FK — Triticum turgidum subsp. durum

Summary

TRITD1BV1G218560 (symbol FK, preferred name TtFK) on durum wheat chromosome 1B encodes a sterol C14-reductase with 7-dehydrocholesterol reductase and Δ14-sterol reductase activities, binding NADP and proteins. It is associated with brassinosteroid and sterol anabolism, lutein and carotenoid metabolism, photoprotection, polar cell growth, and embryo development ending in seed dormancy. The product localizes to the ER membrane, Golgi complex, and nucleus. TtFK is linked to photosynthetic rate, dwarfism, herbicide tolerance, and traits including hypocotyl elongation, root growth, apiculus pigmentation, vegetative phase change, embryonic patterning, meristem and stomatal development, and asymmetric cell division. Studies of related genes in other species connect the family to cell division, embryonic development, flowering time, and brassinosteroid homeostasis, while sequence similarity links extend associations to grain size, plant height, leaf chlorophyll content, and anthesis time.