Microbial degradation of petroleum hydrocarbons

Bioresource Technology, Год журнала: 2016, Номер 223, С. 277 - 286

Опубликована: Окт. 19, 2016

Язык: Английский

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Anaerobic Microbial Degradation of Hydrocarbons: From Enzymatic Reactions to the Environment

Microbial Physiology, Год журнала: 2016, Номер 26(1-3), С. 5 - 28

Опубликована: Янв. 1, 2016

Hydrocarbons are abundant in anoxic environments and pose biochemical challenges to their anaerobic degradation by microorganisms. Within the framework of Priority Program 1319, investigations funded Deutsche Forschungsgemeinschaft on microbial hydrocarbons ranged from isolation enrichment hitherto unknown hydrocarbon-degrading microorganisms, discovery novel reactions, detailed studies enzyme mechanisms structures process-oriented situ studies. Selected highlights this program collected synopsis, with more information provided theme-focused reviews special topic issue ‘Anaerobic biodegradation hydrocarbons' [this issue, pp. 1-244]. The interdisciplinary character program, involving microbiologists, biochemists, organic chemists environmental scientists, is best exemplified alkyl-/arylalkylsuccinate synthases. Here, research topics in-depth mechanistic archetypical toluene-activating benzylsuccinate synthase, substrate-specific phylogenetic clustering synthases (toluene plus xylenes, p-cymene, p-cresol, 2-methylnaphthalene, n-alkanes), stereochemical co-metabolic insights into n-alkane-activating (methylalkyl)succinate bacterial groups previously possess means functional gene markers field enabled state-of-the-art stable isotope probing fractionation approaches. Other Mo-cofactor-dependent dehydrogenases performing O2-independent hydroxylation alkyl side chains (ethylbenzene, cholesterol, n-hexadecane), p-alkylated benzoates toluenes, glycyl radical-bearing 4-hydroxyphenylacetate decarboxylase, types carboxylation reactions (for acetophenone, acetone, potentially also benzene naphthalene), W-cofactor-containing enzymes for reductive dearomatization benzoyl-CoA (class II reductase) obligate anaerobes addition water acetylene, fermentative formation cyclohexanecarboxylate benzoate, methanogenic hydrocarbons.

Язык: Английский

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A new look on factors affecting microbial degradation of petroleum hydrocarbon pollutants

International Biodeterioration & Biodegradation, Год журнала: 2017, Номер 120, С. 71 - 83

Опубликована: Фев. 16, 2017

Язык: Английский

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A benzene-degrading nitrate-reducing microbial consortium displays aerobic and anaerobic benzene degradation pathways

Scientific Reports, Год журнала: 2018, Номер 8(1)

Опубликована: Март 8, 2018

In this study, we report transcription of genes involved in aerobic and anaerobic benzene degradation pathways a benzene-degrading denitrifying continuous culture. Transcripts associated with the family Peptococcaceae dominated all samples (21-36% relative abundance) indicating their key role community. We found highly transcribed gene cluster encoding presumed carboxylase (AbcA AbcD) benzoate-coenzyme A ligase (BzlA). Predicted products showed >96% amino acid identity similar order to corresponding described previously, providing further evidence for activation via carboxylation. For subsequent benzoyl-CoA dearomatization, bam-like analogous ones other strict anaerobes were transcribed, whereas transcripts downstream mostly facultative anaerobes. The concurrent enzymes oxygenase-mediated suggested oxygen presence culture, possibly formed recently identified nitric oxide dismutase (Nod). Although unable detect Nod-encoding genes, addition nitrite formate culture indication production. Such an production would enable microbes thrive oxygen-depleted nitrate-containing subsurface environments contaminated hydrocarbons.

Язык: Английский

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Biodegradation of petroleum hydrocarbons by oleophilic strain of Pseudomonas aeruginosa NCIM 5514

Bioresource Technology, Год журнала: 2016, Номер 222, С. 195 - 201

Опубликована: Окт. 6, 2016

Язык: Английский

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Comprehensive review on toxicity of persistent organic pollutants from petroleum refinery waste and their degradation by microorganisms

Chemosphere, Год журнала: 2017, Номер 188, С. 280 - 291

Опубликована: Сен. 4, 2017

Язык: Английский

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Role of environmental factors and microorganisms in determining the fate of polycyclic aromatic hydrocarbons in the marine environment

FEMS Microbiology Reviews, Год журнала: 2016, Номер 40(6), С. 814 - 830

Опубликована: Авг. 12, 2016

Polycyclic aromatic hydrocarbons (PAHs) are widespread in marine ecosystems and originate from natural sources anthropogenic activities. PAHs enter the environment two main ways, corresponding to chronic pollution or acute by oil spills. The global PAH fluxes environments controlled microbial degradation biological pump, which plays a role particle settling sequestration through bioaccumulation. Due their low water solubility hydrophobic nature, tightly adhere sediments leading accumulation coastal deep sediments. Microbial assemblages play an important determining fate of sediments, supporting functioning biogeochemical cycles loop. This review summarises knowledge recently acquired terms both pollution. importance ecology PAH-polluted is highlighted as well gaining further in-depth environmental services provided microorganisms.

Язык: Английский

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Metabolic potential of uncultured bacteria and archaea associated with petroleum seepage in deep-sea sediments

Nature Communications, Год журнала: 2019, Номер 10(1)

Опубликована: Апрель 18, 2019

Abstract The lack of microbial genomes and isolates from the deep seabed means that very little is known about ecology this vast habitat. Here, we investigate energy carbon acquisition strategies communities three petroleum seeps (3 km water depth) in Eastern Gulf Mexico. Shotgun metagenomic analysis reveals each sediment harbors diverse chemoheterotrophs chemolithotrophs. We recovered 82 metagenome-assembled affiliated with 21 different archaeal bacterial phyla. Multiple encode enzymes for anaerobic oxidation aliphatic aromatic compounds, including those candidate phyla Aerophobetes, Aminicenantes, TA06 Bathyarchaeota. Microbial interactions are predicted to be driven by acetate molecular hydrogen. These findings supported geochemistry, metabolomics, thermodynamic modelling. Overall, infer deep-sea sediments experiencing thermogenic hydrocarbon inputs harbor phylogenetically functionally potentially sustained through hydrocarbon, hydrogen metabolism.

Язык: Английский

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Enzymatic Conversion of CO₂: From Natural to Artificial Utilization

Chemical Reviews, Год журнала: 2023, Номер 123(9), С. 5702 - 5754

Опубликована: Янв. 24, 2023

Enzymatic carbon dioxide fixation is one of the most important metabolic reactions as it allows capture inorganic from atmosphere and its conversion into organic biomass. However, due to often unfavorable thermodynamics difficulties associated with utilization CO

Язык: Английский

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Environmental health and risk assessment metrics with special mention to biotransfer, bioaccumulation and biomagnification of environmental pollutants

Chemosphere, Год журнала: 2022, Номер 302, С. 134836 - 134836

Опубликована: Май 4, 2022

Язык: Английский

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