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Comparative metagenomics of hydrocarbon and methane seeps of the Gulf of Mexico

Journal Article · · Scientific Reports
 [1];  [2];  [3];  [4];  [4];  [4];  [4];  [5];  [6];  [7];  [4]
  1. Newcastle Univ., Newcastle Upon Tyne (United Kingdom); Shell International Exploration and Production Inc., Houston, TX (United States)
  2. Shell International Exploration and Production Inc., Houston, TX (United States); USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  3. Institut national de la recherche agronomique (INRA), Montferrier-sur-Lez (France). Centre de Biologie et de Gestion des Populations (CBGP)
  4. Shell International Exploration and Production Inc., Houston, TX (United States)
  5. Shell Global Solutions International B.V., Rijswijk (Netherlands)
  6. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  7. Newcastle Univ., Newcastle Upon Tyne (United Kingdom)
Oil and gas percolate profusely through the sediments of the Gulf of Mexico, leading to numerous seeps at the seafloor, where complex microbial, and sometimes animal communities flourish. Sediments from three areas (two cold seeps with contrasting hydrocarbon composition and a site outside any area of active seepage) of the Gulf of Mexico were investigated and compared. Consistent with the existence of a seep microbiome, a distinct microbial community was observed in seep areas compared to sediment from outside areas of active seepage. The microbial community from sediments without any influence from hydrocarbon seepage was characterized by Planctomycetes and the metabolic potential was consistent with detrital marine snow degradation. By contrast, in seep samples with methane as the principal hydrocarbon, methane oxidation by abundant members of ANME-1 was likely the predominant process. Seep samples characterized by fluids containing both methane and complex hydrocarbons, were characterized by abundant Chloroflexi (Anaerolinaceae) and deltaproteobacterial lineages and exhibited potential for complex hydrocarbon degradation. These different metabolic capacities suggested that microorganisms in cold seeps can potentially rely on other processes beyond methane oxidation and that the hydrocarbon composition of the seep fluids may be a critical factor structuring the seafloor microbial community composition and function.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC)
OSTI ID:
1543776
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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  • International Journal of Systematic and Evolutionary Microbiology, Vol. 65, Issue 6 https://doi.org/10.1099/ijs.0.000308
journal June 2015
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Cited By (8)

Anaerobic hydrocarbon degradation in candidate phylum ‘Atribacteria’ (JS1) inferred from genomics journal June 2019
Metabolic potential of uncultured bacteria and archaea associated with petroleum seepage in deep-sea sediments journal April 2019
Mud volcanoes and the presence of PAHs journal January 2020
Contrasting Pathways for Anaerobic Methane Oxidation in Gulf of Mexico Cold Seep Sediments journal February 2019
Microbial Diversity and Connectivity in Deep-Sea Sediments of the South Atlantic Polar Front journal April 2019
Additional file 1 of Metagenomic insights into Heimdallarchaeia clades from the deep-sea cold seep and hydrothermal vent dataset January 2024
Methane-fuelled biofilms predominantly composed of methanotrophic ANME-1 in Arctic gas hydrate-related sediments journal July 2019
On the maverick Planctomycetes journal July 2018

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