Used for the quantitative detection of polyamine oxidase (PAO) activity in plant samples, this ELISA kit enables researchers to assess polyamine metabolism, which plays a key role in plant growth, development, and stress responses. It is widely applied in plant physiology and molecular biology studies to monitor enzymatic activity associated with cellular processes such as senescence, abiotic stress tolerance, and programmed cell death. The kit provides a reliable and sensitive method for high-throughput analysis in agricultural research and genetic engineering of crops.