Abstract
Abstract The treatment of cell-suspension cultures of Platanus×acerifolia with the GP66 elicitor produced by Ceratocystis fimbriata f. sp platani germlings triggers the fast and intense synthesis of a secondary metabolite whose 1 H NMR and 13 C NMR analysis led to the identification of xanthoarnol. This dihydrofuranocoumarin is principally accumulated in the growth medium reaching the maximum level 48 h after elicitor addition. Xanthoarnol was the major compound produced by elicited cells and showed an inhibitory effect on the germination of conidia of the parasitic fungus. Xanthoarnol is a new phytoalexin described in a plant–fungus interaction.
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