DES — Nicotiana attenuata

Summary

A4A49_01643 (DES, also known as AOS3) in coyote tobacco (Nicotiana attenuata) on chromosome 10 encodes a cytochrome P450 enzyme with allene oxide synthase, colneleate synthase, allene-oxide cyclase, lyase, monooxygenase and oxidoreductase activities, and binds iron and heme. The product localises to the chloroplast membrane, inner membrane, thylakoid membrane and envelope, as well as the cytosol. This gene is associated with oxylipin and jasmonic acid biosynthesis, fatty acid metabolism, sterol metabolism, jasmonic acid signalling, response to wounding and defense response. It has been linked to photosynthetic rate and arbuscular mycorrhizal fungal colonization. Studies of related genes in other species connect the family to relative yield, fruit flavor, linoleic acid content, root volume, seed coat color, sporogenesis, net photosynthetic rate, starch content, sugar content, jasmonic acid content, root length, photochemical quenching, alpha-ketol formation, volatile aldehyde production and fruit flavor.