CSD2 — Cucumis sativus

Summary

CsCSD2 (CSA_6G148290) on cucumber chromosome 6 encodes a copper-zinc superoxide dismutase (EC 1.15.1.1), a plastid-localised enzyme that catalyses the removal of superoxide radicals. The gene is associated with cellular responses to oxidative stress, ozone, UV-B, light intensity, and sucrose stimulus, as well as with chlorophyll breakdown, the ascorbate-glutathione cycle, and nitrate import. It has been linked to traits including photosynthetic rate, quantum yield, chlorophyll content, root volume and length, stem diameter, transpiration rate, stomatal resistance, abscisic acid content, proline content, soluble protein content, bacterial blight disease resistance, and salt tolerance. The encoded protein localises to the thylakoid, chloroplast stroma, apoplast, and plasmalemma. Studies of related genes in other species link the family to superoxide detoxification, bacterial and fungal disease resistance, and chitin-induced immune signalling.