Purpose: To detect the exogenous gene copy number of the transgenic tomato anti-caries vaccine by using the SYBR Green real-time PCR.
Methods: Recombinant plasmid pEAC10 and pEPC10 were used as standard to detect genome samples of exogenous gene pacA-ctxB and pacP-ctxB by SYBR green fluorescent quantitation, then the average value was calculated as gene copy number.
Results: The copy number of the transgenic tomato carrying pacA-ctxB was 1.3 and the pacP-ctxB was 3.2.
Conclusions: The transgenic tomato plants which have high stability are low-copy transgenic plants. Supported by National Natural Science Foundation of China (30160086, 81260164), Science and Technical Fund of Guizhou Province (LKZ[2011]41), Project of Technology Innovation Team in Guizhou Province, Leading Academic Discipline Construction Project in Guizhou Province and Excellent Scientific Research Team Cultivation Project in Zunyi Medical College ([2012]12).