CAD and infection: We therefore analzyed and compared the expression changes of genes coding for phenylalanine ammonia lyase (PAL) [59], cinnamate 4-hydroxylase (C4H) [60] and cinnamoyl alcohol dehydrogenase (CAD) in the pTRV2-SlHUB1- and pTRV2-SlHUB2-infiltrated plants with that in the pTRV2-GUS-infiltrated plants before and after infection by B. cinerea.