AFB1 — Triticum turgidum subsp. durum

Summary

TRITD4AV1G001260 (AFB1) on durum wheat chromosome 4A encodes a protein with auxin receptor activity, NEDD8 transferase activity, and auxin binding, featuring leucine-rich repeat domains. It is associated with leaf rust resistance in this species and linked to numerous biological processes including SCF complex assembly, regulation of defense response by callose deposition, response to nitrate, and regulation of lateral root development. The protein localizes to the nuclear SCF complex and ubiquitin ligase complex. Associations extend to traits such as seedling cotyledon size, seed yield, biomass, herbicide sensitivity, phototropism, and root hair length. Studies of related genes in other species link the family to grain yield, grain width and length, rice leaf blast resistance, drought response, and auxin-related developmental processes including root branching and inflorescence architecture.