Used to measure the activity of Δ1-pyrroline-5-carboxylate synthetase (P5CS) enzyme in plant samples, this ELISA kit helps researchers study proline biosynthesis under stress conditions such as drought, salinity, or extreme temperatures. Proline accumulation is a key indicator of plant stress response, so quantifying P5CS activity allows for assessment of plant resilience and adaptation mechanisms. It is widely applied in plant physiology, agricultural research, and breeding programs aimed at developing stress-tolerant crop varieties. The kit enables high-throughput, accurate detection of enzyme levels in leaves, roots, or other plant tissues, supporting studies in environmental stress responses and metabolic regulation.