title: Development of event-specific quantitation method for GA21 maize, which is a gm event without CaMV35S promoter.
abstract: A real-time PCR detection method was developed for event-specific quantitation of Roundup Ready maize, GA21. The developed PCR method was designed to amplify an artificial junction site between the native maize genome DNA and the recombinant DNA of GA21 maize, which provides only one target sequence per haploid of GA21 genome. Thus, the amplification efficiency of the event-specific target for GA21 became closely similar to the amplification of SSIIb, and the conversion factor (Cf) for the quantitation method was similar to the theoretical value. The developed method demonstrated better performance than the existing construct-specific method that has been used as a Japanese official method. The developed method can easily be combined with the real-time PCR targeting of the CaMV35S promoter, and the multiplexed method should be an effective screening method for GM maize.
authors.affiliation: National Agriculture and Food Research Organization, National Food Research Institute, Ibaraki, Japan.
authors.forename: Taichi
authors.initials: T
authors.lastname: Oguchi
authors.forename: Mari
authors.initials: M
authors.lastname: Onishi
authors.forename: Yukie
authors.initials: Y
authors.lastname: Chikagawa
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Minegishi
authors.forename: Takashi
authors.initials: T
authors.lastname: Kodama
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Akiyama
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Ohno
authors.forename: Satoshi
authors.initials: S
authors.lastname: Futo
authors.forename: Akihiro
authors.initials: A
authors.lastname: Hino
authors.forename: Satoshi
authors.initials: S
authors.lastname: Furui
authors.forename: Kazumi
authors.initials: K
authors.lastname: Kitta
mesh_terms: D001483:Base Sequence; D004274:DNA, Recombinant / Q000302:isolation & purification; D021141:Nucleic Acid Amplification Techniques; D030821:Plants, Genetically Modified / Q000235:genetics*; D016133:Polymerase Chain Reaction; D003313:Zea mays / Q000235:genetics*
chemical_list: D004274:DNA, Recombinant