Fig. 4

(A) Standard curve of real-time PCR Ct values of periwinkle ubiquitin gene. (B) Standard curve of real-time PCR Ct values of PLY phytoplasma SecY  gene. (C) The mean number of phytoplasma genome copies was measured in the apical leaves at the S3 stage (flowers that have completed virescence or plants showing shoot proliferation symptoms). Each group was determined from at least 6 biological replications. The error bar indicates the SE of each set of replicates