HYD1 — Triticum turgidum subsp. durum

Summary

TRITD5BV1G011630 (symbol HYD1, also known as MAD4) on durum wheat chromosome 5B encodes a C-8 sterol isomerase with steroid D-isomerase and cholestenol D-isomerase activity, belonging to the EBP/EXPERA protein family. The gene is associated with sterol anabolism, carotenoid metabolism and anabolism, photoprotection, and cold acclimation. Its product localizes to the ER membrane, membrane, and nucleus. HYD1 is associated with lutein, zeaxanthin, carotene, and chlorophyll content, as well as spike length and plant height. It is also associated with embryonic development and patterning, vascular tissue development, seedling morphogenesis, root growth and patterning, stomatal development, cell expansion, cellulose biosynthesis, and cell wall integrity. Related genes in other species link the family to sterol-8 isomerase function and defective cell patterning with reduced root systems.