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A Gram-negative, aerobic, motile and rod-shaped bacterium, designated strain T7-07T, was isolated from compost in Daejeon, Korea. Phylogenetic analysis based on 16S rRNA gene sequencing showed that strain T7-07T had 99.0 % gene sequence similarity with Arenimonas malthae KACC 14618T and 94.7–95.9 % with other recognized species of the genus Arenimonas . Cells formed creamy white to yellowish colonies on R2A agar and contained Q-8 as the predominant ubiquinone, C15 : 0 iso, C16 : 0 iso, C17 : 1 iso ω9c and C11 : 0 iso 3-OH as the major fatty acids, and diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylmethylethanolamine and an unknown aminolipid as the major polar lipids. The DNA G+C content of strain T7-07T was 68.3 mol%. DNA–DNA reassociation experiments between T7-07T and Arenimonas malthae KACC 14618T resulted in a mean relatedness value of 22.2 %. Combined genotypic and phenotypic data supported the conclusion that the strain T7-07T represents a novel species, for which the name Arenimonas daejeonensis sp. nov. is proposed. The type strain is T7-07T ( = KCTC 12667T = DSM 18060T).
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