PHL1 — Zea mays

Summary

ZmPHL1 (also known as ZmPHR1, ZmPHR2, or PHL4) on maize chromosome 1 encodes a DNA-binding transcription factor with transcription coactivator activity, SUMO transferase activity, and SUMO binding, localizing to the nucleus, cytoplasm, and plasmalemma. It is associated with positive regulation of cellular response to phosphate starvation, regulation of phosphate transport, sulfate homeostasis, regulation of nitrate assimilation, carotenoid breakdown, and response to arsenite ion. The gene is linked to phosphorus response, seed protein content, seed set percent, root volume, lateral root number, plant male sterility, trichome morphology trait, chloroplast development trait, and high temperature stress response. Related genes in other species link the family to phosphate homeostasis, photosynthesis efficiency, and UV-damaged DNA repair, as well as yield, root architecture, and phosphorus remobilization.