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Journal of Tropical Oceanography ›› 2013, Vol. 32 ›› Issue (3): 47-51.doi: 10.11978/j.issn.1009-5470.2013.03.007cstr: 32234.14.j.issn.1009-5470.2013.03.007

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Preliminary identification of 18 marine fungal strains from the South China Sea and screening of their fermentation products for cytotoxic and antibacterial activities

ZHANG Ling1, 2, 3, ZHANG Qing-bo1, 3, CHEN Yu-chan2, LI Hao-hua2, WANG Lei2, ZHANG Wei-min2   

  1. 1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. Guangdong Institute of Microbiology, Guangdong Provincial Key Laboratory of Microbial Collection and Application, Guangdong Provincial Open Laboratory of Applied Microbiology, State Key Laboratory of Applied Microbiology, South China (The Ministry-Province Joint Development), Guangzhou 510070, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China;
  • Received:2011-12-22 Revised:2012-02-20 Online:2013-08-27 Published:2013-08-28
  • Contact: 章卫民。电话: 020-37656321; E-mail:wmzhang58@qq.com

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Abstract:

Eighteen strains of marine fungi were isolated from the sediments of the South China Sea and primarily identified by intergenic transcribed spacer (ITS) sequencing. Cytotoxic and antibacterial activities of their fermentation products were evaluated using the 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-di-phenytetrazoliumromide (MTT) method. The results showed that five strains displayed cytotoxic activity against human breast adenocarcinoma cell line (MCF-7) with an inhibition rate of above 90%; fifteen strains exhibited bacterial inhibition against Staphylococcus aureusat the rate above 90%, accounting for 83.3% of the total strains isolated; two strains showed bacterial inhibition against Escherichia coliat the rate above 90% and two strains showed bacterial inhibition against Pseudomonas aeruginosaat the rate above 90%; and one strain was found to show strong bacterial inhibition against the three tested bacteria.

Key words: marine fungi, cytotoxic, antibacterial

CLC Number: 

  • P735.51