Model Illustrating the Conserved Role of MIF2 in the Regulation of FM Termination.
(A) The expression of MIF2 and KNU is activated by AG directly (green arrows) or indirectly (dashed arrow) in floral buds at stage 3.
(B) MIF2 and KNU associate with HDA19 and TPL to form a chromatin remodeling complex that binds to the first intron of the WUS locus, enabling the complete repression of WUS (red arrows) and leading consequently to the termination of stem cell activity at stage 6. se, sepal; pe, petal; st, stamen; ca, carpel.