Abstract
Thirty-six strains of marine actinomycetes were isolated from a sample of marine sediment collected from the Yellow Sea and evaluated in terms of their inhibitory activity on the growth of Aspergillus parasiticus and the production of norsolorinic acid using dual culture plate assay and agar diffusion methods. Among them, three strains showed strong antifungal activity and were subsequently identified as Streptomyces sp. by 16S rRNA gene sequencing analysis. The supernatant from the fermentation of the MA01 strain was extracted sequentially with chloroform and ethyl acetate, and the activities of the extracts were determined by tip culture assay. The assay results show that both extracts inhibited mycelium growth and toxin production, and the inhibitory activities of the extracts increased as their concentrations increased. The results of this study suggest that marine actinomycetes are biologically important for the control of mycotoxins, and that these bacteria could be used as novel biopesticides against mycotoxins.
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Supported by the China Ocean Mineral Resources Research and Development Association Project (No. DY125-15-R-01) and the National Natural Science Foundation of China (Nos. 30870003, 31100090)
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Yan, P., Shi, C., Shen, J. et al. Inhibition of norsolorinic acid accumulation to Aspergillus parasiticus by marine actinomycetes. Chin. J. Ocean. Limnol. 32, 1264–1269 (2014). https://doi.org/10.1007/s00343-014-3361-6
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DOI: https://doi.org/10.1007/s00343-014-3361-6