GTR1 — Brassica juncea

Summary

BjGTR1 (BJUA06G19050S) on chromosome A06 of Indian mustard encodes a member of the peptide transporter (POT) family within the major facilitator superfamily (MFS). The gene product has glucosinolate:proton symporter activity and is associated with phloem glucosinolate loading, glucosinolate anabolism, and defense response. It localises to multiple cellular compartments including the plasma membrane, Golgi complex, plasmodesma, cytosol, and nucleus. BjGTR1 is linked to glucosinolate distribution and accumulation, particularly in seeds, as well as to fertility, anther dehiscence, stamen development and filament elongation, lateral root development, aphid resistance, wound response, and transport of gibberellic acid and jasmonoyl-L-isoleucine. Related genes in other species connect the family to glucosinolate transport and long-distance movement of aliphatic glucosinolates.