Effect of phenolic compounds from Eucalyptus on the mycelial growth and conidial germination of Cryphonectria cubensis

Abstract
Mycelial growth and conidial germination of C. cubensis (Bruner) Hodges were inhibited by phenolic compounds of Eucalyptus spp. Inhibitory of caffeic, p-coumaric, ferulic, gallic, protocatechuic, gentistic, and benzoic acids varied with the concentration, presence, and numbers of -OH and -OCH3 substituents attached to the aromatic ring of these substances. The possible role of these compounds in the resistance of eucalypts against C. cubensis is discussed.