AFB1 — Zea mays

Summary

ZM00001EB354200 (ZmAFB1) on maize chromosome 8 encodes a protein with F-box and leucine-rich repeat domains that exhibits NEDD8 transferase, ubiquitin-like protein transferase, auxin influx/efflux transmembrane transporter, and ABC-type indole transporter activities, and is associated with auxin receptor activity and auxin binding. It is associated with auxin signalling, SCF complex assembly, seed development, root structure development, and reproductive meristem phase change. The gene is linked to numerous agronomic traits including seed yield, biomass yield, vegetative growth time, adventitious root number, root hair length, phototropism, herbicide sensitivity, temperature stress response, and floral organ number. It is also associated with aflatoxin anabolism, spore germination, and cellular responses to nitrate and cyclopentenone. Studies of related genes in other species link the family to grain size, grain weight, leaf blast disease response, and drought tolerance.