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Devosia pacifica sp. nov., isolated from deep-sea sediment.

Yan-Yu Jia1, Cong Sun1, Jie Pan1

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International Journal of Systematic and Evolutionary Microbiology
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A novel aerobic bacterium, Devosia pacifica NH131(T), was discovered in the South China Sea. This Gram-negative, rod-shaped bacterium represents a new species within the Devosia genus.

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Area of Science:

  • Microbiology
  • Marine Biology
  • Bacteriology

Background:

  • Deep-sea environments harbor diverse microbial life.
  • The genus Devosia comprises Gram-negative bacteria with various metabolic capabilities.
  • Exploration of novel bacterial species is crucial for understanding marine ecosystems.

Purpose of the Study:

  • To isolate and characterize a novel bacterial strain from deep-sea sediment.
  • To determine the taxonomic affiliation of the novel strain using polyphasic identification.
  • To propose a new species within the genus Devosia.

Main Methods:

  • Isolation of bacteria from deep-sea sediment samples.
  • Morphological, physiological, and biochemical characterization.
  • 16S rRNA gene sequence analysis for phylogenetic placement.
  • Analysis of cellular fatty acids, ubiquinone, polar lipids, and DNA G+C content.

Main Results:

  • A novel strictly aerobic, Gram-stain-negative, short rod-shaped bacterium, strain NH131(T), was isolated.
  • Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain NH131(T) belongs to the genus Devosia, with highest similarity (96.2%) to Devosia geojensis BD-c194(T).
  • Chemotaxonomic data, including fatty acid composition and DNA G+C content (63.0 mol%), supported its classification as a distinct species.

Conclusions:

  • Strain NH131(T) represents a novel species of the genus Devosia.
  • The proposed name for the novel species is Devosia pacifica sp. nov.
  • The type strain is NH131(T) (=JCM 19305(T) =KCTC 32437(T)).