Table 3 Carbon source utilzation by Azotobacter species isolated from rice rhizosphere soils in Taiwan expressed as a percentage of the total of each species. Azotobacter species were grown in the phenol red broth amended with 0.5% (w/v) each of galactose, glucose, maltose, mannitol, and rhamnose
| Â | Â | Carbon source | ||||
|---|---|---|---|---|---|---|
Species | Number of isolates | Galactose | Glucose | Maltose | Mannitol | Rhamnose |
A. beijerinckii | 30 | 56.7 | 60.0 | 70.0 | 80.0 | 36.7 |
A. chroococcum | 50 | 60.0 | 68.0 | 62.0 | 74.0 | 42.0 |
A. tropicalis | 16 | 50.0 | 50.0 | 68.8 | 81.3 | 62.5 |
A. vinelandii | 2 | 0 | 100 | 50.0 | 50.0 | 0 |
Combined | 98 | 56.1 | 63.3 | 65.3 | 76.5 | 42.9 |