INV1 — Solanum tuberosum

Summary

StINV1 (INV1) on potato chromosome 10 encodes a beta-fructofuranosidase with sucrose alpha-glucosidase and O-glucosyl hydrolase activities. The gene is directly associated with cold-induced sweetening in potato. Annotated associations link StINV1 to phloem unloading, carbohydrate storage, vacuolar localization, apoplast and plant-type cell wall localization, and pollen tube localization. The gene is associated with traits including hexose, reducing sugar, sucrose, glucose, and starch content, as well as starch yield, photosynthetic rate, water use efficiency, stomatal resistance, and chlorophyll content. Studies of related genes in other species link the family to male sterility, seed development, and nectar production.