PIP1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.4HG0414600 (HvPIP1) on barley chromosome 4H encodes a protein with MIP and aquaporin-like domains. The gene product is associated with phospholipase D activity, peptide binding and receptor activity, and kinase activity. HvPIP1 is linked to carbon dioxide transport, hydrogen peroxide membrane transport, phosphatidic acid metabolism, and circadian regulation of gene expression. It localizes to the plasma membrane, plant-type cell wall, vacuole, and chloroplast envelope. The gene is associated with drought stress tolerance, cold stress response, photosynthetic rate, stomatal resistance and opening, root hair length, shoot fresh weight, seed germination, flowering time, and disease responses to powdery mildew, downy mildew, and Fusarium. Studies of related genes in other species link the family to water transport, root water uptake, and transpiration rate.