Geobacillus icigianus sp. nov., a thermophilic bacterium isolated from a hot spring

Int J Syst Evol Microbiol. 2015 Mar;65(Pt 3):864-869. doi: 10.1099/ijs.0.000029. Epub 2014 Dec 16.


A Gram-reaction-positive, motile, thermophilic spore-forming strain, G1w1(T), was isolated from a hot spring of the Valley of Geysers, Kamchatka (Russia). Based on data from the present polyphasic taxonomic study, including phylogenetic analysis of 16S rRNA and spo0A gene sequences, the strain is considered to represent a novel species of the genus Geobacillus, for which the name Geobacillus icigianus sp. nov. is proposed. The type strain is G1w1(T) ( = VKM B-2853(T) = DSM 28325(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Typing Techniques
  • Base Composition
  • DNA, Bacterial / genetics
  • Fatty Acids / chemistry
  • Genes, Bacterial
  • Geobacillus / classification*
  • Geobacillus / genetics
  • Geobacillus / isolation & purification
  • Hot Springs / microbiology*
  • Molecular Sequence Data
  • Phylogeny*
  • RNA, Ribosomal, 16S / genetics
  • Russia
  • Sequence Analysis, DNA


  • DNA, Bacterial
  • Fatty Acids
  • RNA, Ribosomal, 16S