Blastocrithidia
| Blastocrithidia | |
|---|---|
| |
| A species of Blastocrithidia, B. papi (vertical scale bar = 10 μm).[2] | |
| Scientific classification Edit this classification | |
| Domain: | Eukaryota |
| Clade: | Discoba |
| Phylum: | Euglenozoa |
| Class: | Kinetoplastea |
| Order: | Trypanosomatida |
| Family: | Trypanosomatidae |
| Genus: | Blastocrithidia Laird 1959 [1] |
| Type species | |
| Blastocrithidia gerridis (Patton 1908) Laird 1959
| |
| Species | |
|
See text | |
Blastocrithidia is a genus of parasitic flagellate protist belonging to the family Trypanosomatidae.[1] It is a monoxenous parasite of heteropteran insects,[3] mainly inhabiting their hindgut and glands.[4]
Characteristics
[edit | edit source]In addition to Blastocrithidia, one-host trypanosomatids from hemipteran and dipteran insects have been traditionally placed in genera Crithidia, Leptomonas, Herpetomonas, Rhynchoidomonas, and Wallaceina.[5][6] Blastocrithidia is characterized by epimastigote morphological forms, whereas opisthomastigotes and endomastigotes are exclusive features of the genera Herpetomonas and Wallaceina, respectively.[6] Blastocrithidia is also able to produce resistant cysts.[7]
Systematics
[edit | edit source]The etymology of the genus name Blastocrithidia derives from the two Ancient Greek words βλαστός (blastós), meaning "sprout, scion, child or descendant", and κριθίδιον (krithídion), meaning "small grain of barley".[8][9]
The genus includes the following species.
- Blastocrithidia caliroae Lipa, Carl & Valentine 1977
- Blastocrithidia cyrtomeni Caicedo et al. 2011
- Blastocrithidia euschisti Hanson & McGhee
- Blastocrithidia familiaris Tieszen et al. 1986
- Blastocrithidia gerridis (Patton 1908) Laird 1959
- Blastocrithidia largi Maslov and Lukes 2010
- Blastocrithidia leptocoridis (McCulloch 1915)
- Blastocrithidia miridarum Podlipaev & Frolov 1987
- Blastocrithidia papi Frolov and Kostygov, 2016
- Blastocrithidia raabei Lipa 1966
- Blastocrithidia triatomae Cerisola et al. 1971
- Blastocrithidia vagoi Tuzet & Laporte 1965
- Blastocrithidia nonstop Votýpka & Lukeš, sp. nov.
Genomics
[edit | edit source]Genetic code
[edit | edit source]Blastocrithidia uses in its nuclear genome an alternative genetic code characterized by all three canonical stop codons reassigned to sense codons.[10]
| Genetic code | Translation table |
DNA codon | RNA codon | Conditional translation |
Standard translation | |||
|---|---|---|---|---|---|---|---|---|
| Blastocrithidia nuclear | 31 | TAA |
UAA |
Ter (*) |
or | Glu (E) |
Ter (*)
| |
TAG |
UAG |
Ter (*) |
or | Glu (E) |
Ter (*)
| |||
TGA |
UGA |
Trp (W) |
Ter (*)
| |||||
| Amino acids biochemical properties | nonpolar | polar | basic | acidic | Termination: stop codon |
References
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