**7. Concluding remarks**

Throughout this chapter, the importance and interest in the knowledge of flavonoids as a big group of natural products, present in different organisms, have been emphasized. They have been widely investigated, from their biosynthesis, analytical techniques for their analysis, to their biological activity. They are compounds with different responses to biotic and abiotic factors, which can influence the agricultural sector as attractants for pollinators, as pigment to flowers and fruits, allelochemical functions, symbiosis with beneficial organisms, and as pest control.

The importance of flavonoids lies not only in the functions in plants but also in different therapeutic and nutraceutical applications. It is a group that is present in a wide variety of plant species, in different concentrations. In addition, its beneficial effects on health have been demonstrated and one of the most notable examples is its antioxidant activity.

However, the information linked to agriculture is scattered. Therefore, the purpose of this chapter is to provide an overview of their applications and show that metabolomics is an effective tool for research linked to metabolic processes of flavonoids with various agricultural crops.
