P5CS1 — Brassica napus

Summary

BnP5CS1 (DARMORV10_C04P07710.1) on chromosome C04 of oilseed rape encodes a protein with glutamate 5-kinase and glutamylphosphate reductase activities, possessing D1-pyrroline-5-carboxylate synthetase activity and ATP binding. This gene is associated with L-proline biosynthesis and breakdown, proline metabolism, and regulation of proline anabolism. It is linked to responses to desiccation, hyperosmotic salinity, oxidative stress, and thirst, as well as salicylic acid and chlorophyll anabolism, the TCA cycle, flower and root development, and the transition to reproductive phase. The encoded protein localises to the cytoplasm, mitochondria, and Golgi complex. Associations include proline content, leaf water potential, photosynthetic rate, heterosis, and tolerance to drought, salt, freezing, arsenic, and water stress. It is also linked to flowering time, pollen development and sterility, root meristem size and elongation, inflorescence architecture, and climate adaptation.