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Title: Nocardiopsis akesuensis sp. nov., an actinomycete isolated from a salt water beach. Author: Gao GB, Luo XX, Xia ZF, Zhang Y, Wan CX, Zhang LL. Journal: Int J Syst Evol Microbiol; 2016 Dec; 66(12):5005-5009. PubMed ID: 27565851. Abstract: The taxonomic position of a novel actinomycete, strain TRM 46250T, isolated from the sediment of a salt water beach at Baicheng, Xinjiang, China, was determined by a polyphasic approach. Strain TRM 46250T grew optimally in the presence of 2 % (w/v) NaCl and an optimum temperature range for growth of 28-37 °C. The whole-cell sugars of strain TRM 46250T were ribose, xylose, mannose and galactose. The diagnostic diamino acid was meso-diaminopimelic acid. The polar lipids were phosphatidylinositol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylmethyl ethanolamine and six unidentified phospholipids. The predominant menaquinones were MK-10, MK-10(H6) and MK-10(H8). The major fatty acids were 10-methyl C18 : 0, iso-C16 : 0, C16 : 0, iso-G C16 : 1 and C18 : 1ω9c. Based on morphological and chemotaxonomic characteristics the isolate was determined to belong to the genus Nocardiopsis. The phylogenetic tree based on its nearly complete 16S rRNA gene sequence (1493 nt) with those of representative strains showed that the strain consistently falls into a distinct phyletic line together with Nocardiopsis gilva YIM 90087T (97.68 % similarity) and a subclade consisting of Nocardiopsis composta KS9T (97.52 %), Nocardiopsis rosea YIM 90094T (97.44 %) and Nocardiopsis rhodophaea YIM 90096T (97.16 %). However, DNA-DNA hybridization studies between strain TRM 46250T and N. gilva YIM 90087T showed only 36.94 % relatedness. On the basis of these data, strain TRM 46250T should be designated as a representative of a novel species of the genus Nocardiopsis, for which the name Nocardiopsis akesuensis sp. nov. is proposed. The type strain is TRM 46250T (=CCTCC AA 2015027T=KCTC 39725T).[Abstract] [Full Text] [Related] [New Search]