Plagiopylida

Plagiopylida
Scientific classification
Domain:	Eukaryota
Clade:	Diaphoretickes
Clade:	SAR
Clade:	Alveolata
Phylum:	Ciliophora
Subphylum:	Intramacronucleata
Class:	Plagiopylea Small & Lynn, 1985
Order:	Plagiopylida Jankowski, 1978[1]
Typical families
Plagiopylidae Sonderiidae

The plagiopylids are a small order of ciliates, including a few forms common in anaerobic habitats.

The body cilia are dense, and arise from monokinetids with an entirely unique ultrastructure; one or two rows of dikinetids run into the oral cavity, which takes the form of a groove, with a deep tube lined by oral cilia leading to the mouth. The order was introduced by Eugen Small and Denis Lynn in 1985, who treated it as a subclass of Oligohymenophorea. Since then they tend to be treated as an independent class, possibly affiliated with the Colpodea. Class Plagiopylea is divided into two clades:[2] one contains members of the order Plagiopylida (like Plagiopyla frontata and Trimyema compressum) and the second clade contains plagiopylean ciliate associated with denitrifying obligate endosymbiont Candidatus Azoamicus ciliaticola.[3]

References

1. Lynn DH (2008-06-24). The Ciliated Protozoa: Characterization, Classification, and Guide to the Literature (3rd ed.). Springer. p. 409. ISBN 978-1-4020-8239-9.
2. Boscaro V, Santoferrara LF, Zhang Q, Gentekaki E, Syberg-Olsen MJ, Del Campo J, Keeling PJ (June 2018). "EukRef-Ciliophora: a manually curated, phylogeny-based database of small subunit rRNA gene sequences of ciliates". Environmental Microbiology. 20 (6): 2218–2230. doi:10.1111/1462-2920.14264. PMID 29727060. S2CID 19135660.
3. Graf JS, Schorn S, Kitzinger K, Ahmerkamp S, Woehle C, Huettel B, et al. (March 2021). "Anaerobic endosymbiont generates energy for ciliate host by denitrification". Nature. 591 (7850): 445–450. Bibcode:2021Natur.591..445G. doi:10.1038/s41586-021-03297-6. PMC 7969357. PMID 33658719.

Further reading

• Xu Y, Shao C, Miao M, Song W (January 2013). "Redescription of Parasonderia vestita (Kahl, 1928) comb. nov. (Ciliophora, Plagiopylida), with notes on its phylogeny based on SSU rRNA gene". European Journal of Protistology. 49 (1): 106–13. doi:10.1016/j.ejop.2012.03.001. PMID 22771178.
• Modeo L, Fokin SI, Boscaro V, Andreoli I, Ferrantini F, Rosati G, et al. (February 2013). "Morphology, ultrastructure, and molecular phylogeny of the ciliate Sonderia vorax with insights into the systematics of order Plagiopylida". BMC Microbiology. 13 (40): 40. doi:10.1186/1471-2180-13-40. PMC 3626617. PMID 23418998.