FRK1 — Solanum tuberosum

Summary

StFRK1 (PGSC0003DMG400026916) on potato chromosome 6 encodes a protein with fructokinase activity, ATP binding, and nucleoside kinase activity, belonging to the PfkB carbohydrate kinase family. The gene is associated with carbohydrate phosphorylation, fructose metabolism, sucrose breakdown and anabolism, regulation of starch metabolism, and ethanol fermentation. It has been linked to traits including IAA content, reducing sugar, glucose, sucrose, starch, and carbohydrate content, as well as photosynthetic rate, chlorophyll content, respiration rate, and shoot fresh weight. StFRK1 is also associated with PAMP-triggered immunity, pattern-triggered immunity, defence response, and plant immunity. Localisation evidence places the product in the chloroplast stroma, cytosol, nucleus, plasmodesma, and plasmalemma. Studies of related genes in other species link the family to fruit weight, flowering time, drought tolerance, disease resistance, and seed development.