AFB1 — Zea mays

Summary

ZM00001EB401510 (ZmAFB1) on maize chromosome 9 encodes a protein with auxin receptor activity, auxin binding, NEDD8 transferase activity, and multiple transporter activities including auxin influx and efflux transmembrane transporter activity. The protein contains F-box and leucine-rich repeat domains and localises to the SCF ubiquitin ligase complex. ZmAFB1 is associated with diverse biological processes including aflatoxin anabolism, spore germination, response to cyclopentenone, cellular response to nitrate, and SCF complex assembly. The gene has been linked to numerous agronomic traits including seed yield, biomass yield, vegetative growth time, herbicide sensitivity, phototropism, root and shoot architecture, floral organ number, and temperature stress response. Studies of related genes in other species connect the family to auxin signalling, lateral root formation, and inflorescence development, as well as to drought response, salt tolerance, and tillering.