ASN — Triticum aestivum

Summary

TRAESCS1A02G382800, designated TaASN on wheat chromosome 1A, encodes an asparagine synthase (glutamine-hydrolyzing) with aspartate-ammonia ligase activity, belonging to the Asn_synthase family. This gene is associated with L-asparagine biosynthesis and amino acid metabolism, as well as responses to sucrose, glucose, fructose, and absence of light. TaASN has been linked to ABA response, hyperosmotic salinity response, and general stress response in wheat. It is associated with grain number, grain weight, plant height, root dry weight, photosynthetic rate, heat tolerance, salt response, and wheat stripe rust disease response. The gene product localizes to the cytosol, plasmodesma, and stress granules. Studies of related genes in other species link the family to nitrogen recycling, seed nitrogen content, and leaf senescence, as well as grain protein, yield, and nitrogen metabolism.