Abstract
A.zo' spi.ra. Fr. n. azote nitrogen; L. fem. n. spira winding, turn; M.L. fem. n. Azospira nitrogen-fixing spiral.
Proteobacteria / Betaproteobacteria / Rhodocyclales / Rhodocyclaceae / Azospira
Gram-negative curved motile rods (0.4–0.6 × 1.1–2.5 µm). One polar flagellum. Cells elongated in stationary cultures. Chemoorganoheterotrophic and aerobic; microaerophilic when fixing N2. Strictly respiratory; O2 and nitrate are electron acceptors. Oxidase and catalase positive. Fix N2 . Grow on acetate, n-caproate, ethanol, fumarate, L-glutamate, DL-lactate, L-malate, 2-oxoglutarate, propionate, and succinate.
The mol% G + C of the DNA is: 65–66.
Type species: Azospira oryzae Reinhold-Hurek and Hurek 2000, 658.
