In this study, a total of 57 strains of endophytic fungi were
isolated from the medicinal plant P. ostii , one isolated strain J1-2,
originally from the stem of plant, wa s fi rst found to produce
paeonol as its host by GC– MS, HRMS/MS and NMR analysis. The
isolate J1-2 wa s identi fi ed as Chaetomium sp. based on morpho-logical characteristics and ITS sequence. The present study shows
that the numerous endophytic fungi inside the medicinal plants
are precious resource for the natural products that are originally
from the plants. It provided a new method to obtain pharmaceuti-cal natural paeonol, and the study preliminarily proved that
endophytic fungi can indeed affect the genuineness of Traditional
Chinese Medicine. Further study will focus on that can regulate
that host plant or endophytic fungus produces paeonol, which will
aim to study the inner relationship between endophytic fungi and
host plants and the relationship between endophytic fungi and
genuineness of traditional Chinese Medicine.