1887

Abstract

A catalase-negative actinomycete, strain YIM 21741, was isolated from a soil sample collected from a primeval forest at Xishuangbanna, Yunnan Province, China. Analysis of 16S rDNA showed the strain to be related to members of the genus , with which it also shares morphological characteristics, e.g. branching hyphae breaking into diphtheroid and rod-like, irregular, non-motile fragments and a peptidoglycan containing the diagnostic amino acid 2,4-diamino--butyric acid. Whole-cell hydrolysates of strain YIM 21741 contained rhamnose and small quantities of glucose, galactose and mannose. The major menaquinone was MK-12, while MK-13 and MK-12 were minor components. Diagnostic phospholipids were phosphatidylglycerol and diphosphatidylglycerol. The G+C content of the DNA was 72·8 mol%. Physiological and biochemical characteristics reveal strain YIM 21741 to be different from all validly described species of the genus . As DNA–DNA similarity values between this isolate and the phylogenetically neighbouring type strains of and are only moderate, the novel species sp. nov. is proposed with strain YIM 21741 (=CCTCC 001012 =AS 4.1717 =DSM 14598) as the type strain.

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2003-01-01
2024-10-14
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