Algimonas

Abstract

Al.gi.mo'nas. L. fem. n. alga seaweed; L. fem. n. monas a monad, a unit; N.L. fem. n. Algimonas a monad isolated from seaweed. Proteobacteria / Alphaproteobacteria / Rhodobacterales / Hyphomonadaceae / Algimonas The genus Algimonas comprises three species, Algimonas porphyrae (the type species), Algimonas ampicilliniresistens , and Algimonas arctica . Cells exhibit rod‐shaped morphology. One cell possesses a single polar flagellum and the other, a prosthecum. Cell division occurs by binary fission. Colonies are round, convex, and orange or pale orange. Cells are Gram‐negative, motile, aerobic, and produce carotenoid pigments but not bacteriochlorophyll a . Growth occurs at 10–30°C (optimum, 20–25°C), pH 6.0–9.0 (optimum, 7.0–8.0), and 1.0–5.0% NaCl (optimum, 2.0–3.0%). Cells are positive for catalase, nitrate reduction, and hydrolysis of esculin and negative for methyl red and Voges–Proskauer reactions, indole and H 2 S production, and hydrolysis of starch and gelatin. Analysis of 16S rRNA gene sequences revealed that the genus Algimonas belongs to the family Hyphomonadaceae and is related to the genera Litorimonas , Fretibacter , Hellea , and Robiginitomaculum . The predominant respiratory quinone is ubiquinone‐10. The major polar lipids are phosphatidylglycerol, glucuronopyranosyl diglyceride, monoglycosyl diglyceride, and three unidentified phospholipids. The major fatty acids (>10%) are C 18:1 ω7 c and C 18:1 2‐OH. Members of the genus have been isolated from marine red alga or intertidal sand. DNA G + C content (mol%) : 54.3–60.6 (HPLC or T m ). Type species : Algimonas porphyrae Fukui et al. 2013a VP .