Genetic Diversity and Molecular Detection of Three Toxic Dinoflagellate Genera (Alexandrium, Dinophysis, and Karenia) from French Coasts. Guillou, L., Nézan, E., Cueff, V., Erard-Le Denn, E., Cambon-Bonavita, M., Gentien, P., & Barbier, G. Protist, 153(3):223–238, September, 2002. Number: 3![Genetic Diversity and Molecular Detection of Three Toxic Dinoflagellate Genera (Alexandrium, Dinophysis, and Karenia) from French Coasts [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Summary The objectives of this study were 1) to study the genetic diversity of the Alexandrium, Dinophysis and Karenia genera along the French coasts in order to design probes targeting specific DNA regions, and 2) to apply PCR-based detection to detect these three toxic dinoflagellate genera in natural samples. Genetic diversity of these toxic taxa was first studied from either cultures or cells isolated from Lugol-fixed field samples. By this way, partial sequences of the large ribosomal subunit (LSU rDNA) including the variable domains D1 and D2 of A. minutum, Alexandrium species inside thetamarensis complex, the D. acuminata complex and K. mikimotoi were obtained. Next, specific primers were designed for a selection of toxic algae and used during semi-nested PCR detection. This method was tested over a 3-month period on water samples from the Bay of Concarneau (Brittany, France) and on sediment from the Antifer harbor (The English Channel, France). Specificity and sensitivity of this molecular detection were evaluated using the occurrence of target taxa reported by the IFREMER (Institut Français de Recherche pour l'Exploitation de la Mer) monitoring network based on conventional microscopic examination. This work presents the first results obtained on the biogeographical distribution of genotypes of these three toxic genera along the French coasts.
@article{guillou_genetic_2002,
title = {Genetic {Diversity} and {Molecular} {Detection} of {Three} {Toxic} {Dinoflagellate} {Genera} ({Alexandrium}, {Dinophysis}, and {Karenia}) from {French} {Coasts}},
volume = {153},
issn = {1434-4610},
url = {http://www.sciencedirect.com/science/article/pii/S1434461004701005},
doi = {10.1078/1434-4610-00100},
abstract = {Summary
The objectives of this study were 1) to study the genetic diversity of the Alexandrium, Dinophysis and Karenia genera along the French coasts in order to design probes targeting specific DNA regions, and 2) to apply PCR-based detection to detect these three toxic dinoflagellate genera in natural samples. Genetic diversity of these toxic taxa was first studied from either cultures or cells isolated from Lugol-fixed field samples. By this way, partial sequences of the large ribosomal subunit (LSU rDNA) including the variable domains D1 and D2 of A. minutum, Alexandrium species inside thetamarensis complex, the D. acuminata complex and K. mikimotoi were obtained. Next, specific primers were designed for a selection of toxic algae and used during semi-nested PCR detection. This method was tested over a 3-month period on water samples from the Bay of Concarneau (Brittany, France) and on sediment from the Antifer harbor (The English Channel, France). Specificity and sensitivity of this molecular detection were evaluated using the occurrence of target taxa reported by the IFREMER (Institut Français de Recherche pour l'Exploitation de la Mer) monitoring network based on conventional microscopic examination. This work presents the first results obtained on the biogeographical distribution of genotypes of these three toxic genera along the French coasts.},
number = {3},
urldate = {2019-04-16},
journal = {Protist},
author = {Guillou, Laure and Nézan, Elisabeth and Cueff, Valérie and Erard-Le Denn, Evelyne and Cambon-Bonavita, Marie-Anne and Gentien, Patrick and Barbier, Georges},
month = sep,
year = {2002},
note = {Number: 3},
keywords = {Alexandrium, Dinophyceae, Dinophysis, PCR-based detection, Toxic dinoflagellates},
pages = {223--238}
}
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Genetic diversity of these toxic taxa was first studied from either cultures or cells isolated from Lugol-fixed field samples. By this way, partial sequences of the large ribosomal subunit (LSU rDNA) including the variable domains D1 and D2 of A. minutum, Alexandrium species inside thetamarensis complex, the D. acuminata complex and K. mikimotoi were obtained. Next, specific primers were designed for a selection of toxic algae and used during semi-nested PCR detection. This method was tested over a 3-month period on water samples from the Bay of Concarneau (Brittany, France) and on sediment from the Antifer harbor (The English Channel, France). Specificity and sensitivity of this molecular detection were evaluated using the occurrence of target taxa reported by the IFREMER (Institut Français de Recherche pour l'Exploitation de la Mer) monitoring network based on conventional microscopic examination. 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