AZOTOBACTER
Genus Azotobacter
Species Azotobacter armeniacus
Azotobacter beijerinckii
Azotobacter chroococcum
Azotobacter nigricans subsp. achromogenes
Azotobacter nigricans subsp. nigricans
Azotobacter salinestris
Azotobacter vinelandii
Description

Gram-negative; fixation of nitrogen; production of intracellular poly-beta-hydroxybutyrate; chemoheterotrophic; strict aerobic; catalase-positive; formation of a yellowish or cinnamon pigment; no utilization of rhamnose or starch as sole carbon source.

Morphological definition

arrangement singly, in pairs or in short chains  

no endospore formation

nonmotile

rods with bluntly rounded ends

Availability Soil
Function Nitrogen Fixers
Nucleotide,Protein Sequences & 3DStructures