Construction of Two Gateway-compatible Destination Vectors for Tomato Functional Genomics under Abiotic Stress

[Objective] This research aimed at constructing two gateway-compatible plant expression vectors for functional genomics of abiotic stress in tomato.[Method] pK2GW7I was generated from the plant expression vector pK2GW7,0 by replacing the CaMV 35S promoter with abiotic-stress inducible plant promoter pRD29A,which was derived from the promoter of Arabidopsis gene RD29A.pKGW121 was generated by replacing the CaMV 35S of the plant expression vector pRD410 with the gateway recombinant cassette(attR1-cmR-ccdB-attR2)from pK2GW7,0.Constitutive and root-specific promoters were tested on pKGW121.[Result] Two gateway-compatible destination vectors,pK2GW7I and pKGW121,were successfully constructed;practicability test proved that pKGW121 was applicable for promoter analysis.[Conclusion] With the incorporation of gateway cloning technology or abiotic-stress inducible promoter,pKGW121 and pK2GW7I will be promising in large-scale investigation of tomato functional genes associated with various abiotic stresses.A high-throughput workflow for the construction of plant transformation vector was proposed and validated.