生物技术通报 ›› 2014, Vol. 0 ›› Issue (8): 132-137.

• 研究报告 • 上一篇    下一篇

23株海洋真菌的分子鉴定及其抗植物病原真菌和细胞毒活性研究

杨小岚1,2,3, 陈玉婵2, 李浩华2, 章卫民2   

  1. 1.中国科学院南海海洋研究所, 广州 510301;
    2.广东省微生物研究所 省部共建华南应用微生物国家重点实验室 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, 广州 510070;
    3.中国科学院大学, 北京 100049
  • 修回日期:2013-12-18 出版日期:2014-08-15 发布日期:2014-08-01
  • 作者简介:作者简介: 杨小岚,女,硕士研究生,研究方向:海洋微生物活性代谢产物;E-mail:1617694366@qq.com

Molecular Identification of 23 Marine Fungal Strains and Their Activities Against Plant Pathogenic Fungi and Cytotoxic Activities

Yang Xiaolan1,2,3, Chen Yuchan2, Li Haohua2, Zhang Weimin2   

  1. 1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301;
    2. State Key Laboratory of Applied Microbiology, South Chinathe Ministry-Province Joint Development, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070;
    3. University of Chinese Academy of Sciences, Beijing 100049
  • Revised:2013-12-18 Published:2014-08-15 Online:2014-08-01
  • Supported by:

    国家自然科学基金项目(31272087);国家“863”计划资助项目(2012AA092104);广东省自然科学基金项目(S2013010014557);广州市科技计划项目(2013J4100067)

摘要:

从南海沉积物中分离得到23株海洋真菌,通过ITS测序进行鉴定。以新月弯孢霉(Curvularia lunata)、柱枝双胞霉(Cylindrocladium scoparium)、链格孢(Alternaria alternata)、胶孢炭疽菌(Colletotrichum gloeosporioides)为受试植物病原真菌,以神经胶质瘤细胞(SF-268)、乳腺癌细胞(MCF-7)、大细胞肺癌细胞(NCI-H460)和肝癌细胞(HepG-2)为受试肿瘤细胞,分别采用生长速率法和SRB法对这些菌株的发酵液粗提物进行抗植物病原真菌和细胞毒活性测试,发现11个菌株的粗提物在浓度为50 mg/mL时,对至少1种受试植物病原真菌的抑制率在50%以上,有9个菌株的粗提物在浓度为100 μg/mL时,对至少1种肿瘤细胞株的抑制率在80%以上,其中菌株Eupenicillium sp. FS100、Penicillium sp. FS105、Dichotomomyces cejpii FS110、Acaromyces ingoldii FS121对植物病原真菌和(或)肿瘤细胞具有明显的抑制活性。

关键词: 海洋真菌, 分子鉴定, 提取物, 抗植物病原真菌, 细胞毒活性

Abstract:

Twenty three marine fungal strains were isolated from the sediments of the South China Sea and identified by intergenic transcribed spacer(ITS)sequencing. The fermentation broth extracts of these marine fungal strains were tested for their inhibitory activities against growth of 4 plant pathogenic fungi, namely Colletotrichum gloeosporioides, Alternaria alternate, Curvularia lunata, Cylindrocladium scoparium, and investigated for their cytotoxic activities against SF-268, MCF-7, NCI-H460 and HepG-2 tumor cell lines by the SRB method. The results showed the extracts of 11 strains presented higher than 50% inhibitory rates against at least one of those plant pathogenic fungi at a concentration of 50 mg/mL and the extracts of 9 strains presented higher than 80% inhibitory rates against at least one of those tumor cell lines at a concentration of 100 μg/mL. Among all strains studied, Eupenicillium sp. FS100, Penicillium sp. FS105, Dichotomomyces cejpii FS110 and Acaromyces ingoldii FS121 exhibited obvious inhibitory activities against plant pathogenic fungi and/or tumor cell lines.

Key words: Marine fungi, Molecular identification, Extract, Activity against plant pathogenic fungi, Cytotoxicity