Sphingobacterium pakistanensis sp. nov., a novel plant growth promoting rhizobacteria isolated from rhizosphere of Vigna mungo

Antonie Van Leeuwenhoek. 2014 Feb;105(2):325-33. doi: 10.1007/s10482-013-0077-0. Epub 2013 Nov 27.

Abstract

The taxonomic status of a bacterium, strain NCCP-246(T), isolated from rhizosphere of Vigna mungo, was determined using a polyphasic taxonomic approach. The strain NCCP-246(T) can grow at 16-37 °C (optimum 32 °C), at pH ranges of 6-8 (optimum growth occurs at pH 7) and in 0-4 % (w/v) NaCl. Phylogenetic analysis based upon on 16S rRNA gene sequence comparison revealed that strain NCCP-246(T) belonged to genus Sphingobacterium. Strain NCCP-246(T) showed highest similarity to the type strain of Sphingobacterium canadense CR11(T) (97.67 %) and less than 97 % with other species of the genus. The DNA-DNA relatedness value of strain NCCP-246(T) with S. canadense CR11(T) and Sphingobacterium thalpophilum JCM 21153(T) was 55 and 44.4 %, respectively. The chemotaxonomic data revealed the major menaquinone as MK-7 and dominant cellular fatty acids were summed feature 3 [C16:1 ω7c/C16:1 ω6c] (37.07 %), iso-C15:0 (28.03 %), C16:0 (11.85 %), C17:0 cyclo (8.84 %) and C14:0 (2.42 %). The G+C content of the strain was 39.2 mol%. On the basis of DNA-DNA hybridization, phylogenetic analyses, physiological and, biochemical data, strain NCCP-246(T) can be differentiated from the validly named members of genus Sphingobacterium and thus represents as a new species, for which the name, Sphingobacterium pakistanensis sp. nov. is proposed with the type strain NCCP-246(T) (= JCM18974 (T) = KCTC 23914(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Typing Techniques
  • Base Composition
  • Cluster Analysis
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • DNA, Ribosomal / chemistry
  • DNA, Ribosomal / genetics
  • Fabaceae / microbiology*
  • Fatty Acids / analysis
  • Molecular Sequence Data
  • Nucleic Acid Hybridization
  • Phylogeny
  • Plant Growth Regulators / metabolism*
  • Quinones / analysis
  • RNA, Ribosomal, 16S / genetics
  • Rhizosphere*
  • Sequence Analysis, DNA
  • Soil Microbiology*
  • Sphingobacterium / classification*
  • Sphingobacterium / genetics
  • Sphingobacterium / isolation & purification*
  • Sphingobacterium / metabolism

Substances

  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • Plant Growth Regulators
  • Quinones
  • RNA, Ribosomal, 16S

Associated data

  • GENBANK/AB610802
  • RefSeq/NR_113311