ARGONAUTE10 and ARGONAUTE1 Regulate the Termination of Floral Stem Cells through Two MicroRNAs in Arabidopsis
Figure 6
A model of AGO1 and AGO10 in floral stem cell regulation.
miR172 promotes floral stem cell termination by repressing the expression of AP2, which promotes WUS expression. Both AGO1 and AGO10 are associated with miR172 in vivo and genetic evidence supports a role of AGO10 in mediating the activities of miR172. miR165/166-mediated repression of PHB and PHV is also necessary for floral stem cell termination. AGO1 and AGO10 exert opposite effects on miR165/166. While AGO1 mediates the activities of miR165/166, AGO10 represses the expression of miR165/166. The relationship between PHB/PHV and WUS is unknown. Interactions that are potentially indirect are represented by dotted lines.