数字农科院2.0

Actinomadura Physcomitrii Sp. Nov., A Novel Actinomycete Isolated From Moss [Physcomitrium Sphaericum (Ludw) Fuernr]

文献类型： 外文期刊

作者： Zhuang, XX; Peng, CH; Wang, ZY; Zhao, JW; Shen, Y; Liu, CX; Xiang, WH

作者机构：

关键词： Endophyte; Pigmented; Rudentiformis; Genome; Thermomonosporaceae; Actinobacteria; Funariaceae; Funariales

期刊名称： ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY

ISSN： 0003-6072

年卷期： 2020 年 113 卷 5 期

页码：

收录情况： JCR（2021版）

摘要： A novel endophytic actinomycete, designated strain LD22(T), was isolated from moss [Physcomitrium sphaericum (Ludw) Fuernr] collected from Yunnan Province, Southwest China. A polyphasic taxonomic study was carried out to establish the status of this strain. Morphological and chemotaxonomic characteristics of strain LD22(T) confirmed the affiliation of the isolate to the genus Actinomadura. The diamino acid present in the cell wall is meso-diaminopimelic acid. Glucose, madurose, galactose and ribose occur in whole cell hydrolysates. The menaquinones were identified as MK-9(H-4), MK-9(H-8), MK-9(H-6) and MK-9(H-2). The polar lipid profile was found to contain diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannoside and an unidentified phospholipid. The major fatty acids were found to be C-16:0, 10-methyl C-18:0 and C-18:1 omega 9c. The DNA G + C content of the draft genome sequence, consisting of 10.0 Mbp, was 72.5%. Phylogenetic analysis of 16S rRNA gene sequences showed that strain LD22(T) belongs to the genus Actinomadura with the highest sequence similarity to Actinomadura montaniterrae CYP1-1B(T) (99.2%). However, phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate formed a phyletic line with Actinomadura rudentiformis HMC1(T) (98.6%). The low level of DNA-DNA relatedness and some different phenotypic characteristics allowed the strain to be distinguished from the above-mentioned two strains. Therefore, it is concluded that strain that strain LD22(T) represents a novel species of the genus of Actinomadura, for which the name Actinomadura physcomitrii sp. nov. is proposed. The type strain is LD22(T) (= CCTCC AA 2018050(T) = JCM 33455(T)).

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