AFB1 — Triticum turgidum subsp. durum

Summary

TRITD4BV1G175480 (TtAFB1) on durum wheat chromosome 4B encodes a protein with auxin receptor activity, NEDD8 transferase activity, and multiple transporter activities including auxin influx and efflux. The gene is associated with leaf rust resistance in durum wheat and with aflatoxin biosynthesis, SCF complex assembly, regulation of defense response by callose deposition, and responses to nitrate, cyclopentenone, and oomycete molecules. It localizes to the nuclear SCF complex and ubiquitin ligase complex. TtAFB1 is associated with auxin signaling pathways, ubiquitination and degradation of AUX/IAA proteins, and regulation of seed size, reproductive development, and growth processes. Associations include seedling cotyledon size, root architecture, phototropism, herbicide sensitivity, seed yield, biomass, and responses to temperature, aluminum, and light quality. Related genes in other species connect this gene group to auxin perception, lateral root development, and defense responses.