Parduczia
Genus of protists in the ciliates phylum
From Wikipedia, the free encyclopedia
Parduczia is a genus of karyorelict ciliates in the family Geleiidae.
| Parduczia | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Supergroup: | 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
Five species are currently described in the genus Parduczia.[1]
- Parduczia arcachonense (Nouzarède, 1965) Dragesco, 1999
- Parduczia filiformis (Nouzarède, 1977) Dragesco, 1999
- Parduczia martinicense (Nouzarède, 1977) Dragesco, 1999
- Parduczia murmanica (Raikov, 1962) Dragesco, 1999
- Parduczia orbis (Fauré-Fremiet, 1950) Dragesco, 1999 is the type species of the genus.
Phylogeny
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
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 (*) | |