Biotechnology Bulletin ›› 2013, Vol. 0 ›› Issue (1): 172-177.

• Research report • Previous Articles     Next Articles

Isolation,Identification and Cytotoxic Activities of Endophytic Fungifrom Taxus chinensis var. mairei

maireiZhang ,Qingbo1,2,Chen Yuchan1 ,Li Haohua1 ,Pan Qingling1,Wang Lei1,Li Dongli1 ,Tao Meihua1, Zhang Weimin1   

  1. 1. Guangdong Provincial Open Laboratory of Applied Microbiology,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application,State Key Laboratory of Applied Microbiology(Ministry-Guangdong Province Jointly Breeding Base),South China,Guangdong Institute of Microbiology,Guangzhou 510070;
    2. South China Sea Institute of Ocenology,Chinese Academy of Sciences,Guangzhou 510301
  • Received:2012-06-28 Revised:2013-01-31 Online:2013-01-30 Published:2013-01-30

Abstract: Plate method was used to investigate the diversity of endophytic fungi associated with Taxus chinensis var. mairei Cheng etL.K in Guangdong province,and morphological and molecular methods were combined to identify the endophytic fungal strains. A total of 22isolated strains of endophytic fungi were identified and most of them belonged to the genera of Colletotrichum,Guignardia,Botryosphaeria,Arthrinium,Xylaria,Chaetomium,Alternaria,Phomopsis,Helminthosporium. MTT method was used to evaluate their cytotoxic activities,which showed the extracts of 6 strains had inhibition rates over 50% against at least one tumor cell line at 100 μg/mL,among which the extractsof strains A233 and A240 displayed inhibition rates over 90% against the MCF-7 cell line. Therefore,the endophytic fungi from Taxus chinensisvar. mairei were rich in species diversity. Some strains exhibiting good cytotoxic activities deserve further research on their bioactive metabolites.

Key words: Taxus chinensis var. mairei , Endophytic fungi , Isolation and identification , Cytotoxic activity