Abstract
Eleven strains of endophytic fungi which habitat in an endangered, Chinese endemic medicinal plant, Dysosma pleiantha (Hance) Woodson, were isolated and tested for their cytotoxic activity using the brine shrimp lethality bioassay. Six isolates were found to exhibit some cytotoxic activity. Extracts of F1273, F1276, and F1280, which were identified as Trichoderma citrinoviride, Chaetomium globosum and Ascomycete sp., in particular, showed most potent activity with LC50 values of 4.86, 7.71, and 14.88 microg/ml, respectively. These results indicate that endophytic fungi of Dysosma pleiantha could be a promising source for antitumour agents.
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