SIS7 — Oryza sativa Indica Group

Summary

BGIOSGA037804 (symbol SIS7, also known as OiNCED1, OiSTO1, OSNCED3, and other synonyms) on chromosome 12 of Indica rice encodes a 9-cis-epoxycarotenoid dioxygenase with carotenoid dioxygenase activity and metal binding. The gene is associated with abscisic acid (ABA) biosynthesis and homeostasis, and has been linked to salt, cold, drought, chilling, and aluminium toxicity tolerance, as well as grain size, seed dormancy, embryo development, and brown planthopper defense. It is also connected to stomatal movement, anther development, fruit ripening, and responses to red or far-red light. The product localises to the thylakoid, chloroplast thylakoid membrane, and chloroplast stroma. Studies of related genes in other species link the family to drought tolerance, ABA accumulation, and osmotic stress responses.