AOS — Cicer arietinum

Summary

LOC101513500 (CaAOS, also known as CaDDE2 or CaCYP74A) on chickpea chromosome 5 encodes a cytochrome P450 enzyme with allene oxide synthase, colneleate synthase, allene-oxide cyclase, hydro-lyase, monooxygenase and oxidoreductase activities, binding heme and iron. The gene is associated with jasmonic acid and oxylipin biosynthesis, fatty acid metabolism, the epoxygenase P450 pathway, polyamine and sterol metabolism, and responses to wounding, jasmonic acid, and fungal defence. It is linked to drought and salt tolerance, male sterility, anther dehiscence, nectar secretion, somatic embryogenesis, virus resistance, defence against necrotrophic fungi and insect herbivory, and cell death. The product localises to the chloroplast membrane, thylakoid, envelope, plastid, mitochondria and cytosol. Studies of related genes in other species connect the family to additional traits including aphid resistance, stomatal regulation, heat and osmotic stress tolerance, and carotenoid content.