AFB1 — Triticum turgidum subsp. durum

Summary

TRITD6BV1G184960 (AFB1) on durum wheat chromosome 6B encodes a protein with auxin receptor activity, NEDD8 transferase activity, and auxin binding, and belongs to the leucine-rich repeat family. In durum wheat, AFB1 is associated with leaf rust resistance. The gene is linked to auxin signalling, ubiquitination and degradation of AUX/IAA proteins, regulation of seed size, and reproductive structure development. It is associated with numerous traits including seedling cotyledon size, molybdenum content, light quality response, adventitious root number, peduncle length, floral organ number, phototropism, herbicide sensitivity, seed yield, biomass yield, and vegetative growth time. AFB1 localises to the nuclear SCF complex and is associated with SCF complex assembly, regulation of lateral root development, and response to cyclopentenone. Studies of related genes in other species link the family to auxin resistance, root development, and inflorescence architecture.