AOS — Cucumis melo

Summary

MELO3C010910.2 (CmAOS) on melon chromosome 4 encodes a cytochrome P450 family protein with allene oxide synthase, colneleate synthase, allene-oxide cyclase, hydro-lyase, monooxygenase and oxidoreductase activities, and heme and iron binding. The gene is associated with jasmonic acid anabolism, oxylipin metabolism and anabolism, fatty acid metabolism and anabolism, sterol metabolism, cellular respiration, the epoxygenase P450 pathway, and responses to wounding, jasmonic acid, and fungi. It is linked to defence responses to necrotrophic fungi and insect herbivory, and to traits including photosynthetic rate, salt tolerance, nectar secretion, somatic embryogenesis, virus resistance, male sterility, and cell death. The encoded protein localises to the chloroplast membrane, thylakoid, envelope, plastid, mitochondria and cytosol. Studies of related genes in other species connect the AOS family to jasmonic acid signalling, defence against pathogens and herbivores, wound healing, anther dehiscence, and abiotic stress tolerance.