Used in plant molecular biology research to detect and quantify the expression of the GUS reporter gene, which is commonly employed as a marker in transgenic plants. The kit enables researchers to assess promoter activity, gene expression patterns, and transformation efficiency by measuring GUS enzyme activity in plant tissue extracts. It is especially valuable in studies involving genetic engineering and functional genomics, providing a sensitive and reliable method for visualizing gene expression without the need for radioactive materials. Widely applied in agricultural biotechnology and plant physiology research.