AM25 — Sorghum bicolor

Summary

SORBI_3004G238100 (SbAM25) on sorghum chromosome 4 encodes an aquaporin of the NIP (nodulin-26-like intrinsic protein) subfamily, possessing water, glycerol, lactate, arsenite, silicate, borate and urea transmembrane transporter activities. The gene is associated with the transport of boron, silicic acid, arsenite, lactate and urea, and with responses to boron, arsenic, hypoxia and glucose. It has been linked to boron uptake and deficiency tolerance, arsenite tolerance and uptake, aluminum tolerance and translocation, and arsenic distribution. Localisation evidence connects the protein to the plasma membrane, lateral plasma membrane, Casparian strip, endoplasmic reticulum and nucleus. Studies of related NIP family members in other species link the family to silicon transport, salt stress, reproductive development, grain traits, and biomass yield.