Rigifilida
In this article we are going to analyze in depth Rigifilida, a topic of great relevance and interest today. From its origins to its impact on today's society, Rigifilida has generated debate and growing interest among experts and the general public. Throughout the next few lines we will explore the different aspects surrounding Rigifilida, from its historical importance to its influence in different areas of daily life. Additionally, we will examine different perspectives and opinions about Rigifilida, with the aim of offering a complete and objective view of this topic.
| Rigifilida | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Clade: | Opimoda |
| Clade: | CRuMs |
| Class: | Hilomonadea Cavalier-Smith 2008 emend. 2012 |
| Order: | Rigifilida Cavalier-Smith in Yabuki et al. 2012 |
| Families | |
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.
Phylogeny
| Scotokaryota |
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Taxonomy
Rigifilida is currently placed in CRuMs.
- Order Rigifilida Cavalier-Smith 2012
- Family Rigifilidae Yabuki & Cavalier-Smith 2012
- Genus Rigifila Yabuki & Cavalier-Smith 2012
- Species Rigifila ramosa Yabuki & Cavalier-Smith 2012
- Genus Rigifila Yabuki & Cavalier-Smith 2012
- Family Micronucleariidae Cavalier-Smith 2008
- Genus Micronuclearia Mikrjukov & Mylnikov 2001
- Species Micronuclearia podoventralis Mikrjukov & Mylnikov 2001
- Genus Micronuclearia Mikrjukov & Mylnikov 2001
- Family Rigifilidae Yabuki & Cavalier-Smith 2012
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.