P5CS1 — Glycine max

Summary

GmP5CS1 (GLYMA_02G251100V4) on soybean chromosome 2 encodes a protein with D1-pyrroline-5-carboxylate synthetase activity, glutamate 5-kinase activity, and glutamylphosphate reductase activity, and binds ATP. It is associated with L-proline biosynthesis and breakdown, nitrate import, water transport, stomatal movement, and responses to water, flooding, desiccation, salt, hyperosmotic salinity, and ER stress. The gene is linked to proline content, nitrate uptake, photosynthetic rate, chlorophyll content, and salt tolerance. Phenotypic associations include drought tolerance, salt stress tolerance, freezing tolerance, arsenic tolerance, pollen development and fertility, embryo development, root elongation at low water potential, plant height, flowering time, and inflorescence architecture. Studies of related genes in other species link the family to proline biosynthesis, osmotic stress tolerance, drought resistance, heat tolerance, and pathogen resistance.