Cohnella phaseoli sp. nov., isolated from root nodules of Phaseolus coccineus in Spain, and emended description of the genus Cohnella

Int J Syst Evol Microbiol. 2008 Aug;58(Pt 8):1855-9. doi: 10.1099/ijs.0.65468-0.

Abstract

A bacterial strain designated GSPC1 T was isolated from root nodules of Phaseolus coccineus in Segovia (Spain). The 16S rRNA gene sequence of this strain showed 95.9 and 94.7 % sequence similarity, respectively, with those of the type strains of Cohnella hongkongensis and Cohnella thermotolerans. Strain GSPC1 T presented phenotypic, chemotaxonomic and molecular differences with respect to Cohnella species which indicated that it belonged to a different species. The isolate was a Gram-positive, aerobic, sporulated rod, motile by means of peritrichous flagella. The strain was catalase-positive and showed weak oxidase activity. It grew in the presence of 2 % NaCl. MK-7 was the predominant menaquinone. anteiso-C15:0, iso-C15:0, iso-C16: 0 and C16:0 were the major fatty acids. Major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The G+C content was 60.3 mol%. The results of this study suggest that isolate GSPC1 T should be classified within a novel Cohnella species, for which the name Cohnella phaseoli sp. nov. is proposed, with strain GSPC1T (=LMG 24086T =DSM 19269T) as the type strain.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Typing Techniques
  • Base Composition
  • DNA, Bacterial / analysis
  • DNA, Ribosomal / analysis
  • Fatty Acids / analysis
  • Genes, rRNA
  • Gram-Positive Endospore-Forming Rods / classification*
  • Gram-Positive Endospore-Forming Rods / genetics
  • Gram-Positive Endospore-Forming Rods / isolation & purification
  • Gram-Positive Endospore-Forming Rods / physiology
  • Molecular Sequence Data
  • Phaseolus / microbiology*
  • Phenotype
  • Phylogeny
  • Plant Roots / microbiology
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Spain
  • Species Specificity

Substances

  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • RNA, Ribosomal, 16S

Associated data

  • GENBANK/EU014872