Subsaximicrobium

• Main Author: Bowman, John P.
• Format: Other/Unknown Material
• Language: English
• Published: Wiley 2015
• Subjects: Antarctic; Saxum; Antarc*
• Online Access: http://dx.doi.org/10.1002/9781118960608.gbm00344; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F9781118960608.gbm00344; https://onlinelibrary.wiley.com/doi/pdf/10.1002/9781118960608.gbm00344; https://onlinelibrary.wiley.com/doi/full-xml/10.1002/9781118960608.gbm00344

Sub.sa.xi.mi.cro'bi.um. L. pref. sub below; L. neut. n. saxum stone; N.L. neut. n. microbium microbe; N.L. neut n. Subsaximicrobium microbe living below stone. Bacteroidetes / Flavobacteriia / Flavobacteriales / Flavobacteriaceae / Subsaximicrobium Straight rod‐shaped cells , 0.3–0.5 × 1–6 µm. In stationary growth phase cultures, cells may transform into spheroplasts, 1–3 µm in diameter. Gram‐stain‐negative . Cells occur singly or in pairs. Spores and resting cells are not present. Gas vesicles and helical or ring‐shaped cells are not formed. Gliding motility is present. Strictly aerobic. Oxidative metabolism. Catalase‐positive. Oxidase‐positive. Chemoheterotrophic. Colonies are orange due to production of carotenoids. Flexirubin pigments are not produced. Sodium ions are required for growth. Best growth occurs in organic media containing seawater salts. Psychrophilic . Grows between −2 and 20°C, with temperature optima at 15–20°C in seawater or NaCl‐containing media. Neutrophilic, with optimal growth occurring at about pH 7.5–8.0. The major fatty acids include C 15:1 iso ω10 c , C 15:1 anteiso ω10 c , C 15:0 iso, C 15:0 anteiso, C 16:1 ω7 c , C 15:0 anteiso 3‐OH, and C 16:0 iso 3‐OH. The major isoprenoid quinone is menaquinone‐6 . Inhabits Antarctic quartz stone sublithic cyanobacterial biofilms. DNA G + C content ( mol %): 39–40. Type species : Subsaximicrobium wynnwilliamsii Bowman and Nichols 2005, 1481 VP .