[Extracellular metabolites of hydrocarbon-oxidizing bacteria as a substrate for sulfate reduction].
The relationship between bacterial oxidation of hydrocarbons and sulfate reduction was studied in the experimental system with liquid paraffin was used as a source of organic compounds inoculated with silt taken from a reservoir. Pseudomonads dominated in the hydrocarbon-oxidizing silt bacteriocenosis. However, Rhodococcus and Arthrobacteria amounted to not more than 3%. Arthrobacteria dominated the microbial association formed in the paraffin film of the model system. Sulfate-reducing bacteria were represented by genera Desulfomonas, Desulfotomaculum, and Desulfovibrio. The growth of sulfate-reducing bacteria in media containing with paraffin, successive products of its oxidation (cetyl alcohol, stearate, and acetate), and extracellular metabolites of hydrocarbon-reducing bacteria was studied. The data showed that sulfate-reducing bacteria did not use paraffin or cetyl alcohol as growth substrates. However, active growth of sulfate-reducing bacteria was observed in the presence of stearate and extracellular water-soluble or lipid metabolites of Arthrobacteria.
Koronelli
T V
TV
Lomonosov Moscow State University, Moscow, 119899 Russia.
Komarova
T I
TI
Porshneva
O V
OV
Tkebuchava
L F
LF
D006089:Gram-Negative Anaerobic Bacteria / Q000378:metabolism*; D006838:Hydrocarbons / Q000378:metabolism*; D010084:Oxidation-Reduction; D013431:Sulfates / Q000378:metabolism*
D006838:Hydrocarbons; D013431:Sulfates
Vnekletochnye metabolity uglevodorodokisliaiushchikh bakteriĭ kak substrat dlia razvitiia sul'fatreduktsii.