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Aequorivita capsosiphonis sp. nov., isolated from the green alga Capsosiphon fulvescens, and emended description of the genus Aequorivita

¹ Department of Biological Sciences, College of Life Sciences and Natural Resources, Sunchon National University, Suncheon 540-742, Republic of Korea
² Division of Food Science and Aqualife Medicine, Chonnam National University, Yeosu 550-749, Republic of Korea
³ Division of Food Sciences, College of Health Industry, Eulji University, Seongnam 461-713, Republic of Korea

Correspondence
Chi Nam Seong
scnu{at}scnu.ac.kr

A marine bacterial strain, designated A71^T, was isolated from marine algae collected from the South Sea, Republic of Korea. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain A71^T belonged to the family Flavobacteriaceae and was closely related to Aequorivita antarctica SW49^T (96.5 % sequence similarity). Cells of strain A71^T were Gram-negative, aerobic, oxidase-negative, catalase-positive, yellow/orange-pigmented and non-motile. The major fatty acids were iso-C_{15 : 0} (20.6 %), iso-C_{17 : 1}9c (13.3 %), anteiso-C_{15 : 0} (13.1 %), iso-C_{17 : 0} 3-OH (12.7 %) and summed feature 3 (comprising iso-C_{15 : 0} 2-OH and/or C_{16 : 1}7c; 6.6 %). The DNA G+C content was 36.9 mol%. Several phenotypic characteristics served to differentiate the isolate from recognized members of the genus Aequorivita. Data from this polyphasic study clearly demonstrated that strain A71^T represents a novel species of the genus Aequorivita. The name Aequorivita capsosiphonis sp. nov. is proposed, with strain A71^T (=KCTC 22183^T =JCM 15070^T) as the type strain. In addition, an emended description of the genus Aequorivita is presented.

Scanning electron and phase-contrast micrographs of cells of strain A71^T are available in a supplementary figure with the online version of this paper.