AM25 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0666440, designated HvAM25, encodes an aquaporin family protein on barley chromosome 7H. The product exhibits transmembrane transporter activities for lactate, arsenite, silicate, glycerol, borate, urea, and water, as well as channel activity and protein binding. HvAM25 is associated with transport of lactate, silicic acid, borate, arsenite, urea, and hydrogen peroxide, and with responses to boron, arsenic, glucose, hypoxia, and defense. The protein localizes to the lateral plasma membrane, Casparian strip, endoplasmic reticulum, plasmalemma, cytoplasm, and nucleus. The gene is associated with boron uptake and deficiency tolerance, arsenite and aluminum tolerance, arsenic distribution, aluminum translocation, urea uptake, pollen development, and root-to-shoot translocation. Related genes in other species are linked to traits including grain number, seed weight, biomass yield, water use efficiency, and salinity tolerance.