"What is a phytohormone?
Plant hormones, also known as phytohormones, are endogenously synthesized compounds in plants. They play crucial roles in regulating responses to external environmental changes, modulating growth states, resisting adverse conditions, and maintaining essential metabolic processes. Phytohormones are of significant importance in plant growth and development, pest and disease resistance, breeding, and protection. Consequently, there is an increasing interest in metabolomics techniques specifically designed for the targeted quantification of plant hormones." https://www.creative-proteomics.com/services/plant-hormone-analysis-service.htm