Fig. 7.

Model of FAC function converted by OsFD1 or OsFD2 (A) and the mechanism of FAC formation including OsFD2 (B). (A) The Hd3a–14-3-3 protein subcomplex serves as the basic component of the FAC. When OsFD1 enters the complex, the resultant FAC-OsFD1 promotes flowering. OsFD2 is the proposed component of FAC to form FAC-OsFD2 that putatively controls leaf development. In this model, the function of FAC can be converted, depending on the function of the OsFDs recruited into the FAC. (B) A part of the OsFD2 protein is localized in the cytoplasm by the interaction with 14-3-3 proteins. When Hd3a interacts with the 14-3-3–OsFD2 complex in the cytoplasm to form a FAC, the complex enters the nucleus to regulate gene expression.