Taxonomic characterization of Sphaerotilus microaerophilus sp. nov., a sheath-forming microaerophilic bacterium of activated sludge origin.

ABSTRACT: A microaerophilic Gram-stain-negative bacilliform bacterial strain, FB-5 ^T, was isolated from activated sludge in Yokohama, Japan, that exhibited filamentous growth and formed a microtube (sheath). Cells were motile using a single polar flagellum. The optimum growth temperature and pH were 30 °C and 7.5, respectively. Strain FB-5 ^T was catalase-negative. Peptides and amino acids were utilized as energy and carbon sources. Sugars and organic acids were not utilized. Vitamin B₁₂ enhanced the growth of strain FB-5 ^T. Sulfur-dependent lithotrophic growth was possible. Major respiratory quinone was UQ-8. Major fatty acids were C_16:1ω7 and C_16:0. The genomic DNA G + C content was 69.16%. Phylogenetic analysis of the 16S rRNA gene

SUBMITTER: Narihara S 

PROVIDER: S-EPMC11087309 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature