Agriculture Reference
In-Depth Information
Calvin cycle trioses are also converted into hexoses. Glucose
phosphate subsequently polymerises into starch in association
with ADPG Pase (Fig. 35).
SUCROSE
UDP (Sucrose synthase)
Fructose + UDP - Glucose (UDPG Pase)
+UDP
+UTP (Hexokinase)
Glc-1-P
(G-6 P isomerase)
Glc-6-P
PGM
(Mutase)
Fr-1, 6-P
ATP ADP
Fr-1, 6-P
PEP GA-1, 3-P + DHAP
(Calvincycle)
PEP GA-1,3-P + DHAP
Free-1, 6-BP
Free-6-P
Pi
(pyrophosphatase)
G1C-1-P GK-6-P
ADP-Glc
(ADPG pyrophosphorylase)
ADP-Glc
(Granule bound starch
synthase)
Amylose
SBE (Starch branching
enzyme)
(Isoamylase)
(Starch synthase)
Amylopectic
Oligosaccharides
Glucose
Glc-1-P
Fig. 35
Starch synthesis pathway in developing rice grain.
