NCED9 — Brassica oleracea var. botrytis

Summary

BoNCED9 on chromosome 2 of cauliflower encodes a 9-cis-epoxycarotenoid dioxygenase, a carotenoid-cleaving enzyme with metal-binding activity. The gene is associated with abscisic acid (ABA) biosynthesis and homeostasis, as well as with the anabolism of lycopene, beta-carotene and xanthophylls, and with carotene breakdown. It is linked to seed dormancy, germination, fruit ripening, anther and pollen development, and responses to salicylate, gibberellin, auxin, thirst and salinity. The product localises to the chloroplast thylakoid membrane and stroma. BoNCED9 is also associated with susceptibility to Cauliflower mosaic virus. Related genes in other species connect the family to seed dormancy, ABA levels, drought tolerance, transpiration rate, germination rate, seed longevity and anthocyanin content.