P5CS1 — Brassica oleracea var. botrytis

Summary

BoP5CS1 (BOLND125_C04P008080.1) on cauliflower chromosome 4 encodes a protein with glutamate 5-kinase activity, glutamylphosphate reductase activity, and D1-pyrroline-5-carboxylate synthetase activity, and binds ATP. The gene is associated with L-proline biosynthesis and transport, and is linked to responses to desiccation, hyperosmotic salinity, oxidative stress, abscisic acid, and thirst. It is associated with proline content, photosynthetic rate, pollen fertility, and salt tolerance traits. Phenotypic associations include drought, salt, freezing, arsenic, and glyphosate tolerance, as well as proline accumulation, flowering time, pollen development, root meristem size, and inflorescence architecture. The encoded protein localises to the cytoplasm, mitochondria, and Golgi complex. Studies of related genes in other species link the family to osmotic stress tolerance, drought resistance, root elongation, and heat tolerance.