Heterotrophic Amoebae, Flagellates and Heliozoa from the Tvärminne Area, Gulf of Finland, in 1988–1990

Vørs, Naja

doi:10.1080/00785326.1992.10429930

Cited by 187 publications

(119 citation statements)

References 79 publications

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“…The phylogenetic tree shows that the sequence FV18- and Cruzella), all of which are more or less well-known and described groups of organisms (Breunig et al, 1993;Eyden, 1977;Frolov & Malysheva, 2002;Swale, 1973;Vørs, 1992). However, according to the phylogenetic analyses, the sequence clade with the sequence FV18-8TS cannot be assigned to any one of these groups, and represents a novel, strongly supported (bootstrap 97 %) taxonomic unit.…”

Section: Phylogenymentioning

confidence: 99%

Cellular identity of an 18S rRNA gene sequence clade within the class Kinetoplastea: the novel genus Actuariola gen. nov. (Neobodonida) with description of the type species Actuariola framvarensis sp. nov.

Stoeck

Schwarz

Boenigk

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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Environmental molecular surveys of microbial diversity have uncovered a vast number of novel taxonomic units in the eukaryotic tree of life that are exclusively known by their small-subunit (SSU) rRNA gene signatures. In this study, we reveal the cellular and taxonomic identity of a novel eukaryote SSU rRNA gene sequence clade within the Kinetoplastea. Kinetoplastea are ubiquitously distributed flagellated protists of high ecological and medical importance. We isolated an organism from the oxic-anoxic interface of the anoxic Framvaren Fjord (Norway), which branches within an unidentified kinetoplastean sequence clade. Ultrastructural studies revealed a typical cellular organization that characterized the flagellated isolate as a member of the order Neobodonida Vickerman 2004, which contains five genera. The isolate differed in several distinctive characters from Dimastigella, Cruzella, Rhynchobodo and Rhynchomonas. The arrangement of the microtubular rod that supports the apical cytostome and the cytopharynx differed from the diagnosis of the fifth described genus (Neobodo Vickerman 2004) within the order Neobodonida. On the basis of both molecular and microscopical data, a novel genus within the order Neobodonida, Actuariola gen. nov., is proposed. Here, we characterize its type species, Actuariola framvarensis sp. nov., and provide an in situ tool to access the organism in nature and study its ecology.

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Section: Phylogenymentioning

confidence: 99%

Cellular identity of an 18S rRNA gene sequence clade within the class Kinetoplastea: the novel genus Actuariola gen. nov. (Neobodonida) with description of the type species Actuariola framvarensis sp. nov.

Stoeck

Schwarz

Boenigk

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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“…A second, larger species of Telonema, 10-20 mm in diameter and with longer, unequal flagella, was detected by Vørs (1992a) but mentioned only briefly and with reference to unpublished material by Thomsen. Thomsen (1992) made a provisional description of 'Telonema inedit.…”

Section: Introductionmentioning

confidence: 99%

“…subtilis has been observed in the North Atlantic (Throndsen, 1969;Patterson et al, 1993), from Arctic and Antarctic marine waters (Vørs, 1992a, b), the Mediterranean (Griessmann, 1913;Hollande & Cachon, 1950;Massana et al, 2004), the Baltic Sea (Vørs, 1992a), off the shores of Japan (Throndsen, 1983), in the equatorial Pacific (Vørs et al, 1995) and at Sydney, Australia (Tong et al, 1998). The larger species, 'T.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the fact that the genus Telonema is one of the most widely reported colourless marine flagellates (eurythermal and euryhaline according to its distribution; Vørs, 1992a), very little structural information and genetic data are available for phylogenetic investigations of the genus. Nevertheless, attempts have been made to place Telonema into the phylum Opalozoa by Cavalier-Smith (1993a) and later in Neomonada and the subphylum Isomita (Cavalier-Smith, 1997).…”

Section: Introductionmentioning

confidence: 99%

“…The first electron micrograph of a thin section of T. subtilis, where the particular identity of the genus was recognized, came with the admirable investigation of Vørs (1992a) of samples collected from the Tvärminne archipelago, Finland. Sections of similar cells in material collected from nature, but not explicitly identified, are present in publications by Sieburth et al (1988) and Nagasaki et al (1993).…”

Section: Introductionmentioning

confidence: 99%

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Telonema antarcticum sp. nov., a common marine phagotrophic flagellate

Klaveness

Shalchian-Tabrizi

Thomsen

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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Telonema is a widely distributed group of phagotrophic flagellates with two known members. In this study, the structural identity and molecular phylogeny of Telonema antarcticum was investigated and a valid description is proposed. Molecular phylogeny was studied using small-subunit rRNA (SSU rRNA) gene sequences. The pear-shaped cell had two subequal flagella that emerged laterally on the truncated antapical tail. One flagellum had tripartite hairs. The cell was naked, but had subsurface vesicles containing angular paracrystalline bodies of an unknown nature. A unique complex cytoskeletal structure, the subcortical lamina, was found to be an important functional and taxonomic feature of the genus. Telonema has an antero-ventral depression where food particles are ingested and then transferred to a conspicuous anterior food vacuole. The molecular phylogeny inferred from the SSU rRNA gene sequence suggested that Telonema represents an isolated and deep branch among the tubulocristate protists.

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The Quantitative Occurrence of Different Taxa of Heterotrophic Flagellates in Southampton Water, U.K.

Tong

Sleigh

2000

Estuarine, Coastal and Shelf Science

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Heterotrophic Amoebae, Flagellates and Heliozoa from the Tvärminne Area, Gulf of Finland, in 1988–1990

Cited by 187 publications

References 79 publications

Cellular identity of an 18S rRNA gene sequence clade within the class Kinetoplastea: the novel genus Actuariola gen. nov. (Neobodonida) with description of the type species Actuariola framvarensis sp. nov.

Cellular identity of an 18S rRNA gene sequence clade within the class Kinetoplastea: the novel genus Actuariola gen. nov. (Neobodonida) with description of the type species Actuariola framvarensis sp. nov.

Telonema antarcticum sp. nov., a common marine phagotrophic flagellate

The Quantitative Occurrence of Different Taxa of Heterotrophic Flagellates in Southampton Water, U.K.

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