Phenolic compounds in strawberry (Fragaria x ananassa Duch.) microshoots

The HPLC method was used to study the composition and contents of phenolic compounds in the microshoots of Fragaria x ananassa Duch. plantlets during the multiplication and in vitro rooting stages in comparison with field-grown plants. Phenolic compounds of the microshoots are predominantly represented by ellagic acid and its derivatives, as well as hydroxycinnamic and hydroxybenzoic acids, in contrast to the leaves of field-grown plants with a high level of flavonoids. The increased contents of individual hydroxybenzoic and hydroxycinnamic acids in the microshoots compared with the leaves of field-grown strawberry plants indicates a possible role of phenolic acids in plant adaptation under in vitro conditions.