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Applied and Environmental Microbiology, August 2004, p. 5047-5050, Vol. 70, No. 8
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.8.5047-5050.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Cyanobacterial Protease Inhibitor Microviridin J Causes a Lethal Molting Disruption in Daphnia pulicaria

Thomas Rohrlack,1* Kirsten Christoffersen,1 Melanie Kaebernick,2 and Brett A. Neilan2

Freshwater Biological Laboratory, University of Copenhagen, DK-3400 Hillerød, Denmark,1 School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney 2052, Australia2

Received 7 January 2004/ Accepted 25 April 2004

ABSTRACT

Laboratory experiments identified microviridin J as the source of a fatal molting disruption in Daphnia species organisms feeding on Microcystis cells. The molting disruption was presumably linked to the inhibitory effect of microviridin J on daphnid proteases, suggesting that hundreds of further cyanobacterial protease inhibitors must be considered potentially toxic to zooplankton.

* Corresponding author. Mailing address: Norwegian Institute for Water Research, P.O. Box 173 Kjelsås, N-0411 Oslo, Norway. Phone: 47 2218 5318. Fax: 47 2218 5200. E-mail: Thomas.Rohrlack{at}niva.no.

Applied and Environmental Microbiology, August 2004, p. 5047-5050, Vol. 70, No. 8
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.8.5047-5050.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Semyalo, R., Rohrlack, T., Larsson, P. (2009). Growth and survival responses of a tropical Daphnia (Daphnia lumholtzi) to cell-bound microcystins. J PLANKTON RES 31: 827-835 [Abstract] [Full Text]  
  • Halstvedt, C. B., Rohrlack, T., Ptacnik, R., Edvardsen, B. (2008). On the effect of abiotic environmental factors on production of bioactive oligopeptides in field populations of Planktothrix spp. (Cyanobacteria). J PLANKTON RES 30: 607-617 [Abstract] [Full Text]  


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