SUC1 — Phaseolus vulgaris

Summary

PHAVU_004G085400, designated PvSUC1 on chromosome 4 of French bean (Phaseolus vulgaris), encodes a protein belonging to the MFS transporter superfamily and the sucrose symporter (Suc_symporter_pln) family. The gene product is associated with sucrose:proton symporter activity, maltose:proton symporter activity, and transmembrane transport of glucosides, maltose, and sucrose. PvSUC1 is linked to phloem sucrose loading, proton transmembrane transport, and sucrose metabolism. It is associated with grain yield, grain size, unfilled grain number, sucrose content, photosynthetic rate, drought tolerance, pollen fertility, and root morphology. The gene is also associated with responses to nematodes, oxidative stress, and abiotic stress, as well as cell cycle regulation, embryo development, and shoot apical meristem development. Localisation evidence links the product to the tonoplast, plasmodesmata, Golgi complex, and pollen tube.