Estimation of Production of Extracellular Phenol by Alternaria Solani a Leaf Spot Pathogen of Neem (azadirachta Indica L.)

Alternaria solani was a potential leaf spot pathogen of Azadirachta indica L, was isolated from diseased Azadirachta indica L leaves from Nashik and used for the present study. Pathogen was grown on the Czapek-Dox liquid medium substituting or adding different carbon, nitrogen to study phenol production. Considerable variation in the production of total phenol was observed when different carbon compounds were incorporated in the medium. Fructose shows maximum production of phenol, while control shows minimum phenol production. It was observed that nitrogen compound were favorable for production of phenols highest phenols were detected on control and minimum on potassium nitrate.