Table 2.
Indole acetic acid (IAA) production, phosphate (P) P solubilization, siderophore production, and hydrogen cyanide (HCN) production by bacterial strains
| Strain | IAA production | P solubilization | Siderophore production | HCN production |
|---|---|---|---|---|
| H1 (++) | − | + | − | − |
| H2 (−) | − | − | − | − |
| H3 (++) | + | + | + | + |
| H4 (+) | − | − | + | + |
| H5 (+/−) | − | − | − | − |
| H6 (−) | − | + | + | + |
| H7 (+) | + | + | − | − |
| H8 (++) | − | − | − | + |
| H9 (+/−) | + | − | − | + |
| H10 (+/−) | − | − | − | + |
| M1 (++) | + | + | + | + |
| M2 (++) | − | + | + | − |
| M3 (−−) | − | + | + | − |
| M4 (+/−) | − | + | + | + |
| M5 (−−) | − | − | − | − |
| M6 (−−) | + | − | + | + |
| M7 (+/−) | + | − | − | − |
| M8 (+) | + | − | − | − |
| M9 (+/−) | + | − | − | − |
| M10 (+/−) | − | + | + | + |
| M11 (+/−) | − | + | + | + |
| M12 (++) | + | + | + | + |
Symbols in parentheses indicate the effects on plant growth of strains (Fig. 3): ++, greater than 10%; +, between +5 and +10%; +/−, between −5 and +5%; −, between −5 and −10%; −−, less than −10%