An aerobic, Gram-stain-negative, agarolytic rod-shaped bacterium, designated KMM 9504T, was isolated from a sediment sample collected from the seashore of the Sea of Japan. Comparative 16S rRNA gene sequence analysis showed that strain KMM 9504T belonged to the genus Simiduia as it was most closely related to Simiduia areninigrae KCTC 23293T (97.3 % sequence similarity). Strain KMM 9504T was characterized by the major ubiquinone Q-8, and by the predominance of C16 : 1ω7c, C17 : 1ω8c, followed by C16 : 0, C15 : 0, C17 : 0 and C12 : 1 in its fatty acid profile. Polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, an unknown aminophospholipid, an unknown aminolipid, unknown phospholipids, and unknown lipids. Based on the distinctive phenotypic characteristics, phylogenetic analysis and DNA–DNA hybridization results, it is concluded that strain KMM 9504T represents a novel species of the genus Simiduia, for which the name Simiduialitorea sp. nov. is proposed. The type strain of the species is strain KMM 9504T ( = NRIC 0917T = JCM 19759T).
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