FSD1 — Cucumis sativus

Summary

CsFSD1 (CSA_1G025980) on cucumber chromosome 1 encodes a superoxide dismutase (EC 1.15.1.1) belonging to the Fe/Mn superoxide dismutase family. The enzyme is associated with superoxide dismutase activity, siRNA and miRNA binding, RNA endonuclease activity, and metal binding including manganese and copper. It localizes to plastid nucleoids, chloroplasts, thylakoids, mitochondria, and the apoplast. CsFSD1 is linked to reactive oxygen species homeostasis, root gravitropism, and responses to abiotic stimuli. The gene is associated with numerous agronomic traits including leaf dry weight, seedling height, relative chlorophyll content, cell membrane stability, drought sensitivity, hydrogen peroxide content, and abscisic acid content. It is linked to oxidative stress tolerance, salt stress tolerance, copper deficiency response, lateral root development, chloroplast biogenesis, photosynthetic efficiency, and seed fertility. Related genes in other species are linked to superoxide detoxification, salt stress response, and miRNA activity.