Nocardioides imazamoxiresistens sp. nov. Isolated from the Activated Sludge

文献类型： 外文期刊

第一作者： Wang, Xiao

作者： Wang, Xiao;Jiang, Xueting;Mao, Dongmei;Qiu, Jiguo;He, Jian;Yang, Yuwen;Chen, Le;Zhang, Baolong;Hu, Gang;He, Jian

作者机构：

期刊名称：CURRENT MICROBIOLOGY （ 影响因子：2.6； 五年影响因子：2.6 ）

ISSN： 0343-8651

年卷期： 2024 年 81 卷 7 期

页码：

收录情况： SCI

摘要： A Gram-staining-positive actinomycete named YZH12(T) was isolated from the sediment of the Yangtze River in Nanjing, Jiangsu province, China. Cells were aerobic, non-spore forming, non-motile, short rod (0.4-0.6 x 0.5-1.0 mu m) or coccus (0.4-0.6 mu m in diameter). Colonies were circular, smooth, and beige to yellowish. Growth occurred at 15-42 degrees C (optimal 28 degrees C), pH 5.0-9.0 (optimal 7.0), and 0-10% (w/v) NaCl (optimal 2%). The strain could tolerate 1500 mg/L of imazamox. Strain YZH12(T) showed 98.7% 16S rRNA gene sequence similarity Nocardioides zeae JM-1068(T) and less than 97% similarities with other type strains in the genus Nocardioides. Phylogenetic analysis based on genome and 16S rRNA gene sequences indicated that strain YZH12(T) was phylogenetically affiliated to the genus Nocardioides and formed a subclade with N. zeae JM-1068(T) and N. alkalitolerans DSM 16699(T). The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between YZH12(T) and closely related type strain N. zeae JM-1068(T) were 79.9% and 35.2%, respectively. The major fatty acids (> 5%) were C18: 1 omega 9c, iso-C16: 0, C16: 0, C17: 1 omega 8cand C18: 0; the major respiratory quinone was MK-8(H4); and the polar lipids profiles were diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), glycolipid (GL), two aminophospholipids (APL1, APL2), and an unknown polar lipid (L). The genomic DNA G + C content is 73.5%. Based on the phenotypic, chemotaxonomic, phylogenetic analyses, and genomic data, strain YZH12(T) represents a novel species of the genus Nocardioides, for which the name Nocardioides imazamoxiresistens YZH12(T) is proposed, with strain YZH12(T) (= KCTC 49964(T) = MCCC 1K0892(T)) as the type strain.

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