ADG1 — Triticum aestivum

Summary

TaADG1 (TRAESCS7B02G183300) on wheat chromosome 7B encodes a protein with ADP-glucose pyrophosphorylase activity (EC 2.7.7.27) and is annotated with conflicting molecular functions including red/far-red light photoreceptor activity, histidine kinase activity, and sequence-specific DNA binding. The gene is associated with starch yield, amylopectin and amylose content, grain filling, flour protein content, and polysaccharide content. It is linked to glycogen and amylopectin anabolism, carbohydrate metabolism, hormone and abscisic acid metabolism, and responses to water, light, and hydrogen peroxide signaling. The protein localizes to the amyloplast, chloroplast stroma, plastid, and the heterotetrameric ADPG pyrophosphorylase complex. Associations also include endosperm starch synthesis, fatty acid content, triacylglycerol accumulation, plant growth, and photomorphogenesis. Studies of related genes in other species link the family to photosynthetic capacity, tuber yield, seed development, and photoperiodic flowering time.