Also called AGPS2, ADP-glucose Pyrophosphorylase small subunit 2;
SSP genes examined was significantly suppressed in KD-RISBZ1/KD-RPBF
has two different transcripts= a:in leaf, b:in endosperm; binding with APL2 and Down regulation by RISBZ1 only happens with APS2b, binding with APL1 only happens with APS2a
expression diminished during grain filling at high temperatures