Huakuichenia soli gen. nov., sp. nov., a new member of the family Microbacteriaceae, isolated from contaminated soil

Int J Syst Evol Microbiol. 2016 Dec;66(12):5399-5405. doi: 10.1099/ijsem.0.001531. Epub 2016 Sep 29.

Abstract

A novel Gram-stain-positive, non-motile, rod-shaped bacterial strain designated LIP-1T was isolated from the contaminated soil of a pesticide factory in Xinyi, China, was investigated for its taxonomic allocation by a polyphasic approach. Cell growth occurred at 16-37 °C (optimum, 30 °C), in the presence of 0-2.0 % (w/v) NaCl (optimum, 0 %) and at pH 6.0-9.0 (optimum, pH 7.0). The major fatty acids of strain LIP-1T were anteiso-C15 : 0 (50.8 %), iso-C16 : 0 (17.6 %) and anteiso-C17 : 0 (17.4 %). The cell-wall peptidoglycan type was B2δ with 2,4-diaminobutyric acid as the diagnostic diamino acid. The major polar lipids were diphosphatidylglycerol and two unidentified glycolipids. The major menaquinones were MK-12 and MK-11. The genomic DNA G+C content was approximately 63.8 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain LIP-1T formed a distinct clade within the radiation of the family Microbacteriaceae and had the highest sequence similarity with Microbacterium ginsengisoli Gsoil 259T (96.01 %) followed by Cryobacterium arcticum SK1T (94.94 %). On the basis of the phylogenetic analyses and distinct phenotypic characteristics, a new genus, namely Huakuichenia gen. nov., is proposed, harbouring the novel species Huakuichenia soli gen. nov., sp. nov. with the type strain LIP-1T (=CCTCC AB 2015422T=KCTC 39698T).

MeSH terms

  • Actinomycetales / classification*
  • Actinomycetales / genetics
  • Actinomycetales / isolation & purification
  • Aminobutyrates / chemistry
  • Bacterial Typing Techniques
  • Base Composition
  • Cell Wall / chemistry
  • China
  • DNA, Bacterial / genetics
  • Environmental Pollution
  • Fatty Acids / chemistry
  • Glycolipids / chemistry
  • Peptidoglycan / chemistry
  • Phylogeny*
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Soil / chemistry
  • Soil Microbiology*

Substances

  • Aminobutyrates
  • DNA, Bacterial
  • Fatty Acids
  • Glycolipids
  • Peptidoglycan
  • RNA, Ribosomal, 16S
  • Soil
  • 2,4-diaminobutyric acid