AM25 — Sorghum bicolor

Summary

SbAM25 (SORBI_3009G075900) on sorghum chromosome 9 encodes an aquaporin-like protein with MIP and aquaporin-transporter domains, annotated as a water, glycerol, urea, lactate, arsenite, silicate and borate channel. It is associated with transport of these substrates, including hydrogen peroxide membrane transport, and with responses to boron, arsenic, hypoxia and glucose. The gene is linked to boron uptake and deficiency tolerance, arsenite tolerance and uptake, aluminum tolerance and translocation, and urea uptake. Localisation evidence connects it to the plasma membrane, lateral plasma membrane, Casparian strip and endoplasmic reticulum. Studies of related genes in other species link the family to silicon transport, arsenic accumulation, salt and drought responses, and traits including grain number, seed weight, biomass yield and water use efficiency.