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Naloka K, Kuntaveesuk A, Muangchinda C, Chavanich S, Viyakarn V, Chen B, Pinyakong O. Pseudomonas and Pseudarthrobacter are the key players in synergistic phenanthrene biodegradation at low temperatures. Sci Rep 2024; 14:11976. [PMID: 38796616 PMCID: PMC11127967 DOI: 10.1038/s41598-024-62829-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: 03/01/2024] [Accepted: 05/21/2024] [Indexed: 05/28/2024] Open
Abstract
Hydrocarbon contamination, including contamination with polycyclic aromatic hydrocarbons (PAHs), is a major concern in Antarctica due to the toxicity, recalcitrance and persistence of these compounds. Under the Antarctic Treaty, nonindigenous species are not permitted for use in bioremediation at polluted sites in the Antarctic region. In this study, three bacterial consortia (C13, C15, and C23) were isolated from Antarctic soils for phenanthrene degradation. All isolated bacterial consortia demonstrated phenanthrene degradation percentages ranging from 45 to 85% for 50 mg/L phenanthrene at 15 ℃ within 5 days. Furthermore, consortium C13 exhibited efficient phenanthrene degradation potential across a wide range of environmental conditions, including different temperature (4-30 ℃) and water availability (without polyethylene glycol (PEG) 6000 or 30% PEG 6000 (w/v)) conditions. Sequencing analysis of 16S rRNA genes revealed that Pseudomonas and Pseudarthrobacter were the dominant genera in the phenanthrene-degrading consortia. Moreover, six cultivable strains were isolated from these consortia, comprising four strains of Pseudomonas, one strain of Pseudarthrobacter, and one strain of Paeniglutamicibacter. These isolated strains exhibited the ability to degrade 50 mg/L phenanthrene, with degradation percentages ranging from 4 to 22% at 15 ℃ within 15 days. Additionally, the constructed consortia containing Pseudomonas spp. and Pseudarthrobacter sp. exhibited more effective phenanthrene degradation (43-52%) than did the individual strains. These results provide evidence that Pseudomonas and Pseudarthrobacter can be potential candidates for synergistic phenanthrene degradation at low temperatures. Overall, our study offers valuable information for the bioremediation of PAH contamination in Antarctic environments.
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Affiliation(s)
- Kallayanee Naloka
- Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT), Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Research Program on Remediation Technologies for Petroleum Contamination, Center of Excellence on Hazardous Substance Management (HSM), Bangkok, 10330, Thailand
| | - Aunchisa Kuntaveesuk
- Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT), Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chanokporn Muangchinda
- Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT), Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- International Postgraduate Programs in Hazardous Substance and Environmental Management, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Suchana Chavanich
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Voranop Viyakarn
- Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Aquatic Resources Research Institute, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Bo Chen
- Polar Biological Science Division, Polar Research Institute of China, Shanghai, China
| | - Onruthai Pinyakong
- Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT), Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Research Program on Remediation Technologies for Petroleum Contamination, Center of Excellence on Hazardous Substance Management (HSM), Bangkok, 10330, Thailand.
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Li J, Wen Y, Fang Z, Yang W, Song X. Application of cold-adapted microbial agents in soil contaminate remediation: biodegradation mechanisms, case studies, and safety assessments. RSC Adv 2024; 14:12720-12734. [PMID: 38645519 PMCID: PMC11027001 DOI: 10.1039/d4ra01510j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/11/2024] [Indexed: 04/23/2024] Open
Abstract
The microbial agent technology has made significant progress in remediating nitro-aromatic compounds (NACs), such as p-nitrophenol, 2,4-dinitrophenol, and 2,4,6-Trinitrotoluene, in farmland soil over the past decade. However, there are still gaps in our understanding of the bioavailability and degradation mechanisms of these compounds in low-temperature environments. In this review, we provide a comprehensive summary of the strategies employed by cold-adapted microorganisms and elucidate the degradation pathways of NACs pollutants. To further analyze their metabolic mechanisms, we propose using mass balance to improve our understanding of biochemical processes and refine the degradation pathways through stoichiometry analysis. Additionally, we suggest employing 13C-metabolic flux analysis to track enzyme activity and intermediate products during bio-degradation processes with the aim of accelerating the remediation of nitro-aromatic compounds, particularly in cold regions. Through a comprehensive analysis of pollutant metabolic activities and a commitment to the 'One Health' approach, with an emphasis on selecting non-pathogenic strains, the environmental management strategies for soil remediation could be positioned to develop and implement safe and effective measure.
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Affiliation(s)
- Jiaxin Li
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University Shenyang 110044 China +86(24)62269636
| | - Yujuan Wen
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University Shenyang 110044 China +86(24)62269636
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang University Shenyang 110044 China
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources China
| | - Zheng Fang
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University Shenyang 110044 China +86(24)62269636
| | - Wenqi Yang
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University Shenyang 110044 China +86(24)62269636
| | - Xiaoming Song
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University Shenyang 110044 China +86(24)62269636
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Marietou A, Schmidt JS, Rasmussen MR, Scoma A, Rysgaard S, Vergeynst L. The effect of hydrostatic pressure on the activity and community composition of hydrocarbon-degrading bacteria in Arctic seawater. Appl Environ Microbiol 2023; 89:e0098723. [PMID: 37943057 PMCID: PMC10686064 DOI: 10.1128/aem.00987-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/05/2023] [Indexed: 11/10/2023] Open
Abstract
IMPORTANCE Increased ship traffic in the Arctic region raises the risk of oil spills. With an average sea depth of 1,000 m, there is a growing concern over the potential release of oil sinking in the form of marine oil snow into deep Arctic waters. At increasing depth, the oil-degrading community is exposed to increasing hydrostatic pressure, which can reduce microbial activity. However, microbes thriving in polar regions may adapt to low temperature by modulation of membrane fluidity, which is also a well-known adaptation to high hydrostatic pressure. At mild hydrostatic pressures up to 8-12 MPa, we did not observe an altered microbial activity or community composition, whereas comparable studies using deep-sea or sub-Arctic microbial communities with in situ temperatures of 4-5°C showed pressure-induced effects at 10-15 MPa. Our results suggest that the psychrophilic nature of the underwater microbial communities in the Arctic may be featured by specific traits that enhance their fitness at increasing hydrostatic pressure.
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Affiliation(s)
- Angeliki Marietou
- Department of Biology, Section for Microbiology, Aarhus University, Aarhus, Denmark
- Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark
| | | | - Martin R. Rasmussen
- Department of Biology, Section for Microbiology, Aarhus University, Aarhus, Denmark
| | - Alberto Scoma
- Department of Biology, Section for Microbiology, Aarhus University, Aarhus, Denmark
- Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark
| | - Søren Rysgaard
- Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark
| | - Leendert Vergeynst
- Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark
- Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark
- Centre for Water Technology (WATEC), Aarhus University, Aarhus, Denmark
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4
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Ji M, Smith AF, Rattray JE, England WE, Hubert CRJ. Potential for natural attenuation of crude oil hydrocarbons in benthic microbiomes near coastal communities in Kivalliq, Nunavut, Canada. MARINE POLLUTION BULLETIN 2023; 196:115557. [PMID: 37776739 DOI: 10.1016/j.marpolbul.2023.115557] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 09/04/2023] [Accepted: 09/16/2023] [Indexed: 10/02/2023]
Abstract
Oil spilled in marine environments can settle to the seafloor through aggregation and sedimentation processes. This has been predicted to be especially relevant in the Arctic due to plankton blooms initiated by melting sea ice. These conditions exist in the Kivalliq region in Nunavut, Canada, where elevated shipping traffic has increased the risk of accidental spills. Experimental microcosms combining surface sediment and crude oil were incubated at 4 °C over 21 weeks to evaluate the biodegradation potential of seabed microbiomes. Sediments sampled near the communities of Arviat and Chesterfield Inlet were assessed for biodegradation capabilities by combining hydrocarbon geochemistry with 16S rRNA gene and metagenomic sequencing, revealing decreased microbial diversity but enrichment of oil-degrading taxa. Alkane and aromatic hydrocarbon losses corresponded to detection of genes and genomes that encode enzymes for aerobic biodegradation of these compounds, pointing to the utility of marine microbiome surveys for predicting the fate of oil released into Arctic marine environments.
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Affiliation(s)
- Meng Ji
- Geomicrobiology Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
| | - Alastair F Smith
- Geomicrobiology Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Jayne E Rattray
- Geomicrobiology Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Whitney E England
- Geomicrobiology Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Casey R J Hubert
- Geomicrobiology Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
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Villela H, Modolon F, Schultz J, Delgadillo-Ordoñez N, Carvalho S, Soriano AU, Peixoto RS. Genome analysis of a coral-associated bacterial consortium highlights complementary hydrocarbon degradation ability and other beneficial mechanisms for the host. Sci Rep 2023; 13:12273. [PMID: 37507453 PMCID: PMC10382565 DOI: 10.1038/s41598-023-38512-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/09/2023] [Indexed: 07/30/2023] Open
Abstract
Here we report the oil degradation genetic potential of six oil-degrading bacteria (ODB), previously used as a bioremediation consortium, isolated from the hydrocoral Millepora alcicornis and seawater. The strains were identified as Halomonas sp. (LC_1), Cobetia sp. (LC_6), Pseudoalteromonas shioyasakiensis (LC_2), Halopseudomonas aestusnigri (LC_3), Shewanella algae (LC_4), and Brucella intermedia (LC_5). The taxonomic identification differed from that of the original paper when we used whole genome gene markers instead of just 16S rRNA gene. Genes responsible for the degradation of aromatic hydrocarbons and n-alkanes were found in all genomes, although different (and complementary) steps of the metabolic pathways were unique to each strain. Genes for naphthalene and toluene degradation were found in various strains. We annotated quinate degradation genes in LC_6, while LC_3 and LC_5 presented genes for biosurfactant and rhamnolipid biosynthesis. We also annotated genes related to beneficial mechanisms for corals, such as genes involved in nitrogen and DMSP metabolism, cobalamin biosynthesis and antimicrobial compounds production. Our findings reinforce the importance of using bacterial consortia for bioremediation approaches instead of single strains, due to their complementary genomic arsenals. We also propose a genome-based framework to select complementary ODB that can provide additional benefits to coral health.
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Affiliation(s)
- Helena Villela
- Red Sea Research Center, Biological and Environmental Science and Engineering Division King, Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
- Laboratory of Molecular Microbial Ecology, Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Flúvio Modolon
- Red Sea Research Center, Biological and Environmental Science and Engineering Division King, Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
- Laboratory of Molecular Microbial Ecology, Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Júnia Schultz
- Red Sea Research Center, Biological and Environmental Science and Engineering Division King, Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
- Computational Biology Research Center, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | - Nathalia Delgadillo-Ordoñez
- Red Sea Research Center, Biological and Environmental Science and Engineering Division King, Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | - Susana Carvalho
- Red Sea Research Center, Biological and Environmental Science and Engineering Division King, Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
- Marine Science and Bioscience Programs, Biological, Environmental and Engineering Sciences Division, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | | | - Raquel Silva Peixoto
- Red Sea Research Center, Biological and Environmental Science and Engineering Division King, Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia.
- Computational Biology Research Center, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia.
- Marine Science and Bioscience Programs, Biological, Environmental and Engineering Sciences Division, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia.
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6
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Kampouris ID, Gründger GF, Christensen JH, Greer CW, Kjeldsen KU, Boone W, Meire L, Rysgaard S, Vergeynst L. Long-term patterns of hydrocarbon biodegradation and bacterial community composition in epipelagic and mesopelagic zones of an Arctic fjord. JOURNAL OF HAZARDOUS MATERIALS 2023; 446:130656. [PMID: 36603421 DOI: 10.1016/j.jhazmat.2022.130656] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/14/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Oil spill attenuation in Arctic marine environments depends on oil-degrading bacteria. However, the seasonally harsh conditions in the Arctic such as nutrient limitations and sub-zero temperatures limit the activity even for bacteria capable of hydrocarbon metabolism at low temperatures. Here, we investigated whether the variance between epipelagic (seasonal temperature and inorganic nutrient variations) and mesopelagic zone (stable environmental conditions) could limit the growth of oil-degrading bacteria and lead to lower oil biodegradation rates in the epipelagic than in the mesopelagic zone. Therefore, we deployed absorbents coated with three oil types in a SW-Greenland fjord system at 10-20 m (epipelagic) and 615-650 m (mesopelagic) water depth for one year. During this period we monitored the development and succession of the bacterial biofilms colonizing the oil films by 16S rRNA gene amplicon quantification and sequencing, and the progression of oil biodegradation by gas chromatography - mass spectrometry oil fingerprinting analysis. The removal of hydrocarbons was significantly different, with several polycyclic aromatic hydrocarbons showing longer half-life times in the epipelagic than in the mesopelagic zone. Bacterial community composition and density (16S rRNA genes/ cm2) significantly differed between the two zones, with total bacteria reaching to log-fold higher densities (16S rRNA genes/cm2) in the mesopelagic than epipelagic oil-coated absorbents. Consequently, the environmental conditions in the epipelagic zone limited oil biodegradation performance by limiting bacterial growth.
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Affiliation(s)
- Ioannis D Kampouris
- Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark; Section for Aquatic Biology, Department of Biology, Aarhus University, Aarhus, Denmark.
| | - Grundger Friederike Gründger
- Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark; Section for Aquatic Biology, Department of Biology, Aarhus University, Aarhus, Denmark
| | - Jan H Christensen
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Charles W Greer
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montreal, Canada
| | - Kasper Urup Kjeldsen
- Section for Microbiology, Department of Biology, Aarhus University, Aarhus, Denmark
| | - Wieter Boone
- Flanders Marine Institute, 8400 Oostende, Belgium
| | - Lorenz Meire
- Department of Estuarine and Delta Systems, Royal Netherlands Institute of Sea Research, Yerseke 4401 NT, the Netherlands; Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk 3900, Greenland
| | - Søren Rysgaard
- Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark; Section for Aquatic Biology, Department of Biology, Aarhus University, Aarhus, Denmark; Centre for Earth Observation Science, University of Manitoba, Winnipeg, MB, Canada
| | - Leendert Vergeynst
- Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark; Centre for Water Technology (WATEC), Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark.
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7
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Pyke R, Fortin N, Wasserscheid J, Tremblay J, Schreiber L, Levesque MJ, Messina-Pacheco S, Whyte L, Wang F, Lee K, Cooper D, Greer CW. Biodegradation potential of residue generated during the in-situ burning of oil in the marine environment. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130439. [PMID: 36437193 DOI: 10.1016/j.jhazmat.2022.130439] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
The biodegradability of residues derived from in-situ burning, an oil spill response strategy which involves burning an oil slick on the sea surface, has not yet been fully studied. With a growing risk of oil spills, the fate of the persistent burn residue containing potentially toxic substances must be better understood. Microcosms were used to study the microbial community response and potential biodegradability of in-situ burn residues generated from Ultra Low Sulphur (ULS) marine diesel. Microcosm studies were conducted using residues originating from the burning of unweathered and weathered diesel, with the addition of a fertilizer and a dispersant. Burn residues were incubated for 6 weeks at 7 °C in natural seawater with continual agitation in the dark. Samples were subsequently sacrificed for chemistry as well as 16S rRNA gene amplicon and shotgun metagenomic sequencing. Chemistry analyses revealed a reduction in hydrocarbon concentrations. Medium chain-length n-alkanes (nC16-nC24) decreased by 8% in unweathered burn residue microcosms and up to 26% in weathered burn residue microcosms. A significant decrease in polycyclic aromatic hydrocarbon (PAH) concentrations was observed only for naphthalene, fluorene and their alkylated homologs, in the microcosms amended with residue produced from burning weathered diesel. Decreases of 2-24%, were identified depending on the compound. Microcosms amended with burn residues had distinct microbial communities marked by an increase in relative abundance of putative hydrocarbon degraders as well as an increase of known hydrocarbon-degradation genes. These novel results suggest that if in-situ burning is performed on ULS marine diesel, some of the indigenous bacteria would respond to the newly available carbon source and some of the residual compounds would be biodegraded. Future studies involving longer incubation periods could give a better understanding of the fate of burn residues by shedding light on the potential biodegradability of the more recalcitrant residual compounds.
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Affiliation(s)
- Ruby Pyke
- McGill University, Department of Natural Resource Sciences, Ste-Anne-de-Bellevue, QC, Canada
| | - Nathalie Fortin
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montréal, QC, Canada
| | - Jessica Wasserscheid
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montréal, QC, Canada
| | - Julien Tremblay
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montréal, QC, Canada
| | - Lars Schreiber
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montréal, QC, Canada
| | - Marie-Josee Levesque
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montréal, QC, Canada
| | | | - Lyle Whyte
- McGill University, Department of Natural Resource Sciences, Ste-Anne-de-Bellevue, QC, Canada
| | - Feiyue Wang
- Centre for Earth Observation Science and Department of Environment and Geography, University of Manitoba, Winnipeg, MB, Canada
| | - Kenneth Lee
- Fisheries and Oceans Canada, Ottawa, ON, Canada
| | - David Cooper
- SL Ross Environmental Research Ltd., Ottawa, ON, Canada
| | - Charles W Greer
- McGill University, Department of Natural Resource Sciences, Ste-Anne-de-Bellevue, QC, Canada; National Research Council Canada, Energy, Mining and Environment Research Centre, Montréal, QC, Canada.
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8
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Iriarte J, Dachs J, Casas G, Martínez-Varela A, Berrojalbiz N, Vila-Costa M. Snow-Dependent Biogeochemical Cycling of Polycyclic Aromatic Hydrocarbons at Coastal Antarctica. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:1625-1636. [PMID: 36655903 PMCID: PMC9893724 DOI: 10.1021/acs.est.2c05583] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 05/28/2023]
Abstract
The temporal trend of polycyclic aromatic hydrocarbons (PAHs) in coastal waters with highly dynamic sources and sinks is largely unknown, especially for polar regions. Here, we show the concurrent measurements of 73 individual PAHs and environmental data, including the composition of the bacterial community, during three austral summers at coastal Livingston (2015 and 2018) and Deception (2017) islands (Antarctica). The Livingston 2015 campaign was characterized by a larger snow melting input of PAHs and nutrients. The assessment of PAH diagnostic ratios, such as parent to alkyl-PAHs or LMW to HMW PAHs, showed that there was a larger biodegradation during the Livingston 2015 campaign than in the Deception 2017 and Livingston 2018 campaigns. The biogeochemical cycling, including microbial degradation, was thus yearly dependent on snow-derived inputs of matter, including PAHs, consistent with the microbial community significantly different between the different campaigns. The bivariate correlations between bacterial taxa and PAH concentrations showed that a decrease in PAH concentrations was concurrent with the higher abundance of some bacterial taxa, specifically the order Pseudomonadales in the class Gammaproteobacteria, known facultative hydrocarbonoclastic bacteria previously reported in degradation studies of oil spills. The work shows the potential for elucidation of biogeochemical processes by intensive field-derived time series, even in the harsh and highly variable Antarctic environment.
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Cui Z, Luan X, Li S, Li Y, Bian X, Li G, Wei Q, Ran X, Bao M, Valentine DL. Occurrence and distribution of cyclic-alkane-consuming psychrophilic bacteria in the Yellow Sea and East China Sea. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128129. [PMID: 34991007 DOI: 10.1016/j.jhazmat.2021.128129] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/09/2021] [Accepted: 12/19/2021] [Indexed: 06/14/2023]
Abstract
Cyclic alkanes (c-alkanes) are toxic compounds that are abundant in subsurface oil reservoirs and spilled condensate; hence, their environmental risk is significant. Although numerous studies have focused on the decomposition of other compound classes, e.g., acyclic alkanes and aromatic hydrocarbons, very little is known about the biodegradation of c-alkanes in the marine environment. Here, we enriched methylcyclohexane (MCH)-degrading bacteria derived from the cold bottom water (10-20 °C) of China's marginal seas in summer and characterized the changes to the bacterial community using high-throughput amplicon sequencing. MCH-consuming bacteria failed to grow from the warmer surface water (25-29 °C) in the same geographic sites and seasons. Notably, MCH-consuming communities derived from the cold bottom water in the Yellow Sea exhibit distinct structures compared to the other treatments. Furthermore, almost all dominant species in this setting appear to be specifically adapted to deeper cold water as indicated by significantly negative correlations to temperature (P < 0.01). From these results, we proposed that the biodegradation of MCH is effectively limited to the colder waters (10-20 °C) of China's marginal seas, with uncultured psychrophiles acting as the key taxa for MCH decomposition. Overall, this study indicates key functions for uncultivated microbes in the marine environment.
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Affiliation(s)
- Zhisong Cui
- Marine Bioresources and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources of China, Qingdao 266061, People's Republic of China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, People's Republic of China.
| | - Xiao Luan
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Shujun Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, People's Republic of China
| | - Yingchao Li
- Marine Bioresources and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources of China, Qingdao 266061, People's Republic of China
| | - Xinqi Bian
- Marine Bioresources and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources of China, Qingdao 266061, People's Republic of China
| | - Guoqing Li
- Marine Bioresources and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources of China, Qingdao 266061, People's Republic of China
| | - Qinsheng Wei
- Marine Bioresources and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources of China, Qingdao 266061, People's Republic of China
| | - Xiangbin Ran
- Marine Bioresources and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources of China, Qingdao 266061, People's Republic of China
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, People's Republic of China
| | - David L Valentine
- Department of Earth Science and Marine Science Institute, University of California, Santa Barbara, CA 93106, USA.
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10
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Péquin B, Cai Q, Lee K, Greer CW. Natural attenuation of oil in marine environments: A review. MARINE POLLUTION BULLETIN 2022; 176:113464. [PMID: 35231783 DOI: 10.1016/j.marpolbul.2022.113464] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 01/31/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
Natural attenuation is an important process for oil spill management in marine environments. Natural attenuation affects the fate of oil by physical, chemical, and biological processes, which include evaporation, dispersion, dissolution, photo-oxidation, emulsification, oil particle aggregation, and biodegradation. This review examines the cumulative knowledge regarding these natural attenuation processes as well as their simulation and prediction using modelling approaches. An in-depth discussion is provided on how oil type, microbial community and environmental factors contribute to the biodegradation process. It describes how our understanding of the structure and function of indigenous oil degrading microbial communities in the marine environment has been advanced by the application of next generation sequencing tools. The synergetic and/or antagonist effects of oil spill countermeasures such as the application of chemical dispersants, in-situ burning and nutrient enrichment on natural attenuation were explored. Several knowledge gaps were identified regarding the synergetic and/or antagonistic effects of active response countermeasures on the natural attenuation/biodegradation process. This review highlighted the need for field data on both the effectiveness and potential detrimental effects of oil spill response options to support modelling and decision-making on their selection and application.
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Affiliation(s)
- Bérangère Péquin
- McGill University, Department of Natural Resource Sciences, Ste-Anne-de-Bellevue, Quebec, Canada.
| | - Qinhong Cai
- McGill University, Department of Natural Resource Sciences, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Kenneth Lee
- Ecosystem Science, Fisheries and Oceans Canada, Ottawa, Ontario, Canada
| | - Charles W Greer
- McGill University, Department of Natural Resource Sciences, Ste-Anne-de-Bellevue, Quebec, Canada; Energy, Mining and Environment Research Centre, National Research Council Canada, Montreal, Quebec, Canada
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11
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Desmond DS, Crabeck O, Lemes M, Harasyn ML, Mansoori A, Saltymakova D, Fuller MC, Rysgaard S, Barber DG, Isleifson D, Stern GA. Investigation into the geometry and distribution of oil inclusions in sea ice using non-destructive X-ray microtomography and its implications for remote sensing and mitigation potential. MARINE POLLUTION BULLETIN 2021; 173:112996. [PMID: 34627034 DOI: 10.1016/j.marpolbul.2021.112996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/21/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
As climate change brings reduced sea ice cover and longer ice-free summers to the Arctic, northern Canada is experiencing an increase in shipping and industrial activity in this sensitive region. Disappearing sea ice, therefore, makes the Arctic region susceptible to accidental releases of different types of oil and fuel pollution resulting in a pressing need for the development of appropriate scientific knowledge necessary to inform regulatory policy formulation. In this study, we examine the microstructure of the surficial layers of sea ice exposed to oil using X-ray microtomography. Through analysis, 3D imaging of the spatial distribution of the ice's components (brine, air, and oil) were made. Additional quantitative information regarding the size, proximity, orientation, and geometry of oil inclusions were computed to ascertain discernable relationships between oil and the other components of the ice. Our results indicate implications for airborne remote sensing and bioremediation of the upper sea ice layers.
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Affiliation(s)
| | - Odile Crabeck
- University of East Anglia, Norwich, United Kingdom; Laboratoire de Glaciologie, Université Libre de Bruxelles, Bruxelles, Belgium; Unité d'Océanographie Chimique, Freshwater and Oceanic sCience Unit reSearch (FOCUS), Université de Liège, Liège, Belgium
| | | | | | | | | | - M Christopher Fuller
- University of Manitoba, Winnipeg, MB, Canada; University of Calgary, Calgary, AB, Canada
| | - Søren Rysgaard
- University of Manitoba, Winnipeg, MB, Canada; Aarhus University, Aarhus, Denmark
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12
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Lofthus S, Bakke I, Greer CW, Brakstad OG. Biodegradation of weathered crude oil by microbial communities in solid and melted sea ice. MARINE POLLUTION BULLETIN 2021; 172:112823. [PMID: 34454387 DOI: 10.1016/j.marpolbul.2021.112823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Oil spilled in the Arctic may drift into ice-covered areas and become trapped until the ice melts. To determine if exposure to oil during freezing may have a priming effect on degradation of the oil, weathered dispersed oil (2-3 mg/L) was frozen into solid ice for 200 days at -10 °C, then melted and incubated for 64 days at 4 °C. No degradation was measured in oil frozen into ice prior to melting. Both total amount of oil and target compounds were biotransformed by the microbial community from the melted ice. However, oil released from melted ice was degraded at a slower rate than oil incubated in fresh seawater at the same temperature (4 °C), and by a different microbial community. These data suggest negligible biodegradation of oil frozen in sea ice, while oil-degrading bacteria surviving in the ice may contribute to biodegradation when the ice melts.
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Affiliation(s)
- Synnøve Lofthus
- Norwegian University of Science and Technology, Department of Biotechnology and Food Science, Trondheim, Norway; SINTEF Ocean AS, Climate and Environment, Trondheim, Norway.
| | - Ingrid Bakke
- Norwegian University of Science and Technology, Department of Biotechnology and Food Science, Trondheim, Norway
| | - Charles W Greer
- National Research Council Canada, Energy, Mining and Environment Centre, Montreal, Quebec, Canada
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13
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Martinez-Varela A, Cerro-Gálvez E, Auladell A, Sharma S, Moran MA, Kiene RP, Piña B, Dachs J, Vila-Costa M. Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean. Environ Microbiol 2021; 23:4532-4546. [PMID: 34169620 DOI: 10.1111/1462-2920.15646] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 06/16/2021] [Indexed: 12/13/2022]
Abstract
Thousands of man-made synthetic chemicals are released to oceans and compose the anthropogenic dissolved organic carbon (ADOC). Little is known about the effects of this chronic pollution on marine microbiome activities. In this study, we measured the pollution level at three sites in the Northeast Subarctic Pacific Ocean (NESAP) and investigated how mixtures of three model families of ADOC at different environmentally relevant concentrations affected naturally occurring marine bacterioplankton communities' structure and metabolic functioning. The offshore northernmost site (North) had the lowest concentrations of hydrocarbons, as well as organophosphate ester plasticizers, contrasting with the two other continental shelf sites, the southern coastal site (South) being the most contaminated. At North, ADOC stimulated bacterial growth and promoted an increase in the contribution of some Gammaproteobacteria groups (e.g. Alteromonadales) to the 16 rRNA pool. These groups are described as fast responders after oil spills. In contrast, minor changes in South microbiome activities were observed. Gene expression profiles at Central showed the coexistence of ADOC degradation and stress-response strategies to cope with ADOC toxicities. These results show that marine microbial communities at three distinct domains in NESAP are influenced by background concentrations of ADOC, expanding previous assessments for polar and temperate waters.
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Affiliation(s)
- Alícia Martinez-Varela
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Elena Cerro-Gálvez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Adrià Auladell
- Department of Marine Biology and Oceanography, Marine Science Institute, ICM-CSIC, Barcelona, Catalunya, Spain
| | - Shalabh Sharma
- Department of Marine Sciences, University of Georgia, Marine Sciences Building, Athens, GA, USA
| | - Mary Ann Moran
- Department of Marine Sciences, University of Georgia, Marine Sciences Building, Athens, GA, USA
| | - Ronald P Kiene
- Department of Marine Sciences, University of South Alabama, Mobile, AL, USA
| | - Benjamí Piña
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
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14
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Verasoundarapandian G, Wong CY, Shaharuddin NA, Gomez-Fuentes C, Zulkharnain A, Ahmad SA. A Review and Bibliometric Analysis on Applications of Microbial Degradation of Hydrocarbon Contaminants in Arctic Marine Environment at Metagenomic and Enzymatic Levels. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041671. [PMID: 33572432 PMCID: PMC7916232 DOI: 10.3390/ijerph18041671] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/20/2022]
Abstract
The globe is presently reliant on natural resources, fossil fuels, and crude oil to support the world’s energy requirements. Human exploration for oil resources is always associated with irreversible effects. Primary sources of hydrocarbon pollution are instigated through oil exploration, extraction, and transportation in the Arctic region. To address the state of pollution, it is necessary to understand the mechanisms and processes of the bioremediation of hydrocarbons. The application of various microbial communities originated from the Arctic can provide a better interpretation on the mechanisms of specific microbes in the biodegradation process. The composition of oil and consequences of hydrocarbon pollutants to the various marine environments are also discussed in this paper. An overview of emerging trends on literature or research publications published in the last decade was compiled via bibliometric analysis in relation to the topic of interest, which is the microbial community present in the Arctic and Antarctic marine environments. This review also presents the hydrocarbon-degrading microbial community present in the Arctic, biodegradation metabolic pathways (enzymatic level), and capacity of microbial degradation from the perspective of metagenomics. The limitations are stated and recommendations are proposed for future research prospects on biodegradation of oil contaminants by microbial community at the low temperature regions of the Arctic.
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Affiliation(s)
| | - Chiew-Yen Wong
- School of Health Sciences, International Medical University, Kuala Lumpur 57000, Malaysia;
- National Antarctic Research Center, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Noor Azmi Shaharuddin
- Department of Biochemistry, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (G.V.); (N.A.S.)
| | - Claudio Gomez-Fuentes
- Department of Chemical Engineering, Universidad de Magallanes, Avda. Bulnes 01855, Punta Arenas, Chile;
- Center for Research and Antarctic Environmental Monitoring (CIMAA), Universidad de Magallanes, Avda. Bulnes 01855, Punta Arenas, Chile
| | - Azham Zulkharnain
- Department of Bioscience and Engineering, Shibaura Institute of Technology, Saitama-shi 337-8570, Saitama, Japan;
| | - Siti Aqlima Ahmad
- Department of Biochemistry, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (G.V.); (N.A.S.)
- National Antarctic Research Center, Universiti Malaya, Kuala Lumpur 50603, Malaysia
- Center for Research and Antarctic Environmental Monitoring (CIMAA), Universidad de Magallanes, Avda. Bulnes 01855, Punta Arenas, Chile
- Correspondence:
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15
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Barbato M, Scoma A. Mild hydrostatic-pressure (15 MPa) affects the assembly, but not the growth, of oil-degrading coastal microbial communities tested under limiting conditions (5°C, no added nutrients). FEMS Microbiol Ecol 2020; 96:5894919. [PMID: 32816016 DOI: 10.1093/femsec/fiaa160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/11/2020] [Indexed: 02/06/2023] Open
Abstract
Hydrostatic pressures (HP) <30-40 MPa are often considered mild, and their impact on petroleum biodegradation seldom considered. However, the frequent use of nutrient-rich media in lab-scale high-pressure reactors may exaggerate HP importance by resulting in a strong growth stimulation as compared to oligotrophic marine environments. Here, we tested coastal seawater microbial communities, presumably enriched in pressure-sensitive microorganisms. Limiting environmental conditions for growth were applied (i.e. low temperature [5°C], no added nutrients) and HP tested at 0.1 and 15 MPa, using crude oils from three different reservoirs. The cell number was not affected by HP contrary to the microbial community composition (based on 16S rRNA gene and 16S rRNA sequences). The most predominant genera were Zhongshania, Pseudomonas and Colwellia. The enrichment of Zhongshania was crude-oil dependent and comparable at 0.1 and 15 MPa, thus showing a piezotolerant phenotype under the present conditions; Pseudomonas' was crude-oil dependent at 0.1 MPa but unclear at 15 MPa. Colwellia was selectively enriched in the absence of crude oil and suppressed at 15 MPa. HP shaped the assemblage of oil-degrading communities even at mild levels (i.e. 15 MPa), and should thus be considered as a fundamental factor to assess oil bioremediation along the water column.
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Affiliation(s)
- Marta Barbato
- Department of Biology, Aarhus University, Ny munkegade 116, 8000, Aarhus C, Denmark.,Biological and Chemical Engineering Section (BCE), Department of Engineering, Aarhus University, Hangøvej 2, 8200, Aarhus N, Denmark
| | - Alberto Scoma
- Department of Biology, Aarhus University, Ny munkegade 116, 8000, Aarhus C, Denmark.,Biological and Chemical Engineering Section (BCE), Department of Engineering, Aarhus University, Hangøvej 2, 8200, Aarhus N, Denmark
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16
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Assessment of the Lowland Bog Biomass for Ex Situ Remediation of Petroleum-Contaminated Soils. ENVIRONMENTS 2020. [DOI: 10.3390/environments7100086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bog petroleum-contaminated soils have been remediated ex situ in conditions close to natural ones. It was found that during the first 30 days in natural conditions, the decomposition of total petroleum hydrocarbons (TPH) was 30 ± 5%. On the 60th and 90th days, the process of TPH decomposition was 45 ± 5% and 60 ± 5%, respectively. The effect of various stimulant supplements was negligible. For the entire observed period, bog soil showed a very high self-cleaning potential with pollution concentration of 5 g of petroleum per 100 g of soil sample. Such diagnostic indicators of soil condition as urease and cellulase activities turned out to be most sensitive in the bog soil. The introduction of mineral fertilizers to stimulate the TPH decomposition increased the activity of urease in comparison with the background soil. On the other hand, the nonionic surfactant acted as an inhibitor of microorganisms involved in nitrogen metabolism, even in the presence of mineral fertilizers. The introduction of mineral fertilizers to petroleum-polluted bog soil stimulated the cellulases activity, while surfactants suppressed them in the early stages. The simultaneous introduction of surfactants and fertilizers kept the cellulase activity at the background level. It is concluded that in the case of petroleum pollution of infertile soils, the introduction of the upper layers of the phytomass of lowland bogs by providing looseness and long-term supply of nutrients from the dying parts of the moss will accelerate the self-cleaning processes.
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17
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Jin M, Yu X, Yao Z, Tao P, Li G, Yu X, Zhao JL, Peng J. How biofilms affect the uptake and fate of hydrophobic organic compounds (HOCs) in microplastic: Insights from an In situ study of Xiangshan Bay, China. WATER RESEARCH 2020; 184:116118. [PMID: 32731037 DOI: 10.1016/j.watres.2020.116118] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/21/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
Microplastic (MP) has been identified as an emerging vector that transports hydrophobic organic compounds (HOCs) across aquatic environments due to its hydrophobic surfaces and small size. However, it is also recognized that environmental factors affect MP's chemical vector effects and that attached biofilms could play a major role, although the specific mechanisms remain unclear. To explore this issue, an in situ experiment was conducted at Xiangshan Bay of southeastern China, and dynamics of HOCs (i.e., polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs)) and bacterial communities related to the model MP (i.e., PE fibers) were analyzed and compared. Through bacterial characterizations including the 16S rRNA approach, higher summer temperatures (31.4 ± 1.07 °C) were found to promote colonizing bacterial assemblages with larger biomasses, higher activity and more degrading bacteria than winter temperatures (13.3 ± 2.49 °C). Consequently, some sorbed pollutants underwent significant decline in the summer, and this decline was particularly the case for PAHs with low (2-3 rings) and median (4 rings) molecular weights such as phenanthrene (59.4 ± 1.6%), chrysene (70.6 ± 4.2%), fluoranthene (77.1 ± 13.3%) and benz[a]anthracene (71.5 ± 11.0%). In our winter test, however, most pollutants underwent a consistent increase throughout the 8-week exposure period. Moreover, more biorefractory pollutants including PCBs and high molecular weight (5-6 rings) PAHs accumulated regardless of bacterial characteristics. Two putative PAH-degrading bacteria appeared with high relative abundances during the summer test, i.e., family Rhodobacteraceae (18.6 ± 0.5%) and genus Sphingomicrobium (22.4 ± 3.6%), associated with drastic decreases in low (45.2 ± 0.4%) and median (66.0 ± 2.5%) molecular weight PAHs, respectively. Bacterial degradation effects of biofilms on PAHs are also supported by the correlative dynamics of salicylic acid, an important degradation intermediate of PAHs. The results of this study indicate that MP's HOC vector effects are essentially determined by interactions between attached pollutants and microbial assemblages, which are further related to bacterial activity and pollutant features. Further studies of biofilm effects on MP toxicity and on the metabolic pathways of MP-attached HOCs are required.
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Affiliation(s)
- Meng Jin
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Xubiao Yu
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, PR China.
| | - Zhiyuan Yao
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Peiran Tao
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Gang Li
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Xinwei Yu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, 316021, PR China
| | - Jian-Liang Zhao
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, School of Environment, South China Normal University, Guangzhou, 510006, PR China
| | - Jinping Peng
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China
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18
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Lofthus S, Bakke I, Tremblay J, Greer CW, Brakstad OG. Biodegradation of weathered crude oil in seawater with frazil ice. MARINE POLLUTION BULLETIN 2020; 154:111090. [PMID: 32319919 DOI: 10.1016/j.marpolbul.2020.111090] [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: 10/16/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 06/11/2023]
Abstract
As ice extent in the Arctic is declining, oil and gas activities will increase, with higher risk of oil spills to the marine environment. To determine biotransformation of dispersed weathered oil in newly formed ice, oil dispersions (2-3 ppm) were incubated in a mixture of natural seawater and frazil ice for 125 days at -2 °C. Dispersed oil in seawater without frazil ice were included in the experimental setup. Presence or absence of frazil ice was a strong driver for microbial community structures and affected the rate of oil degradation. n-alkanes were degraded faster in the presence of frazil ice, the opposite was the case for naphthalenes and 2-3 ring PAHs. No degradation of 4-6 ring PAHs was observed in any of the treatments. The total petroleum oil was not degraded to any significant degree, suggesting that oil will freeze into the ice matrix and persist throughout the icy season.
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Affiliation(s)
- Synnøve Lofthus
- Norwegian University of Science and Technology, Department of Biotechnology and Food Science, Trondheim, Norway; SINTEF Ocean AS, Environment and New Resources, Trondheim, Norway.
| | - Ingrid Bakke
- Norwegian University of Science and Technology, Department of Biotechnology and Food Science, Trondheim, Norway
| | - Julien Tremblay
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montreal, Quebec, Canada
| | - Charles W Greer
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montreal, Quebec, Canada
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19
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Vergeynst L, Greer CW, Mosbech A, Gustavson K, Meire L, Poulsen KG, Christensen JH. Biodegradation, Photo-oxidation, and Dissolution of Petroleum Compounds in an Arctic Fjord during Summer. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:12197-12206. [PMID: 31566367 DOI: 10.1021/acs.est.9b03336] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Increased economic activity in the Arctic may increase the risk of oil spills. Yet, little is known about the degradation of oil spills by solar radiation and the impact of nutrient limitation on oil biodegradation under Arctic conditions. We deployed adsorbents coated with thin oil films for up to 4 months in a fjord in SW Greenland to simulate and investigate in situ biodegradation and photo-oxidation of dispersed oil droplets. Oil compound depletion by dissolution, biodegradation, and photo-oxidation was untangled by gas chromatography-mass spectrometry-based oil fingerprinting. Biodegradation was limited by low nutrient concentrations, reaching 97% removal of nC13-26-alkanes only after 112 days. Sequencing of bacterial DNA showed the slow development of a bacterial biofilm on the oil films predominated by the known oil degrading bacteria Oleispira, Alkanindiges and Cycloclasticus. These taxa could be related to biodegradation of shorter-chain (≤C26) alkanes, longer-chain (≥C16) and branched alkanes, and polycyclic aromatic compounds (PACs), respectively. The combination of biodegradation, dissolution, and photo-oxidation depleted most PACs at substantially faster rates than the biodegradation of alkanes. In Arctic fjords during summer, nutrient limitation may severely delay oil biodegradation, but in the photic zone, photolytic transformation of PACs may play an important role.
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Affiliation(s)
| | - Charles W Greer
- National Research Council Canada , Montreal H4P 2R2 , Quebec , Canada
| | | | | | - Lorenz Meire
- Greenland Climate Research Centre , Greenland Institute of Natural Resources , Nuuk 3900 , Greenland
- Department of Estuarine and Delta Systems, Royal Netherlands Institute of Sea Research , Utrecht University , Yerseke 4401 NT , The Netherlands
| | - Kristoffer G Poulsen
- Department of Plant and Environmental Sciences, Faculty of Science , University of Copenhagen , Copenhagen 1871 , Denmark
| | - Jan H Christensen
- Department of Plant and Environmental Sciences, Faculty of Science , University of Copenhagen , Copenhagen 1871 , Denmark
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20
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Meng L, Li W, Bao M, Sun P. Great correlation: Biodegradation and chemotactic adsorption of Pseudomonas synxantha LSH-7' for oil contaminated seawater bioremediation. WATER RESEARCH 2019; 153:160-168. [PMID: 30711791 DOI: 10.1016/j.watres.2019.01.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 11/19/2018] [Accepted: 01/20/2019] [Indexed: 06/09/2023]
Abstract
Oil Contaminated Seawaters is treated by biological processes of sorption or degradation. Considering the chemotaxis of bacteria, they migrate towards a better way to survive. However, the information concerning the chemotactic biosorption of microorganism is severely limited thus far. Therefore, chemotactic biosorption a novel way of sorption was put forward. The equation was defined as: A chemotactic biosorption = A extracellular biosorption - A passive extracellular biosorption + E intracellular. Effects of controlling parameters like pollutant, fertilizer, sediments and surfactant on bacterial chemotactic sorption capacity of tetradecane, hexadecane, phenanthrene or pyrene were described in detail. The results showed bacterial chemotactic biosorption would be promoted under the conditions of low pollutant concentration, high sediment concentration and fertilizer. However, Tween 80 would promote the sorption of pollutants onto bacterial cells depending on the concentration of surfactant. Correlational analyses were conducted with the biodegradation rate and the concentration (mg/g) of hydrocarbons measured in the biomass. We concluded there existed great correlation between them. Biodegradation rate were all linearly correlated with the concentration (mg/g) of hydrocarbons measured in the biomass in all respects with tetradecane (R2 = 0.9873), hexadecane (R2 = 0.9705), phenanthrene (R2 = 0.9098) and pyrene (R2 = 0.9424). The above idea may provide a new insight into oil spill bioremediation from sorption to degradation.
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Affiliation(s)
- Long Meng
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / Institute for Advanced Ocean Study, Ocean University of China, Qingdao, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, China
| | - Wen Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / Institute for Advanced Ocean Study, Ocean University of China, Qingdao, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, China
| | - Mutai Bao
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / Institute for Advanced Ocean Study, Ocean University of China, Qingdao, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, China.
| | - Peiyan Sun
- Key Laboratory of Marine Spill Oil Identification and Damage Assessment Technology, North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao, China
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21
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Hammershøj R, Birch H, Redman AD, Mayer P. Mixture Effects on Biodegradation Kinetics of Hydrocarbons in Surface Water: Increasing Concentrations Inhibited Degradation whereas Multiple Substrates Did Not. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:3087-3094. [PMID: 30801186 DOI: 10.1021/acs.est.9b00638] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Most biodegradation tests are conducted using single chemicals at high concentrations, although these chemicals are present in the environment as mixtures at low concentrations. A partitioning-based platform was recently developed for biodegradation testing of composed mixtures of hydrophobic chemicals at ng/L to μg/L concentrations. We used this platform to study the concentration and mixture effect on biodegradation kinetics. Biodegradation tests were conducted in 20 mL vials using environmental water samples as inocula. Passive dosing was applied (1) to vary initial test concentrations of individual test compounds and (2) to vary the number of mixture components between 1 and 16. Automated solid-phase microextraction coupled to gas chromatography-mass spectrometry was used to measure substrate depletion relative to abiotic controls. The number of mixture components had no or only a limited effect on the biodegradation half times for three compounds when tested at environmentally relevant concentrations. In contrast, longer lag phases and half lives were observed for single compounds when tested at higher concentrations that approached aqueous solubility. The obtained results support that simultaneous testing of multiple chemicals at low concentrations can accelerate the generation of biodegradation kinetic data, which are more environmentally relevant compared with data from tests conducted with single chemicals at much higher concentrations.
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Affiliation(s)
- Rikke Hammershøj
- Technical University of Denmark , Department of Environmental Engineering , Bygningstorvet, Building 115 , 2800 Kgs. Lyngby , Denmark
| | - Heidi Birch
- Technical University of Denmark , Department of Environmental Engineering , Bygningstorvet, Building 115 , 2800 Kgs. Lyngby , Denmark
| | - Aaron D Redman
- ExxonMobil Biomedical Science, Inc. , Annandale , New Jersey 08801 , United States
| | - Philipp Mayer
- Technical University of Denmark , Department of Environmental Engineering , Bygningstorvet, Building 115 , 2800 Kgs. Lyngby , Denmark
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