PIP1 — Oryza sativa Japonica

Summary

OsPIP1 (OS02G0629200) on rice chromosome 2 encodes an aquaporin family protein with channel activity, phospholipase D activity, peptide receptor activity, and protein kinase activity. It is associated with carbon dioxide and sucrose transport, hydrogen peroxide membrane transport, pore formation, circadian regulation of gene expression, and response to water. The gene has been linked to numerous agronomic traits including grain moisture content, drought sensitivity, water use efficiency, root volume, lateral root length, germination rate, days to heading, nitrogen content, cadmium concentration, and bacterial disease response. It localizes to the plasma membrane, cell wall, vacuole, chloroplast envelope, and Golgi. Studies of related genes in other species connect the family to root hydraulic conductivity, stomatal closure, mesophyll conductance, and pathogen resistance.