GPT — Solanum tuberosum

Summary

PGSC0003DMG400005269, the potato GPT gene on chromosome 5, encodes a glucose-6-phosphate/phosphate translocator belonging to the triose-phosphate transporter family. The product is a transmembrane antiporter with glucose-6-phosphate, triose-phosphate, phosphoglycerate, and phosphoenolpyruvate transporter activities, localised to the chloroplast membrane and plastid. This gene is associated with glucose-6-phosphate transport, carbohydrate transport, starch biosynthesis, regulation of starch metabolism, sucrose breakdown, ascorbate biosynthesis, and oxidative phosphorylation. It has been connected to amylose content, starch yield, starch content, glucose content, sugar content, and photosynthetic rate. Associations also include response to biotic stimulus, plant growth and development, and gametophyte development. Studies of related genes in other species link the family to phosphorus deficiency tolerance, anthocyanin accumulation, and carbohydrate partitioning.