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Brevibacterium yomogidense sp. nov., isolated from a soil conditioner made from poultry manure

Akio Tonouchi1, Koji Kitamura1, Takashi Fujita1

  • 1Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori, 036-8561, Japan.

International Journal of Systematic and Evolutionary Microbiology
|April 24, 2012
PubMed

Insights

A novel soil actinobacterium, Brevibacterium yomogidense sp. nov., was identified from poultry manure. This discovery expands the known diversity of Brevibacterium, offering new insights into soil microbial communities.

Area of Science:

  • Microbiology
  • Actinobacteria research
  • Soil science

Background:

  • Soil conditioners, particularly those derived from poultry manure, host diverse microbial communities.
  • Actinobacteria play crucial roles in nutrient cycling and soil health.
  • The genus Brevibacterium comprises various species with diverse ecological roles.

Purpose of the Study:

  • To isolate and characterize a novel actinobacterium from a poultry manure-derived soil conditioner.
  • To determine the phylogenetic and chemotaxonomic properties of the novel isolate.
  • To formally propose a new species within the genus Brevibacterium.

Main Methods:

  • Isolation and cultivation of actinobacteria from soil conditioner.
  • Gram staining, morphology, and biochemical characterization.
  • Fatty acid, menaquinone, and polar lipid analysis.
  • 16S rRNA gene sequencing and phylogenetic analysis.
  • DNA-DNA hybridization for genomic relatedness assessment.

Main Results:

  • A novel Gram-positive, rod-shaped actinobacterium, strain MN-6-a(T), was isolated.
  • Chemotaxonomic analysis revealed major fatty acids anteiso-C(15:0) and anteiso-C(17:0), menaquinones MK-7(H2) and MK-8(H2), and phosphatidylglycerol.
  • Phylogenetic analysis indicated close relatedness to Brevibacterium salitolerans (97.1% 16S rRNA gene similarity).
  • DNA-DNA hybridization confirmed low genomic relatedness (10.2%) with B. salitolerans TRM 415(T).
  • The G+C content of the genomic DNA was 67.4 mol%.

Conclusions:

  • Strain MN-6-a(T) represents a distinct species within the genus Brevibacterium.
  • Based on phenotypic, phylogenetic, and chemotaxonomic data, the name Brevibacterium yomogidense sp. nov. is proposed.
  • The type strain is MN-6-a(T) (= JCM 17779(T) = DSM 24850(T)).

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