PIP1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.2HG0105020 (HvPIP1) on barley chromosome 2H encodes an aquaporin-like protein with channel activity and phospholipase D activity. It is associated with carbon dioxide transport, hydrogen peroxide membrane transport, and phosphatidic acid metabolism, as well as responses to desiccation, low humidity, aluminum, and bacteria. The gene is 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 disease tolerance. It has been connected to drought stress response, cold stress response, osmotic stress sensitivity, and pathogen resistance. Studies of related genes in other species link the aquaporin family to water transport, stomatal closure, hydrogen peroxide diffusion, and drought stress tolerance.