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Members of the genus Paulsenella Chatton are marine phagotrophic dinoflagellates that specifically attack marine diatoms. In this phylogenetic study, we show that Paulsenella groups with Amyloodinium ocellatum (Brown) Brown et Hovasse, Pfiesteria piscicida Steidinger et Burkholder (Dinophyceae), Pfiesteria shumwayae Glasgow et Burkholder, and the cryptoperidiniopsoids, all members of the order Peridiniales...
Cyclotella meneghiniana Kützing is one of the most commonly found and intensively studied freshwater diatom species. However, it is considered taxonomically problematic because of its unusually wide ecological range and large frustule ultrastructural variation. As part of a study of morphological and genetic variation in this morphospecies, we surveyed nucleotide variation in the hypervariable D1/D2...
Oligonucleotide probes provide rapid, easy identification of species difficult to identify by more traditional means, e.g. light microscopy. Phaeocystis is a difficult genus to identify as a unicell and thus presents a good candidate for probe development. Hybridisation using PCR products or cell lysates rather than whole cells as targets provides access to more highly variable regions of the genome,...
The systematic position of the genus Cryothecomonas has been determined from an analysis of the nuclear-encoded small subunit ribosomal RNA gene of Cryothecomonas longipes and two strains of Cryothecomonas aestivalis. Our phylogenetic trees inferred from maximum likelihood, distance and maximum parsimony methods robustly show that the genus Cryothecomonas clusters within the phylum Cercozoa, and is...
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