Vitellibacter echinoideorum sp. nov., isolated from a sea urchin (Tripneustes gratilla)

A Gram-stain-negative, aerobic, rod-shaped, yellow-pigment-producing bacterium (designated strain CC-CZW007T) was isolated from seafood samples (sea urchins) at Penghu Island in Taiwan. Strain CC-CZW007Tgrew optimally at pH 7.0 and 30 °C in the presence of 3 % (w/v) NaCl. The novel strain shared highest 16S rRNA gene sequence similarity toVitellibacter vladivostokensisJCM 11732T(96.8 %),Vitellibacter soesokkakensisKCTC 32536T(96.4 %),Vitellibacter nionensisKCTC 32420T(95.8 %) andVitellibacter aestuariiJCM 15496T(95.6 %) and lower sequence similarity to members of other genera. Phylogenetic analyses based on 16S rRNA genes revealed a distinct taxonomic position attained by strain CC-CZW007Twith respect to other species of the genusVitellibacter. The major fatty acids were iso-C15 : 0and iso-C17 : 03-OH. The polar lipid profile was composed of major amounts of phosphatidylethanolamine, unidentified lipids and aminolipids; a moderate amount of aminophospholipid was also detected. The DNA G+C content was 34.7 mol%. The predominant quinone system was menaquinone (MK-6). On the basis of polyphasic taxonomic evidence presented here, strain CC-CZW007Tis proposed to represent a novel species within the genusVitellibacter, for which the nameVitellibacter echinoideorumsp. nov. is proposed. The type strain is CC-CZW007T( = BCRC 80886T = JCM 30378T).