A novel bacterial strain, designated Q15(T), was isolated from sediments obtained from the Bohai Sea in China and subjected to a polyphasic taxonomic study. Cells of strain Q15(T) were Gram-stain-negative, strictly aerobic rods that produced circular, flat, orange colonies. Phylogenetic analysis based on 16S rRNA gene sequences revealed that Q15(T) was affiliated with the genus Carboxylicivirga in the family Marinilabiliaceae of the phylum Bacteroidetes. Strain Q15T differed genotypically from the type strains of the three recognized species of this genus (Carboxylicivirga taeanensis MEBiC 08903(T), Carboxylicivirga mesophila MEBiC 07026(T) and Carboxylicivirga linearis FB218(T)) and shared 94.0-95.2 % 16S rRNA gene sequence similarity with them. The DNA G+C content of strain Q15(T) was 44.7 mol%. The predominant cellular fatty acids were iso-C-15 : 0, anteiso-C-15 : 0 and iso-C-17 : 0 3-OH, and menaquinone MK-7 was the main respiratory quinone. Polar lipids contained phosphatidylethanolamine, an unidentified aminolipid, an unidentified phospholipid and other unknown lipids. Based on the data from the current polyphasic analysis, a novel species, Carboxylicivirga flava sp. nov., is hereby proposed with Q15(T) (=CICC 23923(T)=KCTC 42707(T)) as the type strain.
WOS Subject Extended:
Strategic Priority Research Program of Chinese Academy of Sciences(XDA11020403)
; Hundred Talents Program of Chinese Academy of Sciences(XDA11020403)
; Key Research Program of Chinese Academy of Sciences(KZZD-EW-14)
; National Natural Science Foundation of China(41376138
; Science and Technology Program of Shandong Province(2013GHY11534)
WOS Keyword Plus:
XIAMENENSIS GEN. NOV.
; FAMILY MARINILABILIACEAE
; SODA LAKE
; COMB. NOV