Fig. 3
From: Potato: from functional genomics to genetic improvement
A diagram of the regulatory mechanism of potato flowering. Photoperiod, sucrose, microRNA, and isoprenoids play crucial roles in the regulation of potato flowering. StSP3D interacts with transcription factor StABL1, bridged by St14-3-3Â s to form a flowering activation complex (aFAC) that promotes flowering. Under long day (LD) condition, StCO inhibits StSP3D expression, reducing the formation of aFAC and thereby inhibiting flowering. Conversely, under short day (SD) condition, StCO promotes the expression of StSP3D, which, in turn, promotes flowering. StSUT1, StSUT2, and StSUT4, sugar transporters