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Metabacillus elymi sp. nov., isolated from the Rhizosphere of Elymus tsukushiensis, a plant native to the Dokdo Islands, Republic of Korea
Antonie van Leeuwenhoek ( IF 2.6 ) Pub Date : 2021-08-06 , DOI: 10.1007/s10482-021-01634-3
Soo-Yeong Lee 1, 2 , Jin-Soo Son 1, 2 , Ye-Ji Hwang 2 , Jae-Ho Shin 3 , Sa-Youl Ghim 1, 2
Affiliation  

Dokdo islands in Republic of Korea, is not suited to survive plant because strong wind, low organic content and high salinity. Nevertheless, 64 taxa of plants have a symbiotic relationship with microbe. The Metabacillus elymi KUDC1714T was isolated from the rhizosphere of Elymus tsukushiensis collected from Dokdo Islands. This bacterial strain was Gram-stain positive, non-motile, non-spore forming, aerobic and rod-shape bacteria with 0.4–0.5 × 2.5–3.0 μm in size. Colonies were smooth, yellowish-white circular and 2.0–3.0 mm in diameter. KUDC1714T was capable of growing at 10–45 °C (optimum, 30 °C), pH 7–11 (optimum, pH 8) and 0–8.0% (w/v) NaCl (optimum, 1.0–2.0%). Flagella were not observed by transmission electron microscopy. Phylogenetic analyses, based on 16S rRNA gene sequences, showed that KUDC1714T belonged to the genus Metabacillus formed a phyletic lineage within the genus Metabacillus of the family Bacillaceae. The strain KUDC1714T was most closely related to Metabacillus sediminilitoris DSL-17 T (98.2%), Metabacillus litoralis SW-211 T (98.2%) and Metabacillus halosaccharovorans E33T (97.7%) based on 16S rRNA gene sequence. In silico DNA-DNA hybridization using genome-to-genome distance calculator were analysed at 25.8% and 23.5% in strain KUDC1714T and Metabacillus sediminilitoris DSL-17 T, and strain KUDC1714T and Metabacillus litoralis SW-211 T, respectively. Strain KUDC1714T and its closet type strain were all below cut-off point of the average nucleotide identity and average amino acid identity values. The genome contains 5197 CDSs, 3 rRNAs, 118 tRNAs, 5 ncRNAs. The genomic DNA G + C content was 34.8 mol%. Its polar lipids were diphosphatidylglycerol, phosphatidylglycerol and its major fatty acids were anteiso-C15:0 and iso-C15:0. The strain KUDC1714T contained menaquinone-7 as major isoprenoid quinone. Based on its genetic data, physiological and biochemical characteristics, strain KUDC1714T should be considered a novel species of the genus Metabacillus, for which we propose the name Metabacillus elymi sp. nov. the type strain is KUDC1714T (= KCTC 33222 T, = DSM 27608 T).



中文翻译:

Metabacillus elymi sp. 11 月,从 Elymus tsukushiensis 的根际分离出来,Elymus tsukushiensis 是一种原产于大韩民国的植物

大韩民国的独岛由于风力强、有机物含量低和盐度高,不适合植物生存。尽管如此,植物的 64 个分类群与微生物存在共生关系。所述Metabacillus elymi KUDC1714 Ť从根际分离叶老tsukushiensis从独岛群岛收集。该菌株为革兰氏染色阳性、非运动性、非孢子形成、需氧和杆状细菌,大小为 0.4-0.5 × 2.5-3.0 μm。菌落光滑,黄白色圆形,直径 2.0-3.0 毫米。KUDC1714 T能够在 10–45 °C(最佳,30 °C)、pH 7–11(最佳,pH 8)和 0–8.0% (w/v) NaCl(最佳,1.0–2.0%)下生长。透射电子显微镜未观察到鞭毛。系统发育分析,基于16S rRNA基因序列,表明KUDC1714 Ť属于属Metabacillus形成属内的种类繁多谱系Metabacillus家庭的芽孢杆菌。菌株 KUDC1714 TMetabacillus sediminilitoris DSL-17  T (98.2%)、Metabacillus litoralis SW-211  T (98.2%) 和Metabacillus halosaccharovorans E33 T最密切相关(97.7%) 基于 16S rRNA 基因序列。使用基因组到基因组距离计算器在 KUDC1714 TMetabacillus sediminilitoris DSL-17  T菌株以及 KUDC1714 TMetabacillus litoralis SW-211  T菌株中分别分析了 25.8% 和 23.5% 的计算机 DNA-DNA 杂交。菌株KUDC1714 T及其壁橱型菌株均低于平均核苷酸同一性和平均氨基酸同一性值的临界点。该基因组包含 5197 个 CDS、3 个 rRNA、118 个 tRNA、5 个 ncRNA。基因组 DNA G + C 含量为 34.8 mol%。其极性脂质为二磷脂酰甘油、磷脂酰甘油,主要脂肪酸为反异C 15:0和 iso-C 15:0。菌株 KUDC1714 T含有作为主要异戊二烯醌的甲基萘醌 7。根据其遗传数据、生理和生化特征,菌株KUDC1714 T应被认为是Metabacillus属的一个新物种,我们建议将其命名为Metabacillus elymi sp。十一月 类型菌株是 KUDC1714 T (= KCTC 33222  T , = DSM 27608  T )。

更新日期:2021-08-09
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