Archives of Microbiology

, Volume 140, Issue 2–3, pp 139–146 | Cite as

A new 3-hydroxybutyrate fermenting anaerobe, Ilyobacter polytropus, gen. nov. sp. nov., possessing various fermentation pathways

  • Marion Stieb
  • Bernhard Schink
Original Papers


From marine anoxic mud, a new strictly anaerobic, Gram-negative, non-sporeforming bacterium was isolated with 3-hydroxybutyrate as substrate. 3-Hydroxybutyrate and crotonate were fermented to acetate and butyrate. Glycerol was fermented to 1,3-propanediol and 3-hydroxypropionate. Acetate and formate were the only products of pyruvate or citrate fermentation. Glucose and fructose were fermented to acetate, formate and ethanol. Malate and fumarate were fermented to acetate, formate and propionate. Neither sulfate, sulfur, nor nitrate was reduced. The DNA base ratio was 32.2±0.5 mol% guanine plus cytosine. Strain CuHbu1 is described as type strain of a new genus and species, Ilyobacter polytropus gen. nov. sp. nov., in the family Bacteroidaceae.

Key words

Ilyobacter polytropus gen. nov. sp. nov. genus and species description Anaerobic degradation 3-Hydroxybutyrate Butyrate fermentation Propionate fermentation Ethanol fermentation Glycerol degradation 


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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Marion Stieb
    • 1
  • Bernhard Schink
    • 1
  1. 1.Fakultät für BiologieUniversität KonstanzKonstanzFederal Republic of Germany

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