ASD — Oryza sativa Indica Group

Summary

BGIOSGA026330 (ASD) on chromosome 7 of Indica rice encodes a short-chain dehydrogenase/reductase (SDR) family protein with multiple oxidoreductase activities, including 2,4-dienoyl-CoA reductase (NADPH), momilactone-A synthase, secoisolariciresinol dehydrogenase, and xanthoxin dehydrogenase (NAD+) activities. The gene is associated with abscisic acid (ABA) biosynthesis and sensitivity, salt and drought stress tolerance, and stress granule localisation. It has been linked to seed maturation, germination, dormancy, and grain yield, as well as responses to wounding, heat, UV, jasmonic acid, and fructose. Additional associations include plant height, submergence tolerance, ethylene sensitivity, herbivore resistance, endosperm cellularization, seed size, stomatal closure, and resistance to Botrytis cinerea. Studies of related genes in other species connect the family to ABA deficiency, reduced seed dormancy, wilting, and altered sugar and osmotic stress responses.