Diversity and Antifungal Activity Against <i>Sporisorium scitamineum</i> of Bacteria Isolated from Marine Sponge <i>Siphonochalina flexa</i> from Beibu Gulf
Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (7): 1421-1427.DOI: 10.3969/j.issn.1000-2561.2019.07.025

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Diversity and Antifungal Activity Against Sporisorium scitamineum of Bacteria Isolated from Marine Sponge Siphonochalina flexa from Beibu Gulf

JIANG Lei1,2,LI Mi1,LI Zhi2,YI Xiangxi1,GAO Chenghai1,*(),ZHOU Gui2,*()   

  1. 1. Institute of Marine Medicine / Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
    2. School of Marine Sciences and Biotechnology, Guangxi University of Nationalities / Guangxi Key Laboratory Cultivation Base for Polysaccharide Materials and Modifications / Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, Nanning, Guangxi 530006, China
  • Received:2018-07-07 Revised:2019-02-28 Online:2019-07-25 Published:2019-08-01
  • Contact: GAO Chenghai,ZHOU Gui


The purpose of this study was to investigate the distribution and the diversity of co-bacteria of Siphonochalina flexa isolated from Guaishi sea beach and to study its antifungal activities of the fermentation liquids against Sporisorium scitamineum. Eight different isolation media were used to isolate and purify the co-bacteria from S. flexa. The 16S rDNA was employed to explore the diversity of the isolated strains. The effects of the fermentation liqiuds against S. scitamineum were tested with the method of Oxford cup. After the morphological analysis and 16S rDNA alignment, 34 strains of co-bacteria were isolated from S. flexa, belonging to 18 families and 24 genera. Through testing the antifungal activities, we screened 14 kinds of bacteria that had the inhibitory effect on S. scitamineum. The cultivated bacteria in S. flexa were rich in species and most of them showed strong activity of against S. scitamineum.

Key words: Siphonochalina flexa, co-bacteria, species diversity, Sporisorium scitamineum, antifungal activities

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