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Flavobacterium erciyesense sp. nov., a putative non-pathogenic fish symbiont
Archives of Microbiology ( IF 2.8 ) Pub Date : 2021-09-13 , DOI: 10.1007/s00203-021-02566-2
Izzet Burcin Saticioglu 1
Affiliation  

During a study aiming at isolation and genomic characterization of non-pathogenic fish symbionts, strain F-328T was isolated from skin mucus of healthy-seeming rainbow trout (Oncorhynchus mykiss) and subjected to polyphasic characterization, including a comprehensive genome analysis. Strain F-328T was Gram stain negative, none-gliding, strictly aerobic, and rod shaped. The 16S rRNA gene sequence of strain F-328T exhibited the highest level of identity (98.9%) with F. turcicum F-339T. The major fatty acids were iso-C15:0, C15:1 ω6c, and summed feature 3 (C16:1 ω7c, C16:1 ω6c). The polar lipid profile consisted mainly of phosphatidylethanolamine and aminolipids, while the predominant menaquinone was MK-6. The DNA G + C content and genome size of the strain were 35.3% and 3.4 Mb, respectively. Strain F-328T shows 93.8% average nucleotide identity and 53% digital DNA–DNA hybridization identity with the closest type strain F. turcicum F-339T. In addition, strain F-328T was found to carry antimicrobial resistance genes, which confer resistance to several antimicrobials, including aminoglycoside, macrolides, and streptogramin. Differential phenotypic properties, together with the phylogenetic inference, demonstrate that strain F-328T should be classified as a novel species of the genus Flavobacterium for which the name Flavobacterium erciyesense sp. nov. is proposed, with F-328T as the type strain (= JCM 34201T = KCTC 82261T).



中文翻译:

黄杆菌 erciyesense sp。十一月,一种假定的非致病性鱼类共生体

在一项针对非致病性鱼类共生体的分离和基因组表征的研究中,菌株 F-328 T从看似健康的虹鳟鱼 ( Oncorhynchus mykiss ) 的皮肤粘液中分离出来,并进行了多相表征,包括全面的基因组分析。菌株 F-328 T为革兰氏染色阴性、非滑动、严格需氧且呈杆状。菌株 F-328 T的 16S rRNA 基因序列与F. turcicum F-339 T表现出最高水平的同一性 (98.9%) 。主要脂肪酸是 iso-C 15:0、C 15:1 ω6c 和总特征 3 (C 16:1 ω7c, C 16:1ω6c). 极性脂质谱主要由磷脂酰乙醇胺和氨基脂质组成,而主要的甲萘醌是 MK-6。该菌株的DNA G+C含量和基因组大小分别为35.3%和3.4 Mb。菌株 F-328 T与最接近的模式菌株F. turcicum F-339 T显示出 93.8% 的平均核苷酸同一性和 53% 的数字 DNA-DNA 杂交同一性。此外,菌株 F-328 T被发现携带抗菌素耐药性基因,这些基因赋予对多种抗菌素的耐药性,包括氨基糖苷类、大环内酯类和链阳菌素。差异表型特性与系统发育推断一起证明菌株 F-328 T应归类为黄杆菌属的新物种,其名称为Flavobacterium erciyesense sp。十一月 建议以 F-328 T作为类型应变(= JCM 34201 T  = KCTC 82261 T)。

更新日期:2021-09-13
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