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  • Title: Direct interaction between VRN1 protein and the promoter region of the wheat FT gene.
    Author: Tanaka C, Itoh T, Iwasaki Y, Mizuno N, Nasuda S, Murai K.
    Journal: Genes Genet Syst; 2018 Jul 13; 93(1):25-29. PubMed ID: 29343669.
    Abstract:
    The wheat florigen gene Wheat FLOWERING LOCUS T (WFT, which is identical to VRN3) is an integrator of the vernalization, photoperiod and autonomous pathways in wheat flowering. Many studies have indicated that VERNALIZATION 1 (VRN1) directly or indirectly up-regulates WFT expression in leaves. VRN1 encodes an APETALA1/FRUITFULL-like MADS box transcription factor that is up-regulated by vernalization and aging, leading to promotion of flowering. In this study, the VRN1 protein was expressed as a His-Tag fusion protein in Escherichia coli and used in an electrophoretic mobility shift assay (EMSA). The results from the EMSA indicated that the VRN1 protein directly binds to the CArG-box in the promoter region of WFT, suggesting the direct up-regulation of WFT by VRN1 in the leaves of wheat plants.
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