Three 2-oxoglutarate-dependent dioxygenase activities of Equisetum arvense L. forming flavone and flavonol from (2S)-naringenin

► Three 2-OODs enzyme activities characterized primitive plant species Equisetum. ► First report of flavone synthase I outside Apiaceae family. ► New perspective for course of evolution of flavonoid-committed 2-ODDs. ► At least two independent events of recruitment of FNS I.