The TaqMan analysis was performed as previously reported [24], using a relative quantification analysis to get the copy number of transgenic plants against a standard curve. Fam was used as the reporter of target genes and TET as the reporter of internal control and TAMRA was used as the quencher for either the target genes or the internal control [24]. qRT-PCR operation follows the instruction of Promega Access RT-PCR System with following designs to analyse nhaA events: