Nocardia callitridis sp. nov., an endophytic actinobacterium isolated from a surface-sterilized root of an Australian native pine tree

Onuma Kaewkla, Christopher Franco

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    A novel actinobacterium strain, CAP 290T, was isolated from a surface-sterilized root of an Australian native pine tree, Callitris preissii. Comparative 16S rRNA gene sequence analysis showed that the strain belongs to the family Nocardiaceae. Strain CAP 290T was most closely related to Nocardia nova JCM 6044T (97.4% 16S rRNA gene sequence similarity) and Nocardia terpenica IFM 0706T (96.7 %); similarity to other type strains of the genus Nocardia ranged from 95 to 97 %. Chemotaxonomic data [meso-diaminopimelic acid, major menaquinone MK-8(H4ωcycl.), major fatty acid C16 : 0 and mycolate in the cell wall] confirmed the affiliation of strain CAP 290T to the genus Nocardia. The results of the phylogenetic analysis, together with the physiological and biochemical tests, allowed the differentiation of strain CAP 290T from strains of other Nocardia species. Therefore, strain CAP 290T represents a novel species, the first endophytic actinobacterium to be identified as belonging to the genus Nocardia, for which the name Nocardia callitridis sp. nov. is proposed. The type strain is strain CAP 290T (=DSM 45353 T =ACM 5287T).

    Original languageEnglish
    Pages (from-to)1532-1536
    Number of pages5
    JournalInternational Journal of Systematic and Evolutionary Microbiology
    Volume60
    Issue number7
    DOIs
    Publication statusPublished - Jul 2010

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