Propionicicella superfundia gen. nov., sp. nov., a chlorosolvent-tolerant propionate-forming, facultative anaerobic bacterium isolated from contaminated groundwater

Syst Appl Microbiol. 2006 Jul;29(5):404-13. doi: 10.1016/j.syapm.2005.11.004. Epub 2005 Dec 9.

Abstract

A novel strain, designated as BL-10(T), was characterized using a polyphasic approach after isolation from groundwater contaminated by a mixture of chlorosolvents that included 1,1,2-trichloroethane, 1,2-dichloroethane, and vinyl chloride. Stain BL-10(T) is a facultatively anaerobic bacterium able to ferment glucose to form propionate, acetate, formate, lactate, and succinate. Fermentation occurred in the presence of 1,2-dichloroethane and 1,1,2-trichloroethane at concentrations to at least 9.8 and 5.9 mM, respectively. Cells are Gram-positive, rod-shaped, non-motile, and do not form spores. Oxidase and catalase are not produced and nitrate reduction did not occur in PYG medium. Menaquinone MK-9 is the predominant respiratory quinone and meso-diaminopimelic acid is present in the cell wall peptidoglycan layer. Major cellular fatty acids are C(15:0), iso C(16:0), and anteiso C(15:0). Genomic DNA G + C content is 69.9 mol%. Phylogenetic analysis based on 16S rRNA gene sequence comparisons showed strain BL-10(T) to fall within the radiation of genera Propionicimonas and Micropruina. On the basis of the results obtained in this study, it is proposed that strain BL-10(T) should be classified as a novel taxon, for which the name Propionicicella superfundia gen. nov., sp. nov. is proposed. The type strain of Propionicicella superfundia is BL-10(T) (=ATCC BAA-1218(T), =LMG 23096(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biodegradation, Environmental
  • Ethylene Dichlorides / metabolism
  • Geologic Sediments / microbiology
  • Gram-Negative Facultatively Anaerobic Rods / isolation & purification*
  • Gram-Negative Facultatively Anaerobic Rods / metabolism
  • Molecular Sequence Data
  • Phylogeny
  • RNA, Ribosomal, 16S / analysis
  • Trichloroethanes / metabolism
  • Water Microbiology*
  • Water Pollutants, Chemical / metabolism

Substances

  • Ethylene Dichlorides
  • RNA, Ribosomal, 16S
  • Trichloroethanes
  • Water Pollutants, Chemical
  • 1,1,2-trichloroethane
  • ethylene dichloride

Associated data

  • GENBANK/DQ176646