Virgisporangium myanmarense sp. nov., a novel motile actinomycete isolated from an anthill soil in Myanmar

J Antibiot (Tokyo). 2017 Oct;70(10):995-999. doi: 10.1038/ja.2017.81. Epub 2017 Jul 12.

Abstract

An actinomycete strain, designated MM04-1133T, was isolated from an anthill soil sample collected in Bagan, Myanmar. To establish the taxonomic status of this strain, the isolate was subjected to a polyphasic approach. Strain MM04-1133T was Gram-staining positive, aerobic, motile and formed long and narrow sporangia directly above the surface of the substrate mycelium. Whole-cell hydrolysates of the strain contained 3-OH-diaminopimelic acid, arabinose, glucose, galactose, mannose, rhamnose and xylose. The predominant menaquinones were MK-10(H6) and MK-10(H8). The major cellular fatty acids were iso-C16:0 and anteiso-C17:0. The diagnostic phospholipid was phosphatidylethanolamine. The G+C content of the DNA was 69.1 mol%. Phylogenetic analysis based on 16S rRNA gene sequence revealed that strain MM04-1133T clustered within the genus Virgisporangium, with the sequence exhibiting highest similarity (98.5% identity) with Virgisporangium ochraceum NBRC 16418T. The strain grew in the presence of 0-1% (w/v) NaCl, at pH 5-8 and at 20-40 °C, with optimal growth at 30-37 °C. Based on phylogenetic analysis and chemotaxonomic and phenotypic data, we propose classifying this isolate as a novel species of the genus Virgisporangium, to be designated as Virgisporangium myanmarense sp. nov. The type strain is MM04-1133T (=NBRC 112733T=VTCC 910008T).

MeSH terms

  • Aerobiosis
  • Base Composition
  • Cluster Analysis
  • Cytosol / chemistry
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • DNA, Ribosomal / chemistry
  • DNA, Ribosomal / genetics
  • Fatty Acids / analysis
  • Hydrogen-Ion Concentration
  • Locomotion
  • Micromonosporaceae / classification*
  • Micromonosporaceae / genetics
  • Micromonosporaceae / isolation & purification*
  • Micromonosporaceae / physiology
  • Myanmar
  • Phospholipids / analysis
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Sodium Chloride / metabolism
  • Soil Microbiology
  • Temperature
  • Vitamin K 2 / analysis

Substances

  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • Phospholipids
  • RNA, Ribosomal, 16S
  • Vitamin K 2
  • Sodium Chloride