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Mar. Drugs 2011, 9(8), 1379-1390; doi:10.3390/md9081379

Diversity and Antibacterial Activities of Fungi Derived from the Gorgonian Echinogorgia rebekka from the South China Sea

1
Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
2
Department of Biology, Qingdao University, Qingdao 266071, China
*
Author to whom correspondence should be addressed.
Received: 15 June 2011 / Revised: 11 July 2011 / Accepted: 15 July 2011 / Published: 12 August 2011
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Abstract

The diversity of symbiotic fungi associated with the gorgonian coral Echinogorgia rebekka from the Weizhou coral reef in the South China Sea was investigated. Combined with morphologic traits, ITS-rDNA sequences revealed 18 fungal strains from this gorgonian. All of the 18 fungi belonged to the phylum Ascomycota and were distributed among seven genera in five orders: Eurotiales (Aspergillus and Penicillium), Pleosporales (Alternaria), Capnodiales (Cladosporium), Trichosphaeriales (Nigrospora) and Hypocreales (Hypocrea and Nectria). Antibacterial activities of these fungal strains were investigated with five pathogenic bacteria. All of the 18 fungal strains displayed different levels of antibacterial activities, most of which exhibited moderate to high antibacterial activities to the Gram-positive pathogens Staphylococcus aureus and Micrococcus tetragenus, and showed relatively low bioactivities to other three pathogenic bacteria. Several fungal strains in the genera Penicillium and Cladosporium with strong antibacterial activities provide potential for further research on isolation of bioactive secondary metabolites.
Keywords: gorgonian coral; Echinogorgia rebekka; fungi; diversity; antibacterial activity gorgonian coral; Echinogorgia rebekka; fungi; diversity; antibacterial activity
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Wang, Y.-N.; Shao, C.-L.; Zheng, C.-J.; Chen, Y.-Y.; Wang, C.-Y. Diversity and Antibacterial Activities of Fungi Derived from the Gorgonian Echinogorgia rebekka from the South China Sea. Mar. Drugs 2011, 9, 1379-1390.

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