Abstract
A Gram-negative, aerobic, short rod-shaped bacterium, designated ASW11-19T, was isolated from a coastal seawater sample of the Yellow Sea, PR China. Strain ASW11-19T grew optimally at 37 °C, 3.0–5.0% (w/v) NaCl and pH 7.5. Phylogenetic analysis based on the 16S rRNA gene sequences revealed that strain ASW11-19T belonged to the genus Alteromonas and most closely related to Alteromonas profundi 345S023T and Alteromonas fortis 1T (98.4%, both). The draft genome was 3.55 Mb with 3150 protein-coding genes, 18 contigs, and a DNA G+C content was 44.4%. The digital DNA–DNA hybridization and average nucleotide identity values were below the species-delineating thresholds. The major fatty acids were summed feature 3 (C16:1ω7c/C16:1ω6c), summed feature 8 (C18:1ω7c/C18:1ω6c), and C16:0. The sole respiratory quinone was ubiquinone 8. The polar lipids were phosphatidylethanolamine, phosphatidylglycerol, phospholipid, and two unidentified lipids. Based on these genomic data, phenotypic and chemotaxonomic properties, strain ASW11-19T is considered to represent a novel species of the genus Alteromonas. The name Alteromonas salexigens sp.nov. is proposed for ASW11-19T (=MCCC 1K07239T=KCTC 92247T).
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Data availability
The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene and draft genome sequence of the type strain ASW11-19T is OP548644 and JAOTJC000000000, respectively.
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Funding
This work was supported by the National Natural Science Foundation of China (32002143, 31972590), Science and Technology Innovation Fund Project of Shanxi Agricultural University (2020BQ07), and Excellent Talents Come to Shanxi to Reward Scientific Research Projects (SXYBKY2019024, SXYBKY2019025).
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LPS conducted the experiments and wrote the paper; XYH analyzed the data; HJN and QW participated in experiments; CXP performed the mapping of the phylogenetic tree; YL and CQX designed the study and revised the paper. All authors reviewed and approved the final version of the paper.
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Communicated by Yusuf Akhter.
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The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequence and the draft genome sequence of strain ASW11-19T are OP548644 and JAOTJC000000000, respectively.
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Sun, L., Hu, X., Wang, Q. et al. Alteromonas salexigens sp. nov., isolated from coastal seawater. Arch Microbiol 205, 317 (2023). https://doi.org/10.1007/s00203-023-03658-x
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DOI: https://doi.org/10.1007/s00203-023-03658-x