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Description of Salinimonas profundi sp. nov., a deep-sea bacterium harboring a transposon Tn6333
Antonie van Leeuwenhoek ( IF 2.6 ) Pub Date : 2021-01-03 , DOI: 10.1007/s10482-020-01501-7
Dao-Feng Zhang 1 , Xi-Wen Cui 1 , Wen-Jun Li 2, 3 , Xiao-Mei Zhang 4 , Hua-Peng Xue 1 , Jian-Ke Huang 1 , Ai-Hua Zhang 1
Affiliation  

A Gram-staining-negative bacterium, strain HHU 13199T, was isolated from a marine sediment sample collected from South China Sea (119°19.896’E, 19°41.569’N) at a depth of 2918 m. The 16S rRNA gene sequence analysis indicated that strain HHU 13199T represents a member of the genus Salinimonas with the highest sequence similarity (99.8%) to the type strain S. iocasae KX18D6T. However, the average nucleotide identity values and digital DNA–DNA hybridization between strain HHU 13199T and closely related members of the genus Salinimonas were all below the cut-off level (95–96 % and 70%, respectively) for species delineation. This strain grew with sea salt of 0.5–18% (w/v) (optimum, 2–5%), but no growth observed when using NaCl instead. The major fatty acids are C16:0, summed feature 3 (C16:1ω7c and/or C16:1ω6c), and summed feature 8 (C18:1ω7c and/or C18:1ω6c). The predominant isoprenoid quinone is ubiquinone-8. The polar lipids mainly consist of phosphatidylethanolamine, and phosphatidylglycerol. Genomic characterization revealed that strain HHU 13199T harbors a distinct type I-F CRISPR-Cas system and plenty of genes associated with heavy metal resistance, including a transposon (Tn6333) conferring mercury resistance. In addition, a phylogenetic tree based on the bac120 core genes suggested that the genus Salinimonas should be a subclade within Alteromonas. On the basis of the phenotypic, phylogenetic and chemotaxonomic characterizations, strain HHU 13199T represents a novel species of the genus Salinimonas, for which the name Salinimonas profundi sp. nov. is proposed. The type strain is HHU 13199T (= KCTC 72837T = MCCC 1K04127T).



中文翻译:

Salinimonas profundi sp. 的描述。11 月,一种携带转座子 Tn6333 的深海细菌

从南海(119°19.896'E,19°41.569'N)在2918 m深度收集的海洋沉积物样品中分离出一种革兰氏染色阴性细菌,菌株HHU 13199 T。16S rRNA基因序列分析表明菌株HHU 13199 Ť表示属的成员Salinimonas具有最高的序列相似性(99.8%)向型菌株S. iocasae KX18D6 Ť。然而,菌株 HHU 13199 TSalinimonas属的密切相关成员之间的平均核苷酸同一性值和数字 DNA-DNA 杂交均低于物种划分的临界水平(分别为 95-96% 和 70%)。该菌株使用 0.5-18% (w/v)(最佳,2-5%)海盐生长,但在使用 NaCl 时未观察到生长。主要的脂肪酸是 C 16:0、总特征 3(C 16:1 ω 7 c和/或 C 16:1 ω 6 c)和总特征 8(C 18:1 ω 7 c和/或 C 18 :1 ω 6 c )。主要的类异戊二烯醌是 ubiquinone-8。极性脂质主要由磷脂酰乙醇胺和磷脂酰甘油组成。基因组表征显示菌株 HHU 13199 T拥有独特类型的 IF CRISPR-Cas 系统和大量与重金属抗性相关的基因,包括赋予汞抗性的转座子 (Tn6333)。此外,基于 bac120 核心基因的系统发育树表明单胞菌属应该是交替单胞菌属的一个分支。上的表型,系统发育和化学分类表征的基础上,应变HHU 13199 Ť表示属的一个新种Salinimonas,为此,名称Salinimonas profundi藻。十一月 被提议。类型菌株是 HHU 13199 T (= KCTC 72837 T = MCCC 1K04127 T )。

更新日期:2021-01-03
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