ASN — Triticum aestivum

Summary

TRAESCS3D02G077300, designated TaASN, encodes an asparagine synthase (glutamine-hydrolyzing) with aspartate-ammonia ligase activity, belonging to the Asn_synthase family. In bread wheat, this gene is associated with responses to abiotic stresses including salinity, drought, cold, and hyperosmotic salinity, as well as to sucrose, glucose, and fructose availability, and to sucrose starvation and absence of light. It is linked to L-asparagine biosynthesis, amino acid breakdown, and glutathione anabolism. TaASN is associated with agronomically important traits such as grain yield, grain weight, grain protein content, grain filling period, seed color, sprouting tolerance, plant height, anthesis time, panicle and spike length, photosynthetic rate, transpiration rate, osmotic adjustment capacity, and tolerance to salinity and drought. The protein localizes to the cytosol, plasmodesmata, and stress granules. Studies of related genes in other species link the family to seed nitrogen content, development, nitrogen metabolism, and yield.