Title : CPC, a single-repeat R3 MYB, is a negative regulator of anthocyanin biosynthesis in Arabidopsis.

Pub. Date : 2009 Jul

PMID : 19825656






9 Functional Relationships(s)
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1 CPC, a single-repeat R3 MYB, is a negative regulator of anthocyanin biosynthesis in Arabidopsis. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
2 We show here that CPC is a negative regulator of anthocyanin biosynthesis. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
3 In the process of using CPC to test GAL4-dependent driver lines, we observed a repression of anthocyanin synthesis upon GAL4-mediated CPC overexpression. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
4 In the process of using CPC to test GAL4-dependent driver lines, we observed a repression of anthocyanin synthesis upon GAL4-mediated CPC overexpression. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
5 Rather, CPC expression level tightly controls anthocyanin accumulation. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
6 Also, anthocyanin synthesis genes were shown to be down-regulated in 35S::CPC overexpression plants. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
7 Transient expression results suggest that CPC competes with the R2R3-MYB transcription factor PAP1/2, which is an activator of anthocyanin biosynthesis genes. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
8 This report adds anthocyanin biosynthesis to the set of programs that are under CPC control, indicating that this regulator is not only for developmental programs (e.g. root hairs, trichomes), but can influence anthocyanin pigment synthesis. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana
9 This report adds anthocyanin biosynthesis to the set of programs that are under CPC control, indicating that this regulator is not only for developmental programs (e.g. root hairs, trichomes), but can influence anthocyanin pigment synthesis. Anthocyanins Homeodomain-like superfamily protein Arabidopsis thaliana