AXR5 — Cucumis sativus

Summary

CsAXR5 (CSA_7G447060) on cucumber chromosome 7 encodes an AUX/IAA family protein with auxin receptor activity, auxin binding, transcription corepressor activity, and sequence-specific DNA binding. It is associated with auxin signalling, the TIR1-IAA-AUX/IAA interaction pathway, and ubiquitination and degradation of AUX/IAA proteins. The gene is linked to sex determination, inflorescence phyllotactic patterning, response to gravity, and regulation of anthocyanin anabolism. It has been connected to numerous agronomic traits including biomass yield, photosynthetic ability, fruit growth and development, seed size, root system development, photoperiod-sensitive flowering time, and responses to water stress, nitrate, and glyphosate. Localisation evidence places the product in the nucleus, cytosol, plasma membrane, and SCF ubiquitin ligase complex. Related genes in other species link the family to auxin resistance, lateral root initiation, and shoot regeneration.