Parabasalia

Ivan Cepicka, Michael F. Dolan, Gillian Gile

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

The Parabasalia are a clade of single-celled, anaerobic flagellates that are mainly obligate symbionts or parasites of insects and vertebrates. The group includes the common and widespread human sexually transmitted species Trichomonas vaginalis. Many species are found exclusively in the guts of termites and the wood-feeding roach Cryptocercus, where they contribute to wood digestion as part of a complex microbial community that sustains the insects. These insect symbionts often harbor an extensive and diverse assortment of ecto- and endo-symbionts. The Parabasalia are characterized by a parabasal body (Golgi complex supported by a parabasal fiber), which is associated with the flagellar apparatus. Their mitochondria have evolved into hydrogenosomes, double-membrane-bounded organelles that derive energy from the breakdown of pyruvate to acetate, CO2, and H2. They vary in size from the minute Tricercomitus, which is only a few microns long, to the half-a-millimeter-long Mastotermes gut symbiont Mixotricha paradoxa. Historically, the Parabasalia have been treated as two groups: The smaller, simpler "trichomonads" which bear up to six flagella and the typically much larger, multiflagellate "hypermastigotes." Ultrastructural and molecular evidence have shown that together these groups form a monophyletic Parabasalia, and though neither "trichomonads" nor "hypermastigotes" are monophyletic, they continue to be useful as descriptive terms.

Original languageEnglish (US)
Title of host publicationHandbook of the Protists
Subtitle of host publicationSecond Edition
PublisherSpringer International Publishing
Pages1175-1218
Number of pages44
ISBN (Electronic)9783319281490
ISBN (Print)9783319281476
DOIs
StatePublished - Sep 1 2017

Fingerprint

Parabasalidea
Hypermastigia
symbionts
Insects
Trichomonadida
insects
Mastotermes
Isoptera
Trichomonas vaginalis
Cryptocercus
digestive system
Flagella
Golgi Apparatus
Pyruvic Acid
Organelles
Vertebrates
Digestion
Blattodea
Mitochondria
Golgi apparatus

Keywords

  • Anaerobic protists
  • Bacterial symbionts
  • Hydrogenosomes
  • Hypermastigotes
  • Karyomastigont
  • Parabasal body
  • Parasitic protozoa
  • Termite gut flagellates
  • Trichomonas
  • Trichonympha

ASJC Scopus subject areas

  • Immunology and Microbiology(all)
  • Medicine(all)
  • Agricultural and Biological Sciences(all)

Cite this

Cepicka, I., Dolan, M. F., & Gile, G. (2017). Parabasalia. In Handbook of the Protists: Second Edition (pp. 1175-1218). Springer International Publishing. https://doi.org/10.1007/978-3-319-28149-0_9

Parabasalia. / Cepicka, Ivan; Dolan, Michael F.; Gile, Gillian.

Handbook of the Protists: Second Edition. Springer International Publishing, 2017. p. 1175-1218.

Research output: Chapter in Book/Report/Conference proceedingChapter

Cepicka, I, Dolan, MF & Gile, G 2017, Parabasalia. in Handbook of the Protists: Second Edition. Springer International Publishing, pp. 1175-1218. https://doi.org/10.1007/978-3-319-28149-0_9
Cepicka I, Dolan MF, Gile G. Parabasalia. In Handbook of the Protists: Second Edition. Springer International Publishing. 2017. p. 1175-1218 https://doi.org/10.1007/978-3-319-28149-0_9
Cepicka, Ivan ; Dolan, Michael F. ; Gile, Gillian. / Parabasalia. Handbook of the Protists: Second Edition. Springer International Publishing, 2017. pp. 1175-1218
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