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  • Title: Gluconobacter sphaericus (Ameyama 1975) comb. nov., a brown pigment-producing acetic acid bacterium in the Alphaproteobacteria.
    Author: Malimas T, Yukphan P, Takahashi M, Muramatsu Y, Kaneyasu M, Potacharoen W, Tanasupawat S, Nakagawa Y, Tanticharoen M, Yamada Y.
    Journal: J Gen Appl Microbiol; 2008 Aug; 54(4):211-20. PubMed ID: 18802320.
    Abstract:
    Strain NBRC 12467T was examined genetically, phylogenetically, phenotypically, and chemotaxonomically. The DNA G+C content of the strain was 59.5 mol%. The strain represented low levels of DNA-DNA hybridization of 49-9% to the type strains of eight Gluconobacter species. The strain formed a cluster along with the type strains of G. albidus and G. kondonii in phylogenetic trees based on 16S rRNA gene sequences. In a phylogenetic tree based on 16S-23S rRNA gene ITS sequences, however, the strain formed an independent cluster from the type strains of the eight Gluconobacter species. Such phylogenetic relationships were supported by the calculated pair-wise 16S rRNA gene and 16S-23S rRNA gene ITS sequence similarities. The strain was distinguished from the type strains of the eight Gluconobacter species by 16S-23S rRNA gene ITS restriction analysis using five restriction endonucleases. The strain produced a water-soluble brown pigment and 2,5-diketo-D-gluconate from D-glucose, differing from the type strains of the eight Gluconobacter species, and acid from meso-erythritol very weakly, differing from the type strains of the remaining seven Gluconobacter species except for the type strain of G. roseus, but not from maltose, differing from the type strain of G. oxydans, and had Q-10. For the strain, which was once classified as G. oxydans subsp. sphaericus, Gluconobacter sphaericus (Ameyama 1975) comb. nov. is proposed. The type strain is NBRC 12467T, which is also deposited as BCC 14448T.
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