Abstract
Ro.se.i.vir'ga. L. adj. roseus pink-colored; L. fem. n. virga rod; N.L. fem. n. Roseivirga a pink-colored and rod-shaped marine bacterium.
Bacteroidetes / Cytophagia / Cytophagales / Flammeovirgaceae / Roseivirga
Thin rods usually measuring 0.2–0.5 × 2.0–4.0 µm. Gliding motility can be observed. Produce nondiffusible pink-orange pigments. Flexirubin type of pigments can be formed. Chemoorganotrophs. Strictly aerobic. Can require seawater or sodium ions for growth. Oxidase-, catalase-, and alkaline phosphatase-positive. Arginine dihydrolase, lysine, and ornithine decarboxylases, and tryptophan deaminase are absent. Agar, casein, starch, urea, cellulose (CM-cellulose and filter paper), and chitin are not attacked, but gelatin, DNA, and Tweens may be decomposed. H2S and indole are not produced. The major respiratory quinone is MK-7. Marine, from coastal habitats.
DNA G+C content (mol%): 40–45.
Type species: Roseivirga ehrenbergii Nedashkovskaya, Kim, Lee, Lysenko, Shevchenko, Frolova, Mikhailov, Lee and Bae 2005a, 233VP.
