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Abstract

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

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2010-07-01
2019-10-21
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Maximum-parsimony tree (close-neighbour interchange; search level=2, random addition=100) showing the relationship of strain CAP 290 to related members of the genus . [PDF](41 KB)

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Scanning electron micrograph of strain CAP 290 grown on ISP 2 at 27 °C for 21 days. Bar, 1 µm.

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