Table 3 Phage ɸsp1 biocontrol efficacy in potato tuber slice bioassay using Ralstonia solanacearum strain 1629 (R 1629)
Experimental set-up | Disease symptoms | Grade | Microbial count CFU g−1 | Phage re-isolated PFU g−1 |
|---|---|---|---|---|
Control | No vascular discoloration, ooze absent with no change in tissue architecture | 0 | No Ralstonia | No plaques |
R1629 | Vascular discoloration with brown ring-like appearance, slimy ooze, tissue necrosis | 3 | 9.68×1010 | No plaques |
R1629 + phage ɸsp1 | Yellowing, ooze absent, tissue intact | 1 | 2.5×104 | 2×104 |