PIP1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0631700 (HvPIP1) on barley chromosome 6H encodes a plasma membrane intrinsic protein belonging to the aquaporin family, with channel activity and additional annotated functions including phospholipase D activity, peptide binding and receptor activity, and kinase activity. The gene is associated with carbon dioxide transport, hydrogen peroxide membrane transport, phosphatidic acid metabolism, and circadian regulation of gene expression. It has been linked to numerous agronomically relevant traits including drought stress response, cold stress response, photosynthetic rate, stomatal opening, leaf water potential, root hair length, lateral root length, shoot fresh weight, germination rate, flowering time, seed growth, and disease tolerance responses including to powdery mildew, downy mildew, and Fusarium graminearum. Studies of related genes in other species link the family to water transport, drought tolerance, and yield-related traits.