Kribbella qitaiheensis sp. nov., a novel actinomycete isolated from soil

Antonie Van Leeuwenhoek. 2015 Jun;107(6):1533-9. doi: 10.1007/s10482-015-0446-y. Epub 2015 Apr 5.

Abstract

A novel nocardioform actinomycete, designated strain NEAU-GQTH2-3(T), was isolated from muddy soil collected from a stream in Qitaihe, Heilongjiang Province, northeast China and characterized using a polyphasic approach. Phylogenetic analysis based on the 16S rRNA gene sequence demonstrated that the organism should be assigned to the genus Kribbella and forms a clade with Kribbella catacumbae JCM 14968(T) (99.2 % sequence similarity), Kribbella koreensis JCM 10977(T) (99.1 %), Kribbella ginsengisoli JCM 16928(T) (98.6 %) and Kribbella sancticallisti JCM 14969(T) (98.4 %), although with low bootstrap support. Morphological and chemotaxonomic properties of the isolate are in agreement with the description of the genus Kribbella. Chemotaxonomic characteristics include LL-diaminopimelic acid in the cell-wall peptidoglycan; glucose and ribose as the characteristic whole-cell hydrolysates; diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, phosphatidylinositol, a glycerolipid and an unidentified phospholipid as the predominant polar lipids; the major menaquinones MK-9(H4) and MK-9(H2); as well as iso-C15:0, iso-C16:0 and C17:1 ω7c being the predominant fatty acid components. Mycolic acids were not detected. Furthermore, the strain could be clearly distinguished by the combination of DNA-DNA hybridization results and some phenotypic characteristics from the closest phylogenetic relatives. Therefore, it is proposed that strain NEAU-GQTH2-3(T) represents a novel species of the genus Kribbella, for which the name Kribbella qitaiheensis sp. nov. is proposed. The type strain is NEAU-GQTH2-3(T) (=CGMCC 4.7215(T) =JCM 30343(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actinobacteria / classification*
  • Actinobacteria / genetics
  • Actinobacteria / isolation & purification*
  • Actinobacteria / physiology
  • Bacterial Typing Techniques
  • Cell Wall / chemistry
  • China
  • Cluster Analysis
  • Cytosol / chemistry
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • DNA, Ribosomal / chemistry
  • DNA, Ribosomal / genetics
  • Diaminopimelic Acid / analysis
  • Fatty Acids / analysis
  • Geologic Sediments / microbiology
  • Glucose / analysis
  • Molecular Sequence Data
  • Nucleic Acid Hybridization
  • Peptidoglycan / analysis
  • Phospholipids / analysis
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Ribose / analysis
  • Sequence Analysis, DNA
  • Soil Microbiology*
  • Vitamin K 2 / analysis

Substances

  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • Peptidoglycan
  • Phospholipids
  • RNA, Ribosomal, 16S
  • Vitamin K 2
  • Diaminopimelic Acid
  • Ribose
  • Glucose

Associated data

  • GENBANK/KM094178