Archives of Microbiology

, Volume 133, Issue 3, pp 209–216

Propionigenium modestum gen. nov. sp. nov. a new strictly anaerobic, nonsporing bacterium growing on succinate

  • Bernhard Schink
  • Norbert Pfennig
Original Papers

DOI: 10.1007/BF00415003

Cite this article as:
Schink, B. & Pfennig, N. Arch. Microbiol. (1982) 133: 209. doi:10.1007/BF00415003


From marine and freshwater mud samples and from human saliva new strictly anaerobic, Gram-negative, nonsporeforming bacteria were isolated growing with succinate as sole source of carbon and energy. All strains grew in defined mineral media containing at least 1% sodium chloride. Succinate was stoichiometrically transformed to propionate und carbon dioxide; the growth yield varied between 2.1 and 2.4 g cell dry weight per mol of succinate fermented. In addition to succinate, only fumarate, l-aspartate, l-malate, oxaloacetate and pyruvate, were utilized and were stoichiometrically fermented to propionate and acetate. Yeast extract was not fermented but enhanced growth rates and yields. Neither sulfate, sulfur, nor nitrate were reduced. The DNA base ratio was 33.9±0.3 mol % guanine plus cytosine. A marine isolate, strain Gra Succ 2, is described as type strain of a new species, Propionigenium modestum gen. nov. sp. nov., in the family Bacteroidaceae.

Key words

Propionigenium modestum gen. nov. sp. nov. genus and species descriptionSuccinate degradationAnaerobic fermentationsEnergy metabolism

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Bernhard Schink
    • 1
  • Norbert Pfennig
    • 1
  1. 1.Fakultät für BiologieUniversität KonstanzKonstanzFederal Republic of Germany