FRD3 — Oryza sativa Indica Group

Summary

BGIOSGA005059 (OiFRD3) on chromosome 1 of Indica rice encodes a MATE family protein with citrate transmembrane transporter, metal ion transmembrane transporter, iron channel, xenobiotic transmembrane transporter and antiporter activities. The gene is associated with iron homeostasis, iron accumulation, iron translocation and iron localization, as well as pollen viability, seed germination, root growth, phosphate-dependent root growth, copper tolerance, stomatal resistance and chlorophyll content. In this species, FRDL1 has been observed in the plasma membrane, stamen, node, root, shoot, leaf and vascular bundle, and linked to fertility, reproductive growth, pollen, grain, growth and aluminum tolerance, while FRDL4 has been connected to aluminum tolerance, xylem and transcription factor. The gene product localizes to the membrane and plasmalemma, and is associated with cellular and multicellular iron ion homeostasis, detoxification, metal ion transport, response to phosphate starvation and abscisic acid, and chlorophyll fluorescence. Studies of related genes in other species link the family to metal homeostasis, iron deficiency response, zinc tolerance and aluminium tolerance.