Paracercomonadidae

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Paracercomonadidae
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Phylum: Cercozoa
Superclass: Ventrifilosa
Class: Sarcomonadea
Subclass: Paracercomonada
Cavalier-Smith, 2018 [1]
Order: Paracercomonadida
Cavalier-Smith, 2018
Family: Paracercomonadidae
Cavalier-Smith, 2012
Genera

The paracercomonads are a group of cercozoan protists. [2] Taxonomically, they comprise the family Paracercomonadidae, order Paracercomonadida and subclass Paracercomonada. Due to their morphological similarities to the cercomonads, members of this family were grouped with Cercomonas and similar taxa from the beginning. However, their similarities are due to convergent evolution. [1]

Classification

There are currently 5 genera of paracercomonads: [1]

Related Research Articles

<span class="mw-page-title-main">Cercozoa</span> Group of single-celled organisms

Cercozoa is a phylum of diverse single-celled eukaryotes. They lack shared morphological characteristics at the microscopic level, and are instead united by molecular phylogenies of rRNA and actin or polyubiquitin. They were the first major eukaryotic group to be recognized mainly through molecular phylogenies. They are the natural predators of many species of bacteria. They are closely related to the phylum Retaria, comprising amoeboids that usually have complex shells, and together form a supergroup called Rhizaria.

<span class="mw-page-title-main">Cercomonad</span> Order of single-celled organisms

Cercomonads are small amoeboflagellates, widespread in aqueous habitats and common in soils.

<span class="mw-page-title-main">Monadofilosa</span> Group of protists

Monadofilosa is a grouping of Cercozoa. These organisms are single-celled amoeboid protists.

<span class="mw-page-title-main">Imbricatea</span> Class of single-celled organisms

Imbricatea is a class of Rhizaria characterised by silica scales. It is sometimes described as "Imbricatea/Silicofilosea", due to the similarity of those two groupings. Imbricatea is divided into the orders Euglyphida and Thaumatomonadida.

<span class="mw-page-title-main">Bigyra</span> Phylum of single-celled organisms

Bigyra is a phylum of microscopic eukaryotes that are found at the base of the Stramenopiles clade. It includes three well-known heterotrophic groups Bicosoecida, Opalinata and Labyrinthulomycetes, as well as several small clades initially discovered through environmental DNA samples: Nanomonadea, Placididea, Opalomonadea and Eogyrea. The classification of Bigyra has changed several times since its origin, and its monophyly remains unresolved.

<span class="mw-page-title-main">Sarcomonadea</span> Class of flagellate protists

The sarcomonads or class Sarcomonadea are a group of amoeboid biciliate protists in the phylum Cercozoa. They are characterized by a propensity to move through gliding on their posterior cilium or through filopodia, a lack of scales or external theca, a soft cell surface without obvious cortical filamentous or membranous skeleton, two cilia without scales or hairs, tubular mitochondrial cristae, near-spherical extrusomes, and a microbody attached to the nucleus.

Paracercomonas is a genus of rhizaria.

Proleptomonas is a genus of coprophilic protists, containing the single species Proleptomonas faecicola. It belongs to the phylum Cercozoa, although it was previously considered the only free-living kinetoplastid. It is the only member of family Proleptomonadidae.

<i>Thaumatomastix</i> Genus of single-celled organisms

Thaumatomastix is a protist genus of the order Thaumatomonadida, within the phylum Cercozoa and the class Imbricatea. Its species are aquatic, feeding on algae and appearing in waters of a wide range of temperatures and salinities, and are 15-50 micrometers long. They can interchange between flagellated and amoeboid forms, and are notable for being covered in both spiny and flattened siliceous scales.

<i>Katabia</i> Genus of heterotrophic protists

Katabia is a genus of soil-dwelling heterotrophic flagellate cercozoans containing the single species Katabia gromovi, and the only member of family Katabiidae.

<i>Parvilucifera</i> Genus of single-celled organisms

Parvilucifera is a genus of marine alveolates that behave as endoparasites of dinoflagellates. It was described in 1999 by biologists Fredrik Norén and Øjvind Moestrup, who identified the genus among collections of Dinophysis dinoflagellates off the coast of Sweden. Initially mistaken for products of sexual reproduction, the round bodies found within these collections were eventually recognized as sporangia, spherical structures that generate zoospores of a parasitic protist. This organism was later identified as P. infectans, the type species. The examination of this organism and its close genetic relationship to Perkinsus led to the creation of the Perkinsozoa phylum within the Alveolata group.

<span class="mw-page-title-main">Taxonomy of Protista</span> Classification of eukaryotes

A protist is any eukaryotic organism that is not an animal, plant, or fungus. The protists do not form a natural group, or clade, since they exclude certain eukaryotes with whom they share a common ancestor; but, like algae or invertebrates, the grouping is used for convenience. In some systems of biological classification, such as the popular five-kingdom scheme proposed by Robert Whittaker in 1969, the protists make up a kingdom called Protista, composed of "organisms which are unicellular or unicellular-colonial and which form no tissues". In the 21st century, the classification shifted toward a two-kingdom system of protists: Chromista and Protozoa.

Leucodictyids are heterotrophic amoeboid protists that comprise the order Leucodictyida in the phylum Cercozoa.

Neocercomonas is a protist genus of the order Cercomonadida. It consists of single-celled bacteriophagous organisms that usually live on or nearby terrestrial plants, both above and belowground. Species are biflagellate and may grow up to 60 micrometers long, with a trailing tail-like mass of protoplasm at their posterior end and a pair of roots connecting their posterior flagellum to the cytoskeleton.

<span class="mw-page-title-main">Ventrifilosa</span> Superclass of protists

Ventrifilosa is a highly diverse group of phagotrophic protists that glide through their flagella and emit filose pseudopods from their ventral side for feeding. Because of their mixture of amoeba and flagellate characteristics, they are amoeboflagellates. Members of this group are the Imbricatea, Sarcomonadea and Thecofilosea.

Cryptofilida is an order of small heterotrophic protists in the phylum Cercozoa. They are filose amoebae that lack cilia and gliding, and are instead characterized by movement through branching or unbranched granular filopodia that are appressed to the substrate during their feeding.

Massisteriidae is a family of granofilosean protists within the phylum Cercozoa.

<span class="mw-page-title-main">Glissomonadida</span> Order of protists

The glissomonads are a group of bacterivorous gliding flagellated protists that compose the order Glissomonadida, in the amoeboflagellate phylum Cercozoa. They comprise a vast, largely undescribed diversity of soil and freshwater organisms. They are the sister group to cercomonads; the two orders form a solid clade of gliding soil-dwelling flagellates called Pediglissa.

Pediglissa is a subclass of phagotrophic protists that inhabit soil or freshwater habitats. They were defined in 2018 according to phylogenetic analyses that showed a clade containing the orders Cercomonadida and Glissomonadida. They're the sister group of Paracercomonadida.

<span class="mw-page-title-main">Amoeboflagellate</span> Cellular body type

An amoeboflagellate is any eukaryotic organism capable of behaving as an amoeba and as a flagellate at some point during their life cycle. Amoeboflagellates present both pseudopodia and at least one flagellum, often simultaneously.

References

  1. 1 2 3 Cavalier-Smith, Thomas; Chao, Ema E.; Lewis, Rhodri (April 2018). "Multigene phylogeny and cell evolution of chromist infrakingdom Rhizaria: contrasting cell organisation of sister phyla Cercozoa and Retaria". Protoplasma. 255 (5): 1517–1574. doi:10.1007/s00709-018-1241-1. PMC   6133090 . PMID   29666938.
  2. Cavalier-Smith T, Karpov SA (2012). "Paracercomonas Kinetid Ultrastructure, Origins of the Body Plan of Cercomonadida, and Cytoskeleton Evolution in Cercozoa". Protist. 163 (1): 47–75. doi:10.1016/j.protis.2011.06.004. ISSN   1434-4610. PMID   21839678.
  3. 1 2 3 Brabender M, Kiss AK, Domonell A, Nitsche F, Arndt H (2012). "Phylogenetic and Morphological Diversity of Novel Soil Cercomonad Species with a Description of Two New Genera (Nucleocercomonas and Metabolomonas)". Protist. 163 (4): 495–528. doi:10.1016/j.protis.2012.02.002. ISSN   1434-4610. PMID   22541864.
  4. Karpov SA, Bass D, Mylnikov AP, Cavalier-Smith T (2006). "Molecular Phylogeny of Cercomonadidae and Kinetid Patterns of Cercomonas and Eocercomonas gen. nov. (Cercomonadida, Cercozoa)". Protist. 157 (2): 125–158. doi:10.1016/j.protis.2006.01.001. ISSN   1434-4610. PMID   16647880.
  5. Braithwaite KS (2013), "Innovative approaches to identifying the cause of chlorotic streak and new management strategies: final report 2013/357", Sugar Research Australia