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  • Title: Flavobacterium sedimenticola sp. nov., isolated from sediment.
    Author: Wu N, Liu L, Jiang X, Yuan Y, Mao D, Shao J, He J, Shen Q.
    Journal: Int J Syst Evol Microbiol; 2023 Dec; 73(12):. PubMed ID: 38054484.
    Abstract:
    A novel yellow-pigmented bacterial strain, designated YZ-48T, was isolated from the sediment of the Yangtze River, PR China. Cells were Gram-stain-negative, non-motile, rod-shaped, strictly aerobic, catalase-positive and oxidase-positive. The strain grew optimally on R2A medium at 37 °C, pH 7.0 and with 1.0 % (w/v) NaCl. Strain YZ-48T showed the closest 16S rRNA gene sequence similarity to Flavobacterium solisilvae SE-s27T (96.4 %) and F. dankookense DSM 25687T (96.2 %). The phylogenetic trees based on 16S rRNA gene sequences showed that strain YZ-48T belonged to the genus Flavobacterium but formed a distinct phylogenetic lineage. The obtained average nucleotide identity and digital DNA-DNA hybridization values between YZ-48T and the two closest strains were 75.0 and 74.5 % and 19.6 and 19.0 %, respectively. The sole respiratory quinone was MK-6. The major polar lipids were phosphatidylethanolamine, two unidentified aminolipids and three unidentified polar lipids. The major cellular fatty acids were iso-C16 : 0, iso-C15 : 0, iso-C15 : 1 G, iso-C17 : 0 3-OH, iso-C15 : 0 3-OH and iso-C16 : 0 3-OH. The DNA G+C content was 40.2 mol%. Based on the phenotypic, chemotaxonomic, phylogenetic and genomic data, strain YZ-48T represents a novel species of the genus Flavobacterium, for which the name Flavobacterium sedimenticola sp. nov. is proposed, with strain YZ-48T (=KCTC 82329T=CCTC AB 2023061T=MCCC 1K08804T) as the type strain.
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