Pansomonadida
| Pansomonadida | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Sar |
| Clade: | Rhizaria |
| Phylum: | Cercozoa |
| Subphylum: | Filosa |
| Infraphylum: | Monadofilosa |
| Order: | Pansomonadida Vickerman in Vickerman et al. 2005 |
| Families | |
| Synonyms | |
| |
The pansomonads, order Pansomonadida,[1] are a group of heterotrophic protists that belong to the phylum Cercozoa.[2] Some of them are helioflagellates, with characteristics of heliozoans and amoebo-flagellates.[3]
Morphology and ecology
[edit]They are gliding phagotrophs that inhabit the soil and, unlike Allapsidae, typically form rounded lamellar pseudopodia (= lamellipodia) that spread over surfaces. They have two dense rhizoplasts linked with each mature centriole. Their centrioles are orthogona or parallel to each other. The transition zone of their cilia has a dense distal plate. They are either bacterivorous or algivorous—bacterivorous forms may have haptopodia.[2]
Classification
[edit]Phylogenetic analyses consistently showed that the two orders were sister groups, and it was proposed that pansomonads had evolved from glissomonads. At the same time, Viridiraptoridae was recovered as more closely related to the known pansomonads at the time than to glissomonads, which prompted the inclusion of viridiraptorids within pansomonads.[4] Adl et al., 2019 excludes viridiraptorids and pansomonads from glissomonads. The current taxonomy of the pansomonads is:[5][6][2]
- Family Agitatidae Cavalier-Smith & Bass in Bass et al. 2009
- Agitata Cavalier-Smith & Bass in Bass et al. 2009
- Family Aurigamonadidae Cavalier-Smith in Cavalier-Smith & Oates 2012[7]
- Aurigamonas Vickerman in Vickerman et al. 2005
References
[edit]- ↑ Vickerman, Keith; Appleton, Paul L.; Clarke, Ken J.; Moreira, David (2005-11-17). "Aurigamonas solis n. gen., n. sp., a Soil-Dwelling Predator with unusual Helioflagellate Organisation and Belonging to a Novel Clade within the Cercozoa". Protist. 156 (3): 335–354. doi:10.1016/j.protis.2005.07.003. ISSN 1434-4610.
- 1 2 3 Cavalier-Smith, Thomas; Chao, Ema E.; Lewis, Rhodri (April 2018). "Multigene phylogeny and cell evolution of chromist infrakingdom Rhizaria: contrasting cell organisation of sister phyla Cercozoa and Retaria". Protoplasma. 255 (5): 1517–1574. doi:10.1007/s00709-018-1241-1. PMC 6133090. PMID 29666938.
- ↑ Vickerman K, Appleton PL, Clarke KJ, Moreira D (2005). "Aurigamonas solis n. gen., n. sp., a Soil-Dwelling Predator with unusual Helioflagellate Organisation and Belonging to a Novel Clade within the Cercozoa". Protist. 156: 335–354. doi:10.1016/j.protis.2005.07.003.
- ↑ Scoble JM, Cavalier-Smith T (2014). "Scale evolution, sequence phylogeny, and taxonomy of thaumatomonad Cercozoa: 11 new species and new genera Scutellomonas, Cowlomonas, Thaumatospina and Ovaloplaca". Eur J Protistol. 50 (3): 270–313. doi:10.1016/j.ejop.2013.12.005. PMID 24667165.
- ↑ Adl, Sina M.; Bass, David; Lane, Christopher E.; Lukeš, Julius; Schoch, Conrad L.; Smirnov, Alexey; Agatha, Sabine; Berney, Cedric; Brown, Matthew W.; Burki, Fabien; Cárdenas, Paco; Čepička, Ivan; Chistyakova, Lyudmila; del Campo, Javier; Dunthorn, Micah (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.
- ↑ Prokina, Kristina; Torruella, Guifré; Galindo, Luis Javier; Dudin, Omaya; López‐García, Purificación; Moreira, David (2025-08-25). "Discocelia Plataet Sp. n., a Small Incertae Sedis Cercozoan Flagellate". Journal of Eukaryotic Microbiology. 72 (5). doi:10.1111/jeu.70041. ISSN 1066-5234. PMC 12376651. PMID 40853040.
- ↑ Cavalier-Smith, Thomas; Oates, Brian (2012-03-01). "Ultrastructure of Allapsa vibrans and the Body Plan of Glissomonadida (Cercozoa)". Protist. 163 (2): 165–187. doi:10.1016/j.protis.2011.10.006. ISSN 1434-4610.