PIP1 — Brachypodium distachyon

Summary

BdPIP1 (BRADI_1G28780V3) on chromosome 1 of Brachypodium distachyon encodes an aquaporin with water channel activity, belonging to the major intrinsic protein (MIP) family. The gene is associated with membrane and plasmalemma localisation, as well as macromolecular complex formation. Annotated biological processes include protein heterotetramerization and homotetramerization, stomatal closure, and response to stress. The gene is linked to pathways for arsenite import, arsenic uptake and detoxification, and response to heavy metals. Associations with salinity tolerance and stomatal resistance have been noted. Studies of related genes in other species connect the family to water transport and stress responses, though these functions are not yet established for BdPIP1 itself.