Parduczia is a genus of karyorelict ciliates in the family Geleiidae.

Parduczia
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Alveolata
Phylum: Ciliophora
Subphylum: Postciliodesmatophora
Class: Karyorelictea
Order: Protoheterotrichida
Family: Geleiidae
Genus: Parduczia
Dragesco, 1999
Species

See text.

Parduczia species are filiform to serpentiform ciliates characterized by their giant size (1.2 to 2.5 mm on average) and their very long buccal split.[1]

The genus name[a] is a taxonomic patronym honoring the protistologist Béla Párducz (1911–1964).[3][4]

Systematics

edit

Five species are currently described in the genus Parduczia.[1]

Phylogeny

edit

Comparison and phylogenetic analysis of 18S rRNA sequences showed that Parduczia orbis is the sister group to Corlissina maricaensis. In turn, these two genera form a clade with Geleia.[5]

Alternative genetic code

edit

An alternative genetic code is used by the nuclear genome of Parduczia sp.[2] This code corresponds to the translation table 27 and involves the unusual reassignment of the three standard termination codons to sense codons:

DNA codons RNA codons This code (27) Standard code (1)
TAA UAA Gln (Q) Ter (*)
TAG UAG Gln (Q) Ter (*)
TGA UGA Ter (*) or Trp (W) Ter (*)

Notes

edit
  1. ^ In some publications, the genus name is misspelt as "Parduzcia".[2]

References

edit
  1. ^ a b Dragesco, Jean (26 November 1999). "Révision des Geléiides (Ciliophora, Karyorelictea)" (PDF). Stapfia. 66: 1–91.
  2. ^ a b Swart, Estienne Carl; Serra, Valentina; Petroni, Giulio; Nowacki, Mariusz (28 July 2016). "Genetic Codes with No Dedicated Stop Codon: Context-Dependent Translation Termination". Cell. 166 (3): 691–702. doi:10.1016/j.cell.2016.06.020. PMC 4967479. PMID 27426948.
  3. ^ Kaszab, Z. (1966). "In Memoriam Dr. Béla Párducz (1911—1964)" (PDF). Annales Historico-Naturales Musei Nationalis Hungarici. 58: 5–9.
  4. ^ Corliss, John O. (1978). "A Salute to Fifty-Four Great Microscopists of the Past: A Pictorial Footnote to the History of Protozoology. Part I.". Transactions of the American Microscopical Society. 97 (4): 419–458. doi:10.2307/3226162. ISSN 0003-0023. JSTOR 3226162. PMID 371094.
  5. ^ Silva-Neto, Inácio D.; Campello-Nunes, Pedro H.; Schlegel, Martin; Fernandes, Noemi (2015-12-01). "Description and phylogenetic position of Corlissina maricaensis gen. nov., sp. nov. (Karyorelictea, Geleiidae), a novel interstitial ciliate from Brazil, with redefinition of the family Geleiidae". International Journal of Systematic and Evolutionary Microbiology. 65 (12): 4297–4308. doi:10.1099/ijsem.0.000579. ISSN 1466-5026. PMID 26338067.