Nucleariida
| Nucleariids | |
|---|---|
 | |
| Nuclearia thermophila | |
| Scientific classification | |
| Domain: | Eukarya |
| (unranked): | Opisthokonta |
| Class: | Cristidiscoidea |
| Order: | Nucleariida |
| Genera | |
Nucleariida is a group of amoebae[1] with filose pseudopods, known mostly from soils and freshwater. They are distinguished from the superficially similar vampyrellids mainly by having mitochondria with discoid cristae.
Classification
Nucleariids are opisthokonts,[2] the group which includes animals, fungi and several smaller groups. Several studies place the nucleariids as a sister group to the fungi.[3][4]
The genera Rabdiophrys, Pinaciophora, and Pompholyxophrys, freshwater forms with hollow siliceous scales or spines, were formerly included in Nucleariida, but are now placed in Rhizaria.[5] In the past, nucleariids were included among the heliozoa as the Rotosphaerida.
According to a 2009 paper, Fonticula, a cellular slime mold, is an opisthokont and more closely related to Nuclearia than to fungi.[6]
- Order Nucleariida Cavalier-Smith 1993
- Family Nucleariidae Cann & Page 1979
- Genus Nuclearia Cienkowski 1865 [Astrodisculus Greeff 1869; Nuclearella Frenzel 1897; Nuclearina Frenzel 1897; Heliosphaerium Frenzel 1897; Nucleosphaerium Cann & Page 1979]
- Species Astrodisculus minutus Greeff 1869
- Species Astrodisculus araneiformis Schewiakoff 1893
- Species Astrodisculus laciniatus Penard 1904 [Chlamydaster lacinatus (Penard 1904) Rainer 1968]
- Species Astrodisculus affinis Schouteden 1905
- Species Astrodisculus marinus Kufferath 1952
- Species N. conspicua West 1903
- Species N. lohmanni Kufferath 1952
- Species N. delicatula Cienkowski 1865
- Species N. flavescens (Greef 1869) Patterson 1984 [Astrodisculus flavescens Greeff 1869]
- Species N. flavocapsulata (Greef 1869) Patterson 1984 [Astrodisculus flavocapsulata Greeff 1869; Astrodisculus penari Roskin 1929; Astrodisculus serratus Walton 1930; Heliosphaerium polyedricum Frenzel 1897]
- Species N. leuckarti (Frenzel 1897) Patterson 1984 [Nuclearina leuckarti Frenzel 1897]
- Species N. moebiusi Frenzel 1897
- Species N. pattersoni Dyková et al. 2003
- Species N. polypodia Schewiakoff 1863
- Species N. radians (Greef 1869) Patterson 1984 [Astrodisculus radians Greeff 1869 sensu Penard 1904 non Stern 1924; Nucleosphaerium radians (Greef 1869); Nucleosphaerium tuckeri Cann & Page 1979; Heliosphaerium aster Frenzel 1897; Heliophrys varians West]
- Species N. simplex Cienkowsky 1865 [Nuclearella variabilis Frenzel 1897]
- Species N. thermophila Yoshida, Nakayama & Inouye 2009
- Species N. rubra (Greef 1869) Patterson 1984 [Astrodisculus rubra Greeff 1869; Astrodisculus zonatus Penard 1904; Nuclearia caulescens Penard 1903: pro parte; Nuclearia zonatus (Penard 1904) Siemensma 1981]
- Genus Nuclearia Cienkowski 1865 [Astrodisculus Greeff 1869; Nuclearella Frenzel 1897; Nuclearina Frenzel 1897; Heliosphaerium Frenzel 1897; Nucleosphaerium Cann & Page 1979]
- Family Nucleariidae Cann & Page 1979
- Order Nucleariida Cavalier-Smith 1993
Characteristics
Nucleariids (Nuclearia[2] and Micronuclearia) are usually small, up to about 50 μm in size.
References
- ↑ Zettler; Nerad, T.; O'Kelly, C.; Sogin, M. (May 2001). "The nucleariid amoebae: more protists at the animal-fungal boundary". The Journal of eukaryotic microbiology. 48 (3): 293–297. doi:10.1111/j.1550-7408.2001.tb00317.x. PMID 11411837.
- 1 2 Yoshida M, Nakayama T, Inouye I (January 2009). "Nuclearia thermophila sp. nov. (Nucleariidae), a new nucleariid species isolated from Yunoko Lake in Nikko (Japan)". European journal of protistology. 45 (2): 147–155. doi:10.1016/j.ejop.2008.09.004. PMID 19157810.
- ↑ Steenkamp, E.T.; Wright, J.; Baldauf, S.L. (January 2006). "The Protistan Origins of Animals and Fungi". Molecular Biology and Evolution. 23 (1): 93–106. doi:10.1093/molbev/msj011. PMID 16151185.
- ↑ Shalchian-Tabrizi K, Minge MA, Espelund M, et al. (7 May 2008). Aramayo R, ed. "Multigene phylogeny of choanozoa and the origin of animals". PLoS ONE. 3 (5): e2098. doi:10.1371/journal.pone.0002098. PMC 2346548
. PMID 18461162. - ↑ Cavalier-Smith, Thomas; Chao, Ema E. (July 2012). "Oxnerella micra sp. n. (Oxnerellidae fam. n.), a Tiny Naked Centrohelid, and the Diversity and Evolution of Heliozoa". Protist. 163 (4): 574–601. doi:10.1016/j.protis.2011.12.005. PMID 22317961.
- ↑ Matthew W. Brown, Frederick W. Spiegel and Jeffrey D. Silberman (December 2009). "Phylogeny of the "Forgotten" Cellular Slime Mold, Fonticula alba, Reveals a Key Evolutionary Branch within Opisthokonta". Molecular Biology and Evolution. 26 (12): 2699–2709. doi:10.1093/molbev/msp185. PMID 19692665.
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