Sphingobium aromaticivastans sp. nov., a novel aniline- and benzene-degrading, and antimicrobial compound producing bacterium
2019
Nguyen, Tuan Manh | Kim, Jaisoo
A strictly aerobic, orange-pigmented strain was isolated and designated as UCM-25ᵀ. This strain is capable of degrading aniline and benzene, while is also producing antimicrobial compounds which inhibit the growth of some common pathogenic microbes. A near full-length 16S rRNA gene sequence revealed similarity to Sphingobium chlorophenolicum NBRC 16172ᵀ (98.6%). The level of DNA–DNA hybridization between the new isolate and the related species suggests UCM-25ᵀ to be a new species belonging to the genus Sphingobium. The bacterial cells contained phosphatidylglycerol, phosphatidylethanolamine, sphingoglycolipid, phosphatidylcholine, phosphatidylmonomethylethanolamine, phosphatidyldimethylethanolamine, three unidentified polar lipids, and an unidentified aminophospholipid. Ubiquinone Q-10 was the major quinone and spermidine was the major polyamine. The G+C content in the DNA of strain UCM-25ᵀ was 62.9 mol%. Cells contained summed feature 8 (C₁₈:₁ω7c and/or C₁₈:₁ω6c), summed feature 3 (C₁₆:₁ω7c and/or C₁₆:₁ω6c), C₁₆:₀, and C₁₄:₀ 2-OH as major fatty acids. Based on the comparison of phenotypic, genotypic, and chemotaxonomic characteristics, strain UCM-25ᵀ represents a new member of the genus Sphingobium, for which the name S. aromaticivastans sp. nov. is proposed. The type strain is UCM-25ᵀ (=KACC 19288ᵀ =DSM 105181ᵀ).
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