ABSTRACT
Objective: To discuss correlations between the chemical constituents of different endophytic fungi and their host and provide basis of researching the mechanism of some endophytic fungi which have the abilities to produce the same or similar chemical constituents as their host plant product. Methods: Chemical compounds derived from the endophytic fungi and their host Spiramthes sinensis were tested by HPLC, and the correlation data were analysed by SPSS 16.0. Results: The clustering is not obvious between petroleum ether extracts of fungi; the result of study on the ethyl acetate extracts and water-saturated n-butanol extracts showed that fungi isolated from the same organ tended to cluster together and the same species fungi tended to cluster together. Conclusion: Correlation among the petroleum ether extracts of the fungi is not obvious. The correlation between the ethyl acetate extracts are the most obvious in organ from which the fungi isolated and within the species.