Used to measure the activity of plant protein kinase (PK) enzymes in biological samples, this ELISA kit is essential in plant physiology and molecular biology research. It enables researchers to study signal transduction pathways involved in plant growth, stress responses, and hormone regulation. Commonly applied in studies of abiotic stress such as drought, salinity, and temperature extremes, the kit helps assess how protein phosphorylation levels change under different conditions. It is also used in agricultural research to evaluate the effects of treatments like fertilizers, pesticides, or genetic modifications on plant cellular activity. The assay provides a quantitative, sensitive, and high-throughput method ideal for lab-based plant biochemistry studies.