APL2 — Solanum tuberosum

Summary

StAPL2 (PGSC0003DMG400000735) on potato chromosome 1 encodes an ADP-glucose pyrophosphorylase (glucose-1-phosphate adenylyltransferase, EC 2.7.7.27) with ADGase and ATP-binding activities. The gene is associated with starch anabolism and breakdown, glycogen anabolism, and regulation of flavonoid and anthocyanin anabolism. It is linked to amyloplast localisation and the glucose-1-phosphate adenylyltransferase complex. Associations include traits such as reducing sugar, sucrose, and anthocyanin content, as well as photosynthetic rate. The gene is connected to phenotypes including starch accumulation, carbon partitioning, root elongation, and stress response. Related genes in other species link the family to starch concentration, amylose content, and seed weight.