SUC3 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0632370 (HvSUC3) on barley chromosome 6H encodes a protein with sucrose:proton symporter activity, also annotated for maltose, salicin and arbutin transmembrane transport. The protein localises to the tonoplast, vacuole, plasma membrane, Golgi, cis-Golgi network, pollen tube, cytoplasm and nucleus. HvSUC3 is associated with phloem sucrose loading, sucrose and maltose transport, sucrose metabolism, pollen germination, response to wounding, and NO storage. It is linked to grain yield, unfilled grain number, seed growth and development, plant growth and development, root thickness and morphology, photosynthetic rate, stomatal closure, drought tolerance, salt tolerance, sucrose content, and phenolic compound content. Studies of related genes in other species connect the family to pod dehiscence, wound response, root growth, and grain yield, as well as vacuolar sucrose transport, tonoplast targeting, and salt tolerance.