AFB1 — Oryza sativa Japonica

Summary

OsAFB1 (Os02g0759700) on rice chromosome 2 encodes a protein with auxin receptor activity, NEDD8 transferase activity, and auxin influx/efflux transmembrane transporter activity, belonging to the COI1_F-box and leucine-rich repeat domain families. It is associated with auxin, defense, drought, salt, and phosphate responses, as well as tillering, growth, development, and resistance phenotypes. The gene has been associated with regulation of defense response by callose deposition, cellular response to nitrate, phosphate homeostasis, and SCF complex assembly, localizing to the nuclear SCF complex and ubiquitin ligase complex. Associations extend to traits including seedling cotyledon size, adventitious root number, floral organ number, seed yield, biomass yield, root hair length, and phototropism response. Related genes in other species link the family to auxin sensitivity, lateral root formation, and inflorescence development.