PIP1 — Zea mays

Summary

ZmPIP1 (ZM00001EB223910) on maize chromosome 5 encodes a protein with aquaporin-like and major intrinsic protein (MIP) domains, and is annotated with diverse molecular functions including phospholipase D activity, peptide binding, kinase activity, and heme binding. The gene is associated with carbon dioxide transport, C4 photosynthesis, stomatal opening, circadian regulation of gene expression, and hydrogen peroxide membrane transport. It localizes to the plasma membrane, chloroplast envelope, plant-type cell wall, and vacuole. ZmPIP1 is linked to agronomically important traits including drought stress response, water use efficiency, root moisture content, leaf water potential, aluminum tolerance, salt response, nitrate uptake, and bacterial and downy mildew disease responses. Studies of related genes in other species connect the family to root water uptake, stomatal closure, and drought tolerance.