Amnimonas aquatica gen. nov., sp. nov., Isolated from a Freshwater River
- Authors
- Lee, Yunho; Park, Hye Yoon; Jeon, Che Ok
- Issue Date
- Apr-2019
- Publisher
- Springer New York LLC
- Citation
- Current Microbiology, v.76, no.4, pp 478 - 484
- Pages
- 7
- Journal Title
- Current Microbiology
- Volume
- 76
- Number
- 4
- Start Page
- 478
- End Page
- 484
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/18470
- DOI
- 10.1007/s00284-019-01652-5
- ISSN
- 0343-8651
1432-0991
- Abstract
- A gram-stain-negative and strictly aerobic bacterium, designated strain HR-E T , was isolated from a water sample of the Han River in South Korea. Cells were catalase-negative and oxidase-positive motile rods with a flagellum. The strain grew at 10–37 °C and pH 7–8 and in the presence of 0–2% (w/v) NaCl. Ubiquinone-8 and summed features 3 (comprising C 16:1 ω7c and/or C 16:1 ω6c) and 8 (comprising C 18:1 ω7c and/or C 18:1 ω6c), C 16:0 , iso-C 10:0 and C 12:0 3-OH were identified as the major respiratory quinone and fatty acids (>5%), respectively. The 16S rRNA gene sequence of strain HR-E T shared the highest similarities with Perlucidibaca piscinae IMCC 1704 T (98.1%), Perlucidibaca aquatica BK296 T (96.8%), Paraperlucidibaca baekdonensis RL-2 T (95.8%) and Paraperlucidibaca wandonensis WT-RY4 T (95.7%). However, strain HR-E T formed a phylogenetic lineage distinct from members of the family Moraxellaceae, and a taxonomic analysis by RDP Naïve Bayesian rRNA Classifier classified strain HR-E T as a new genus of the family Moraxellaceae. In addition, analyses based on rpoD, secA and gyrB gene sequences also showed that strain HR-E T formed a lineage distinct from those of the genera Perlucidibaca and Paraperlucidibaca. Average nucleotide identity and in silico DNA–DNA hybridization values between strain HR-E T and the type strains of P. piscinae and P. aquatica were very low with 80.1 and 23.6% and 75.7 and 21.2%, respectively. The DNA G+C content was 67.0 mol%. Based on the phenotypic, genotypic and chemotaxonomic analyses, strain HR-E T represents a novel genus of the family Moraxellaceae, for which the name Amnimonas aquatica gen. nov., sp. nov. is proposed. The type strain of the type species is HR-E T (=KACC 19408 T =JCM 32266 T ). © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
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