Ethanolic extract of mango (Mangifera indica L.) malformed inflorescence as effective antifungal agent

Abstract

Mango (Mangifera indica L.) suffers from floral and vegetative malformation and crop production is seriously affected. The anti-fungal activity of ethanolic extract of malformed mango inflorescence was observed at different concentrations (1000, 2000, 3000, 4000 and 5000 μl/ml) against 10 fungi, viz., Ustilago cynodontis, Cercospora cajani, Sphaerotheca sp., Cercospora sp., Alternaria solani, Bipolaris sp., Helminthosporium sp., Curvularia sp., Fusarium udum and Alternaria cajani. Spore germination of most of the fungi was inhibited at 5000 μg/ml. Some of them were also susceptible at 3000 or 4000 μg/ml concentration. Analysis of phenolic acids by high performance liquid chromatography (HPLC) showed 18 peaks in the extract, but only four could be identified, viz., capachin, gallic, benzoic and cinnamic acids. Because of the high efficacy of ethanolic extract of malformed mango inflorescence, its use under field conditions to control some plant diseases has been suggested.

Keywords:

• mango malformation
• ethanolic extract
• antifungal activity
• phenolic acids