AFB1 — Triticum aestivum

Summary

TaAFB1 (TRAESCS7D02G177500) on wheat chromosome 7D encodes a protein with auxin receptor activity, auxin binding, and IP6 binding, belonging to the COI1_F-box and leucine-rich repeat domain families. The gene is associated with leaf rust resistance in wheat and has been linked to numerous agronomic traits including grain number, grain size, grain weight, grain yield, plant height, tiller number, spike length, panicle length, and inflorescence branching. It is associated with biological processes such as defense response to insects, regulation of jasmonic acid mediated signaling, anthocyanin accumulation in response to UV light, meristem initiation and size regulation, flower morphogenesis, pollen exine formation and maturation, and sporopollenin biosynthesis. The encoded protein localizes to the nucleus and SCF complex. Studies of related genes in other species link the family to rice leaf blast disease response and spikelet number.