SUC1 — Pisum sativum

Summary

PSAT4G007200 (SUC1, PsSUC1) on garden pea chromosome 4LG4 encodes a protein with a sucrose symporter plant domain and a major facilitator superfamily domain, with annotated sucrose:proton symporter activity and sugar transmembrane transporter activity. The gene is associated with phloem sucrose loading, glucoside and maltose transport, proton transmembrane transport, and sucrose metabolism. It has been linked to grain yield, grain size, unfilled grain number, sucrose content, photosynthetic rate, drought tolerance, salt tolerance, oxidative stress response, plant stress response, root morphology, root thickness, seed growth and development, shoot apical meristem development, cell cycle, auxin sensitivity, jasmonic acid content, stomatal closure, and trichome morphology. Localisation evidence connects the product to the tonoplast, vacuole, plasmodesma, Golgi complex, pollen tube, and stress granule. Studies of related genes in other species link the family to phloem loading, carbon partitioning, grain yield, anther dehiscence, pollen tube growth, and cold acclimation.