INV1 — Solanum tuberosum

Summary

PGSC0003DMG401028252, designated INV1 or StINV1 on potato chromosome 10, encodes a protein with glycoside hydrolase family 32 domains and beta-fructofuranosidase and sucrose alpha-glucosidase activities. The gene is associated with cold-induced sweetening, and with hexose content, starch concentration, tiller number, reducing sugar content, starch yield, leaf water potential, glucose content, respiration rate, sucrose content, starch content, water use efficiency, sugar content, photosynthetic rate, stomatal resistance, stomatal opening, and chlorophyll content. It is also associated with phloem unloading, carbohydrate storage, sucrose breakdown and anabolism, nectar secretion, vacuolar localization, organ growth, and reduced cell wall invertase activity with no nectar secretion. Related genes in other species link the family to male sterility, seed development, and nectar production.