IAA5 — Cucumis sativus

Summary

CsIAA1 (CSA_3G516530, also known as IAA5, IAA19, SHY1, MSG2, and AUX22) on cucumber chromosome 3 encodes an AUX/IAA family protein with auxin receptor activity, auxin binding, transcription corepressor activity, and DNA-binding transcription factor activity. It is associated with positive regulation of auxin-mediated signaling, response to gravity, meristem development, inflorescence phyllotactic patterning, and vegetative phase change. The gene is linked to numerous agronomic traits including yield, fruit length, lateral root number, adventitious root number, water stress response, nitrate sensitivity, and biotic stress tolerance. It localizes to the nucleus, cytoplasm, and SCF ubiquitin ligase complexes. Studies of related genes in other species connect the AUX/IAA family to lateral root development, adventitious root formation, drought tolerance, salt tolerance, and fruit development.