AXR5 — Asparagus officinalis

Summary

A4U43_C07F31970, designated AoAXR5, encodes an AUX/IAA family protein on asparagus chromosome 7. The product possesses auxin receptor, auxin binding, transcription corepressor, and sequence-specific DNA binding activities, and is associated with nuclear SCF and ubiquitin ligase complexes. This gene is linked to diverse developmental processes including inflorescence phyllotactic patterning, sepal and petal development, longitudinal axis specification, and negative regulation of transcription. Agronomically, AoAXR5 has been connected to traits such as biomass yield, photosynthetic ability, photoperiod-sensitive flowering time, leaf angle, root phototropism, phosphorus uptake, nitrate sensitivity, water stress response, and glyphosate sensitivity. Related genes in other species link the family to auxin homeostasis, apical dominance, and hypocotyl elongation, and to plant height and shoot morphogenesis.