PIP — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.1HG0077680, designated HvPIP (also known as HvPAP1), encodes a proline iminopeptidase belonging to the peptidase S33 and AB hydrolase families, with confirmed aminopeptidase activity (EC 3.4.11.5). In barley, this gene is associated with proteolysis, regulation of phosphorylation, water transport, systemic acquired resistance, and responses to salt, metal, and thirst. The encoded protein localises to the cytosol, cytoplasm, mitochondria, and secretory vesicles. Studies of related genes in other species link the HvPIP family to drought tolerance, salt response, grain yield, and water-use efficiency, as well as root hydraulic conductance, root moisture content, leaf elongation rate, leaf water potential, turgor pressure, transpiration rate, stomatal resistance, and root morphology traits.