Mucilaginibacter pedocola sp. nov., isolated from a heavy-metal-contaminated paddy field

Int J Syst Evol Microbiol. 2016 Oct;66(10):4033-4038. doi: 10.1099/ijsem.0.001306. Epub 2016 Jul 13.

Abstract

Strain TBZ30T was isolated from soil of a heavy-metal-contaminated paddy field. Cells of strain TBZ30T were Gram-staining-negative, rod-shaped, non-motile and non-spore-forming. The isolate was strictly aerobic, pink-pigmented, catalase- and oxidase-positive and produced exopolysaccharides. On the basis of 16S rRNA gene phylogeny, strain TBZ30T belonged to the genus Mucilaginibacter and appeared most closely related to Mucilaginibacter gynuensis YC7003T (95.8 %), Mucilaginibacter litoreus BR-18T (95.4 %) and Mucilaginibacter mallensis MP1X4T (95.4 %). Strain TBZ30T contained menaquinone-7 as the only ubiquinone. The main cellular fatty acids included summed feature 3 (C16 : 1ω7c and/or iso-C15 : 0 2-OH), iso-C15 : 0, C16 : 0, iso-C17 : 0 3-OH and C16 : 1ω5c. The polar lipids were phosphatidylethanolamine, an unidentified phospholipid, two unidentified aminophospholipids, four unidentified aminolipids, three unidentified lipids and two unidentified glycolipids. The genomic DNA G+C content was 49.0 mol%. On the basis of polyphasic taxonomy analyses, strain TBZ30T represents a novel species of the genus Mucilaginibacter, for which the name Mucilaginibacter pedocola sp. nov. is proposed. The type strain is TBZ30T (=KCTC 42833T=CCTCC AB 2015301T).

MeSH terms

  • Bacterial Typing Techniques
  • Bacteroidetes / classification*
  • Bacteroidetes / genetics
  • Bacteroidetes / isolation & purification
  • Base Composition
  • DNA, Bacterial / genetics
  • Fatty Acids / chemistry
  • Metals, Heavy
  • Oryza*
  • Phospholipids / chemistry
  • Phylogeny*
  • Pigmentation
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Soil Microbiology*
  • Soil Pollutants
  • Vitamin K 2 / analogs & derivatives
  • Vitamin K 2 / chemistry

Substances

  • DNA, Bacterial
  • Fatty Acids
  • Metals, Heavy
  • Phospholipids
  • RNA, Ribosomal, 16S
  • Soil Pollutants
  • Vitamin K 2
  • menaquinone 7