PIP1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0447330 (HvPIP1) on barley chromosome 5H encodes an aquaporin-like protein with multiple molecular functions including phospholipase D activity, peptide binding and receptor activity, kinase activity, and ubiquitin ligase binding. It is associated with carbon dioxide transport, hydrogen peroxide membrane transport, phosphatidic acid metabolism, circadian regulation of gene expression, and responses to desiccation, low humidity, aluminum, and bacteria. The gene has been linked to traits including leaf water potential, stomatal opening, photosynthetic rate, root hair length, lateral root length, shoot fresh weight, germination rate, flowering time, and responses to drought, cold, cadmium, and powdery mildew. It localizes to the plasma membrane, plant-type cell wall, vacuole, chloroplast envelope, and Golgi stack. Studies of related genes in other species connect the family to water transport, drought stress tolerance, and stomatal immunity.