AFB1 — Triticum turgidum subsp. durum

Summary

TRITD2AV1G172620 (AFB1) on durum wheat chromosome 2A encodes a protein with F-box and leucine-rich repeat domains, exhibiting auxin receptor activity, NEDD8 transferase activity, and multiple transporter activities including auxin influx and efflux. The gene is associated with leaf rust resistance in this species. AFB1 is associated with auxin signalling, SCF complex assembly, regulation of lateral root development, and responses to nitrate and cyclopentenone. It localises to the nuclear SCF complex and endosomes. Associations include seedling cotyledon size, root hair length, phototropism, herbicide sensitivity, seed yield, biomass, and temperature stress response. Studies of related genes in other species link the family to auxin perception and degradation of AUX/IAA proteins, and to grain size, yield, leaf blast resistance, and drought response.