Parachitinimonas caeni gen. nov., sp. nov., a novel member of family Burkholderiaceae isolated from activated sludge collected in Shenzhen, PR China

生物 16S核糖体RNA 系统发育树 拉伤 基因组DNA 基因 微生物学 遗传学 解剖
作者
Xiaoquan Wang,Caixia Han,Jing Wang,Siliang Yuan,Dian Jiao,Shanhui Wang,Yaqi Liu,Yan Li,Jingcheng Dai,Shu‐Yang Li,Dongru Qiu
出处
期刊:International Journal of Systematic and Evolutionary Microbiology [Microbiology Society]
卷期号:74 (1)
标识
DOI:10.1099/ijsem.0.006249
摘要

A Gram-stain-negative, strictly aerobic and filamentous bacterial strain, designated as DQS-5 T , was isolated from the activated sludge of a municipal sewage treatment plant in Shenzhen, PR China. Optimal growth was observed at 28 °C and pH 7.5. Catalase and oxidase activities were detected. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain DQS-5 T was most closely related to the genera Chitinimonas and Chitinivorax (91.0–93.4 % and 92.5 % 16S rRNA gene sequence similarity, respectively) and was close to the member of the family Burkholderiaceae . The complete genome sequence of strain DQS-5 T contains 5 653 844 bp and 57.3 mol% G+C. The average nucleotide identity, digital DNA–DNA hybridization and average amino acid identity values between the genome of strain DQS-5 T and those of its close relatives were 75.9–77.2, 19.0–20.3 and 57.2–61.8 %, respectively. Chemotaxonomic analysis of strain DQS-5 T indicated that the sole respiratory quinone was ubiquinone-8, the predominant cellular fatty acids were C 16 : 0 and summed feature 3 (C 16 : 1 ω7 c and/or C 16 : 1 ω6 c ), and the major polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol, aminophospholipid and aminolipid. The phylogenetic, genotypic, phenotypic and chemotaxonomic data demonstrate that strain DQS-5 T represents a novel species in a novel genus within the family Burkholderiaceae , for which the name Parachitinimonas caeni gen. nov., sp. nov., is proposed. Strain DQS-5 T (=KCTC 92788 T =CCTCC AB 2022320 T ) is the type and only strain of P. caeni .
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