Gelidibacter

• Main Author: Bowman, John P.
• Format: Other/Unknown Material
• Language: English
• Published: Wiley 2015
• Subjects: Antarc*; Antarctica; Sea ice
• Online Access: http://dx.doi.org/10.1002/9781118960608.gbm00315; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F9781118960608.gbm00315; https://onlinelibrary.wiley.com/doi/pdf/10.1002/9781118960608.gbm00315; https://onlinelibrary.wiley.com/doi/full-xml/10.1002/9781118960608.gbm00315

Ge.li.di.bac'ter. L. adj. gelidus ice‐cold or icy; N.L. masc. n. bacter rod; N.L. masc. n. Gelidibacter ice‐cold or icy rod. Bacteroidetes / Flavobacteriia / Flavobacteriales / Flavobacteriaceae / Gelidibacter Cells are rod‐shaped or filamentous with rounded ends , 0.4–0.6 × 1–15 µm. Gram‐stain‐negative . Cells occur singly, in pairs, and occasionally in chains. Spores and resting cells are not present. Gas vesicles and helical or ring‐shaped cells are not formed. Motile by gliding . Strictly aerobic , with an oxidative type of metabolism . Catalase‐positive . Oxidase‐negative . Chemoheterotrophic . Colonies are yellow due to production of carotenoids. Flexirubin pigments are not produced . Strains require Na + for good growth. Best growth occurs in organic media containing seawater salts. Hydrolyze esculin, produce glutamate decarboxylase, and utilize D ‐glucose, glycogen and L ‐proline. Growth occurs between <4 and 25°C (optimum, 20–25°C). Neutrophilic, with optimal growth occurring at pH 7.0–7.5. The major fatty acids include C 15:1 ω10 c iso, C 15:1 ω10 c anteiso, C 15:0 iso, C 15:0 anteiso, C 16:1 ω7 c , and C 16:0 3‐OH iso. The major polyamine is homospermidine and the major isoprenoid quinone is menaquinone‐6 . The organisms inhabit seawater, polar sea‐ice, polar saline lakes, and quartz stone sublithic communities from maritime, ice‐free areas of Antarctica. DNA G + C content ( mol %): 37–42. Type species : Gelidibacter algens Bowman, McCammon, Brown, Nichols and McMeekin 1997, 675 VP .