Wild berries are a characteristic part of the Northern nature and they are also recognized as sources of health beneficial secondary metabolites with antioxidant properties. It has been shown that the northern origins of certain forest berries produce higher levels of anthocyanins compared with the southern counterparts. However, the mechanism behind this phenomenon is not understood. The research of the project focuses on characterizing regulatory processes involved in biosynthesis of anthocyanins during fruit development and ripening especially on Vaccinium and Fragaria berries. The research also focuses on gene x environment interaction in biosynthesis of anthocyanins and other phenolic compounds in these berry producing plants.