Order of micro-organisms
Rigifilida |
Scientific classification |
Domain: | Eukaryota |
Clade: | Opimoda |
Clade: | CRuMs |
Class: | Hilomonadea Cavalier-Smith 2008 emend. 2012[1] |
Order: | Rigifilida Cavalier-Smith in Yabuki et al. 2012 |
Families |
- Micronucleariidae
- Rigifilidae
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Rigifilida is a clade of non-ciliate phagotrophic eukaryotes. It consists of two genera: Micronuclearia and Rigifila.
Characteristics
Cells of rigifilids are covered with either a single or a double-layered submembrane pellicular lamina that makes them rigid in consistence. Slender branching filopodia emanate from a ventral aperture of the cell and are employed to collect bacteria upon which they feed and to attach the organism to the substratum. Around this aperture, the pellicle is reflexed around forming a peristomial collar. Other notable features are flat and irregular shaped mitocondrial cristae, a single dorsal nucleus and the lack of centrioles and cilia.[2]
Phylogeny
Scotokaryota | | Metamonada Cavalier-Smith 1987 emend. Cavalier-Smith 2003 | | Opimoda | | | |
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Taxonomy
Rigifilida is currently placed in CRuMs.[4]
- Order Rigifilida Cavalier-Smith 2012 [Micronucleariida Cavalier-Smith 2008]
References
- ^ Cavalier-Smith, Thomas (2013). "Early evolution of eukaryote feeding modes, cell structural diversity, and classification of the protozoan phyla Loukozoa, Sulcozoa, and Choanozoa". European Journal of Protistology. 49 (2): 115–178. doi:10.1016/j.ejop.2012.06.001. PMID 23085100.
- ^ Yabuki A, Ishida KI, Cavalier-Smith T (2013). "Rigifila ramosa n. gen., n. sp., a Filose Apusozoan with a Distinctive Pellicle, is Related to Micronuclearia". Protist. 164 (1): 75–88. doi:10.1016/j.protis.2012.04.005.
- ^ Brown, Matthew W.; Heiss, Aaron A; Kamikawa, Ryoma; Inagaki, Yuji; Yabuki, Akinori; Tice, Alexander K.; Shiratori, Takashi; Ishida, Ken-Ichiro; Hashimoto, Tetsuo (2018-01-19). "Phylogenomics Places Orphan Protistan Lineages in a Novel Eukaryotic Super-Group". Genome Biology and Evolution. 10 (2): 427–433. doi:10.1093/gbe/evy014. ISSN 1759-6653. PMC 5793813. PMID 29360967.
- ^ Adl, Sina M.; Bass, David; Lane, Christopher E.; Lukeš, Julius; Schoch, Conrad L.; Smirnov, Alexey; Agatha, Sabine; Berney, Cedric; Brown, Matthew W. (2018-09-26). "Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes". Journal of Eukaryotic Microbiology. 66 (1): 4–119. doi:10.1111/jeu.12691. ISSN 1066-5234. PMC 6492006. PMID 30257078.
- Domain
- Archaea
- Bacteria
- Eukaryota
- (major groups
- Excavata
- Diaphoretickes
- Hacrobia
- Cryptista
- Rhizaria
- Alveolata
- Stramenopiles
- Plants
- Amorphea
- Amoebozoa
- Opisthokonta
- Animals
- Fungi)
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Incertae sedis | |
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- ¹traditional kingdoms excluded from protists
- *paraphyletic groups
- bold denotes groups with over 1,000 species
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Taxon identifiers |
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Rigifilida | |
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