A equorivita

• Main Author: Bowman, John P.
• Format: Other/Unknown Material
• Language: English
• Published: Wiley 2017
• Subjects: Antarc*; Antarctica; Sea ice
• Online Access: http://dx.doi.org/10.1002/9781118960608.gbm00293.pub2; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F9781118960608.gbm00293.pub2; https://onlinelibrary.wiley.com/doi/pdf/10.1002/9781118960608.gbm00293.pub2; https://onlinelibrary.wiley.com/doi/full-xml/10.1002/9781118960608.gbm00293.pub2

Ae.quo.ri.vi'ta. L. n. aequor ‐oris the even surface of the sea in its quiet state; L. fem. n. vita life; N.L. fem. n. Aequorivita life (living being) at the sea surface. Bacteroidetes / Flavobacteriia / Flavobacteriales / Flavobacteriaceae / Aequorivita Cells are straight or slightly curved rods or filaments , 0.5–20 × 0.2–2.2 µm. Gram‐stain‐negative . Cells occur singly or in pairs. Spores and resting cells are not present. Gas vesicles or ring‐shaped cells are not formed. Nonmotile. Strictly aerobic . Catalase‐positive. Oxidase test is negative or only weakly positive. Chemoheterotrophic. Nonagarolytic. Colonies are orange or yellow due to production of carotenoids. Flexirubin pigments are not produced . Most species require sea salts or Na + ions for growth. Tolerates up to 6% NaCl; growth with 10% NaCl is either weak or absent. Best growth occurs in organic media containing 1–3% NaCl or seawater salts. All species produce alkaline phosphatase and esterase (Tween 80) and hydrolyze l ‐tyrosine and gelatin . Some species are strongly proteolytic and/or lipolytic. Growth occurs between 4 and 25°C. Some species can grow at 37°C. Optimal growth occurs at 20–30°C depending on the species. Optimal growth occurs at pH 7.0–8.5. The major fatty acids are C 15:1 iso, C 15:0 iso, C 15:0 anteiso, C 17:1 iso, C 15:0 3‐OH iso, and C 17:0 3‐OH iso. Known habitats include polar ocean seawater, sea‐ice, quartz stone sublithic biofilm, and surfaces of seaweed communities . Also reported to be associated with deep‐sea invertebrates. DNA G + C content ( mol% ): 33–39 ( T m , HPLC, genome sequences). Type species : Aequorivita antarctica Bowman and Nichols 2002, 1539 VP emend. Park et al., 2009, 726 VP emend. Liu, Zhang, Pan, Sun, Zhang, Li, Zhu and Wu 2013 3194 VP .