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A Fungus Capable of Degrading Microcystin-LR in the Algal Culture of Microcystis aeruginosa PCC7806

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Abstract

Microcystins (MCs) are a family of natural toxins produced by cyanobacteria (blue-green algae). Microbial degradation is considered an efficient method for eliminating cyanobacteria and MCs in environmental conditions. This study examines the ability of Trichaptum abietinum 1302BG, a white rot fungus, to degrade microcystin-LR in the harmful algal culture of Microcystis aeruginosa PCC7806. Results showed that microcystin-LR could not be detected by high-performance liquid chromatography after 12 h in algal culture incubated with the fungus. There were also high activities of catalase and peroxidase in algal culture incubated with the fungus. However, similar to the control, they decreased to normal levels after 72 h. Meanwhile, the micronucleus test in the toxicity studies revealed that the degraded algal culture had low toxicity.

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Acknowledgments

This work was financial supported by Project of National Basic Research Program of China (2008CB418004) and National Science Foundation of China (30870419).

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Authors and Affiliations

  1. School of Life Science, Nanjing University, Nanjing, 210093, People’s Republic of China

    Jingjing Du, Guiying Zhao & Xingjun Tian

  2. School of Life Science, Nanjing Normal University, Nanjing, 210046, People’s Republic of China

    Yong Jia

  3. School of Life Science, Heilongjiang University, Harbin, 150080, People’s Republic of China

    Fuqiang Song

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  1. Yong Jia
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  4. Guiying Zhao
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Correspondence to Xingjun Tian.

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Jia, Y., Du, J., Song, F. et al. A Fungus Capable of Degrading Microcystin-LR in the Algal Culture of Microcystis aeruginosa PCC7806. Appl Biochem Biotechnol 166, 987–996 (2012). https://doi.org/10.1007/s12010-011-9486-6

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  • DOI: https://doi.org/10.1007/s12010-011-9486-6

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