Bacillus gaemokensis sp. nov., isolated from foreshore tidal flat sediment from the Yellow Sea

J Microbiol. 2010 Dec;48(6):867-71. doi: 10.1007/s12275-010-0148-0. Epub 2011 Jan 9.


A Gram-positive, rod-shaped, endospore-forming organism, strain BL3-6(T), was isolated from tidal flat sediments of the Yellow Sea in the region of Tae-An. A 16S rRNA gene sequence analysis demonstrated that this isolate belongs to the Bacillus cereus group, and is closely related to Bacillus mycoides (99.0% similarity), Bacillus thuringiensis (99.0%), Bacillus weihenstephanensis (99.0%), Bacillus cereus (98.9%), Bacillus anthracis (98.8%), and Bacillus pseudomycoides (98.1%). The phylogenetic distance from any validly described Bacillus species outside the Bacillus cereus group was less than 95.6%. The DNA G+C content of the strain was 39.4 mol% and the major respiratory quinone was menaquinone-7. The major cellular fatty acids were iso-C(14:0) (17.8%), iso-C(16:0) (15.8%), and iso-C(12:0) (11.3%). The diagnostic amino acid of the cell wall was meso-diaminopimelic acid and the major cell wall sugar was galactose. The results of DNA-DNA hybridization (<55.6%) and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain BL3-6(T) from the published Bacillus species. BL3-6(T) therefore represents a new species, for which the name Bacillus gaemokensis sp. nov. is proposed, with the type strain BL3-6(T) (=KCTC 13318(T) =JCM 15801(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacillus / chemistry
  • Bacillus / classification*
  • Bacillus / genetics
  • Bacillus / isolation & purification*
  • Base Composition
  • Cell Wall / chemistry
  • Cluster Analysis
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • DNA, Ribosomal / chemistry
  • DNA, Ribosomal / genetics
  • Diaminopimelic Acid / analysis
  • Fatty Acids / analysis
  • Galactose / analysis
  • Geologic Sediments / microbiology*
  • Molecular Sequence Data
  • Nucleic Acid Hybridization
  • Phylogeny
  • Quinones / analysis
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Spores, Bacterial / cytology


  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • Quinones
  • RNA, Ribosomal, 16S
  • Diaminopimelic Acid
  • Galactose

Associated data

  • GENBANK/FJ416489