SLR — Beta vulgaris subsp. vulgaris

Summary

BvSLR (BVRB_5G120320) on sugar beet chromosome 5 encodes an AUX/IAA family protein with auxin receptor activity, auxin binding, DNA-binding transcription factor activity, and ubiquitin-protein transferase activity. It is associated with diverse developmental processes including meristem initiation and development, inflorescence phyllotactic patterning, lateral root morphogenesis, primary root development, embryonic pattern specification, and positive regulation of leaf senescence. The gene is linked to numerous traits such as root hair density, adventitious root number, leaf number, phyllotaxy, phototropism response, peduncle length, floral organ number, petal size, fruit senescing quality, metabolite content, respiration rate, and gibberellic acid sensitivity. Localization evidence places the product in the nucleus, SCF complex, plasmodesmata, mitochondria, and plant-type vacuole. Studies of related genes in other species connect the AUX/IAA family to lateral root development, auxin resistance, stress response, and vascular tissue development.