AO — Cicer arietinum

Summary

LOC101498087 (AO, CaAO) on chickpea chromosome 6 encodes a protein with L-ascorbate oxidase and multicopper oxidase domains, including cupredoxin domains. The gene is associated with L-ascorbate oxidase activity, p-diphenol:oxygen oxidoreductase activity, copper binding, and redox activity. It is linked to ascorbate catabolism, lignin breakdown, calcium signaling, and responses to iron, hydrogen peroxide, jasmonic acid, heat, and viruses. It is associated with downregulation of antiviral responses and upregulation of defense responses to insects, as well as signal transduction and defense responses. The protein localizes to the apoplast, plasmodesmata, and extracellular space. CaAO is associated with drought tolerance and iron transport. Related genes in other species are linked to iron content traits and spider mite resistance.