Growth and peroxidase production in cultures of horseradish (Armoraciu mticunu).

Peroxidase, an enzyme of commercial importance to the diagnostic industry, is currently extracted and purified from the roots of field-grown horseradish plants (Armoracia rusticana) by conventional methods. It is, however, known that plant peroxidases occur in undifferentiated cells maintained in culture at a specific and total activity which may surpass that of the root (Shinshi & Noguchi, 1976). In this report we have examined cell cultures of the horseradish plant as a source of the enzyme