ABCB25 — triticum aestivum

Summary

TRAESCS7B02G181700 (symbol ABCB25, preferred name TaABCB1) on bread wheat chromosome 7B encodes an uncharacterized protein with domains characteristic of type I exporters and AAA+ ATPases, and is annotated with ABC transporter and ATP hydrolase activity. It is associated with auxin influx and efflux transmembrane transporter activities, as well as transporters for aluminium ion, thiosulphate, sulfate, UDP-glucose, and phosphate. The gene has been linked to seed width in wheat and to a wide range of traits including grain yield, grain weight, grain number, grain protein content, tiller number, plant height, ear number, harvest index, flag leaf senescence, grain filling period, cold tolerance, chlorophyll content, root length, shoot fresh weight, and auxin content. It is also associated with processes such as auxin polar transport, response to aluminium, detoxification of aluminium ion, photomorphogenesis, blue light response, and activation of brassinosteroid-mediated signalling. The encoded protein localises to the plasma membrane, tonoplast, vesicle membrane, and mitochondrial inner membrane.