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Isolation and Characterization of Microcystin-Producing Microcystis aeruginosa MBDU 626 from a Freshwater Bloom Sample in Tamil Nadu, South India

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Microbiological Research In Agroecosystem Management

Abstract

Toxin-producing cyanobacteria are a worldwide threat to both human and animal health. Microcystins (MCs) are the most commonly occurring toxins produced by bloom-forming cyanobacteria, especially Microcystis sp. This study describes the occurrence of bloom-forming toxigenic Microcystis aeruginosa MBDU 626 from Manjalar Dam, Theni District, Tamil Nadu, South India. Two microcystin (MC) variants, MC-LR and [D-Asp3] MC-LR were identified from the isolated strain using high-performance liquid chromatography and gas chromatography coupled mass spectrometry (GC/MS). Four peptides such as aeruginosin, microginin, kasumigamide and anabaenopeptin were also co-produced along with these MC variants. Our results show that the presence of cyanobacterial toxins in essential water resources requires rapid remedial action and needs to develop a national program for regular monitoring of toxigenic blooms in freshwater bodies of South India, in general, Tamil Nadu, in particular.

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Acknowledgments

The authors are grateful to the University Grants Commission (UGC), Government of India, for the financial support. AMP Anahas acknowledges the Maulana Azad National Fellowship Scheme (MANF) for the fellowship.

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  1. Department of Microbiology, School of Life Sciences, Bharathidasan University, Palkalaiperur, Tiruchirappalli, Tamil Nadu, 620 024, India

    A. M. P. Anahas, M. Gayathri & G. Muralitharan

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  1. A. M. P. Anahas
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  2. M. Gayathri
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  3. G. Muralitharan
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Correspondence to G. Muralitharan .

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  1. , Microbiology, Bharathidasan University, Palkalai Perur -, Tiruchirappalli, 620024, Tamil Nadu, India

    Rajesh Kannan Velu

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Anahas, A.M.P., Gayathri, M., Muralitharan, G. (2013). Isolation and Characterization of Microcystin-Producing Microcystis aeruginosa MBDU 626 from a Freshwater Bloom Sample in Tamil Nadu, South India. In: Velu, R. (eds) Microbiological Research In Agroecosystem Management. Springer, India. https://doi.org/10.1007/978-81-322-1087-0_16

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