PAP1 — Arabidopsis thaliana

Summary

AT3G16500 (PAP1, also known as IAA26) encodes an AUX/IAA family protein with auxin receptor activity, auxin binding, and DNA-binding transcription factor activity, and is associated with the nuclear SCF complex. In Arabidopsis, PAP1 is linked to herbivore resistance, phenylpropanoid pathway activation, and phosphate starvation response, as well as anthocyanin breakdown, flavonoid metabolism, and proanthocyanidin anabolism. It is associated with diverse traits including yield, stomatal processes, carpel number, water stress response, adventitious root number, leaf morphology, phototropism, and senescence. The gene is also associated with auxin signalling, strigolactone signalling, and root structure development pathways. Studies of related genes in other species link the family to rootless, leaf width, abscisic acid content, and plant height traits, as well as phenylpropanoid biosynthesis and virus resistance.