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Chryseobacterium aurantiacumpeelii sp nov., isolated from a freshwater pond used for Murray cod (Maccullochella peelii peelii) culture

文献类型： 外文期刊

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

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

2.Fujian Key Lab Special Aquat Formula Feed, Fuzhou 350308, Fujian, Peoples R China

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

4.Fujian Acad Agr Sci, Fuzhou 350013, Fujian, Peoples R China

关键词： Chryseobacterium aurantiacum sp nov.; taxonomy; Murray cod (Maccullochella peelii peelii)

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）

ISSN： 1466-5026

年卷期： 2018 年 68 卷 11 期

页码：

收录情况： SCI

摘要： A yellow-pigmented, Gram-staining-negative, aerobic, non-motile and rod-shaped bacterium, designated strain F30(T), was isolated from fresh water of a diseased farmed Murray cod with a profound ulceration pond in Zhejiang province, PR China. Growth was observed at NaCl concentrations of 0.5-3.5% (w/v) (optimum, 1.5-2.0 %), temperatures of 10-35 degrees C (optimum, 28 degrees C) and pH 5.0-9.0 (optimum, 6.5). Phylogenetic analysis based on 16S rRNA gene sequences indicated that F30(T) represented a member of the genus Chryseobacterium, showing the highest similarity to Chryseobacterium jejuense DSM19299(T) (99.0 %) and Chryseobacterium nakagawai NCTC 13529(T) (99.0 %), and less than 98.7% similarity to other species of the genus Chryseobacterium with validly published names. The average nucleotide identity and in silico DNA-DNA hybridization values between F30(T) and the reference strains were 78.4-90.5% and 2.6-42.5 %, respectively. The results of chemotaxonomic analysis indicated that the fatty acids, as well as the polar lipid profiles of F30(T) were similar to those of species of the genus Chryseobacterium, and the sole respiratory quinone was MK-6. On the basis of its phylogenetic, chemotaxonomic and phenotypic data, strain F30(T) represents a novel species, for which the name Chryseobacterium aurantiacum sp. nov. is proposed. The type strain is F30(T) (=KCTC 62135(T) = MCCC 1K03457(T)).

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