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  • Title: Fluviibacterium aquatile gen. nov., sp. nov., isolated from estuary sediment.
    Author: Sun YY, Dang YR, He XY, Wang JM, Liu NH, Sun ML, Li CY, Chen XL, Zhang YZ, Song XY, Yang J, Zhang XY.
    Journal: Int J Syst Evol Microbiol; 2020 Jan; 70(1):105-111. PubMed ID: 31626585.
    Abstract:
    A Gram-negative, aerobic, non-flagellated and ovoid- or rod-shaped bacterium, designated strain SM1902T, was isolated from the sediment sampled at the Jia River estuary, Yantai, PR China. The strain grew at 10-37 °C (optimum, 25-30 °C), pH 6.0-10.0 (pH 7.0) and with 0.5-13.0 % (w/v) NaCl (2.5%). It reduced nitrate to nitrite, but did not produce bacteriochlorophyll a. The results of phylogenetic analysis based on 16S rRNA gene sequences revealed that strain SM1902T constituted a separated lineage within the family Rhodobacteraceae and was closely related to Meridianimarinicoccus roseus TG-679T and Phycocomes zhengii LMIT002T with 96.1 and 94.3 % 16S rRNA gene sequence similarities, respectively. The predominant cellular fatty acid was summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c). The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, an unidentified aminolipid and an unidentified lipid. The sole respiratory quinone was ubiquinone-10. The in silico DNA-DNA hybridization values between strain SM1902T and Meridianimarinicoccus roseus TG-679T and Phycocomes zhengii LMIT002T were 19.6 and 19.5 %, respectively; and the average nucleotide identity values between them were 76.1 and 74.2 %, respectively. The genomic DNA G+C content of strain SM1902T was 58.2 mol%. Based on the phylogenetic, chemotaxonomic and phenotypic data obtained in this study, strain SM1902T is considered to represent a novel species in a new genus within the family Rhodobacteraceae, for which the name Fluviibacterium aquatile gen. nov., sp. nov. is proposed. The type strain is SM1902T (=KCTC 72045T=MCCC 1K03596T=CCTCC AB 2018346T).
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