Sejongia

• Main Authors: Yi, Hana, Chun, Jongsik
• Format: Other/Unknown Material
• Language: English
• Published: Wiley 2015
• Subjects: King Sejong Station; Antarc*; Antarctica
• Online Access: http://dx.doi.org/10.1002/9781118960608.gbm00341; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F9781118960608.gbm00341; https://onlinelibrary.wiley.com/doi/pdf/10.1002/9781118960608.gbm00341; https://onlinelibrary.wiley.com/doi/full-xml/10.1002/9781118960608.gbm00341

Se.jong'i.a. N.L. fem. n. Sejongia named after the King Sejong Station, where the type species was isolated. Bacteroidetes / Flavobacteriia / Flavobacteriales / Flavobacteriaceae / Sejongia Rods with parallel sides and rounded ends, generally 0.4–0.5 × 1.0–3.1 µm. Gram‐stain‐negative. Spores are not formed. Nonmotile. Do not glide or spread. Aerobic , exhibiting only weak growth under microaerobic and anaerobic conditions. Pychrotolerant , with optimum growth temperatures of 19–22°C. Optimum growth is observed at pH 7–8 and in 0% NaCl. Growth occurs on R2A, Anacker and Ordal's agar (AOA), nutrient agar (NA) and tryptic soy agar (TSA), but not on cetrimide or MacConkey agars. Colonies are convex, translucent, circular, glistening, butyrous, and yellow with entire margins, becoming mucoid after prolonged incubation on R2A. Do not adhere to agar plates. Catalase‐ and oxidase‐positive. Congo red is not adsorbed. The maximum absorption peak of the yellow pigment in ethanolic extracts is at 452 nm and the next shoulder peak is at 480 nm. No flexirubin‐type pigments are produced . Acid is produced aerobically or fermentatively from some carbohydrates. The major isoprenoid quinone is MK‐6. The predominant cellular fatty acids are C 15:0 iso (12.2–13.6%), C 15:0 anteiso (15.2–24.2%), and C 17:1 iso ω9 c (8.6–21.3%). DNA G + C content ( mol %): 34–36. Type species : Sejongia antarctica Yi, Yoon and Chun 2005b, 414 VP .