CRB — Triticum turgidum subsp. durum

Summary

TRITD1AV1G021620, designated TtCRB on durum wheat chromosome 1A, encodes a cupin-domain seed storage protein with nutrient reservoir activity. The gene is associated with seed maturation, development, and germination, as well as embryo development ending in seed dormancy. It is linked to abscisic acid anabolism and cellular response to abscisic acid stimulus, brassinosteroid-mediated signalling, photoprotection, xanthophyll metabolism, and regulation of superoxide release. Associations include violaxanthin and neoxanthin content, abscisic acid concentration, root morphology, seed storage protein accumulation, and growth and biomass allocation. The protein localises to the endosperm protein body, protein storage vacuole, chloroplast envelope and stroma, LHCII, vacuole, plasmodesma, mitochondria, and extracellular space. Studies of related genes in other species connect the family to neoxanthin biosynthesis and photooxidative stress tolerance.