A 0.97 kb region of the Arabidopsis CHS promoter (At5g13930) was amplified by PCR from the Arabidopsis ecotype Columbia using the primers RPH-179 and RPH-180, then digested with KpnI and NcoI and cloned into the MCS of pGreenII 0800-LUC. The 1.04 kb pea CHS-1a promoter [GenBank: X80007] was subcloned into pGreenII 0800-LUC as an EcoRI-NcoI fragment [28 ]. A 0.92 kb Petunia CHS-A promoter [GenBank: X14591] was amplified by PCR using primers RPH-332 and RPH-333 from a V26 genomic DNA, digested with KpnI and NcoI and cloned into pGreenII 0800-LUC. The 1.3 kb Apple CHS1 promoter [GenBank: DQ022678] was isolated from Malus domestica Royal Gala, using the Genome Walker kit (Clonetech) with gene specific primers RPH-198 and RPH-199, then cloned into pGEM T-easy (Promega) and subcloned as a SalI-NcoI fragment into pGreenII 0800-LUC. pwo-Polymerase (Roche) was used for all PCR amplifications and cloned genes were sequenced to confirm no sequence modifications were incorporated.
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