Streptomyces oryziradicis sp. nov., a novel actinomycete isolated from rhizosphere soil of rice (Oryza sativa L.)

文献类型： 外文期刊

第一作者： Li, Chenxu

作者： Li, Chenxu;Cao, Peng;Jiang, Mengqi;Sun, Tianyu;Shen, Yue;Xiang, Wensheng;Zhao, Junwei;Wang, Xiangjing;Xiang, Wensheng

作者机构：

关键词： Streptomyces; 20a ''> polyphasic taxonomy; 16S rRNA gene; MLSA

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.689； 五年影响因子：2.925 ）

ISSN： 1466-5026

年卷期： 2020 年 70 卷 1 期

页码：

收录情况： SCI

摘要： A novel actinobacterium, designated strain NEAU-C40(T), was isolated from the rhizosphere soil of rice (Oryza sativa L.) collected from Northeast Agricultural University in Harbin, Heilongjiang province, north-east PR China, and was characterized using a polyphasic approach. On the basis of results of 16S rRNA gene sequence analysis, strain NEAU-C40(T) belongs to the genus Streptomyces, and shares highest sequence similarities with Streptomyces polygonati CGMCC 4.7237(T) (97.9%) and Streptomyces abietis DSM 42080(T) (97.9%). Morphological and chemotaxonomic characteristics of the strain also supported its assignment to the genus Streptomyces. Cell walls contained LL-diaminopimelic acid and the whole-cell hydrolysates were glucose, rhamnose and ribose. The major menaquinones were identified as MK-9(H-8) and MK-9(H-6). The major fatty acids were iso-C-16:0, anteiso-C-15:0, C-16:0 and anteiso-C-17:0. The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol mannoside and an unidentified lipid. The genomic DNA G+C content of strain NEAU-C40(T) was 71.8 mol%. Moreover, multilocus sequence analysis based on five other housekeeping genes (atpD, gyrB, rpoB, recA and trpB) and the low level of DNA-DNA relatedness allowed the isolate to be differentiated from its most closely related strains. On the basis of phenotypic, genotypic and phylogenetic data, strain NEAU-C40(T) can be characterized to represent a novel species of the genus Streptomyces, for which the name Streptomyces oryziradicis sp. nov. is proposed. The type strain is NEAU-C40(T) (=DSM 107943(T)=CCTCC AA 2018038(T)).

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