title: Free-living heterotrophic nitrogen-fixing bacteria isolated from fuel-contaminated antarctic soils.
abstract: Five bacterial isolates enriched from fuel-contaminated Antarctic soils fixed nitrogen in the dark heterotrophically and nonsymbiotically. Two isolates utilized jet fuel vapors and volatile hydrocarbons for growth but not in N-deficient medium. Bacteria such as these may contribute to in situ biodegradation of hydrocarbons in Antarctic soils.
mesh_terms: D000864:Antarctic Regions; D001419:Bacteria / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism; D001673:Biodegradation, Environmental; D005648:Fuel Oils / Q000032:analysis; D009586:Nitrogen Fixation / Q000502:physiology*; D009591:Nitrogenase / Q000378:metabolism; D010802:Phylogeny; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D013696:Temperature
chemical_list: D005648:Fuel Oils; D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants; D009591:Nitrogenase