PFK — Solanum tuberosum

Summary

StPFK (PGSC0003DMG400027554) on potato chromosome 4 encodes a phosphofructokinase with 6-phosphofructokinase and diphosphate-fructose-6-phosphate 1-phosphotransferase activities, belonging to the PFKA and ATP_PFK domain families. It is associated with glycolytic and carbohydrate metabolism, including fructose 6-phosphate, sucrose, and starch anabolism, as well as cellular responses to hypoxia and glucose. The gene product localises to the cytosol, cytoplasm, and plasmalemma, and is linked to root epidermal cell differentiation and sugar homeostasis. Studies of related genes in other species connect the PFK family to hexose content, fruit colour, leaf size, photochemical quenching, root morphology, and reduced root length with diminished PFK activity, though these associations are not yet established in potato.