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Bacterial communities and syntrophic associations involved in anaerobic oxidation of methane process of the Sonora Margin cold seeps, Guaymas Basin.
Environ Microbiol. 2014 Sep; 16(9):2777-90.EM

Abstract

SUMMARY

The Sonora Margin cold seeps present on the seafloor a patchiness pattern of white microbial mats surrounded by polychaete and gastropod beds. These surface assemblages are fuelled by abundant organic inputs sedimenting from the water column and upward-flowing seep fluids. Elevated microbial density was observed in the underlying sediments. A previous study on the same samples identified anaerobic oxidation of methane (AOM) as the potential dominant archaeal process in these Sonora Margin sediments, probably catalysed by three clades of archaeal anaerobic methanotrophs (ANME-1, ANME-2 and ANME-3) associated with bacterial syntrophs. In this study, molecular surveys and microscopic observations investigating the diversity of Bacteria involved in AOM process, as well as the environmental parameters affecting the composition and the morphologies of AOM consortia in the Sonora Margin sediments were carried out. Two groups of Bacteria were identified within the AOM consortia, the Desulfosarcina/Desulfococcus SEEP SRB-1a group and a Desulfobulbus-related group. These bacteria showed different niche distributions, association specificities and consortia architectures, depending on sediment surface communities, geochemical parameters and ANME-associated phylogeny. Therefore, the syntrophic AOM process appears to depend on sulphate-reducing bacteria with different ecological niches and/or metabolisms, in a biofilm-like organic matrix.

Authors+Show Affiliations

Ifremer, Laboratoire de Microbiologie des Environnements Extrêmes, Technopôle Brest Iroise, Plouzané, France; Université de Bretagne Occidentale, Technopôle Brest Iroise, Plouzané, France; CNRS, Laboratoire de Microbiologie des Environnements Extrêmes, Technopôle Brest Iroise, Plouzané, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24238139

Citation

Vigneron, Adrien, et al. "Bacterial Communities and Syntrophic Associations Involved in Anaerobic Oxidation of Methane Process of the Sonora Margin Cold Seeps, Guaymas Basin." Environmental Microbiology, vol. 16, no. 9, 2014, pp. 2777-90.
Vigneron A, Cruaud P, Pignet P, et al. Bacterial communities and syntrophic associations involved in anaerobic oxidation of methane process of the Sonora Margin cold seeps, Guaymas Basin. Environ Microbiol. 2014;16(9):2777-90.
Vigneron, A., Cruaud, P., Pignet, P., Caprais, J. C., Gayet, N., Cambon-Bonavita, M. A., Godfroy, A., & Toffin, L. (2014). Bacterial communities and syntrophic associations involved in anaerobic oxidation of methane process of the Sonora Margin cold seeps, Guaymas Basin. Environmental Microbiology, 16(9), 2777-90. https://doi.org/10.1111/1462-2920.12324
Vigneron A, et al. Bacterial Communities and Syntrophic Associations Involved in Anaerobic Oxidation of Methane Process of the Sonora Margin Cold Seeps, Guaymas Basin. Environ Microbiol. 2014;16(9):2777-90. PubMed PMID: 24238139.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bacterial communities and syntrophic associations involved in anaerobic oxidation of methane process of the Sonora Margin cold seeps, Guaymas Basin. AU - Vigneron,Adrien, AU - Cruaud,Perrine, AU - Pignet,Patricia, AU - Caprais,Jean-Claude, AU - Gayet,Nicolas, AU - Cambon-Bonavita,Marie-Anne, AU - Godfroy,Anne, AU - Toffin,Laurent, Y1 - 2013/12/13/ PY - 2013/01/14/received PY - 2013/10/31/accepted PY - 2013/11/19/entrez PY - 2013/11/19/pubmed PY - 2015/4/12/medline SP - 2777 EP - 90 JF - Environmental microbiology JO - Environ. Microbiol. VL - 16 IS - 9 N2 - SUMMARY: The Sonora Margin cold seeps present on the seafloor a patchiness pattern of white microbial mats surrounded by polychaete and gastropod beds. These surface assemblages are fuelled by abundant organic inputs sedimenting from the water column and upward-flowing seep fluids. Elevated microbial density was observed in the underlying sediments. A previous study on the same samples identified anaerobic oxidation of methane (AOM) as the potential dominant archaeal process in these Sonora Margin sediments, probably catalysed by three clades of archaeal anaerobic methanotrophs (ANME-1, ANME-2 and ANME-3) associated with bacterial syntrophs. In this study, molecular surveys and microscopic observations investigating the diversity of Bacteria involved in AOM process, as well as the environmental parameters affecting the composition and the morphologies of AOM consortia in the Sonora Margin sediments were carried out. Two groups of Bacteria were identified within the AOM consortia, the Desulfosarcina/Desulfococcus SEEP SRB-1a group and a Desulfobulbus-related group. These bacteria showed different niche distributions, association specificities and consortia architectures, depending on sediment surface communities, geochemical parameters and ANME-associated phylogeny. Therefore, the syntrophic AOM process appears to depend on sulphate-reducing bacteria with different ecological niches and/or metabolisms, in a biofilm-like organic matrix. SN - 1462-2920 UR - https://www.unboundmedicine.com/medline/citation/24238139/Bacterial_communities_and_syntrophic_associations_involved_in_anaerobic_oxidation_of_methane_process_of_the_Sonora_Margin_cold_seeps_Guaymas_Basin_ L2 - https://doi.org/10.1111/1462-2920.12324 DB - PRIME DP - Unbound Medicine ER -