School of Biology and Biological Engineering, South China University of Technology, University Park, Guangzhou 510006, Guangdong, PR China.
Int J Syst Evol Microbiol. 2020 Jan;70(1):112-119. doi: 10.1099/ijsem.0.003726.
A Gram-positive, aerobic, non-spore-forming, non-pigmented and non-motile actinobacterial strain was isolated from a soil sample collected in Guangzhou, China. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain 130 is most closely related to the type strain NBRC 105384, with a sequence similarity of 97.69 %. The isolate was distinguished from this phylogenetically related type strain by DNA-DNA hybridization (33.3 %), digital DNA-DNA hybridization (21.2 %), average nucleotide identity (75.7 %) and by a range of physiological and biochemical characteristics. Strain 130 contained MK-8(H) and MK-7 as the major menaquinones, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylinositol as the main polar lipids, and iso-C, Cω8, anteiso-C, Cω9, C and iso-C as the major cellular fatty acids. The novel strain grew at 20-36 °C, at pH 6.0-8.0 and in the presence of 0-6 % (w/v) NaCl. The genomic DNA G+C content was 72.9 mol%. The genome contained 4817 putative protein-coding sequences, and 45 tRNA and three rRNA genes. Phylogenomic analysis confirmed that strain 130 belongs to the genus and distinguished it from recognized species with available genomes. Based on these polyphasic taxonomic data, strain 130 represents a new species of the genus , for which the name sp. nov. is proposed. The type strain is 130 (=CICC 24668=JCM 33269).
一株革兰氏阳性、需氧、不产芽孢、无色素、不运动的放线菌菌株从中国广州采集的土壤样本中分离得到。基于 16S rRNA 基因序列的系统发育分析表明,菌株 130 与模式菌株 NBRC 105384 最为密切相关,序列相似性为 97.69%。该分离株与亲缘关系较近的模式菌株在 DNA-DNA 杂交(33.3%)、数字 DNA-DNA 杂交(21.2%)、平均核苷酸同一性(75.7%)和一系列生理生化特征方面存在差异。菌株 130 含有 MK-8(H)和 MK-7 作为主要的menaquinones,二磷脂酰甘油、磷脂酰乙醇胺、磷脂酰甘油和磷脂酰肌醇作为主要的极性脂,异-C、Cω8、anteiso-C、Cω9、C 和异-C 作为主要的细胞脂肪酸。新菌株在 20-36°C、pH 6.0-8.0 和 0-6%(w/v)NaCl 的条件下生长。基因组 DNA G+C 含量为 72.9 mol%。基因组包含 4817 个潜在的蛋白编码序列,45 个 tRNA 和 3 个 rRNA 基因。系统基因组分析证实,菌株 130 属于 属,并与具有可用基因组的公认 种区分开来。基于这些多相分类学数据,菌株 130 代表了属的一个新种,建议将其命名为 sp. nov.。模式菌株为 130(=CICC 24668=JCM 33269)。