Changes in peroxidase activity in cell structures of lupin roots infected by Fusarium culmorum

Infection of lupin seedlings with Fusarium culmorum results in the increase in peroxidase activity with syringaldazine as a substrate, mostly in microsomes and cell walls, in the latter fraction somewhat later than in microsomes and cytosol. Less evident were the changes upon infection in peroxidase activity with guaiacol as a substrate. Both qualitative and quantitative differences in the peroxidase forms were evidenced on electrofocusing of the enzyme in the examined subcellular fractions.