First evidence for the production of cylindrospermopsin and deoxy-cylindrospermopsin by the freshwater benthic cyanobacterium, Lyngbya wollei (Farlow ex Gomont) Speziale and Dyck |
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| Authors: | Marc Seifert Glenn McGregor Geoff Eaglesham Wasantha Wickramasinghe Glen Shaw |
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| Institution: | 1. National Research Centre for Environmental Toxicology, The University of Queensland, 39 Kessels Road, Coopers Plains, Queensland 4108, Australia;2. Aquatic Ecosystems Unit, Queensland Department of Natural Resources, Mines and Water, 120 Meiers Road Indooroopilly, Queensland 4068, Australia;3. School of Integrative Biology, The University of Queensland, St. Lucia, Queensland 4072, Australia;4. Queensland Health and Scientific Services, 39 Kessels Road, Coopers Plains, Queensland 4108, Australia;5. Cooperative Research Centre for Water Quality & Treatment, PMB3 Salisbury, South Australia 5108, Australia;6. School of Public Health, Griffith University, University Drive, Meadowbrook, Queensland 4131, Australia;1. Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all''Adige, TN, Italy;2. Department of Biology, University of Florence, Via Madonna del Piano 6, 50019 Sesto Fiorentino, Firenze, Italy;3. Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, 0349 Oslo, Norway;1. Institute F.-A. Forel and Institute of Environmental Sciences University of Geneva, 10 Route de Suisse, 1290 Versoix, Switzerland;2. National Center for Environmental Health, 4770 Buford Highway NE, MS F-57, Chamblee, GA 30341, USA;3. KWR, Watercycle Research Institute, Groningenhaven 7, 3433 PE Nieuwegein, The Netherlands;4. German Federal Environment Agency, Corrensplatz 1, 14195 Berlin, Germany;1. Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Avenida Italia 3318, 11600 Montevideo, Uruguay;2. Laboratorio de Biología Computacional, Departamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, Avenida A. Navarro 3051, 11600 Montevideo, Uruguay;3. Sección Limnología, Instituto de Ecología y Ciencias Ambientales. Facultad de Ciencias. Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay;4. Physiology and Ecology Phytoplankton Group, CSIC, Uruguay;5. Laboratory of Environmental Analysis, Université de Sherbrooke, Sherbrooke, Quebec, Canada;1. School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand;2. Cawthron Institute, Private Bag 2, Nelson 7001, New Zealand;3. Department of Biological Sciences, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand |
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| Abstract: | Lyngbya wollei (Farlow ex Gomont) Speziale and Dyck is a common mat-forming benthic cyanobacterium from freshwater habitats. We found that two populations from southeast Queensland (Australia) produce the potent cyanotoxin cylindrospermopsin (CYN) and its analogue, deoxy-cylindrospermopsin (deoxy-CYN). The highest concentrations in environmental samples were 20 and 550 μg g−1 dry weight for CYN and deoxy-CYN, respectively. A sub-sample maintained in culture for over 16 months yielded concentrations of 33 and 308 μg g−1 dry weight for CYN and deoxy-CYN, respectively. The concentration of deoxy-CYN in L. wollei was 10–300 times higher than CYN, suggesting that, unlike many other CYN-producing cyanobacteria, the primary compound produced by L. wollei is deoxy-CYN. The production of CYN and deoxy-CYN by L. wollei represents a potential human health risk and an additional source of these toxins in freshwaters. This is the first report of the production of CYN and deoxy-CYN by L. wollei or any species of the Oscillatoriales. |
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| Keywords: | Australia Cyanotoxin Cyanobacterial toxin Cylindrospermopsin Deoxy-cylindrospermopsin Lyngbya wollei Toxic cyanobacteria |
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