AFB1 — Brassica oleracea var. botrytis

Summary

BoAFB1 (also known as GRH1) on cauliflower chromosome 9 encodes a protein with an F-box domain and leucine-rich repeats, characteristic of the COI1/AFB auxin receptor family. It is annotated with auxin receptor activity, auxin binding, NEDD8 transferase activity, and ABC-type transporter activities. The gene is associated with the nuclear SCF ubiquitin ligase complex and linked to response to cyclopentenone, regulation of defense response by callose deposition, indole glucosinolate breakdown, and cadmium transport. Associations with phototropism, auxin signaling, seedling growth, root development, floral organ number, petal size, herbicide sensitivity, and abiotic stress tolerance have been reported. Related genes in other species connect the family to auxin resistance, drought tolerance, fungal resistance, glucose signaling, and lateral root organogenesis.