Geodermatophilus normandii sp. nov., isolated from Saharan desert sand

Int J Syst Evol Microbiol. 2013 Sep;63(Pt 9):3437-3443. doi: 10.1099/ijs.0.051201-0. Epub 2013 Mar 29.

Abstract

A novel Gram-reaction-positive actinobacterial strain, designated CF5/3(T), was isolated from a sand sample obtained in the Sahara Desert, Chad. The greenish-black-pigmented isolate was aerobic and exhibited optimal growth from 25-40 °C at pH 6.0-10.0 with 0-1% (w/v) NaCl. Chemotaxonomic and molecular characteristics of the isolate matched those described for members of the genus Geodermatophilus. The DNA G+C content of the genome of the novel strain was 75.5 mol%. The peptidoglycan contained meso-diaminopimelic acid as diagnostic diamino acid. The main phospholipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol and a minor fraction of phosphatidylglycerol. MK-9(H4) was the dominant menaquinone, and galactose was detected as a diagnostic sugar. The major cellular fatty acids were branched-chain saturated acids: iso-C(15:0) and iso-C(16:0). Analysis of 16S rRNA gene sequences showed 95.6-98.8% pairwise sequence identity with the members of the genus Geodermatophilus. Based on phenotypic and chemotaxonomic properties, as well as phylogenetic distinctiveness, the isolate represents a novel species, Geodermatophilus normandii, with the type strain CF5/3(T) ( =DSM 45417(T) =CCUG 62814(T) =MTCC 11412(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actinomycetales / classification*
  • Actinomycetales / genetics
  • Actinomycetales / isolation & purification
  • Africa, Northern
  • Bacterial Typing Techniques
  • Base Composition
  • Chad
  • DNA, Bacterial / genetics
  • Desert Climate
  • Diaminopimelic Acid / analysis
  • Fatty Acids / analysis
  • Molecular Sequence Data
  • Peptidoglycan / analysis
  • Phospholipids / analysis
  • Phylogeny*
  • RNA, Ribosomal, 16S / genetics
  • Silicon Dioxide*
  • Soil Microbiology*
  • Vitamin K 2 / analogs & derivatives
  • Vitamin K 2 / analysis

Substances

  • DNA, Bacterial
  • Fatty Acids
  • Peptidoglycan
  • Phospholipids
  • RNA, Ribosomal, 16S
  • Vitamin K 2
  • menaquinone 9
  • Diaminopimelic Acid
  • Silicon Dioxide

Associated data

  • GENBANK/HE654546