Figure 8. Proposed model for the role of GsWRKY20 in the regulation of Arabidopsis flowering time.

The symbol <?> indicates an unknown factor or signaling cascade that may repress the FLC gene expression, and the symbol <??> indicates the possibility that GsWRKY20 directly regulate the expression of the floral pathway integrators FT and SOC1 and the floral meristem identity genes AP1, AP3, PI, AG and SEP3. The straight dotted lines represent directly or indirectly regulation; the solid straight lines represents directly regulation. Arrows denote the positive effects; and lines terminated with a bar denote inhibitory effect.