FSD1 — Beta vulgaris subsp. vulgaris

Summary

BvFSD1 (BVRB_2G042720) on sugar beet chromosome 2 encodes a member of the iron/manganese superoxide dismutase family, with superoxide dismutase activity, siRNA and miRNA binding, RNA endonuclease activity, and calcium-dependent protein serine/threonine kinase activity. The gene is associated with reactive oxygen species anabolism and removal of superoxide radicals, regulation of stomatal opening, leaf proximal/distal pattern formation, floral organ abscission, and responses to light intensity, herbicide, copper, and carbon dioxide. It localizes to plastid nucleoids, chloroplasts, mitochondria, thylakoids, and the apoplast. Associations include traits such as biomass yield, seed yield, leaf elongation rate, water use efficiency, transpiration rate, days to flowering, viral and aphid response, and osmotic sensitivity. Studies of related genes in other species link the family to superoxide detoxification, salt stress response, iron deficiency tolerance, miRNA activity, and resistance to fungal pathogens.