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J Biosci Bioeng. 2014 Mar;117(3):330-2. doi: 10.1016/j.jbiosc.2013.08.003. Epub 2013 Aug 30.

Detoxification of microcystin-LR in water by Portulaca oleracea cv.

Author information

  • 1Department of Environmental Science, Faculty of Science, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan.
  • 2The Kansai Electric Power Co., Environmental Research Center, Keihanna-Plaza 12F, 1-7 Hikaridai, Seikacho, Sourakugun, Kyoto 619-0237, Japan.
  • 3The Kansai Electric Power Co., Environmental Research Center, Keihanna-Plaza 12F, 1-7 Hikaridai, Seikacho, Sourakugun, Kyoto 619-0237, Japan. Electronic address: miyasaka.hitoshi@a4.kepco.co.jp.

Abstract

Microcystin-LR (0.02 μg/ml) in the hydroculture medium of Portulaca oleracea cv., became below the detection level (<0.0001 μg/ml) by HPLC analysis after 7 days. The toxicity of microcystin estimated with protein phosphatase inhibition assay, however, remained at 37% of the initial level, indicating that microcystin-LR was transformed by P. oleracea cv. into unknown compound(s) of lower toxicity.

Copyright © 2013 The Society for Biotechnology, Japan. Published by Elsevier B.V. All rights reserved.

KEYWORDS:

Cyanobacterial toxin; Hydroculture; Microcystin; Microcystin-LR; Phytoremediation; Portulaca oleracea cv.; Protein phosphatase inhibition assay

[PubMed - indexed for MEDLINE]
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