Enrichment and characterization of a methanogenic bacterium from the oxic upper layer of the ocean

Enrichment cultures containing marine plankton from oxygenated coastal waters (50-108% saturated) with supersaturated levels of methane (> 700% saturated) yielded a strictly anaerobic methanogenic bacterium. Nonmotile, non-spore-forming, regular to slightly irregular cocci (0.5-0.8 mu m) were evi...

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Bibliographic Details
Published in:Current microbiology 1991-08, Vol.23 (2), p.89-96
Main Authors: CYNAR, F. J, YAYANOS, A. A
Format: Article
Language:English
Subjects:
Bacteriology
Biological and medical sciences
Biotechnology
Fundamental and applied biological sciences. Psychology
Microbiology
Pathogenicity, virulence, toxins, bacteriocins, pyrogens, host-bacteria relations, miscellaneous strains
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Summary:Enrichment cultures containing marine plankton from oxygenated coastal waters (50-108% saturated) with supersaturated levels of methane (> 700% saturated) yielded a strictly anaerobic methanogenic bacterium. Nonmotile, non-spore-forming, regular to slightly irregular cocci (0.5-0.8 mu m) were evident by phase contrast, epifluorescence, and scanning electron microscopies. The DNA base composition was 42 plus or minus 1% guanine plus cytosine. Serology suggested the isolate may be a new strain of Methanococcoides methylutens . Morphology, growth physiology, DNA base content and serology are all consistent with the type description of M. methylutens , a methylotrophic methanogen isolated from submarine sediments.
ISSN:0343-8651
1432-0991
DOI:10.1007/bf02092256