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Fig. 5 | Egyptian Journal of Biological Pest Control

Fig. 5

From: Biocontrol potential of bacteriophage ɸsp1 against bacterial wilt-causing Ralstonia solanacearum in Solanaceae crops

Fig. 5

Pathogenicity of Ralstonia solanacearum strain 1629 (R1629) and phage ɸsp1 biocontrol efficacy on potato tuber slice. In vitro phage ɸsp1 bioassay on potato tuber slices against R1629 and phage-untreated tuber. Plating of reisolated R1629 from phage ɸsp1-treated R1629-infected potato tubers showing plaques on bacterial lawn. Standard plate count for R1629 from same potato tuber slices on TTC medium (figure inset). Reduction in R. solanacearum strain 1629 (R1629) following phage ɸsp1 treatment in inoculated tuber sample suspension (0.1g/ml) post 10 days of inoculation. Phage ɸsp1 + R1629 inoculated tuber slices show significantly reduced bacterial population compared to R1629 inoculated (*p ≤ 0.05). Growth measured with optical density (OD) by spectrophotometry absorbance at 620 nm (1.0 OD = 108 cells)

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