AFB1 — Zea mays

Summary

ZmAFB1 (ZM00001EB006610) on maize chromosome 1 encodes a protein with F-box and leucine-rich repeat domains, and is annotated with auxin receptor activity, NEDD8 transferase activity, and multiple transporter activities including auxin influx and efflux. It is associated with aflatoxin biosynthesis, spore germination, SCF complex assembly, and cellular responses to nitrate and cyclopentenone. The gene is linked to numerous agronomic traits including seed yield, biomass yield, vegetative growth time, herbicide sensitivity, aluminum response, phototropism, root hair length, adventitious root number, leaf margin serration, and floral organ number. Phenotypic associations include rootless seedlings, reduced fertility, embryo defects, altered auxin sensitivity, and effects on rosette size and inflorescence branching. Related genes in other species connect this gene family to auxin perception, lateral root development, and defense responses.