PIP1 — Zea mays

Summary

ZmPIP1 (ZM00001EB249940) on maize chromosome 5 encodes an aquaporin PIP1-2 protein with channel activity and phospholipase D activity, among other molecular functions including peptide binding, kinase activity, and heme binding. This gene is associated with carbon dioxide transport, C4 photosynthesis, stomatal opening, hydrogen peroxide membrane transport, and nitrate import. It is linked to root moisture content, leaf water potential, water use efficiency, drought stress response, aluminum tolerance, salt response, bacterial and downy mildew disease responses, phosphorus response, cadmium concentration, and oleic acid content. Localization evidence connects ZmPIP1 to the plasma membrane, plant-type cell wall, chloroplast envelope, and plant-type vacuole. Studies of related genes in other species link this gene family to water transport, drought tolerance, stomatal closure, hydrogen peroxide diffusion, and arsenic tolerance.