1887

Abstract

A Gram-positive-staining, non-endospore-forming actinobacterium, designated C7, was isolated from the leaf surface of . On the basis of 16S rRNA gene sequence analysis, strain C7 was shown to belong to the genus and was most closely related to SJS0289/JS1 (98.0 % 16S rRNA gene sequence similarity), IMMIB RIV-956 (96.4 %) and IMMIB SR-4 (95.7 %). The quinone system consisted predominantly of the menaquinones MK-9(H), MK-8(H) and MK-7(H). The major components in the polar lipid profile were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylinositol. Mycolic acids were present. These chemotaxonomic traits and the major fatty acids, which were Cω7, C, C, Cω9 and tuberculostearic acid, supported the affiliation of strain C7 with the genus . Physiological and biochemical analysis revealed clear differences between strain C7 and its closest phylogenetic neighbours. Therefore, strain C7 represents a novel species, for which the name sp. nov. is proposed. The type strain is C7 ( = CCUG 60465 = CCM 7855).

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2011-11-01
2020-01-28
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