SIS7 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0426410 (HvSIS7) on barley chromosome 5H encodes a 9-cis-epoxycarotenoid dioxygenase (NCED), a carotenoid dioxygenase with metal-binding activity. In barley, the gene is associated with ABA content, pre-harvest sprouting, seed secondary dormancy, and ABA accumulation. It is linked to carotenoid and xanthophyll anabolism, carotene breakdown, gibberellin metabolism and signaling, seed dormancy, anther development, fruit ripening, and responses to red/far-red light, salt, and salicylate. The product localizes to the thylakoid and chloroplast stroma. Associations also include leaf relative water content, photosynthetic rate, chlorophyll and flavonoid content, ethylene sensitivity, and salt tolerance. Related genes in other species are linked to drought tolerance, salt and cold stress responses, grain size, seed dormancy, and lateral root development.