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TCP4 repressed the transactivation activity of AtWRI1. A, Schematic representation of constructs used in a transient expression assay in protoplasts. B, Coexpression of TCP4 with AtWRI1 repressed the transactivation activity of AtWRI1 on the promoters of PKP-β1 and BCCP2 in protoplasts. Results are shown as means ± se (n = 3). Asterisks indicate significant differences by one-way ANOVA (*P < 0.05 and **P < 0.01) between AtWRI1 alone and coproduction of TCP4 as indicated.
