MCO2 — Glycine max

Summary

GmMCO2 (GLYMA_20G051700V4) on soybean chromosome 20 encodes a copper-containing oxidase with L-ascorbate oxidase activity and p-diphenol:oxygen oxidoreductase activity, belonging to the cupredoxin and multicopper oxidase families. The gene is associated with ascorbate and methanal catabolism, lignin breakdown, glutathione metabolism, and responses to oxidative stress, hydrogen peroxide, ozone, viruses, and iron. It is linked to detoxification, inhibition of salinity response, NO storage, and cell wall organization, with the protein localized to the apoplast, plant-type cell wall, plasmodesma, and plastid. Associations with traits include specific leaf weight, leaf weight, carbohydrate and proline content, seed longevity and viability, water use efficiency, stomatal resistance, drought tolerance, and salt tolerance. Studies of related genes in other species link the family to iron content, sodium concentration, and germination rate.