Microbacterium insulae sp. nov., isolated from soil

Int J Syst Evol Microbiol. 2009 Jul;59(Pt 7):1738-42. doi: 10.1099/ijs.0.007591-0. Epub 2009 Jun 19.


A Gram-positive, non-motile, rod- or coccoid-shaped Microbacterium-like bacterium, designated strain DS-66(T), was isolated from soil of Dokdo, Korea, and its exact taxonomic position was investigated by using a polyphasic approach. Strain DS-66(T) grew optimally at 30 degrees C and pH 6.5-7.0 in the presence of 0.5-1.0 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain DS-66(T) belonged to the genus Microbacterium. Strain DS-66(T) had a peptidoglycan type based on B2beta with partial substitution of glutamic acid by 3-hydroxy glutamic acid (Glu/Hyg-Gly-d-Orn), and galactose, rhamnose and ribose as whole-cell sugars. The acyl type was glycolyl. Strain DS-66(T) contained MK-13, MK-12 and MK-14 as predominant menaquinones and anteiso-C(15 : 0), anteiso-C(17 : 0), iso-C(17 : 0) and iso-C(16 : 0) as major fatty acids. Major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, an unidentified phospholipid and an unidentified glycolipid. The DNA G+C content was 69.9 mol%. Phylogenetic distinctiveness, DNA-DNA relatedness data and differential phenotypic properties demonstrated that strain DS-66(T) is distinguishable from recognized Microbacterium species. On the basis of the data presented, strain DS-66(T) is considered to represent a novel species of the genus Microbacterium, for which the name Microbacterium insulae sp. nov. is proposed. The type strain is DS-66(T) (=KCTC 19247(T)=CCUG 54523(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actinomycetales / classification*
  • Actinomycetales / genetics
  • Actinomycetales / isolation & purification
  • Actinomycetales / physiology
  • Bacterial Typing Techniques
  • Base Composition
  • DNA, Bacterial / analysis
  • Genes, rRNA
  • Genotype
  • Korea
  • Lipids / analysis
  • Molecular Sequence Data
  • Nucleic Acid Hybridization
  • Phenotype
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Soil Microbiology*
  • Species Specificity


  • DNA, Bacterial
  • Lipids
  • RNA, Ribosomal, 16S

Associated data

  • GENBANK/EU239498