse
|
46
|
Boucher D, Laffaire JB, Jaziri F, David C, Biderre-Petit C, Duquenne P, Peyretaillade E, Peyret P. Bacterial community composition of biological degreasing systems and health risk assessment for workers. MICROBIAL ECOLOGY 2011; 62:868-881. [PMID: 21698403 DOI: 10.1007/s00248-011-9887-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 05/31/2011] [Indexed: 05/31/2023]
Abstract
Biological degreasing system is a new technology based on the degradation capabilities of microorganisms to remove oil, grease, or lubricants from metal parts. No data is available about the potential biological health hazards in such system. Thus, a health risk assessment linked to the bacterial populations present in this new degreasing technology is, therefore, necessary for workers. We performed both cultural and molecular approaches in several biological degreasing systems for various industrial contexts to investigate the composition and dynamics of bacterial populations. These biological degreasing systems did not work with the original bacterial populations. Indeed, they were colonized by a defined and restricted group of bacteria. This group replaced the indigenous bacterial populations known for degrading complex substrates. Klebsiella pneumoniae, Klebsiella oxytoca, Pseudomonas aeruginosa, and Pantoea agglomerans were important members of the microflora found in most of the biological degreasing systems. These bacteria might represent a potential health hazard for workers.
Collapse
Affiliation(s)
- Delphine Boucher
- Clermont Université, Université d'Auvergne, Laboratoire: Microorganismes Génome et Environnement (LMGE), BP 10448, F-63000 Clermont-Ferrand, France
| | | | | | | | | | | | | | | |
Collapse
|
47
|
González N, Simarro R, Molina MC, Bautista LF, Delgado L, Villa JA. Effect of surfactants on PAH biodegradation by a bacterial consortium and on the dynamics of the bacterial community during the process. BIORESOURCE TECHNOLOGY 2011; 102:9438-9446. [PMID: 21862321 DOI: 10.1016/j.biortech.2011.07.066] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 07/17/2011] [Accepted: 07/19/2011] [Indexed: 05/31/2023]
Abstract
The aim of this work was to evaluate the effect of a non-biodegradable (Tergitol NP-10) and a biodegradable (Tween-80) surfactant on growth, degradation rate and microbial dynamics of a polycyclic aromatic hydrocarbon (PAHs) degrading consortium (C2PL05) from a petroleum polluted soil, applying cultivable and non cultivable techniques. Growth and degradation rate were significantly lower with Tergitol NP-10 than that with Tween-80. Toxicity did not show any significant reduction with Tergitol NP-10 whereas with Tween-80 toxicity was almost depleted (30%) after 40 days. Regarding to the cultured bacteria, Pseudomonas and Stenotrophomonas groups were dominant during PAH degradation with Tergitol NP-10, whereas Enterobacter and Stenotrophomonas were dominant with Tween-80. DGGE analyses (PRIMER and MDS) showed that bacteria composition was more similar between treatments when PAHs were consumed than when PAHs concentration was still high. Community changes between treatments were a consequence of Pseudomonas sp., Sphingomonas sp., Sphingobium sp. and Agromonas sp.
Collapse
Affiliation(s)
- N González
- Department of Biology and Geology, ESCET, Universidad Rey Juan Carlos, C/ Tulipán s/n, E-28933 Móstoles, Madrid, Spain
| | | | | | | | | | | |
Collapse
|
48
|
Chamkha M, Trabelsi Y, Mnif S, Sayadi S. Isolation and characterization of Klebsiella oxytoca strain degrading crude oil from a Tunisian off-shore oil field. J Basic Microbiol 2011; 51:580-9. [DOI: 10.1002/jobm.201100073] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Accepted: 04/02/2011] [Indexed: 11/07/2022]
|
49
|
Khanna P, Goyal D, Khanna S. Pyrene Degradation byBacillus pumilusIsolated from Crude Oil Contaminated Soil. Polycycl Aromat Compd 2011. [DOI: 10.1080/10406638.2010.542792] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
50
|
Maity JP, Kar S, Liu JH, Jean JS, Chen CY, Bundschuh J, Santra SC, Liu CC. The potential for reductive mobilization of arsenic [As(V) to As(III)] by OSBH(2) (Pseudomonas stutzeri) and OSBH(5) (Bacillus cereus) in an oil-contaminated site. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2011; 46:1239-1246. [PMID: 21879856 DOI: 10.1080/10934529.2011.598802] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Microbial reduction of arsenate [As(V)] plays an important role in arsenic (As) mobilization in aqueous environments. In this study, we investigated reduction of arsenate by different bacterial isolates such as OSBH(1) (GU329913), OSBH(2) (GU329914), OSBH(3) (GU329915), OSBH(4) (GU329916) and OSBH(5) (GU329917), isolated from the oil sludge of a sewage treatment plant operated by the China Petroleum Refinery Company in Kaohsiung, southern Taiwan. Bacterial strains of pure culture were identified by 16S rRNA analysis (≥99 % nucleotide similarity). Morphological and 16S rRNA analysis show that the isolate OSBH(1) is similar to E. coli, OSBH(2) is similar to P. stutzeri, OSBH(3) is similar to P. putida, OSBH(4) is similar to P. aeruginosa, and OSBH(5) is similar to B. Cereus. The As(V) was transformed to As(III) in the presence of isolates OSBH(2) and OSBH(5) by a detoxification process. The potential reduction rates of As(V) were higher in the presence of isolate OSBH(5) compared to the isolate OSBH(2). The microbial growth (cell/mL) of isolate OSBH(5) was significantly higher in culture medium compared to OSBH(2). The bacterial isolates such as OSBH(1), OSBH(3) and OSBH(4) were found to be incapable of transforming the As(V). It is concluded that the activity of the oil-degrading bacterial isolates described in this work contributes to the mobilization of As in the more toxic As(III) form that affects biotic life.
Collapse
Affiliation(s)
- Jyoti Prakash Maity
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan.
| | | | | | | | | | | | | | | |
Collapse
|