IRT1 — Brassica napus

Summary

BnIRT1 (DARMORV10_A03P51980.1) on chromosome A03 of oilseed rape encodes a ZIP family metal transporter with iron channel activity and transmembrane transporter activities for copper, manganese, zinc, and cadmium ions. The gene is associated with metal homeostasis, iron deficiency tolerance and response, iron and cadmium accumulation, and metal uptake. It has been linked to photosynthetic rate, chlorophyll and carotenoid content, leaf chlorosis, stomatal resistance, germination rate, and plant growth and development traits. Associations also include pollen germination, cellular response to hypoxia, response to bacteria, signal transduction, and regulation of abscisic acid signaling. The encoded protein localises to the plasmalemma, endosome, late endosome membrane, TGN, ESCRT I complex, and nucleus. Studies of related genes in other species link the family to iron uptake, transport, and translocation, as well as nickel and arsenic accumulation.