Consulta: subjectFacets:"Pseudo nitzschia"
Registros recuperados: 3
Data/hora: 11/06/2024 06:20:41

DYNAPSE - DYNamiques des efflorescences et de la toxicité des espèces phytoplanctoniques nuisibles du genre PSEudo nitzschia en région Loire Bretagne
Provedor de dados: 5
Autores: Belin, Catherine; Chapelle, Annie; Delmas, Daniel; Nezan, Elisabeth; Siano, Raffaele.
Les efflorescences de la diatomée Pseudo-nitzschia sont largement répandues sur les côtes Manche-Atlantique depuis une trentaine d’années (source Rephy). Depuis les années 2000 elles y sont parfois associées des événements toxiques du type ASP (Amnesic Shellfish Poisonning) qui perturbent grandement les pêcheries de coquillages et notamment celles de coquilles Saint Jacques. Les efflorescences et toxicités liées aux Pseudo-nitzschia sont des phénomènes en augmentation sur les côtes françaises mais aussi mondialement. Le genre Pseudo-nitzschia comprend plusieurs espèces très difficiles à identifier en routine or certaines sont toxiques et d’autres pas. Les facteurs environnementaux abiotiques et biotiques contrôlent à la fois la croissance des microalgues...
Tipo: Text
Palavras-chave: Algues toxiques; Pseudo nitzschia; Toxicité des coquillages; Pêcheries; Facteurs environnementaux.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00189/30035/28521.pdf

Development of sequence characterized amplified region markers from intersimple sequence repeat fingerprints for the molecular detection of toxic phytoplankton Alexandrium catenella (Dinophyceae) and pseudo-Nitzschia pseudodelicatissima (Bacillariophyceae) from French coastal waters
Provedor de dados: 5
Autores: Bornet, Benjamin; Antoine, Elisabeth; Francoise, Sylvaine; Marcaillou-le Baut, Claire.
Harmful algal blooms are a serious threat to shellfish farming and human health all over the world. The monitoring of harmful algae in coastal waters originally involved morphological identification through microscopic examinations, which was often difficult unless performed by specialists and even then often did not permit identification of toxic species. More recently, specific molecular markers have been used to identify specific phytoplankton species or strains. Here we report on the use of the intersimple sequence repeat (ISSR) technique to develop specific sequence characterized amplified region markers (SCAR) and to identify with these tools two toxic species in French coastal waters, the diatom Pseudo-nitzschia pseudodelicatissima (Hasle) Hasle and...
Tipo: Text
Palavras-chave: SCAR; Pseudo nitzschia; Monitoring; Molecular identification; ISSR; Alexandrium.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-780.pdf

ISSR as new markers for genetic characterization and evaluation of relationships among phytoplankton
Provedor de dados: 5
Autores: Bornet, Benjamin; Antoine, Elisabeth; Bardouil, Michele; Marcaillou-le Baut, Claire.
In order to increase the molecular tools and markers needed for the identification of phytoplankton species, the inter simple sequence repeat ( ISSR) fingerprinting was adapted to micro-algae and its use in genetic analysis was demonstrated. Twelve strains, 6 Alexandrium, 4 Pseudo-nitzschia, 1 Skeletonema and 1 Tetraselmis were analysed for the first time with ISSR amplifications. The patterns were highly polymorphic and very reproducible. The 6 primers gave 223 polymorphic markers that clearly and easily distinguished all 12 strains ( mainly toxic ones) and gave 187 polymorphic markers among the Alexandrium and the Pseudo-nitzschia species. ISSR amplifications also indicated a large occurrence of simple sequence repeat ( SSR) in phytoplankton genomes,...
Tipo: Text
Palavras-chave: Tetraselmis; Skeletonema; Pseudo nitzschia; ISSR; Genetic characterization and diversity; Fingerprints; Alexandrium.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-516.pdf