AM25 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0231660 (HvAM25) on barley chromosome 3H encodes an aquaporin family protein, a member of the major intrinsic protein (MIP) superfamily. The gene is associated with transmembrane channel activity for water, glycerol, urea, lactate, arsenite, silicate, and borate, and is linked to transport and detoxification of arsenic and boron, response to hypoxia, glucose, and defense responses. It localizes to the plasma membrane, lateral plasma membrane, Casparian strip, and endoplasmic reticulum. The gene is associated with boron uptake and deficiency tolerance, arsenite tolerance and uptake, aluminum tolerance and translocation, urea uptake, and pollen development and pollination. Related genes in other species connect the family to silicon transport, salt stress, reproductive development, and grain traits, as well as to yield-related parameters such as seed weight, grain number, harvest index, and biomass.