Respiratory and enzymatic changes in the Colletotrichum leaf spot of turmeric

Abstract

Turmeric leaves infected by Colletotrichum capsici exhibit a higher respiratory rate with augmentation of the terminal oxidative system. A similar effect is brought about by the treatment of the turmeric leaves with toxins isolated from culture filtrate and mycelium of the pathogen. Ascorbic acid oxidase and polyphenol oxidase activity register the maximum increase both under infection and toxin treatment.