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Link to original content: http://pubmed.ncbi.nlm.nih.gov/39487886/
Polluticaenibacter yanchengensis gen. nov., sp. nov., A Novel Taxon Within the Family Chitinophagaceae Isolated from Activated Sludge - PubMed Skip to main page content
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. 2024 Nov 2;81(12):438.
doi: 10.1007/s00284-024-03967-4.

Polluticaenibacter yanchengensis gen. nov., sp. nov., A Novel Taxon Within the Family Chitinophagaceae Isolated from Activated Sludge

Zhuang Ke #  1 , Lin Wang #  1 , Ying Yang  1 , Yingchun Du  1 , Jian He  1   2 , Cansheng Yuan  3
Affiliations

Polluticaenibacter yanchengensis gen. nov., sp. nov., A Novel Taxon Within the Family Chitinophagaceae Isolated from Activated Sludge

Zhuang Ke et al. Curr Microbiol. .

Abstract

A Gram-stain-negative bacterium, designated strain LY-5 T, was isolated from an activated sludge sample collected from a river in Yancheng city, Jiangsu province, China. Cells of strain LY-5 T, were strictly aerobic, non-motile and rod-shaped. Growth occurred at 15-37 °C (optimum, 30 °C), at pH 5.0-9.0 (optimum 7.0) and at 0-3% (w/v) NaCl (optimum, 0%). Phylogenetic analysis based on 16S rRNA gene and genome sequences indicated that strain LY-5 T formed a distinct phyletic branch within the family Chitinophagaceae, with closest relatives being members of the genera Phnomibacter, Aurantisolimonas, and Chitinophaga, sharing 88.5-90.3% sequence similarity. Moreover, the average amino acid identity (AAI) between strain LY-5 T and its closed phylogenetic neighbors was below 70%, indicating it belongs to a novel genus. The predominant cellular fatty acids of LY-5 T were iso-C15:0, iso-C15:1 G and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c), and the only isoprenoid quinone was menaquinone-7 (MK-7). The major polar lipids identified in strain LY-5 T comprised phosphatidylethanolamine, two unidentified aminolipids and five unidentified lipids. The genome size of strain LY-5 T was 4.8 Mbp with a G + C content of 38.9%. Based on the evidence presented in this study, strain LY-5 T represents a novel species of a new genus in the family Chitinophagaceae, for which the name Polluticaenibacter yanchengensis gen. nov., sp. nov. (Type strain LY-5 T = CCTCC AB 2023260 T = KCTC 102218 T) is proposed.

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