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. 2018 Apr 3;8:5513. doi: 10.1038/s41598-018-23807-3

Figure 3.

Figure 3

Assay of prochloraz resistance and related biological effects of P. digitatum strains derived from HS-RH2 including wild-type strain with PdPmV1 and PdNLV1 coinfection (HS-RH2), virus-cured strain (HS-RH2F) and virus-reinfected strain (HS-RH2FI). (A) Growth assay of P. digitatum HS-RH2, HS-RH2F and HS-RH2FI strains on PDA plates with or without prochloraz (concentrations: 0, 0.01 and 0.05 mg·L−1). All the strains were cultured at 25 °C for four days to calculate prochloraz EC50 values. (B) Comparison of prochloraz EC50 values of P. digitatum HS-RH2, HS-RH2F and HS-RH2FI strains. Each bar represents the EC50 value plus standard error of three measurements (**P < 0.01). (C) Virulence for P. digitatum HS-RH2, HS-RH2F and HS-RH2FI on the prochloraz-treated citrus peel (prochloraz concentrations: 0, 0.01 and 0.05 mg·L−1). The inoculated citrus fruits were incubated for a week at 25 °C. (D) Bars representing the mean lesion diameter of the virulence assay plus standard errors of three cultures are shown in panel C (*P < 0.05; **P < 0.01).