Table 1.
Traits of plant growth-promoting bacteria in soil isolates from Nanmangalam Reserve Forest
| No. | Strain name | Ammonia (ppm) | Total N (ppm) | NifH | IAA (µg mL−1) | ACC | Salicylic acid (µg mL−1) | ARA (nmol C2H4 mg protein−1 min−1) |
Siderophore | HCN | Solubilization | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P | Si | Zn | |||||||||||
| 1 | RRN12 | 536.48 | 156.2 | + | 9.4 | + | 5.1 | 0.34 | + | − | + | − | − |
| 2 | RRB2 | 453.12 | 189.42 | + | 4.5 | + | 4.23 | 0.41 | + | − | + | − | − |
| 3 | RRD8 | 412.23 | 78.23 | + | 8.6 | − | 3.1 | 0.56 | − | − | + | − | + |
| 4 | RRC11 | 401.12 | 78.4 | + | 5.4 | + | 3.1 | 0.22 | − | − | + | − | − |
| 5 | RRR10 | 561.12 | 60.2 | + | 9.4 | + | 7.2 | 0.67 | + | − | + | − | − |
| 6 | RRAK1 | 593.1 | 136.4 | + | 9.8 | + | 6.8 | 0.79 | + | − | + | + | + |
| 7 | RR07 | 446.1 | 67.56 | + | 3.2 | − | 3.41 | 0.97 | − | − | + | − | − |
| 8 | RRALC3 | 601.34 | 158.2 | + | 8.4 | + | 7.23 | 0.78 | + | − | + | + | − |
| 9 | RRAJ2 | 484.22 | 68.6 | + | 5.6 | − | 0.7 | 0.59 | + | − | + | − | − |
| 10 | RRAK5 | 439.7 | 143.23 | + | 8.9 | + | 10.1 | 0.83 | + | − | + | + | + |
| 11 | RRAR1 | 456.16 | 156.2 | + | 8.5 | + | 1.2 | 0.61 | + | − | + | − | − |
| 12 | RRAN2 | 425.19 | 253.2 | + | 8.2 | − | 6 | 0.23 | + | − | + | + | + |
IAA indole acetic acid, HCN hydrocyanic acid, ACC 1-aminocyclopropane-1-carboxylic acid, ARA acetylene reduction assay