PIP1 — Oryza sativa Japonica

Summary

OsPIP1 (OS04G0559700) on rice chromosome 4 encodes an aquaporin-like protein with channel activity, phospholipase D activity, and multiple additional molecular functions including peptide binding and kinase activity. The gene is associated with carbon dioxide transport, sucrose transport, and hydrogen peroxide membrane transport. It has been linked to numerous agronomically important traits including grain moisture content, water use efficiency, drought sensitivity, root volume, lateral root length, sodium uptake, nitrogen content, cadmium concentration, bacterial disease response, and downy mildew response. Phenotypic associations include seed, root, shoot, and xylem development, as well as drought, cold, and osmotic stress responses. The protein localizes to the plasma membrane, cell wall, vacuole, chloroplast envelope, and Golgi stack. Studies of related genes in other species link the family to root hydraulic conductivity, stomatal closure, mesophyll conductance, and pathogen resistance.