MTN3 — Brassica oleracea

Summary

BoMTN3, a gene on cabbage chromosome 7, encodes a SWEET family protein with sucrose permease and sugar transmembrane transporter activity. It is associated with carbohydrate and sucrose transport, protein homooligomerization, and membrane localization, including the plasmalemma and extracellular regions. The gene is associated with seed maturation, anther dehiscence, pollen and flower development, and embryo development ending in seed dormancy. Associations with stem elongation, sugar transport and accumulation, carbon allocation, nitrogen remobilization and use efficiency, root growth under salt stress, disease resistance and susceptibility, salicylic acid-mediated defense, assimilate translocation, phloem sucrose unloading, seed development, and vascular cell wall composition have been reported. Studies of related genes in other species link the family to phloem loading, seed filling, carbon export to roots, and reduced embryo size.