P5CS1 — Brassica napus

Summary

BnP5CS1 (DARMORV10_C04P67610.1) on chromosome C04 of oilseed rape encodes a protein with glutamate 5-kinase and glutamylphosphate reductase activities, and binds ATP. The gene is associated with proline metabolism, including both biosynthesis and breakdown, as well as responses to water deficit, desiccation, hyperosmotic salinity, and oxidative stress. It has been linked to leaf water potential, photosynthetic rate, proline content, and heterosis. Phenotypic associations include drought, salt, freezing, arsenic, and glyphosate tolerance, along with flowering time, pollen development, root meristem size, and root elongation under low water potential. The encoded protein localises to the cytoplasm, mitochondria, and Golgi complex, and is associated with salicylic acid and chlorophyll anabolism, the TCA cycle, leaf senescence, and the transition to reproductive growth.