P5CS — triticum aestivum

Summary

TRAESCS1A02G281400, designated TaP5CS (also known as TaP5CS2-1A), encodes a bifunctional enzyme with glutamate 5-kinase and glutamylphosphate reductase activities, catalysing the first two steps of proline biosynthesis. In bread wheat, this gene is associated with drought tolerance. It is linked to a wide range of agronomic traits including grain yield, grain weight, plant height, tiller number, spike length, days to heading, stand establishment, and chlorophyll content. The gene has been connected to responses to salt, cold, and oxidative stress, as well as to proline content, photosynthetic rate, and respiration rate. It is also associated with embryo development, pollen fertility, and flowering time. Studies of related genes in other species link the family to osmotic stress tolerance, drought resistance, and root elongation under low water potential.