INV1 — Solanum lycopersicum

Summary

SOLYC03G083910.5 (INV1/TIV1) on tomato chromosome 3 encodes a beta-fructofuranosidase (invertase) with beta-fructofuranosidase and 6G-fructosyltransferase activities, belonging to the Glyco_hydro_32 family. The protein localizes to the vacuolar lumen and membrane. INV1 is associated with sucrose breakdown and transport, fructose metabolism, phloem unloading, vacuolar localization, and fructan and lycopene anabolism. It has been linked to numerous agronomic traits including fruit fresh weight, fruit firmness, fruit color and size, seed size and maturation, flower and petal color, inflorescence number, flower abortion, leaf size, leaf chlorosis, leaf water potential, turgor pressure, water use efficiency, net photosynthetic rate, stomatal resistance, chlorophyll and anthocyanin content, carbohydrate, sugar, sucrose, auxin and protein content, and respiration rate. Studies of related genes in other species connect the family to cold-induced sweetening, chip color, and tuber starch content.