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  • Title: Nocardioides yefusunii sp. nov., isolated from Equus kiang (Tibetan wild ass) faeces.
    Author: Huang Y, Wang X, Yang J, Lu S, Lai XH, Jin D, Pu J, Huang Y, Ren Z, Zhu W, Meng J, Dong K, Ge Y, Zhou J, Zhang G, Zhang S, Lei W, Liang H, Xu J.
    Journal: Int J Syst Evol Microbiol; 2019 Nov; 69(11):3629-3635. PubMed ID: 31511125.
    Abstract:
    Two Gram-stain-positive, irregular rod-shaped (0.2-0.5×1.3-2.5 um) strains, HY056T and HY057, were isolated from the faeces of Equus kiang (the largest of the wild asses) collected at different regions from the Qinghai-Tibetan Plateau of PR China. Phylogenetic analyses indicated that strains HY056T and HY057 belong to the genus Nocardioides by sharing a similarity ranging from 96.3 to 97.0 % in the 16S rRNA gene sequence and forming a distinct cluster with Nocardioides daphniae JCM 16608T, Nocardioides houyundeii 78T, Nocardioides solisilvae Ka25T and Nocardioides gilvus XZ17T. The digital DNA-DNA hybridization value of strain HY056T was 96.9 % with strain HY057, but less than 30.0 % with the above four closest relatives. MK-8(H4) was the predominant (91.6 %) respiratory quinone. The cell wall contained ll-2,6-diaminopimelic acid as the diamino acid of the peptidoglycan. The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and phospholipid. The predominant fatty acids (>10.0 %) were C18 : 1ω9c and iso-C16:0. The DNA G+C contents of strains HY056T and HY057 were 68.9 and 69.1 mol%, respectively. β-Glucosidase expression was positive, and acid was produced from d-fructose. Strain HY056T (=CGMCC 4.7563T=JCM 33399T) is assigned as the type strain of a novel species within the genus Nocardioides, for which the name Nocardioidesyefusunii sp. nov is proposed.
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