Proteiniclasticum sediminis sp. nov., an obligate anaerobic bacterium isolated from anaerobic sludge
文献类型： 外文期刊
作者： Liu, Junwei 1 ; Bao, Yixuan 1 ; Zhang, Xuan 1 ; Zhang, Kaiyun 1 ; Chen, Shuaimin 2 ; Wu, Haiyan 2 ; He, Jian 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Key Lab Agr Environm Microbiol, Minist Agr, Nanjing 210095, Jiangsu, Peoples R China
2.Jilin Acad Agr Sci, Inst Agr Environm & Resources Res, Changchun 130033, Jilin, Peoples R China
关键词： Acetochlor; Anaerobic bacterium; Novel species; Proteiniclasticum sediminis sp; nov; Polyphasic taxonomy
期刊名称：ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY （ 影响因子：2.271； 五年影响因子：2.707 ）
ISSN： 0003-6072
年卷期： 2021 年 114 卷 10 期
页码：
收录情况： SCI
摘要： An obligate anaerobic bacterial BAD-10( T) was isolated from anaerobic acetochlor-degrading sludge. The strain was Gram-stain negative, curved rod-shaped, non-motile and non-spore-forming. Growth was observed in PYT medium at pH 6.0-9.0 (optimum, pH 7.5), at 25-47 degrees C (37 degrees C) and with 0-1.0% NaCl (w/v, 0%). Strain BAD-10( T) could degrade acetochlor. The major fermentation products from peptone-yeast (PY) medium were acetate and butyrate. The predominant cellular fatty acids were iso-C-15:0 FAME, anteiso-C-15:0 FAME and C-16:0 FAME. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the strain BAD-10( T) showed closest affiliation to Proteiniclasticum ruminis D3RC-2( T), with a sequence similarity of 97.6%. Genome sequencing revealed a genome size of 2,983,986 bp, a G + C content of 51.4 mol% and protein-coding genes of 3,102. The average nucleotide identity and in silico DNA-DNA hybridization values between strain BAD-10( T) and Proteiniclasticum ruminis D3RC-2( T) were 71.0% and 20.4%, respectively, which were below the standard thresholds for species differentiation. On the basis of phenotypic, physiological and phylogenetic evidence, strain BAD-10( T) represents a novel species in the genus Proteiniclasticum, for which the name Proteiniclasticum sediminis sp. nov. is proposed. Strain BAD-10( T) (= CCTCC AB 2021091( T) = KCTC 25288( T)) is the type strain of the proposed novel species.
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