P5CS1 — Glycine max

Summary

GmP5CS1 (GLYMA_18G034300V4) on soybean chromosome 18 encodes a protein with D1-pyrroline-5-carboxylate synthetase activity, glutamate 5-kinase activity, glutamylphosphate reductase activity, and ATP binding. The gene is associated with L-proline biosynthesis, proline breakdown, proline metabolism, the ascorbate-glutathione cycle, and responses to water, desiccation, hyperosmotic salinity and nitrate import. It is linked to traits including proline content, leaf chlorophyll content, photosynthetic rate, stomatal resistance, biomass yield, grain weight, salt tolerance, drought tolerance, freezing tolerance, arsenic tolerance, pollen development and fertility, embryo development, root elongation at low water potential, plant height and flowering time. The product localises to mitochondria, cytoplasm, plasmodesmata and the Golgi complex. Studies of related genes in other species link the family to proline biosynthesis, osmotic stress tolerance, drought resistance, heat tolerance and pathogen resistance.