生物技术通报 ›› 2013, Vol. 0 ›› Issue (1): 172-177.

• 研究报告 • 上一篇    下一篇

南方红豆杉内生真菌的分离鉴定及其细胞毒活性研究

张庆波1,2,陈玉婵1 ,李浩华1, 潘清灵1 ,王磊1,李冬利1 ,陶美华1 ,章卫民1   

  1. 1. 广东省微生物研究所 广东省菌种保藏与应用重点实验室 广东省微生物应用新技术公共实验室 广东省华南应用微生物重点实验室- 省部共建国家重点实验室培育基地,广州 510070 ;2. 中国科学院南海海洋研究所,广州 510301
  • 收稿日期:2012-06-28 修回日期:2013-01-31 出版日期:2013-01-30 发布日期:2013-01-30
  • 作者简介:张庆波,男,博士研究生,研究方向:微生物资源及其应用;Email: gudaobo@163.com
  • 基金资助:
    广州市科技计划项目(2009J1-C191)

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 Published:2013-01-30 Online:2013-01-30

摘要: 采用平板培养法对采自广东省的南方红豆杉进行内生真菌的分离,并通过形态学和分子生物学方法进行分类鉴定;共分离鉴定内生真菌22 株,主要为刺盘孢属(Colletotrichum)、球座菌属(Guignardia)、座腔菌属(Botryosphaeria)、节菱孢属(Arthrinium)、炭角菌属(Xylaria)、毛壳菌属(Chaetomium)、交链孢属(Alternaria)、拟茎点霉属(Phomopsis)、长蠕孢属(Helminthosporium)等属。还采用MTT 法测定了这些内生真菌发酵粗提物的细胞毒活性,活性研究发现有6 个菌株的粗提物在作用浓度为100 μg/mL 时,对至少1 种受试肿瘤细胞株的抑制率在50% 以上,其中菌株A223 和A240 对人乳腺癌细胞MCF-7 的抑制率在90%以上。表明南方红豆杉内生真菌多样性丰富,有些菌株具有良好的细胞毒活性,值得进一步深入研究。

关键词: 南方红豆杉 , 内生真菌 , 分离鉴定 , 细胞毒活性

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