Table 1.
PGP properties and enzyme activity of selected isolates.
| Isolate | Host crop | Location | PGP properties |
Hydrolytic enzymes activity |
|||||
|---|---|---|---|---|---|---|---|---|---|
| Growth on N free medium | Inorganic P solubilization | Siderophore production | IAA production | Cellulase | Protease | Chitinase | |||
| IC6 | Cucumber | Isfahan | 1 | 0.1 ± 0.1 | 0.3 ± 0.1 | 9.2 ± 0.0 | 1.0 ± 0.0 | 0.3 ± 0.0 | 1.0 ± 0.0 |
| IC10 | Cucumber | Isfahan | 1 | 0.2 ± 0.0 | 0.4 ± 0.0 | 27.1 ± 0.1 | 0.0 ± 0.0 | 1.0 ± 0.0 | 0.9 ± 0.1 |
| IC13 | Cucumber | Isfahan | 1 | 0.3 ± 0.0 | 0.4 ± 0.0 | 32.3 ± 2.6 | 1.0 ± 0.0 | 0.6 ± 0.0 | 0.9 ± 0.1 |
| IS8 | Cucumber | Isfahan | 1 | 1.9 ± 0.1 | 0.4 ± 0.0 | 21.9 ± 0.9 | 0.0 ± 0.0 | 0.4 ± 0.0 | 1.0 ± 0.0 |
| SS12 | Cucumber | Isfahan | 1 | 0.1 ± 0.0 | 0.3 ± 0.0 | 24.1 ± 1.9 | 1.0 ± 0.0 | 0.5 ± 0.0 | 0.8 ± 0.1 |
| CU122 | Cucumber | Isfahan | 1 | 0.2 ± 0.0 | 0.1 ± 0.0 | 20.5 ± 0.7 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
| IC15 | Cucumber | Isfahan | 1 | 0.3 ± 0.0 | 0.3 ± 0.0 | 9.6 ± 1.2 | 0.0 ± 0.0 | 0.3 ± 0.0 | 0.9 ± 0.0 |
| SS14 | Cucumber | Isfahan | 1 | 0.0 ± 0.0 | 0.3 ± 0.0 | 24.5 ± 0.7 | 1.0 ± 0.0 | 0.5 ± 0.0 | 0.0 ± 0.0 |
| IT20 | Tomato | Isfahan | 1 | 0.2 ± 0.0 | 0.4 ± 0.0 | 24.0 ± 1.3 | 1.0 ± 0.0 | 0.5 ± 0.0 | 0.0 ± 0.0 |
| IT8 | Tomato | Isfahan | 1 | 0.0 ± 0.0 | 0.4 ± 0.0 | 25.8 ± 0.5 | 1.0 ± 0.0 | 0.2 ± 0.0 | 0.0 ± 0.0 |
| IT25 | Tomato | Isfahan | 1 | 0.2 ± 0.0 | 0.5 ± 0.0 | 25.8 ± 1.8 | 0.0 ± 0.0 | 0.3 ± 0.0 | 0.8 ± 0.2 |
| Y7 | Cucumber | Yazd | 1 | 0.5 ± 0.1 | 0.0 ± 0.0 | 7.7 ± 0.9 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
| Y18 | Cucumber | Yazd | 1 | 0.1 ± 0.0 | 0.0 ± 0.0 | 12.0 ± 0.6 | 1.0 ± 0.0 | 0.9 ± 0.1 | 0.8 ± 0.2 |
| Y27 | Tomato | Yazd | 1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 30.8 ± 1.1 | 1.3 ± 0.4 | 0.3 ± 0.0 | 0.0 ± 0.0 |
| TO612 | Tomato | Yazd | 1 | 0.0 ± 0.0 | 0.5 ± 0.0 | 24.7 ± 0.3 | 1.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
| Y17 | Tomato | Yazd | 1 | 0.0 ± 0.0 | 0.4 ± 0.0 | 13.7 ± 2.8 | 1.0 ± 0.0 | 0.4 ± 0.0 | 0.6 ± 0.3 |
| Y28 | Tomato | Yazd | 1 | 0.4 ± 0.0 | 0.3 ± 0.0 | 16.8 ± 2.1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.9 ± 0.0 |
| Y281 | Tomato | Yazd | 1 | 0.3 ± 0.0 | 0.3 ± 0.0 | 10.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
| Y16 | Tomato | Yazd | 1 | 0.0 ± 0.0 | 0.4 ± 0.1 | 11.4 ± 0.5 | 1.4 ± 0.4 | 0.0 ± 0.0 | 0.0 ± 0.0 |
| Y33 | Tomato | Yazd | 1 | 0.2 ± 0.0 | 0.0 ± 0.0 | 9.3 ± 0.2 | 1.0 ± 0.0 | 0.3 ± 0.0 | 0.8 ± 0.2 |
| Y34 | Tomato | Yazd | 1 | 0.3 ± 0.1 | 0.3 ± 0.0 | 11.8 ± 0.9 | 1.2 ± 0.2 | 0.2 ± 0.0 | 0.7 ± 0.3 |
| KH12 | Cucumber | Kerman | 1 | 0.0 ± 0.0 | 0.1 ± 0.0 | 7.5 ± 0.7 | 0.2 ± 0.1 | 0.3 ± 0.1 | 0.0 ± 0.0 |
| K40 | Cucumber | Kerman | 1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 27.5 ± 2.2 | 0.2 ± 0.0 | 0.4 ± 0.0 | 1.0 ± 0.0 |
| K43 | Cucumber | Kerman | 1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 22.5 ± 3.5 | 1.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
The means halo zone diameter/ colony diameter of three replications ± standard deviation is represented. 1, growth; 0, no growth. The data indicated for IAA production was in μg/mL.