Abstract

ANTIFUNGAL ACTIVITY OF AEGIALITIS ROTUNDIFOLIA EXTRACT AGAINST PATHOGENIC FUNGI MYCOVELLOSIELLA

*Saurov Sett, ChandanMahish, IndrajitPoirah, Debjani Dutta, Abhijit Mitra and Arup Kumar Mitra

Abstract

The greyish brown spot on the leaves of Syzygium samarangenseisis a disease caused by fungal and bacterial pathogens. In this investigation a fungal pathogen was isolated and identified as Mycovellociella sp. on the basis of reproductive character, spore size (17x7μm) followed by validation of Koch’s postulates exhibiting similar set of symptoms. The secondary metabolites from various plant species are known to possess interesting bioactive properties with respect to their antifungal activities. Sensitivity of the fungus to acetone extract of Aegialitis rotundifolia (efficacy = 54.4%) collected from Sundarbans and chemical fungicide (methyl hydroxybenzoate efficacy = 20.78%) was studied. The tested extract showed remarkable antifungal potential against the isolated leaf fungus. The antifungal potency of the extract was tested by standard growth inhibitory methods and TLC plate bioassay (Rf = 0.866). These promising findings suggest potential antifungal activity of the mangrove plant material indicating the presence of bioactive compounds against leaf fungus pathogens and exhibiting an alternative source of antifungal compounds for bio-control of Mycovellosiella sp.

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