AXR2 — Brassica napus

Summary

BnAXR2 (IAA7) on chromosome C05 of oilseed rape encodes an AUX/IAA family protein with auxin receptor activity, auxin binding, IP6 binding, and DNA-binding transcription factor activity. It is associated with primary root development, geotropism, stamen and floral organ development, leaf vascular tissue pattern formation, phloem transport, and circadian rhythm regulation. The gene is linked to seminal root length, root weight, adventitious root number, lateral root length, petal size, floral organ number, stamen morphology, peduncle length, stem elongation, vegetative growth time, heterosis, herbicide sensitivity, auxin sensitivity, and metabolite content. It localises to the nuclear SCF complex, ubiquitin ligase complex, spindle, plasmodesma, and plant-type vacuole. Studies of related genes in other species connect the family to auxin resistance, lateral root formation, inflorescence branching, and disease resistance.