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Pseudomonas ovata sp. nov., Isolated from the Skin of the Tail of Farmed Murray cod (Maccullochella peelii peelii) with a Profound Ulceration

文献类型： 外文期刊

作者： Rao, Qiuhua 1 ; Liu, Yang 1 ; Chen, Can 3 ; Lin, Qiu 1 ; Ren, Lihua 1 ; Huang, Minmin 1 ; Tu, Jiefeng 1 ; Luo, Tuyan 1 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Fuzhou 350003, Fujian, Peoples R China

2.Ningbo Univ, Coll Food & Pharmaceut Sci, Ningbo 315800, Zhejiang, Peoples R China

3.Zhejiang Univ, Ocean Coll, Zhoushan 316000, Peoples R China

期刊名称：CURRENT MICROBIOLOGY （ 影响因子：2.188； 五年影响因子：2.197 ）

ISSN： 0343-8651

年卷期： 2019 年 76 卷 10 期

页码：

收录情况： SCI

摘要： A Gram-negative, strictly aerobic, motile, rod-shaped bacterium with monopolar flagellum, designated as F51(T), was isolated from the skin ulcer of farmed Murray cod sampled from Zhejiang Province, China. Strain F51(T) grew at 4-37 degrees C (optimal temperature, 28 degrees C), pH 5.0-8.5 (optimal pH, 7.5) and NaCl concentration of 0-6.0% (w/v) (optimal concentration, 2.0%). Phylogenetic analysis based on average nucleotide identity (76.2-78.4%) and in silico DNA-DNA hybridization (22.3-23.2%) values revealed that strain F51(T) forms a distinct lineage in the clade of genus Pseudomonas with less than 98.9% 16S rRNA gene sequence similarity to type strains of the genus and represents a novel species related most closely to Pseudomonas floridensis LMG 30013(T). Three housekeeping genes (rpoB, rpoD and gyrB) of strain F51(T) were analysed to further confirm that the isolate is distinctly delineated from related Pseudomonas species. Chemotaxonomic analysis indicated that the sole respiratory quinone of strain F51(T) is Q-9; its predominant cellular fatty acids are C-16:0, summed feature 3 (iso-C-15:0 2-OH and/or C-16:1 omega 7c), summed feature 8 (C-18:1 omega 7c and/or C-18:1 omega 6c) and C-10:0 3-OH; and its major polar lipids consist of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, two unidentified glycolipids, three unidentified phospholipids and an unidentified aminophosphoglycolipid. This composition is typical of the chemotaxonomic attributes of Pseudomonas. Based on its phenotypic, chemotaxonomic and phylogenetic features, strain F51(T) is considered to represent a novel species for which the name Pseudomonas ovata sp. nov. is proposed. The type strain is F51(T) (= KCTC 62133(T) = MCCC 1K03458(T)).

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