The Institute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo, 060-0819, Japan.
Arch Microbiol. 2022 Aug 17;204(9):559. doi: 10.1007/s00203-022-03167-3.
A novel chemolithoautotrophic bacterium, strain H1576, was isolated from water of a brackish lake. Strain H1576 grew aerobically on inorganic sulfur compounds. Hydrogen gas did not support autotrophic growth, and heterotrophic growth was not observed. Cells were rod shaped, motile, 1.5-2.7 μm in length and 0.6-0.7 μm in width. Growth was observed at 3-22 °C with an optimum growth temperature of 13-15 °C. The pH range for growth was 6.0-7.4 with an optimum pH of 6.6-6.8. Major fatty acids were summed feature 3 (Cω7c and/or Cω6c). The complete genome of strain H1576 consists of a circular chromosome and a plasmid, with total length of 2.8 Mbp and G+C content of 46.4 mol%. Phylogenetic analyses indicated that strain H1576 belongs to the genus Sulfurimonas but distinct from representatives of existing species. On the basis of genomic and phenotypic characteristics, a new species named Sulfurimonas aquatica sp. nov. is proposed with the type strain of strain H1576 (= BCRC 81254 = JCM 35004).
从一个咸水湖中分离到一株新型化能自养细菌，命名为 H1576 菌株。该菌株可在有氧条件下利用无机硫化合物进行生长，氢气不能支持其自养生长，也不能进行异养生长。细胞呈杆状，可运动，长 1.5-2.7μm，宽 0.6-0.7μm。在 3-22°C 下生长，最适生长温度为 13-15°C。生长的 pH 值范围为 6.0-7.4，最适 pH 值为 6.6-6.8。主要脂肪酸为 summed feature 3 (Cω7c 和/或 Cω6c)。H1576 菌株的全基因组由一个环状染色体和一个质粒组成，总长度为 2.8 Mbp，GC 含量为 46.4 mol%。系统发育分析表明，H1576 菌株属于 Sulfurimonas 属，但与现有种的代表菌株不同。基于基因组和表型特征，建议将该菌株命名为Aquatic Sulfurimonas aquatica sp. nov.，其模式菌株为 H1576 菌株 (= BCRC 81254 = JCM 35004)。
