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Updated: Feb 6, 2026

Seawater Sampling and Collection
Published on: June 17, 2009
Winogradskyella aurantiaca sp. nov., isolated from seawater
Jaeho Song1, Hyoung Tae Jeon1, Yeonjung Lim1
1Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea.
Abstract:
A Gram-stain-negative, non-flagellated, motile-by-gliding, orange-coloured bacterial strain, designated strain IMCC20180T, was isolated from seawater collected off the coast of the East Sea in the Republic of Korea. The 16S rRNA gene sequence analysis showed that strain IMCC20180T was most closely related to Winogradskyellaporiferorum UST030701-295T (95.7 % sequence similarity) and formed a robust phylogenetic clade with other Winogradskyella species, indicating that the strain was affiliated with the genus Winogradskyella. Growth of strain IMCC20180T was observed at 20-30 °C (optimum, 25 °C), pH 7.0-9.0 (pH 8.0) and with 1.0-3.5 % NaCl (3.0 %, w/v). The predominant isoprenoid quinone was MK-6. Major fatty acid constituents were iso-C15 : 1 G, summed feature 3 (C16 : 1ω6c and/or C16 : 1ω7c), iso-C15 : 0, iso-C17 : 0 3-OH and iso-C16 : 0 3-OH. The major polar lipids were phosphatidylethanolamine, four unknown aminolipids and five unknown lipids. The estimated genome size and the DNA G+C content of strain IMCC20180T were 3.1 Mb and 37.7 %, respectively. Based on 16S rRNA gene phylogeny, physiological and chemotaxonomic characterization, strain IMCC20180T represented a novel species in the genus Winogradskyella, for which the name Winogradskyellaaurantiaca sp. nov. is proposed. The type strain is IMCC20180T (=KACC 18883T=KCTC 52240T=JCM 31383T).
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