ASD — Sorghum bicolor

Summary

SORBI_3002G407400 (SbASD) on sorghum chromosome 2 encodes a short-chain dehydrogenase/reductase (SDR) family protein with NAD(P)-binding domain, annotated with multiple oxidoreductase activities including xanthoxin dehydrogenase (NAD+), 2,4-dienoyl-CoA reductase (NADPH), and zerumbone synthase activity. The gene is associated with abscisic acid (ABA) biosynthesis and its regulation, as well as responses to heat, fructose, thirst, and bacterial defence. It has been linked to traits including sprouting tolerance, seed dormancy, seed size, ethylene sensitivity, and sugar signalling. Localisation evidence connects the product to the cytosol, nucleus, mitochondria, stress granules, and extracellular space. Studies of related genes in other species link the family to ABA deficiency, wilting, reduced seed dormancy, drought and salt tolerance, and defence responses.