Terriglobus tenax sp. nov., an exopolysaccharide-producing acidobacterium isolated from rhizosphere soil of a medicinal plant

Int J Syst Evol Microbiol. 2014 Feb;64(Pt 2):431-437. doi: 10.1099/ijs.0.053769-0. Epub 2013 Oct 4.

Abstract

An exopolysaccharide-producing bacterium, designated strain DRP 35(T), was isolated from the rhizosphere soil of a medicinal herb, Angelica sinensis, at Geumsan in Korea. Cells were Gram-staining-negative, non-motile, catalase-positive and oxidase-negative short rods. The isolate grew aerobically from 15 to 45 °C (optimum 30 °C), pH 3.5-7.0 (optimum pH 5.0) and in the presence of 0-1.0% (w/v) NaCl. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain DRP 35(T) belongs to the genus Terriglobus in the phylum Acidobacteria with a sequence similarity of 97.2% and 97.0% to Terriglobus saanensis SP1PR4(T) and Terriglobus roseus KBS63(T), respectively. The genomic DNA G+C content was 62.1 mol%. DNA-DNA relatedness between strain DRP 35(T) and the type strains of the other species of the genus Terriglobus, T. saanensis SP1PR4(T) and T. roseus KBS63(T), were 24.6 and 17.2%, respectively. The predominant menaquinone was MK-8. Major fatty acids were iso-C(15 : 0), C(16 : 1)ω7c and C(16 : 0). The polar lipids were phosphatidylethanolamine, unidentified aminophospholipid and unknown phospholipids. On the basis of polyphasic analysis from this study, strain DRP 35(T) represents a novel species of the genus Terriglobus for which the name Terriglobus tenax sp. nov. is proposed. The type strain is DRP 35(T) ( = KACC 16474(T) = NBRC 109677(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acidobacteria / classification*
  • Acidobacteria / genetics
  • Acidobacteria / isolation & purification
  • Angelica sinensis / microbiology*
  • Bacterial Typing Techniques
  • Base Composition
  • DNA, Bacterial / genetics
  • Fatty Acids / chemistry
  • Molecular Sequence Data
  • Nucleic Acid Hybridization
  • Phosphatidylethanolamines / chemistry
  • Phospholipids / chemistry
  • Phylogeny*
  • Plants, Medicinal / microbiology
  • RNA, Ribosomal, 16S / genetics
  • Republic of Korea
  • Rhizosphere*
  • Sequence Analysis, DNA
  • Soil Microbiology*
  • Vitamin K 2 / analogs & derivatives
  • Vitamin K 2 / chemistry

Substances

  • DNA, Bacterial
  • Fatty Acids
  • Phosphatidylethanolamines
  • Phospholipids
  • RNA, Ribosomal, 16S
  • Vitamin K 2
  • phosphatidylethanolamine
  • vitamin MK 8

Associated data

  • GENBANK/JN543507