PIP1 — Zea mays

Summary

ZmPIP1 (ZM00001EB077130) on maize chromosome 2 encodes an aquaporin PIP2-5 family protein with channel activity, phospholipase D activity, and additional molecular functions including peptide binding, kinase activity, and ubiquitin ligase binding. The gene is associated with C4 photosynthesis, carbon dioxide transport, vascular transport, hydrogen peroxide membrane transport, and regulation of hormone metabolism. It localizes to the plasma membrane, chloroplast envelope, plant-type cell wall, vacuole, and Golgi stack. ZmPIP1 is associated with drought stress response, cold stress response, leaf water potential, root moisture content, aluminum tolerance, salt response, bacterial and downy mildew disease responses, leaf elongation rate, turgor pressure, quantum yield, and phosphorus and nitrate uptake. Studies of related genes in other species link the family to root water uptake, stomatal closure, hydrogen peroxide transport, and drought stress responses.