Sphingobacterium thermophilum sp. nov., of the phylum Bacteroidetes, isolated from compost

Shuhei Yabe, Yoshifumi Aiba, Yasuteru Sakai, Masaru Hazaka, Kazuyoshi Kawahara, Akira Yokota

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25 Citations (Scopus)


A Gram-negative bacterium, designated CKTN2T, was isolated from compost. Cells of strain CKTN2T were strictly aerobic rods. The isolate grew at 20-50 °C (optimum 40-45 °C), but not below 15 °C or above 52 °C, and at pH 5.9-8.8 (optimum pH 7.0), but not below pH 5.4 or above pH 9.3. The DNA G+C content was 40.3 mol%. The predominant menaquinone was MK- 7. The major fatty acids were iso-C15:0 (45.2 %), iso-C17:0 3-OH (11.1 %) and C18: 0 (14.5 %). Analysis of the 16S rRNA gene sequence of strain CKTN2T revealed that it is a member of the genus Sphingobacterium and is most closely related to Sphingobacterium alimentarium DSM 22362T (93.2% 16S rRNA gene sequence similarity). Strain CKTN2T could be distinguished from its closest phylogenetic relatives by different phenotypic characteristics. According to the phenotypic and genotypic characteristics, strain CKTN2T represents a novel species of the genus Sphingobacterium, for which the name Sphingobacterium thermophilum sp. nov. is proposed. The type strain is CKTN2T (5JCM 17858T 5KCTC 23708T).

Original languageEnglish
Pages (from-to)1584-1588
Number of pages5
JournalInternational journal of systematic and evolutionary microbiology
Issue numberPART 5
Publication statusPublished - 2013 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics


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