Aliifodinibius saliphilus sp. nov., a moderately halophilic bacterium isolated from sediment of a crystallizing pond of a saltern.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY(2020)
Abstract
Two Gram-stain-negative, moderately halophilic bacteria, designated strains ECH52T and KHM46, were isolated from the sediment of a grey saltern located in Sinui island at Shinan, Korea. The isolates were aerobic, non-motile, short rods and grew at 15-45 °C (optimum, 37 °C), at pH 6.0-10.0 (optimum, pH 8.0) and with 3-25 % (w/v) NaCl (optimum, 10 % NaCl). Phylogenetic analyses based on 16S rRNA gene sequences indicated that strains ECH52T and KHM46 belonged to the genus Aliifodinibius in the family Balneolaceae with sequence similarities of 94.3-98.6 % and showed the highest sequence similarity to Aliifodinibius halophilus 2W32T (98.6 %), A. sediminis YIM J21T (94.7%), A. salicampi KHM44T (94.6 %) and A. roseus YIM D15T (94.3 %). The DNA G+C content of the genomic DNA of strain ECH52T was 40.8 mol%. The predominant isoprenoid quinone was menaquinone-7 (MK-7) and the major cellular fatty acids were iso-C17 : 1ω9c, iso-C15 : 0, and C16 : 1ω7c and/or iso-C15 : 0 2-OH. The major polar lipids were identified as diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, two unidentified glycolipids and four unidentified lipids. Based on the phylogenetic, phenotypic and chemotaxonomic data, strains ECH52T and KHM46 are considered to represent a novel species of the genus Aliifodinibius , for which the name Aliifodinibius saliphilus sp. nov. is proposed. The type strain is ECH52T (=KACC 19126T=NBRC 112664T).
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Key words
Aliifodinibius saliphilus sp. nov, saltern, moderate halophile, taxonomy
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