ADG1 — Triticum aestivum

Summary

TRAESCS7A02G287400 (symbol ADG1, also known as TaAGPS1-7A) on wheat chromosome 7A encodes the small subunit of ADP-glucose pyrophosphorylase (AGPase, EC 2.7.7.27), a key enzyme in starch biosynthesis. The gene is associated with starch yield, amylopectin and amylose content, grain filling, flour protein content, and polysaccharide content. It has been linked to endosperm starch synthesis, starch grain synthesis, and photosynthetic ability. The encoded protein localises to the amyloplast, chloroplast stroma, and the heterotetrameric ADPG pyrophosphorylase complex. ADG1 is also associated with responses to red and far-red light, photoperiodic flowering, abscisic acid metabolism, circadian regulation, and stomatal development. Studies of related genes in other species link the family to photosynthetic capacity, tuber yield, phototropic response, seed dormancy, and biomass production.