Table 2.
Bacterial characterization of the isolates from the rhizosphere of snowbrush ceanothus from the greenhouse conditions based on catalase production, siderophore, phosphate solubilization, nitrogen fixation, and IAA production.
| S. No. | Code | Catalase | SP | PS | NF | IAA | BLAST | Accession numbers | |
|---|---|---|---|---|---|---|---|---|---|
| Media | nifH+ | ||||||||
| 1 | GK_GR_41 | ++ | +++ | ++ | ++ | + | 14.08 ± 0.58 | Pseudomonas sp. | OP407589 |
| 2 | GK_GR_42 | ++ | + | +++ | +++ | – | 6.05 ± 0.27 | Pseudomonas sp. | OP407590 |
| 3 | GK_GR_44 | – | – | – | – | ND | 1.49 ± 0.02 | Streptomyces sp. | OP407592 |
| 4 | GK_GR_45 | – | + | +++ | +++ | – | 7.35 ± 0.04 | Pseudomonas sp. | OP407593 |
| 5 | GK_GR_51 | + | ++ | – | – | ND | 1.69 ± 0.05 | Variovorax sp. | OP407594 |
| 6 | GK_GR_52 | ++ | +++* | +++ | +++ | – | 11.33 ± 1.23 | Pseudomonas sp. | OP407595 |
| 7 | GK_GR_55 | ++ | +++* | ++ | +++ | – | 9.82 ± 0.17 | Pseudomonas sp. | OP407596 |
| 8 | GK_GR_58 | + | – | – | – | ND | 1.08 ± 0.04 | Streptomyces sp. | OP407597 |
| 9 | GK_GR_59 | + | – | – | – | ND | 2.19 ± 0.06 | Priestia sp. | OP407598 |
| 10 | GK_GR_60 | + | +++* | +++ | ++ | – | 12.27 ± 0.04 | Pseudomonas sp. | OP407599 |
| 11 | GK_GR_61 | + | – | – | – | ND | 12.02 ± 0.40 | Agrobacterium sp. | OP407600 |
| 12 | GK_GR_64 | + | +++ | + | +++ | + | 10.60 ± 0.17 | Pseudomonas sp. | OP407601 |
| 13 | GK_GR_66 | – | +++ | – | ++ | + | 3.82 ± 0.03 | Pseudomonas sp. | OP407602 |
| 14 | GK_GR_68 | + | – | – | – | ND | 5.27 ± 0.05 | Streptomyces sp. | OP407603 |
| 15 | GK_GR_70 | ++ | + | – | – | ND | 6.25 ± 0.43 | Xenophilus sp. | OP407604 |
| 16 | GK_GR_72 | + | ++ | – | – | ND | 6.65 ± 0.50 | Xenophilus sp. | OP407605 |
| 17 | GK_GR_73 | + | ++ | + | + | – | 3.46 ± 0.06 | Bacillus sp. | OP407606 |
| 18 | GK_GR_74 | ++ | + | – | – | ND | 3.09 ± 0.17 | Priestia sp. | OP407607 |
| 19 | GK_GR_75 | – | – | – | – | ND | 8.96 ± 0.33 | Priestia sp. | OP407608 |
| 20 | GK_GR_79 | – | + | – | – | ND | 7.00 ± 0.57 | Acidovorax sp. | OP407609 |
| 21 | GK_GR_81 | – | + | – | – | ND | 2.01 ± 0.09 | Pedobacter sp. | OP407610 |
| 22 | GK_GR_88 | + | – | – | – | ND | 3.18 ± 0.10 | Priestia sp. | OP407611 |
| 23 | GK_GR_90 | + | +++* | ++ | ++ | + | 5.19 ± 0.16 | Pseudomonas sp. | OP407612 |
| 24 | GK_GR_94 | + | + | +++ | ++ | – | 4.16 ± 0.02 | No match | - |
| 25 | GK_GR_97 | ++ | ++ | – | – | ND | 0.03 ± 0.05 | Peribacillus ap. | OP407613 |
| 26 | GK_GR_98 | ++ | ++ | + | +++ | + | 11.79 ± 0.08 | Pseudomonas sp. | OP407614 |
| 27 | GK_GR_99 | ++ | + | – | – | ND | 2.39 ± 0.07 | Brevundimonas sp. | OP407615 |
| 28 | GK_GR_104 | + | +++ | + | +++ | – | 5.49 ± 0.09 | No match | - |
| 29 | GK_GR_106 | + | + | + | + | – | 5.82 ± 0.23 | Ancylobacter sp. | OP407616 |
| 30 | GK_GR_109 | – | +++ | ++ | ++ | – | 0.49 ± 0.19 | No match. | - |
| 31 | GK_GR_111 | + | – | – | – | ND | 3.28 ± 0.07 | Streptomyces sp. | OP407617 |
| 32 | GK_GR_112 | + | +++ | – | +++ | – | 3.86 ± 0.06 | Pseudomonas sp. | OP407618 |
| 33 | GK_GR_115 | + | +++* | – | +++ | + | 4.68 ± 0.06 | Pseudomonas sp. | OP407619 |
| 34 | GK_GR_119 | + | ++ | +++ | +++ | + | 0.43 ± 0.07 | Pseudomonas sp. | OP407620 |
| 35 | GK_GR_122 | + | – | – | – | ND | 6.29 ± 0.09 | Streptomyces sp. | OP407621 |
| 36 | GK_GR_124 | ++ | – | – | – | ND | 0.05 ± 0.03 | No match | - |
‘-’ negative/absent, ‘+’ mild positive/present, ‘++’ moderately positive, ‘+++’ strongly positive, ‘+++*’ highly positive, SP- Siderophore production, PS-Phosphate solubilization, NF-Nitrogen Fixation, IAA- Indole Acetic Acid production (µg/ml), ND- Not Done, nifH+(Fe subunit of nitrogenase gene). Bold values are the highest IAA production in greenhouse isolates.