Table 2. Effect of time and hairy roots presence on relative abundance of bacterial families present in horticultural growing media (n = 10).
| Taxonomy | Time point | Growing medium |
P value | Time effect | Time * hairy roots interaction | |
|---|---|---|---|---|---|---|
| RW (Mean ± SEM) | RWS (Mean ± SEM) | |||||
| Hyphomicrobiaceae | 1 | 1.53 ± 0.57 | 0.00 | NS | 0.01 | NS |
| 2 | 4.47 ± 0.57 | 3.86 ± 0.57 | ||||
| 3 | 1.76 ± 0.57 | 1.68 ± 0.57 | ||||
| Methylophilaceae | 1 | 1.54 ± 0.96 | 0.00 | 0.03 | NS | NS |
| 2 | 4.09 ± 0.96a | 0.35 ± 0.96b | ||||
| 3 | 1.95 ± 0.96 | 0.005 ± 0.96 | ||||
| Planctomycetaceae | 1 | 0.005 ± 0.05 | 0.00 | 0.0003 | 0.0007 | 0.0002 |
| 2 | 0.02 ± 0.05a | 1.06 ± 0.05b | ||||
| 3 | 0.07 ± 0.05 | 0.01 ± 0.05 | ||||
| Rhizobiaceae | 1 | 2.94 ± 0.85 | 0.00 | 0.0001 | 0.03 | 0.05 |
| 2 | 1.02 ± 0.85a | 7.91 ± 0.85b | ||||
| 3 | 2.02 ± 0.8a | 13.02 ± 0.85b | ||||
| Verrucomicrobiaceae | 1 | 0.57 ± 0.45 | 0.00 | 0.02 | 0.02 | 0.2 |
| 2 | 0.98 ± 0.45a | 3.96 ± 0.45b | ||||
| 3 | 0.52 ± 0.45 | 0.53 ± 0.45 | ||||
| Vibrionaceae | 1 | 0.16 ± 0.005 | 0.00 | NS | < 0.0001 | NS |
| 2 | 0.00 | 0.01 ± 0.005 | ||||
| 3 | 0.00 | 0.00 | ||||
RW, mineral growing medium, n = 6. RWS, mineral growing medium with hairy roots, n = 4. NS = not significant effect. Different superscripts indicate significantly different means. “0.00” indicates zero relative abundance detected.