Niastella caeni sp. nov., isolated from activated sludge

文献类型： 外文期刊

第一作者： Sheng, Mengyao

作者： Sheng, Mengyao;Yang, Zhou;Xu, Jianyi;Qiu, Jiguo;He, Jian;Yang, Xiaojun;Qiu, Shanlian

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关键词： Niastella caeni sp. nov.; sludge; polyphasic taxonomy; 16S rRNA gene sequence

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： 2020 年 70 卷 4 期

页码：

收录情况： SCI

摘要： A Gram-stain-negative, aerobic, non-flagellated and filamentous-shaped bacterium, HX-16-21(T), was isolated from activated sludge. Strain HX-16-21(T) was able to degrade gentisate. protocatechuic acid and p-hydroxybenzoic acid and herbicides quizalofop-p-ethyl and diclofop-methyl. The strain shared 97.2 % 16S rRNA gene sequence similarity to Niastella vici CCTCC AB 2015052(T) and less than 97 % similarities to other type strains. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain HX-16-21(T) belonged to the genus Niastella and formed a subclade with N. vici CCTCC AB 2015052(T). The major polar lipids were phosphatidylethanolamine, phosphatidylcholine and six unidentified lipids. The major fatty acids were isoC(15:0') isoC(15:1) G and iso-C-17:0 3-OH. The predominant respiratory quinone was menaquinone 7 (MK-7). The draft genome of strain HX-16-21(T) was 8.1 Mb, and the G+C content was 43.5 mol%. The average nucleotide identity and digital DNA-DNA hybridization values between strain HX-16-21(T) and N. vici CCTCC AB 2015052(T) were 80.6 and 26.8 %, respectively. Based on both phenotypic and phylogenetic evidence, strain HX-16-21(T) is considered to represent a novel species in the genus Niastella, for which the name Niastella caeni sp. nov. is proposed. The type strain is HX-16-21(T) (=KCTC 72288(T) =ACCC 61580(T)).

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