FT1 — Asparagus officinalis

Summary

A4U43_C01F16410 (FT1, also known as AoINV1) on asparagus chromosome 1 encodes a protein with 1,2-beta-fructan 1F-fructosyltransferase, sucrose 1F-fructosyltransferase, 6G-fructosyltransferase and beta-fructofuranosidase activities, placing it in the Glyco_hydro_32 family of fructan-metabolising enzymes. The gene is associated with fructan anabolism and levan catabolism, sucrose and carbohydrate metabolism, regeneration, and NO storage, and its product localises to the vacuolar lumen and membrane. It has been linked to photosynthetic rate, respiration rate, chip quality and reducing sugar accumulation. Studies of related genes in other species link the family to traits including tuber starch content, cold-induced sweetening, chip color, fruit weight, hexose content, and water use efficiency.