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Título: | Characterization of Ostreopsis and Coolia (dinophyceae) isolates in the Western Mediterranean Sea based on morphology, toxicity and internal transcribed spacer 5.8s rDNA sequences |
Autor: | Penna, Antonella; Vila, Magda CSIC ORCID ; Fraga, Santiago; Giacobbe, Maria Grazia; Andreoni, Francesca; Riobó, Pilar CSIC ORCID; Vernesi, Cristiano | Palabras clave: | Coolia Dinoflagellate Internal transcribed spacer Morphology Ostreopsis Palytoxin Phylogeny ITS |
Fecha de publicación: | feb-2005 | Editor: | Phycological Society of America | Citación: | Journal of Phycology 41(1): 212-225 (2005) | Resumen: | Several isolates of epiphytic dinoflagellates belonging to the genera Ostreopsis Schmidt and Coolia Meunier from the western Mediterranean Sea were examined by LM and EM, toxicity assays, and internal transcribed spacer (ITS) regions of nuclear rDNA, and 5.8S rDNA were sequenced. Morphological comparisons based on the analyses of cell shape, size, thecal plates, and surface ornamentation revealed two distinct species in the western Mediterranean: O. cf. siamensis Schmidt from the Catalan, Andalusian, and Sicilian coasts and O. ovata Fukuyo from the Ligurian coast, southern Tyrrhenian Sea, and Balearic Islands. Both Ostreopsis species were toxic; however, no differences in toxicity were detected between the two Ostreopsis species. Coolia monotis Meunier was nontoxic. The morphological studies were supported by phylogenetic analyses; all western Mediterranean isolates of O. cf. siamensis showed ITS and 5.8S rDNA sequences identical to each other and so did those of O. ovata, whereas high genetic diversity was detected between the western Mediterranean and Asian isolates of O. ovata. The nucleotide sequence analyses of the C. monotis strains showed that all C. monotis isolates from Europe formed a homogeneous clade. Further, the genetic diversity was high between the European and Asian C. monotis isolates. In this study, genetic markers combined with morphology and toxicity analyses was useful in the taxonomic and phylogenetic studies of the Ostreopsidaceae in a temperate area | Descripción: | 14 pages, 8 figures, 5 tables | Versión del editor: | https://doi.org/10.1111/J.1529-8817.2005.04011.x | URI: | 10261/129699 | DOI: | 10.1111/J.1529-8817.2005.04011.x | Identificadores: | issn: 0022-3646 e-issn: 1529-8817 |
Aparece en las colecciones: | (ICM) Artículos (IIM) Artículos |
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