Table 5.
Plant-Growth-Promoting traits-associated proteins identified in the proteome of the selected strains and their abundance.
| PGP Trait | Protein | RHFB | RHF2 | RHF6 | RHF12 | RHF15 | RHFS10 | RHFS18 |
|---|---|---|---|---|---|---|---|---|
| Phosphate solubilization | Pyrroloquinoline quinone | 1 | 1 | 0 | 1 | 1 | 1 | 0 |
| Glucose 1-dehydrogenase | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| Nitrogen fixing | Nitrogenases | 6 | 6 | 4 | 6 | 6 | 6 | 2 |
| Nitric oxide synthesis | Copper-containing nitrite reductase | 1 | 2 | 1 | 3 | 2 | 2 | 1 |
| IAA biosynthesis | Indole-3-pyruvate decarboxylase | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Tryptophan 2-monooxygenase | 4 | 2 | 1 | 2 | 2 | 3 | 2 | |
| Tryptophan synthase (subunit a and b) | 6 | 7 | 6 | 7 | 7 | 5 | 7 | |
| Tryptophan aminotransferase | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Tryptophan decarboxylase | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Indole-3-acetamide hydrolase | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Putrescine and Spermidine-related production | Arginine decarboxylase | 3 | 2 | 2 | 2 | 2 | 2 | 2 |
| Agmatine ureohydrolase | 1 | 1 | 1 | 1 | 1 | 1 | 2 | |
| Ornithine decarboxylase | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| SAM decarboxylase | 1 | 1 | 1 | 1 | 1 | 2 | 1 | |
| Spermidine synthase | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| ACC deaminase activity | ACC deaminase | 2 | 2 | 3 | 1 | 2 | 1 | 3 |
| D-cysteine desulfhydrase | 1 | 0 | 1 | 0 | 0 | 0 | 1 | |
| Antioxidant activity | Peroxidases | 9 | 10 | 4 | 9 | 9 | 8 | 4 |
| Catalases | 10 | 12 | 11 | 11 | 12 | 11 | 8 | |
| Superoxide dismutase | 7 | 5 | 5 | 6 | 5 | 5 | 5 | |
| Glutathione peroxidase | 1 | 1 | 1 | 1 | 2 | 1 | 1 | |
| Glutathione reductase | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Glutathione S-transferase | 2 | 5 | 2 | 2 | 5 | 2 | 3 | |
| Abiotic stress | Choline dehydrogenase | 0 | 1 | 1 | 2 | 2 | 1 | 1 |
| Betaine-aldehyde dehydrogenase | 5 | 2 | 2 | 2 | 2 | 2 | 2 | |
| Proline dehydrogenase | 2 | 3 | 2 | 2 | 2 | 2 | 2 | |
| Cell wall and degrading | β-Glucosidase | 1 | 3 | 2 | 5 | 3 | 3 | 3 |
| α-Glucosidase | 3 | 4 | 4 | 3 | 4 | 4 | 2 | |
| Endo-1,4-β-xylanase | 5 | 7 | 7 | 4 | 5 | 7 | 9 | |
| Glucoamylase | 0 | 0 | 2 | 0 | 0 | 0 | 1 | |
| α-Amylase | 0 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Chitinase | 1 | 0 | 0 | 0 | 0 | 1 | 1 | |
| β-1,3-Glucanase | 2 | 3 | 2 | 1 | 2 | 2 | 1 | |
| Cellulase | 0 | 3 | 2 | 3 | 3 | 4 | 2 | |
| Protease | 4 | 3 | 3 | 3 | 3 | 2 | 1 |
Only ≥40% similarity scores were considered. IAA, indole-3-acetic acid; ACC, 1-aminocyclopropane-1-carboxylate.