Prokaryotic Hydrocarbon Degraders

Prince, Roger C.; Amande, Tivkaa Joseph; McGenity, Terry J.

doi:10.1007/978-3-319-60053-6_15-1

Cited by 53 publications

(51 citation statements)

References 318 publications

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“…This bloom included abundant populations of alkane‐degrading bacteria from the order Oceanospirillales and obligate PAH degraders of the genus Cycloclasticus (Kappell et al 2014; Hazen et al ; Baelum et al ; Mason et al ; Dubinsky et al ; Rivers et al ; Joye et al ). Other microbial groups found in the post‐spill community included various members of the metabolically versatile Roseobacter clade as well as moderately psychrophilic members of Colwellia with the ability to degrade a wide range of hydrocarbon compounds (Prince et al ; Redmond and Valentine ; Arnosti et al ; Yang et al ). Archaeal communities were dominated by Euryarchaeota or Thaumarchaeota consistent with non‐spill conditions, but the relationships between archaea and oil remain difficult to resolve and require further study (Redmond and Valentine ).…”

Section: Background On the Study Of Marine Snow And Oil Spillsmentioning

confidence: 99%

“…The abundant, large (mm to cm), mucus‐rich marine snow which appeared near the surface in the weeks after the DwH spill was produced by the microbial community in response to the released petrocarbons and hydrocarbons (Passow et al ; Gutierrez et al 2013; Ziervogel and Arnosti ). While some phytoplankton species are negatively impacted (e.g., Prouse et al ; González et al ; Hook and Osborn ; Ozhan et al ; Garr et al 2015) others appear to thrive in the presence of oil (Prince et al ; Almeda et al ; Ozhan and Bargu ; Ozhan et al ), although it is unclear if phytoplankton benefit directly from oil, or via a symbiotic relationship with prokaryotes. Oil compounds may enter the food chain through bacteria (Graham et al ; Chanton et al ).…”

Section: Background On the Study Of Marine Snow And Oil Spillsmentioning

confidence: 99%

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The role of microbial exopolymers in determining the fate of oil and chemical dispersants in the ocean

Quigg

Passow

Chin

et al. 2016

Limnol Oceanogr Letters

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The production of extracellular polymeric substances (EPS) by planktonic microbes can influence the fate of oil and chemical dispersants in the ocean through emulsification, degradation, dispersion, aggregation, and/or sedimentation. In turn, microbial community structure and function, including the production and character of EPS, is influenced by the concentration and chemical composition of oil and chemical dispersants. For example, the production of marine oil snow and its sedimentation and flocculent accumulation to the seafloor were observed on an expansive scale after the Deepwater Horizon oil spill in the Northern Gulf of Mexico in 2010, but little is known about the underlying control of these processes. Here, we review what we do know about microbially produced EPS, how oil and chemical dispersant can influence the production rate and chemical and physical properties of EPS, and ultimately the fate of oil in the water column. To improve our response to future oil spills, we need a better understanding of the biological and physiochemical controls of EPS production by microbes under a range of environmental conditions, and in this paper, we provide the key knowledge gaps that need to be filled to do so. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Scientific Significance StatementExtracellular polymeric substances (EPS) are a group of chemically heterogeneous polymers released into the environment by microbes (bacteria, archaea, and phytoplankton), often in response to environmental stresses. EPS serve an important role in determining the fate and transport of oil after a spill, but relatively little is known about EPS production in relation to oil and dispersants, especially at molecular and chemical levels. Here, we summarize the scope of our current knowledge and identify major knowledge gaps. 3Limnology and Oceanography Letters 1, 2016, 3-26

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Section: Background On the Study Of Marine Snow And Oil Spillsmentioning

confidence: 99%

Section: Background On the Study Of Marine Snow And Oil Spillsmentioning

confidence: 99%

The role of microbial exopolymers in determining the fate of oil and chemical dispersants in the ocean

Quigg

Passow

Chin

et al. 2016

Limnol Oceanogr Letters

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“…In this study, we simulated a crude oil spill at the Hibernia and Terra Nova platforms and a gas condensate spill at the Thebaud (Sable Island) platform. Recent studies have identified bacteria from more than 79 genera that are able to degrade hydrocarbons, and several of these, including Alcanivorax, Cycloclasticus, Oleiphilus, Oleispira, Thalassolituus and some members of the genus Planomicrobium Reddy et al, 2012;Redmond and Valentine, 2012;Valentine et al, 2012;Kleindienst et al, 2016), get their carbon almost exclusively from hydrocarbons (Prince, 2010;Prince et al, 2010). Many DWH-related studies showed that microorganisms belonging to the order Oceanospirillales were involved in oil degradation (Hazen et al, 2010;Valentine et al, 2010;Kessler et al, 2011;Redmond and Valentine, 2012;Gutierrez et al, 2013) and that they possessed active oil degradation genes Rivers et al, 2013), but little information was presented regarding the hydrocarbon-degrading activities of the different members of this order during an oil spill.…”

Section: Introductionmentioning

confidence: 99%

Chemical dispersants enhance the activity of oil- and gas condensate-degrading marine bacteria

et al. 2017

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Application of chemical dispersants to oil spills in the marine environment is a common practice to disperse oil into the water column and stimulate oil biodegradation by increasing its bioavailability to indigenous bacteria capable of naturally metabolizing hydrocarbons. In the context of a spill event, the biodegradation of crude oil and gas condensate off eastern Canada is an essential component of a response strategy. In laboratory experiments, we simulated conditions similar to an oil spill with and without the addition of chemical dispersant under both winter and summer conditions and evaluated the natural attenuation potential for hydrocarbons in near-surface sea water from the vicinity of crude oil and natural gas production facilities off eastern Canada. Chemical analyses were performed to determine hydrocarbon degradation rates, and metagenome binning combined with metatranscriptomics was used to reconstruct abundant bacterial genomes and estimate their oil degradation gene abundance and activity. Our results show important and rapid structural shifts in microbial populations in all three different oil production sites examined following exposure to oil, oil with dispersant and dispersant alone. We found that the addition of dispersant to crude oil enhanced oil degradation rates and favored the abundance and expression of oil-degrading genes from a Thalassolituus sp. (that is, metagenome bin) that harbors multiple alkane hydroxylase (alkB) gene copies. We propose that this member of the Oceanospirillales group would be an important oil degrader when oil spills are treated with dispersant.

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“…Polymenakou et al ., ; Schauer et al ., ; Zhu et al ., ; Bienhold et al ., ). The majority of aerobic oil‐degrading bacteria described to date are Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria (Head et al ., ; van Beilen and Funhoff, ; Kim and Kwon, ; Prince et al ., ). 16S rRNA studies conducted following the DWH wellhead blowout confirmed a dominant role of Proteobacteria, in particular Gammaproteobacteria, in oil degradation, demonstrating a rapid shift in the bacterial community composition in the water column, with the proliferation of Gammaproteobacteria related to Oceanospirillales , Colwellia and Cycloclasticus (Head et al ., ; van Beilen and Funhoff, ; Hazen et al ., ; Dubinsky et al ., ).…”

Section: Resultsmentioning

confidence: 97%

Baseline characterization of aerobic hydrocarbon degrading microbial communities in deep‐sea sediments of the Great Australian Bight, Australia

Kamp

Hook

Williams

et al. 2019

Environmental Microbiology

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Summary Exploratory drilling for deep‐sea oil and gas resources is planned for the Great Australian Bight (GAB). There is scant knowledge of the region's benthic ecosystems and no baseline information of the region's indigenous oil degrading bacteria. To address this knowledge gap, we used next generation sequencing (NGS) of three marker genes (alkB, c23o and pmoA) to detect and characterize the microbial communities capable of aerobic hydrocarbon degradation. Unique, highly novel microbial communities capable of degrading hydrocarbons occur in surface sediments at depths between 200 and 2800 m. Clustering at 97% demonstrated differences in community structure with depth, changing most markedly between 400 and 1000 m depth on the continental slope, and identified putative functional ‘ecotypes’ related to depth. Observed differences in community structure showed strong correlations with temperature, other physicochemical properties of the overlying water column and are further modulated by differences in sediment grain size. This study provides important baseline data on hydrocarbon degrading microbial communities prior to the start of petroleum resource extraction. Our data will inform future ecological monitoring of the GAB deep‐sea ecosystem.

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Prokaryotic Hydrocarbon Degraders

Cited by 53 publications

References 318 publications

The role of microbial exopolymers in determining the fate of oil and chemical dispersants in the ocean

The role of microbial exopolymers in determining the fate of oil and chemical dispersants in the ocean

Chemical dispersants enhance the activity of oil- and gas condensate-degrading marine bacteria

Baseline characterization of aerobic hydrocarbon degrading microbial communities in deep‐sea sediments of the Great Australian Bight, Australia

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