AM25 — Brachypodium distachyon

Summary

BdAM25 (BRADI_3G10878V3) on chromosome 3 of Brachypodium distachyon encodes an aquaporin-like protein with a major intrinsic protein (MIP) domain, annotated with water, glycerol, urea, lactate, arsenite and borate channel activities. It is associated with membrane transport of these substrates, including hydrogen peroxide, and with responses to boron, arsenic, glucose, hypoxia and defense regulation. The gene is linked to seed development, nodulation, and localisation at the lateral plasma membrane, peribacteroid membrane, ER and nucleus. Associations include seed weight, boron uptake and deficiency tolerance, arsenite and aluminum tolerance, urea uptake, and pollen development. Studies of related genes in other species connect the family to arsenic accumulation, silicon transport, salt stress, reproductive development, and grain traits.