Abstract

PECTOLYTIC enzymes have been implicated in the disintegration of plant tissue by a number of phytopathogenic bacteria and fungi1. One procedure to assay culture filtrates for pectolytic activity requires a demonstration of a loss of viscosity for a solution of sodium polypectate or pectin in buffer, using a viscosimeter2. This communication presents results of the effect of 4 buffers at different pH values on the pectolytic activity of culture nitrates from 7 formae speciales of Fusarium oxysporum Schl. emend. Snyder and Hansen.

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