Aequorivita

• Main Author: Bowman, JP
• Format: Text
• Language: English
• Published: John Wiley & Sons, Inc and Bergey's Manual Trust 2018
• Subjects: Biological Sciences; Microbiology; Microbial Ecology; Antarc*; Antarctica; Sea ice
• Online Access: https://doi.org/10.1002/9781118960608.gbm00293.pub2; http://ecite.utas.edu.au/131989

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 , 0.520 0.22.2 m. 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 13% 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 25C. Some species can grow at 37C. Optimal growth occurs at 2030C depending on the species. Optimal growth occurs at pH 7.08.5. 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% ): 3339 ( 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 .