Affiliation:
1. Field Research Laboratory, Socony Mobil Oil Company, Inc., Dallas, Texas
Abstract
Davis
, J. B. (Socony Mobil Oil Co., Inc., Dallas, Tex.), V. F.
Coty, and J. P. Stanley
. Atmospheric nitrogen fixation by methane-oxidizing bacteria. J. Bacteriol.
88:
468–472. 1964.—Methane-oxidizing bacteria capable of fixing atmospheric nitrogen were isolated from garden soil, pond mud, oil field soil, and soil exposed to natural gas, indicating a rather wide prevalence in nature. This may explain the high concentration of organic nitrogen commonly found in soils exposed to gas leakage from pipelines or natural-gas seeps. Added molybdenum was a requirement for growth in a nitrogen-free mineral salts medium. All nitrogen-fixing, methane-oxidizing bacteria isolated were gram-negative, nonsporeforming, usually motile rods. Colonies were light yellow, yellow, or white. The most common isolate, which formed light-yellow colonies, is referred to as
Pseudomonas methanitrificans
sp. n., and is distinguished from
Pseudomonas
(
Methanomonas
)
methanica
by nitrogen-fixing ability and a preponderance of poly-β-hydroxybutyrate in the cellular lipid fraction.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
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