A novel lineage of sulfate-reducing microorganisms: Thermodesulfobiaceae fam. nov., Thermodesulfobium narugense, gen. nov., sp. nov., a new thermophilic isolate from a hot spring

Koji Mori, Hongik Kim, Takeshi Kakegawa, Satoshi Hanada

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)

Abstract

A novel type of a sulfate-reducing microorganism, represented by strain Na82T, was isolated from a hot spring in Narugo, Japan. The isolate was a moderate thermophilic autotroph that was able to grow on H 2/CO2 by sulfate respiration. The isolate could grow with nitrate in place of sulfate, and possessed menaquinone-7 and menaquinone-7(H2) as respiratory quinones. Phylogenetic analysis of the 16S rRNA gene sequence indicated that strain Na82T was a member of the domain Bacteria and distant from any known bacteria, as well as from other sulfate-reducing bacteria (sequence similarities less than 80%). The phylogenetic analysis of the dsrAB gene (alpha and beta subunits of dissimilatory sulfite reductase) sequence also suggested that strain Na82 T was not closely related to other sulfate reducers. On the basis of the phenotypic and phylogenetic data, a new taxon is established for the isolate. We proposed the name Thermodesulfobium narugense gen. nov., sp. nov. with strain Na82T (=DSM 14796T=JCM 11510T) as the type strain. Furthermore, a new family, Thermodesulfobiaceae fam. nov., is proposed for the genus.

Original languageEnglish
Pages (from-to)283-290
Number of pages8
JournalExtremophiles
Volume7
Issue number4
DOIs
Publication statusPublished - 2003 Aug

Keywords

  • Anaerobe
  • Hot spring
  • Sulfate-reducing bacterium
  • Thermodesulfobiaceae fam. nov.
  • Thermodesulfobium narugense gen. nov., sp. nov.
  • Thermophile

ASJC Scopus subject areas

  • Microbiology
  • Molecular Medicine

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