Biochemical Changes in Teak Leaves Infected by Powdery Mildew Fungus, Uncinula Tectonae Salm

Biochemical alterations in teak plants exposed to biotic stress of powdery mildew infection caused by Uncinula tectonae Salm were studied. Significant gradual loss in the contents of total chlorophylls, carbohydrates (reducing, non reducing sugars and starch) and proteins were observed with an increase in the foliage infection. Total phenol content was considerably increased in the infected leaves. Further, the pathogen caused a stimulation of peroxidase activities in the infected leaves. Observations of all these metabolic changes further lead to drying of the infected leaves and results in defoliation.