Abstract
A novel Gram-stain negative, aerobic and ovoid to short rod shaped bacterium with a single polar flagellum, named strain B57T, was isolated from sediment of Clam Island, Liaoning Province, China. The optimal growth of this strain was found to occur at 37 °C, pH 6–6.5, and in the presence of 2% (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain B57T forms a distinct lineage within the family Rhodobacteraceae, sharing high 16S rRNA gene sequence similarity with Sinirhodobacter populi sk2b1T (97.4%). The average amino acid identity of B57T and the closely related species were lower than the threshold level for genus delineation. The dominant respiratory quinone of strain B57T was identified as Q-10. The major fatty acids were found to be Summed Feature 8 (C18:1ω7c and/or C18:1ω6c), Summed Feature 3 (C16:1ω7c and/or C16:1ω6c) and C16: 0. The polar lipids were identified as phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylmonomethylethanolamine, diphosphatidylglycerol, two unidentified phospholipids, one unidentified glycolipid, and one unidentified lipid. The DNA G + C content of strain B57T was determined to be 64.1 mol%. Based on the biochemical, phylogenetic and chemotaxonomic analysis, strain B57T is concluded to represent a novel species of a novel genus, for which the name Sedimentimonas flavescens gen. nov., sp. nov.is proposed. The type strain is B57T (= CGMCC1.19488T = KCTC 92053T).
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Data availability
The GenBank accession numbers of the 16S rRNA gene and the draft genome sequences of strain B57T are MZ433255 and JAHVAI000000000, respectively. All other data generated or analysed during this study are included in this published article and its supplementary information files.
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Acknowledgements
This work was supported by the Special Foundation for National Science and Technology Basic Research Program of China (NO. 2019FY100706), the Science Fund for Distinguished Young Scholars of Anhui Province (No. 2008085J12), and the Science and Technology Major Project of Anhui Province (No. 202103a06020006).
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Funding was provided by Special Foundation for National Science and Technology Basic Research Program of China (NO. 2019FY100706), the Science Fund for Distinguished Young Scholars of Anhui Province (No. 2008085J12), and the Science and Technology Major Project of Anhui Province (No. 202103a06020006).
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Conceived and designed the experiments: FZ. Performed the experiments: ML, ZX, ZY. Analysed the data: ML, FZ, and XY. Wrote the paper: ML and FZ.
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Mu, L., Zhang, X., Zhang, Y. et al. Sedimentimonas flavescens gen. nov., sp. nov., isolated from sediment of Clam Island, Liaoning Province. Antonie van Leeuwenhoek 115, 979–994 (2022). https://doi.org/10.1007/s10482-022-01754-4
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DOI: https://doi.org/10.1007/s10482-022-01754-4