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  • Title: Actinokineospora guangxiensis sp. nov., isolated from soil.
    Author: Wu H, Liu B.
    Journal: Int J Syst Evol Microbiol; 2015 Dec; 65(12):4650-4654. PubMed ID: 26410559.
    Abstract:
    A novel actinomycete, designated strain GK-6T, was isolated from a soil sample from Nanning, Guangxi province, PR China. The strain grew at 20-40 °C, pH 6.0-11.0 and with 0-7.0 % NaCl. It formed well-developed aerial and vegetative mycelia. The aerial mycelium was white and the vegetative mycelium was yellow. The long branching aerial mycelia yielded rod-shaped arthrospores, the spores had smooth surfaces and were non-motile. Strain Gk-6T contained meso-diaminopimelic acid as the diagnostic diamino acid, the whole-cell sugars were galactose, glucose and arabinose. Major fatty acids were iso-C16 : 0, iso-C15 : 0 and C17 : 0. MK-9(H4) was the predominant menaquinone. The polar phospholipids were phosphatidylethanolamine, phosphatidylethanolamine-containing hydroxylated fatty acids, diphosphatidylglycerol, ninhydrin-positive glycophospholipid and an unknown phospholipid. The G+C content of the genomic DNA was 73.4 mol%. The 16S rRNA gene sequence analysis indicated that the organism was a member of the genus Actinokineospora and its closest relative among recognized species was Actinokineospora soli JCM 17695T (97.7 % sequence similarity). But the phenotypic characteristics of strain Gk-6T were significantly different from those of A. soli JCM 17695T, and DNA-DNA hybridization showed low relatedness (22.6-28.3 %) between strain Gk-6T and JCM 17695T. On the basis of the phenotypic and phylogenetic data, strain Gk-6T represents a novel species of the genus Actinokineospora, and the name Actinokineospora guangxiensis sp. nov. is proposed. The type strain is Gk-6T ( = DSM 46779 T = CGMCC 4.7154T).
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