... processes such aslignin biosynthesis [1] and methylation of various secondarymetabolites [2]. In many cases, these enzymes may beassociated to plant defense systems against pathogens andthose ... the sameamounts of both Fod-inoculated and Fod-uninoculatedtissues, with the aim of assessing if the F 4¢-OMT activitycould be associated, to some extent, to the tissue s defenseresponse.HPLC ... the tissues of this ornamental.On the other hand, several distinct OMTs may coexist inplant tissues, originating a multienzyme system whichcatalyses the methylation sequence of flavonoids [2]....