Fusicoccin is primarily utilized in plant biology research due to its ability to activate plasma membrane H+-ATPases. This activation leads to the acidification of the cell wall, which promotes cell elongation and growth. Researchers often use fusicoccin to study plant cell expansion, stomatal opening, and the regulation of ion transport across membranes. Its role in enhancing the binding of 14-3-3 proteins to target proteins also makes it a valuable tool for investigating protein-protein interactions and signal transduction pathways in plants. Additionally, fusicoccin has been explored for its potential in improving stress responses in crops, though its application in agriculture remains largely experimental.