Sphaerosporangium gen. nov., a new member of the family Streptosporangiaceae, with descriptions of three new species as Sphaerosporangium melleum sp. nov., Sphaerosporangium rubeum sp. nov. and Sphaerosporangium cinnabarinum sp. nov., and transfer of Streptosporangium viridialbum Nonomura and Ohara 1960 to Sphaerosporangium viridialbum comb. nov.

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The taxonomic status of five actinomycete strains, 3-28(8)<SUP>T</SUP>, 4-20(13), 3D-70(20), 5-81(36) and 3D-72(35)<SUP>T</SUP>, isolated from sandy soil was studied using the polyphasic approach. All isolates produced branching substrate mycelia and developed spherical spore vesicles on aerial hyphae containing non-motile spores. They contained <I>meso</I>-diaminopimelic acid and the <I>N</I>-acetyl type of peptidoglycan. The predominant menaquinones were MK-9(H<SUB>4</SUB>) and MK-9(H<SUB>6</SUB>). Madurose, mannose, ribose, galactose and glucose were detected in the whole-cell hydrolysate. The diagnostic phospholipids were phosphatidylethanolamine and ninhydrin-positive phosphoglycolipids, and iso-C<SUB>16:0</SUB> and 10 methyl C<SUB>17:0</SUB> were detected as the major cellular fatty acids. These morphological and chemotaxonomic data were related to those of the genus <I>Streptosporangium</I> in the family <I>Streptosporangiaceae</I>. Phylogenetic analysis based on 16S rDNA sequence data suggested that the strains belong to the family <I>Streptosporangiaceae</I>, but not to any known genus, and form a monophyletic clade with <I>Streptosporangium viridialbum</I> and "<I>Streptosporangium cinnabarinum</I>". The signature nucleotides of the members of this clade are different from those of any known genera of the family <I>Streptosporangiaceae</I>. On the basis of phylogenetic analysis and the characteristic patterns of signature nucleotides as well as the morphological and chemotaxonomic data, the genus <I>Sphaerosporangium</I> gen. nov. is proposed for our five isolates and the type strains of <I>Streptosporangium viridialbum</I> and "<I>Streptosporangium cinnabarinum</I>". DNA–DNA hybridization and phenotypic characterization indicate that the new genus comprises four species, <I>Sphaerosporangium melleum</I> sp. nov. with the type strain 3-28(8)<SUP>T</SUP> (=JCM 13064<SUP>T</SUP> =DSM 44954<SUP>T</SUP>), <I>Sphaerosporangium rubeum</I> sp. nov. with the type strain 3D-72(35)<SUP>T</SUP> (=JCM 13067<SUP>T</SUP> =DSM 44936<SUP>T</SUP>), <I>Sphaerosporangium cinnabarinum</I> sp. nov. (=JCM 3291 =DSM 44094) and <I>Sphaerosporangium viridialbum</I> comb. nov. (=JCM 3027<SUP>T</SUP> =DSM 43801<SUP>T</SUP>).

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  • 日本放線菌学会誌  

    日本放線菌学会誌 21(1), 11-21, 2007-06-25 

    The Society for Actinomycetes Japan

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各種コード

  • NII論文ID(NAID)
    10018920939
  • NII書誌ID(NCID)
    AN10080091
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09145818
  • NDL 記事登録ID
    8882117
  • NDL 雑誌分類
    ZR5(科学技術--生物学--菌類・微生物)
  • NDL 請求記号
    Z18-1070
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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