Protacanthamoeba

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Protacanthamoeba
Protacanthamoeba G-I.png
P. bohemica trophic cells and cyst
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Phylum: Amoebozoa
Class: Discosea
Order: Centramoebida
Family: Acanthamoebidae
Genus: Protacanthamoeba
Page 1981
Type species
Protacanthamoeba caledonica
Page 1972
Species

Protacanthamoeba is a genus of free-living naked amoebae of the family Acanthamoebidae described in 1981. [1] It has been found in associations with mycobacteria in drinking water networks, along with other Acanthamoebidae genera, likely allowing the replication of both environmental and pathogenic mycobacteria. [2]

Contents

Morphology

Members of Protacanthamoeba are characterized by having slender, flexible and sometimes furcate subpseudopodia originated from a broad, hyaline lobose pseudopodium, as well as having centrospheres in its interior, including a plaque-shaped centriole-like body. Their cysts lack preformed pores or opercula. [3]

Taxonomy

Protacanthamoeba contains 3 species:

Related Research Articles

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<i>Mycobacterium</i> Genus of bacteria

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<i>Cooksonia</i> Group of vascular land plants (extinct)

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<span class="mw-page-title-main">Tubulinea</span> Class of protozoans

The Tubulinea are a major grouping of Amoebozoa, including most of the more familiar amoebae genera like Amoeba, Arcella, Difflugia and Hartmannella.

<span class="mw-page-title-main">Discosea</span> Class of amoebae

Discosea is a class of Amoebozoa, consisting of naked amoebae with a flattened, discoid body shape. Members of the group do not produce tubular or subcylindrical pseudopodia, like amoebae of the class Tubulinea. When a discosean is in motion, a transparent layer called hyaloplasm forms at the leading edge of the cell. In some discoseans, short "subpseudopodia" may be extended from this hyaloplasm, but the granular contents of the cell do not flow into these, as in true pseudopodia. Discosean amoebae lack hard shells, but some, like Cochliopodium and Korotnevella secrete intricate organic scales which may cover the upper (dorsal) surface of the cell. No species have flagella or flagellated stages of life.

<i>Mycobacterium kansasii</i> Species of bacterium

Mycobacterium kansasii is a bacterium in the Mycobacterium genus. It is an environmental bacteria that causes opportunistic infections in humans, and is the one of the leading mycobacterial causes of human disease after tuberculosis and leprosy.

<span class="mw-page-title-main">Arcellinida</span> Order of Amoebozoa

Arcellinid testate amoebae or Arcellinida, Arcellacean or lobose testate amoebae are single-celled protists partially enclosed in a simple test (shell).

<i>Nuclearia</i>

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<span class="mw-page-title-main">Acanthamoebidae</span>

Acanthamoebidae is a family of single-celled eukaryotes within the group Amoebozoa.

<span class="mw-page-title-main">Leptomyxida</span> Order of protozoans

Leptomyxida is an order of Amoebozoa.

<i>Cochliopodium</i>

Cochliopodium is a Himatismenida genus.

Protacanthamoeba bohemica is a species of Acanthamoebidae.

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<i>Rhizamoeba</i> Genus of marine lobose amoebae

Rhizamoeba is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to Leptomyxa and Flabellula, and some species have been moved to Leptomyxa due to molecular data.

<i>Mayorella</i>

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<span class="mw-page-title-main">Testate amoebae</span>

Testate amoebae are a polyphyletic group of unicellular amoeboid protists, which differ from naked amoebae in the presence of a test that partially encloses the cell, with an aperture from which the pseudopodia emerge, that provides the amoeba with shelter from predators and environmental conditions.

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An amoeba, often called an amoeboid, is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting pseudopods. Amoebae do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals.

<i>Luapeleamoeba</i> Genus of naked amoebae

Luapeleamoeba is a genus of naked amoebae of the family Acanthamoebidae.

<i>Vacuolamoeba</i> Genus of naked amoebae

Vacuolamoeba is a monotypic genus of free-living discosean amoebae in the family Acanthamoebidae containing the sole species Vacuolamoeba acanthoformis, discovered, in 2016, at high-altitude soil in Tibet.

<i>Luapeleamoeba hula</i> Species of acanthamoebid amoeba

Luapeleamoeba hula is a species of acanthamoebid amoeba described in 2016, capable of producing protosteloid fruiting bodies that consist of a stalk with one spore. It was obtained from dead māmaki leaves from the Manuka Natural Area Reserve in Hawai'i. It has also been found in the Democratic Republic of Congo.

References

  1. Tice AK, Shadwick LL, Fiore-Donno AM, et al. (2016). "Expansion of the molecular and morphological diversity of Acanthamoebidae (Centramoebida, Amoebozoa) and identification of a novel life cycle type within the group". Biol Direct. 11: 69. doi:10.1186/s13062-016-0171-0. PMC   5192571 . S2CID   255980669.
  2. Delafont, Vincent; Mougari, Faïza; Cambau, Emmanuelle; Joyeux, Michel; Bouchon, Didier; Héchard, Yann; Moulin, Laurent (2014). "First Evidence of Amoebae–Mycobacteria Association in Drinking Water Network". Environ. Sci. Technol. 48 (20): 11872–11882. doi:10.1021/es5036255. PMID   25247827.
  3. 1 2 3 Page, Frederick C. (1981). "A Light- and Electron-Microscopical Study of Protacanthamoeba caledonica n. sp., Type-Species of Protacanthamoeba n. g. (Amoebida, Acanthamoebidae)". Journal of Eukaryotic Microbiology. 28 (1): 70–78. doi:10.1111/j.1550-7408.1981.tb02807.x.
  4. Dykova I, Veverkova-Fialova M, Fiala I, Dvorakova H (2005). "Protoacanthamoeba bohemica sp. n., isolated from the liver of tench Tinca tinca (Linnaeus, 1758)". Acta Protozool. 44: 369–376.