
Full text loading...
A strain with aerial hyphae presented, designated KC 131T, was isolated from lead–zinc mine tailings, Lanping, Yunnan province, Southwest China. The strain was Gram-stain-positive, acid-alcohol-fast, aerobic and non-motile. Based on 16S rRNA gene sequence and phylogeny analysis, strains Nocardia ninae NBRC 108245T (98.4%), Nocardia alba YIM 30243T (98.4%) and Nocardia colli CICC 11023T (98.2%) were the most closely related species of strain KC 131T, and the four strains were in one cluster. The meso-diaminopimelic acid, arabinose and galactose were detected in the whole-cell hydrolysates. The mycolic acids were presented, and the major fatty acids (>5%) were C16:0 (30.0%), C18:1 ω9c (12.5%), C18:0 (7.5%), 10-methyl C18:0 (27.3%) and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c; 12.4%). The menaquinone was MK-8 (H4, ω-cyclo), and the major polar lipids were diphosphatidylglycerol and phosphatidylethanolamine. All these features were consistent with the genus Nocardia. Digital DNA–DNA hybridization values between strain KC 131T and N. ninae NBRC 108245T, N. alba DSM 44684T and N. colli CICC 11023T were 23.8%, 20.9% and 23.5%, respectively. The average nucleotide identity values between strain KC 131T and the three strains were 80.0%, 76.5% and 80.0%, respectively. In addition, some physiological and biochemical characteristics were also different. Thus, strain KC 131T represents a novel species of the genus Nocardia, for which the name Nocardia arseniciresistens sp. nov. is proposed. The type strain is KC 131T (=CGMCC 1.19493T=JCM 35916T).
Article metrics loading...
Full text loading...
References
Data & Media loading...
Supplements