Abstract
An orange-coloured, rod-shaped, non-motile, Gram-reaction-negative, strictly aerobic bacterial strain, designated JC2680(T), was isolated from a seawater sample of Jeju Island, Korea. The isolate required sea salts for growth. Flexirubin-type pigments were absent. 16S rRNA gene sequence analysis indicated that the test strain belonged to the genus Aquimarina within the family Flavobacteriaceae, but shared relatively low levels of similarity (93.6-95.9 %) with the type strains of recognized Aquimarina species. The predominant cellular fatty acids [iso-C(17 : 0) 3-OH, iso-C(15 : 0) and summed feature 9 (comprising 10-methyl C(16 : 0) and/or iso-C(17 : 1)ω9c) and DNA G+C content (35 mol%) were consistent with the assignment of strain JC2680(T) to the genus Aquimarina. However, a number of phenotypic characteristics, namely inability to grow under microaerophilic conditions, differences in enzyme reactions, and absence of flexirubin-type pigments and gliding motility, clearly distinguished strain JC2680(T) from recognized species of the genus Aquimarina. The data presented thus indicate that strain JC2680(T) represents a novel species of the genus Aquimarina, for which the name Aquimarina addita sp. nov. is proposed. The type strain is JC2680(T) ( = KACC 14156(T) = JCM 17106(T)).
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