Abstract
A novel moderately halophilic, Gram-staining negative and facultative aerobic bacterium, designated as TBZ9T, was isolated from water of Urmia Lake in Azerbaijan region of Iran. The cells were found to be rod-shaped and motile, growing in the form of creamy, convex and shiny colonies. The strain could grow in the presence of NaCl at concentrations 1–17% (w/v) (optimum, 3%), temperatures 10–40 °C (optimum, 30 °C) and pH 6.0–11.0 (optimum, pH 7.0) on marine agar. Strain TBZ9T 16S rRNA gene sequence was related to the genus Halomonas showing highest similarities to Halomonas arcis AJ282T (98.4%), Halomonas songnenensis NEAU-ST10-39T (98.0%) and Halomonas lutescens Q1UT (97.8%). In the phylogenetic trees, strain TBZ9T formed a distinct branch closely related to a subclade inside the Halomonas genus. Digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) values between strain TBZ9T and H. arcis AJ282T (20.0%, 74.0%) and H. songnenensis NEAU-ST10-39T (19.8%, 75.2%) indicated that TBZ9T represents a distinct species. Evaluation of fatty acid contents determined C10:0, C16:0, C12:0 3-OH, summed feature 3 (C16:1 ω7c and/or C16:1 ω6c) and summed feature 8 (C18:1 ω7c and/or C18:1 ω6c) as major cellular fatty acids. The major quinone of strain TBZ9T was Q-9. Polar lipid patterns consisted of phosphatidylglycerol (PG), phosphatidylethanolamine (PE), two unidentified phospholipids (PL) and four unidentified polar lipids (L). The average DNA G + C content of strain TBZ9T is 55.4 mol%. Results from phenotypic, chemotaxonomic and molecular analysis suggest that the strain TBZ9T represents a novel species within the genus Halomonas for which the name Halomonas azerica sp. nov. is proposed. The type strain is TBZ9T (= KACC 21783T = LMG 25775T).
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Funding
This work was supported by National Research Foundation (Grant No. 2017M3C1B5019250) of the Ministry of Science and ICT, Republic of Korea and Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran, (Pazhoohan ID: 66068 and Code of: IR.TBZMED.VCR.REC.1399.253).
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COJ and MSH conceived the ideas and supervised all works. VH and MAH collected the samples, isolated the strain and performed initial cultivation, storage and deposition. RW and SM analyzed the phenotypic, biochemical and genomic properties. HMK sequenced and analysed the genome. SM, SAK and COJ wrote the manuscript and the manuscript has been reviewed and edited by all authors.
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Wenting, R., Montazersaheb, S., Khan, S.A. et al. Halomonas azerica sp. nov., Isolated from Urmia Lake in Iran. Curr Microbiol 78, 3299–3306 (2021). https://doi.org/10.1007/s00284-021-02482-0
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DOI: https://doi.org/10.1007/s00284-021-02482-0