Achillea sp., Artemisia sp., Matricaria sp., Santolina sp. and Tanacetum sp. are the most important genera of Anthemideae subfamily that due to having flavonoids and antioxidant compounds have significant applications in pharmacology. Flavonoids are phenolic compounds that are classified in non-enzymatic antioxidants. Phenylalanine ammonia lyase (PAL) is a key enzyme in ...