PIP1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0537860 (symbol PIP1, HvPIP1) on barley chromosome 5H encodes an aquaporin-like protein with water channel activity, belonging to the major intrinsic protein (MIP) family. It is associated with water transport, leaf development, defense response, and the regulation of phosphorylation. The gene is linked to protein heterotetramerization and homotetramerization, as well as syngamy, NO storage, and homeostasis. Its product localizes to the membrane, plasmalemma, and macromolecular complexes. Associations with agronomic traits include leaf water potential, shoot fresh weight, transpiration rate, and stomatal resistance. Related genes in other species, such as maize and rice, further connect the family to water and solute transport.