Institute of Applied Microbiology, Xinjiang Academy of Agricultural Sciences, Xinjiang Laboratory of Special Environmental Microbiology, Urumqi, Xinjiang 830091, PR China.
College of Grassland Science, Xinjiang Agricultural University, Urumqi 830052, PR China.
Int J Syst Evol Microbiol. 2023 Nov;73(11). doi: 10.1099/ijsem.0.006128.
A Gram-negative, rod-shaped, aerobic and light pink-pigmented bacterium, designated XAAS-A31, was isolated from the soil of a forest located near Hotan City, Xinjiang, PR China. Polyphasic, taxonomic and phylogenomic analyses were used to determine the taxonomy position of the strain. Phylogenetic analysis based on 16S rRNA gene sequence analysis indicated that XAAS-A31 belongs to the genus , family , and shows highest sequence similarity to XAAS-R86 (96.2 %). The digital DNA-DNA hybridization (22.0 %-19.2 %) and orthologous average nucleotide identity (74.1 %-72.7 %) values relative to closest validly published species were lower than the recommended thresholds of 70 and 96 %, respectively. The cells grew at 4-40 °C (optimum, 28-30 °C), at pH 6.5-8.5 (pH 7.0-7.5) and with 0-8% NaCl (0.5-2.0% NaCl). The main respiratory quinone of XAAS-A31 is MK-7, and the principal cellular fatty acids are iso-C, iso-C 3OH and summed feature 4 (iso-C I and/or anteiso-C B). The major polar lipids are phosphatidylethanolamine, three unidentified amino-phospholipids, one unidentified glycolipid and eight unidentified lipids. The genome length of strain XAAS-A31 is 5.48 Mbp with a DNA G+C content of 44.2 mol% and 4013 protein-coding genes. Phenotypic and genotypic data suggested that XAAS-A31 represents a novel species, for which we propose the name sp. nov. and type strain XAAS-A31 (=CCTCC AB 2017162=KCTC 62049).
一株革兰氏阴性、杆状、需氧、浅粉红色着色的细菌,被命名为 XAAS-A31,从中国新疆和田市附近森林的土壤中分离得到。采用多相分类学、系统发育和基因组分析方法来确定该菌株的分类地位。基于 16S rRNA 基因序列分析的系统发育分析表明,XAAS-A31 属于 科, 属,与 XAAS-R86 (96.2%)的序列相似度最高。数字 DNA-DNA 杂交(22.0%-19.2%)和直系同源平均核苷酸同一性(74.1%-72.7%)值与最接近的有效发表的种相对低于 70%和 96%的推荐阈值。细胞在 4-40°C(最佳温度为 28-30°C)、pH 6.5-8.5(最佳 pH 为 7.0-7.5)和 0-8%NaCl(0.5-2.0%NaCl)中生长。XAAS-A31 的主要呼吸醌是 MK-7,主要的细胞脂肪酸是 iso-C、iso-C 3OH 和特征 4(iso-C I 和/或 anteiso-C B)。主要的极性脂是磷脂酰乙醇胺、三种未鉴定的氨基磷脂、一种未鉴定的糖脂和八种未鉴定的脂类。菌株 XAAS-A31 的基因组长度为 5.48 Mbp,G+C 含量为 44.2mol%,含有 4013 个蛋白编码基因。表型和基因型数据表明,XAAS-A31 代表一个新的 种,我们建议将其命名为 sp. nov.,并将其命名为 XAAS-A31(=CCTCC AB 2017162=KCTC 62049)作为其模式株。