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Localization of Some Enzymes in Roots of Susceptible and Resistant Potatoes Infected With Heterodera Rostochiensis

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For more content, see Nematology.

The localization of the active peroxidase, tyrosinase and β-glucosidase in roots of potatoes both susceptible and resistant to Heterodera rostochiensis and invaded with larvae of this nematode was tested. In the necrotic cells in roots of resistant potato a high activity of all the three above mentioned enzymes was observed. Giant cells formed in roots of susceptible potato contained an active tyrosinase, but did not show the presence of active peroxidase and β-glucosidase. β-glucosidase was seen only in the cells lying close to the nematodes. The role of the enzymes tested in resistant - susceptible reactions of the potato to H. rostochiensis is discussed.

Affiliations: 1: Instytut Ochrony Roslin, Poznań, Poland


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