AXR6 — Brachypodium distachyon

Summary

BdAXR6 (BRADI_1G06387V3) on chromosome 1 of Brachypodium distachyon encodes a cullin family protein with a cullin neddylation domain, acting as a ubiquitin ligase complex scaffold and possessing auxin receptor, NEDD8 transferase, and protein-binding activities. The gene is associated with regulation of ethylene biosynthesis, protein neddylation, post-embryonic root development, gibberellic acid signalling, and responses to potassium and organophosphorus compounds. It localises to CRL, CSN, and nucleotide-excision repair complexes. Associations include responses to bacterial blight, Cercospora leaf spot, rice sheath blight, wheat common root rot, and downy mildew, as well as seed shattering, fruit ripening, photoperiod sensitivity, iron and molybdenum content, and branch angle. Studies of related genes in other species link the cullin family to grain morphology, tiller number, grain yield, biomass, and resistance to rice yellow mottle virus and Fusarium head blight.