中文摘要：

为提高虎杖中白藜芦醇得率，采用虎杖内生真菌直接发酵虎杖转化白藜芦醇苷为白藜芦醇，通过从虎杖根、茎中初筛得到6株内生真菌，复筛以虎杖煮提液为底物发酵，采用高效液相色谱法定量检测发酵液中自藜芦醇苷和白藜芦醇含量。结果表明：6株内生真菌均具有转化白藜芦醇苷为白藜芦醇能力，其中分离于茎内的Jl转化率最高为25．6％。儿经形态学观察及ITS-5．8SrDNA序列分析，鉴定为草酸青霉PeniciUium oxalicum，Genbank登录号为HQ732137。

英文摘要：

In order to improve the yield of resveratrol from Polygonum cuspidatum through endophytic fungi transformation, endophytic fungal strains capable of transforming polydatin from Polygonum cuspidatum were screened. The contents of resveratrol and polydatin were determined by high performance liquid chromatography （HPLC）. The results indicated that 6 endophytic fungal strains capable of transforming polydatin from Polygonum cuspidatum were identified. Strain J1 had the highest transformation rate, 25.6%. The strain J1 was identified as Penicillium oxalicum with Genbank accession number of HQ732137 through morphologic observation and ITS-5.8S rDNA sequence analysis.