Abstract
We report the new method for the screening of genetically modified potato by competitive duplex-PCR using the potato specific single oligomer primer for the internal control and CaMV 35S promoter or NOS terminator specific primers. The single oligomer primer (rAGU4A) amplify the potato specific internal control band from the homozygous potato genomic DNA in the RAPD profiles of all analyzed potato varieties. The 530 bp internal control DNA was amplified independently to CaMV 35S promoter or NOS terminator DNA and identified as repetitive or microsatellite DNA of potato (AF541972). With this new technique, the transgenic potatoes which were transformed with vectors contained the different foreign genes are analyzed. In case of the commercialized transgenic potato varieties, `Hew Leafs`, those two genetic factors are used for promoter and terminator respectively So, this new PCR technique should be a promising method of cost effective and accurate screening for the commercialized GM potatoes on market.
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