AOS — Nicotiana attenuata

Summary

A4A49_14521 (AOS) on chromosome 11 of coyote tobacco encodes a cytochrome P450 with allene oxide synthase, colneleate synthase, allene-oxide cyclase, hydro-lyase, monooxygenase and oxidoreductase activities, and binds heme and iron. The gene is associated with jasmonic acid content, oxylipin metabolism, and responses to jasmonic acid, herbivory, fungi and viruses. It is linked to photosynthetic rate, nectar secretion, filament elongation, male fertility, anther dehiscence, salt tolerance, somatic embryogenesis, cell death, and sepal senescence. The product localises to the chloroplast membrane, thylakoid, envelope, plastid, mitochondria and cytosol. Studies of related genes in other species connect the family to grain size, starch yield, fruit size, net photosynthetic rate, and resistance to late blight, bacterial pathogens, aphids and cold stress.