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Antonie Van Leeuwenhoek. 2014 Aug;106(2):261-9. doi: 10.1007/s10482-014-0190-8. Epub 2014 May 28.

Citreitalea marina gen. nov., sp. nov., a novel member of the family Flavobacteriaceae isolated from a marine red alga and emended description of the genus Gangjinia.

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  • 1College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-Gu, Daegu, 704-701, Republic of Korea,


A Gram-negative, strictly aerobic, pale-yellow pigmented, rod-shaped bacterium designated A4O-5(T) was isolated from a red coloured marine alga (Chondrus ocellatus Holmes). Phylogenetic analyses based on the 16S rRNA gene sequence indicated that the new strain was affiliated with the family Flavobacteriaceae and shared approximately 90 % sequence similarity with Leptobacterium flavescens YM3-0301(T) and Gangjinia marincola GJ16(T). The strain could be differentiated phenotypically from the related members of the family Flavobacteriaceae. The major fatty acids of strain A4O-5(T) were identified as iso-C15:0, iso-C17:0 3-OH and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c). A complex polar lipid profile was present consisting of phosphatidylethanolamine, an unidentified phospholipid, three unidentified amino lipids and an unidentified lipid. The DNA G+C content of the strain was determined to be 41.9 mol% and the major respiratory quinone was identified as menaquinone 6 (MK-6). From the distinct phylogenetic position and combination of genotypic and phenotypic characteristics, the strain is considered to represent a novel genus in the family Flavobacteriaceae, for which the name Citreitalea marina gen. nov., sp. nov. is proposed. The type strain of C. marina is A4O-5(T) (=KCTC 32483(T)=NBRC 109918(T)).

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