AM25 — Brachypodium distachyon

Summary

BdAM25 (BRADI_3G59390V3) on chromosome 3 of Brachypodium distachyon encodes an aquaporin-like major intrinsic protein (MIP) with transmembrane transporter activities for lactate, arsenite, silicate, glycerol, borate, urea and water, as well as channel activity and histone H3T11 kinase activity. The gene is associated with transport of lactate, silicic acid, borate, arsenite, urea and hydrogen peroxide across membranes, and with responses to boron, arsenic, glucose, hypoxia and defense regulation, as well as seed development. It localises to the lateral plasma membrane, Casparian strip, endoplasmic reticulum, cytoplasm and nucleus. Associations with seed weight, boron uptake and deficiency tolerance, arsenite and aluminum tolerance, and arsenic distribution have been noted. Studies of related genes in other species link the family to boron and silicon transport, stress tolerance, grain number, biomass yield, and reproductive development.