SIS7 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0508150 (HvSIS7) on barley chromosome 5H encodes a carotenoid dioxygenase with 9-cis-epoxycarotenoid dioxygenase activity and metal binding. The gene is associated with abscisic acid content, accumulation, and biosynthesis, as well as pre-harvest sprouting, seed secondary dormancy, and seed dormancy processes. It is linked to responses to salt, hyperosmotic salinity, red or far-red light, gibberellin, and salicylate, and to anther development, fruit ripening, and leaf senescence. The product localises to the thylakoid, chloroplast thylakoid membrane, and chloroplast stroma. Associations also include drought response, high light stress tolerance, osmotic stress tolerance, stomatal closure, and resistance to Botrytis cinerea. Studies of related genes in other species link the family to drought tolerance, transpiration rate, and dehydration response, as well as salt tolerance, grain size, and dormancy.