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Main Title Validation of Signature Polarlipid Fatty Acid Biomarkers for Alkane-Utilizing Bacteria in Soils and Subsurface Aquifer Materials.
Author Ringelberg, D. B. ; Davis, J. D. ; Smith, G. A. ; Pfiffner, S. M. ; Nichols, P. D. ;
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK. ;Tennessee Univ., Knoxville. Inst. for Applied Microbiology. ;Commonwealth Scientific and Industrial Research Organization, Hobart (Australia). Div. of Oceanography. ;Florida State Univ., Tallahassee. Dept. of Biological Science. ;Johnson (S.C.) and Son, Inc., Racine, WI.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/048;
Stock Number PB89-197438
Additional Subjects Fatty acids ; Bacteria ; Soils ; Exposure ; Microorganisms ; Reprints ; Biomarkers
Library Call Number Additional Info Location Last
NTIS  PB89-197438 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
Extractable cell membrane-derived polarlipid ester-linked fatty acids (PLFA) obtained from aerated soils gassed with methane or propane and from methane- and propane-oxidizing bacteria isolated from the soils were analyzed by capillary gas chromatography/mass spectrometry. Exposure of aerated soils to methane resulted in the formation of a high proportion of an unusual 18-carbon mono-saturated PLFA, 18:1w8c. High proportions of this fatty acid biomarker are found in monocultures from this soil grown in minimal media with methane. This PLFA has been previously established as associated with authentic type II methane-oxidizing bacteria. This PLFA pattern has been detected in several monocultures enriched from the soil with propane-amended minimal media. The correspondence of high proportions of these unusual mono-unsaturated PLFA in the isolated monocultures and in situ in the soils after stimulation with the appropriate hydrocarbon is a strong validation of the utility of these biomarkers in defining the community structure of the surface soil microbial community. (Copyright (c) 1989 Federation of European Microbiological Societies.)