Cytotoxic activity of endophytes isolated from Allamanda blanchetii A. DC Harsha D Pednekar, Harsha V Hegde, Pramod J Hurakadale, Jyoti D Wagawade, Kishore G Bhat, Chetana Bogar Indian Journal of Health Sciences and Biomedical Research (KLEU) 2019 12(2):112-116 AIM: To evaluate the cytotoxic potential of endophytic fungi isolated from A. blanchetii. MATERIALS AND METHODS: Endophytic fungi were isolated from A. blanchetii using surface sterilization methods, grown in different types of media to ascertain their suitability for growth. Mass culture was prepared using suitable media and extracts using several solvents were prepared and dried. These extracts were later evaluated using MTT assay for their cytotoxic potential. RESULTS: Hydroalcoholic extract of Phomopsis species exhibited better cytotoxicity (80 μg/ml) when compared ethyl acetate extract of the same 160 μg/ml. Similarly, ethyl acetate extract of Phomopsis species, ethyl acetate extract of Alternaria aff. raphani J. W. Groves and Skolko also demonstrated cytotoxicity of 160 μg/ml in MTT assay against MCF 7 cell line. CONCLUSION: Both the species of Phomopsis and Alternaria have shown significant cytotoxicity in MTT assay.