alexa Warm Seawater Microalgae: Growth and Toxic Profile of <i>Ostreopsis</i> Spp. from European Coasts | OMICS International | Abstract
ISSN: 2572-3103

Journal of Oceanography and Marine Research
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Research Article

Warm Seawater Microalgae: Growth and Toxic Profile of Ostreopsis Spp. from European Coasts

Luis M. Botana1*, Andrea Fernández-Araujo1, Amparo Alfonso1, Jose M. Antelo2, Tania Davila2, Carmen Alfonso2 and Panagiota Katikou3
1Dept. Farmacología, Facultad de Veterinaria, 27002 Lugo, Spain
2Cifga Laboratorio, Plaza Santo Domingo, 20, 5ª planta, 27001 Lugo, Spain
3National Reference Laboratory of Marine Biotoxins, Institute of Food Hygiene, Greece
Corresponding Author : Luis M. Botana
Department Farmacología
Facultad de Veterinaria, Spain
Tel: 34 982 822 233
Fax: 34 982 822 233
E-mail:[email protected]
Received May 25, 2013; Accepted July 17, 2013; Published July 19, 2013
Citation: Botana LM, Fernández-Araujo A, Alfonso A, Antelo JM, Davila T, et al. (2013) Warm Seawater Microalgae: Growth and Toxic Profile of Ostreopsis Spp. From European Costs. Oceanography 1:104. doi: 10.4172/2332-2632.1000104
Copyright: © 2013 Botana LM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Palytoxin (PLTX) is a complex marine toxin synthesized by the soft coral Palythoa toxica and by species of the benthic dinoflagellate Ostreopsis spp. The toxin binds to the active Na, K-ATPase pump in the cellular membrane. This interaction changes the protein conformation and produces a non-specific cation channel. Using the Fluorescent Polarization (FP) technique to quantify the PLTX concentration, the production of PLTX-like products was measured in several cultures of Ostreopsis ovata and Ostreosis siamensis. The cultures were grown under different conditions to study the optimal parameters to grow and to produce toxins. Serious difficulties were found to quantify the number of cells at the end of the exponential phase. In order to avoid any toxin loss, the weight of the pellet obtained after careful filtration was used as reliable parameter to calculate the growth of the cultures. Also, this parameter was used to refer the results of toxin concentration. In addition the toxicity of the cultures was measured by mouse bioassay. In these conditions, the optimal parameters to grow these strains are 24°C, 37‰ of salinity and 16:8 h light-dark photoperiod. Within these parameters high amounts of PLTX-like compounds with different toxin profiles were obtained.

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