gen. nov., sp. nov., a novel actinomycete from a desert soil in north-west China Free

Abstract

A novel actinomycete strain, designated YIM 002, was isolated from a desert soil sample in Gansu Province, north-west China. This actinomycete isolate formed well-differentiated aerial and substrate mycelia. In the early stages of growth, the substrate mycelia fragmented into short or elongated rods. Chemotaxonomically, it contained -2,6-diaminopimelic acid in the cell wall. The cell-wall sugars contained ribose and glucose. Phospholipids present were phosphatidylinositol mannosides, phosphatidylinositol and diphosphatidylglycerol. MK-9(H) was the predominant menaquinone. The major fatty acids were anteiso C (35·92 %), anteiso C (15·84 %), iso C (10·40 %), iso C (7·07 %) and C 8 (9·37 %). The G+C content of the DNA was 70 mol%. Phylogenetic analysis and signature nucleotide data based on 16S rRNA gene sequences showed that strain YIM 002 is distinct from all recognized genera of the family in the suborder . On the basis of the phenotypic and genotypic characteristics, it is proposed that isolate YIM 002 be classified as a novel species in a new genus, gen. nov., sp. nov. The type strain is YIM 002 (=DSM 44835=CCTCC AA 204001=KCTC 19044).

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2005-03-01
2024-03-28
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