FRK1 — Solanum lycopersicum

Summary

SlFRK1 (SOLYC10G017620.3) encodes a protein with fructokinase and nucleoside kinase activities, belonging to the PfkB family of carbohydrate kinases. In tomato, SlFRK1 is associated with disease resistance and immune evasion, and has been linked to PAMP-triggered and pattern-triggered immunity. The gene is associated with diverse biological processes including fructose metabolism, sucrose transport, ethene metabolism, polyamine metabolism, and the MEP pathway. It localises to the chloroplast stroma, plasmodesma, cytosol, nucleus, and plasma membrane. SlFRK1 is associated with numerous agronomic traits such as fruit fresh weight, fruit firmness, fruit size and shape, sugar and starch content, photosynthetic rate, chlorophyll content, water use efficiency, and leaf number. Studies of related genes in other species link the FRK family to tissue development, chlorophyll biosynthesis, seed storage accumulation, and drought tolerance.