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Sphingobium fluviale sp. nov., isolated from a river.

Shih-Yi Sheu1, Ya-Ping Guo1, Soon-Wo Kwon2

  • 1Department of Marine Biotechnology, National Kaohsiung University of Science and Technology, No. 142, Hai-Chuan Rd. Nan-Tzu, Kaohsiung City 811, Taiwan, ROC.

International Journal of Systematic and Evolutionary Microbiology
|November 2, 2019
PubMed
Summary

A novel aerobic bacterium, Sphingobium fluviale CHR27, was identified. This research details its unique characteristics and phylogenetic placement within the Sphingobium genus.

Keywords:
AlphaproteobacteriaSphingobium fluviale sp. nov.SphingomonadaceaeSphingomonadales

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Area of Science:

  • Microbiology
  • Bacterial Taxonomy
  • Genomics

Background:

  • The genus Sphingobium comprises bacteria with diverse metabolic capabilities.
  • Accurate taxonomic classification is crucial for understanding microbial diversity and function.

Purpose of the Study:

  • To isolate and characterize a novel bacterial strain.
  • To determine the phylogenetic position and taxonomic status of the novel strain within the genus Sphingobium.

Main Methods:

  • Polyphasic taxonomy approach, including 16S rRNA gene sequencing and core gene set analysis.
  • Phylogenetic analyses, digital DNA-DNA hybridization, and average nucleotide identity calculations.
  • Phenotypic characterization, including fatty acid analysis, polar lipid profiling, and polyamine analysis.

Main Results:

  • Strain CHR27 was identified as a Gram-stain-negative, rod-shaped, aerobic bacterium.
  • Phylogenetic analyses placed strain CHR27 within the genus Sphingobium, closely related to Sphingobium qiguonii.
  • Distinct digital DNA-DNA hybridization and average nucleotide identity values supported its classification as a new species.
  • Key phenotypic features, including major fatty acids and polar lipids, were identified.

Conclusions:

  • Strain CHR27 represents a novel species within the genus Sphingobium.
  • The proposed name for this new species is Sphingobium fluviale sp. nov.
  • The type strain is CHR27T (=BCRC 81121T=LMG 30596T=KCTC 62510T).