Sh2 — Sorghum bicolor

Summary

SORBI_3003G230500 (Sh2) encodes the large subunit of ADP-glucose pyrophosphorylase (AGPase; EC 2.7.7.27), an enzyme with ADGase activity that binds ATP. This sorghum gene on chromosome 3 is associated with starch and sucrose metabolism, glycogen anabolism, and primary metabolism, and localizes to the amyloplast, cytosol, and the glucose-1-phosphate adenylyltransferase complex. Observed associations include thousand grain weight, stem dry weight, amylose content, grain filling period, seed size, grain weight, photosynthetic rate, and protein content. The gene is linked to seed development, root gravitropism, and responses to abiotic stimuli. Studies of related genes in other species connect the family to endosperm starch synthesis, kernel wrinkling, heat tolerance, grain filling, and yield traits including thousand kernel weight and seed number per spike.