IRO2 (TRAESCS3D02G495600) — triticum aestivum

Summary

TRAESCS3D02G495600, symbol TaIRO2 (also known as TabHLH39, TaORG2-3D, and TaBHLH100), encodes an iron-related transcription factor 2 on bread wheat chromosome 3D. The product possesses RNA polymerase II-specific DNA-binding transcription factor activity and protein dimerization activity, placing it in the bHLH DNA-binding superfamily. This gene is associated with activation of siderophore anabolism, response to iron ion starvation, and regulation of ethylene-mediated signaling. It has been connected to flag leaf width, stem rust, heat tolerance, drought tolerance, and low-temperature stress response. Related genes in other species are linked to freezing tolerance and salt tolerance. The gene is also linked to mugineic acid biosynthesis, nicotianamine synthesis, and iron uptake and transport in root vascular systems.