Figure 7. Working model of hexose signaling network during A. thaliana early seedling development.
HXK1/GIN2-dependent glucose signaling acts upstream of GIN1/ABA2, while FINS1/FBP functions downstream of GIN1/ABA2. Glucose signaling may also integrate into GIN1/ABA2 directly. Only a minor portion of fructose signaling may occur via GIN2/HXK1. Both hexose signals positively and negatively modulate ABA and ethylene responses, respectively.
