Thecamonas trahens

Thecamonas trahens
Scientific classification Edit this classification
Domain: Eukaryota
Supergroup: Amorphea
Clade: Obazoa
Class: Thecomonadea
Order: Apusomonadida
Family: Apusomonadidae
Genus: Thecamonas
Species:
T. trahens
Binomial name
Thecamonas trahens
Larsen & Patterson, 1990
Synonyms

Amastigonas trahens

Thecamonas trahens is a single-celled eukaryotic organism belonging to the supergroup Opisthokonta and the lineage Apusomonadida, specifically within the high level group Amorphea. Members of this family, known as apusomonads, are gliding heterotrophic protozoan zooflagellates that primarily feed on bacteria and other prokaryotes.

Description

Thecamonas has a 'tusk' that projects outwards anteriorly, and two flagella. Their anterior basal body associates with one leftward-travelling micro tubular root, and a 'ribbon'-like organisation of six microtubules that travel down the right side of the cell.

Taxonomy

Thecamonas trahens is a species within the family Apusomonadidae, a group that is a sister taxon to the Opisthokonts.

Ecology

Thecamonas trahens occurs in marine, freshwater, and terrestrial environments, and was initially isolated and cultured from marine benthic sites in tropical regions. In these environments, Thecamonas trahens primarily thrives by feeding on prokaryotic organisms. Additionally, Thecamonas trahens possesses genes associated with histidine kinases in cell signaling pathways, animal-like sodium channels, glycolytic mitochondrial metabolism, and calcium signaling—traits linked to the evolution of multicellularity. The discovery of sodium channel analogs in Thecamonas suggests that voltage-gated Na⁺ channels may have evolved before the divergence of animals and fungi.

References

  1. 1 2 "Taxonomy browser (Thecamonas trahens)". NCBI taxonomy database. Retrieved 2024-12-06.
  2. 1 2 Brown, Matthew W.; Sharpe, Susan C.; Silberman, Jeffrey D.; Heiss, Aaron A.; Lang, B. Franz; Simpson, Alastair G. B.; Roger, Andrew J. (2013-10-22). "Phylogenomics demonstrates that breviate flagellates are related to opisthokonts and apusomonads". Proceedings of the Royal Society B: Biological Sciences. 280 (1769) 20131755. doi:10.1098/rspb.2013.1755. PMC 3768317. PMID 23986111.
  3. 1 2 Heiss, Aaron A.; Walker, Giselle; Simpson, Alastair G. B. (2013-09-01). "The Microtubular Cytoskeleton of the Apusomonad Thecamonas, a Sister Lineage to the Opisthokonts". Protist. 164 (5): 598–621. doi:10.1016/j.protis.2013.05.005. ISSN 1434-4610. PMID 23872341.
  4. ↑ Larsen, Jacob; Patterson, David J. (1990-08-01). "Some flagellates (Protista) from tropical marine sediments". Journal of Natural History. 24 (4): 801–937. Bibcode:1990JNatH..24..801L. doi:10.1080/00222939000770571. ISSN 0022-2933.
  5. ↑ Tikhonenkov, D. V.; Burkovsky, I. V.; Mazei, Yu. A. (2015-09-01). "Is there a relation between the distribution of heterotrophic flagellates and the zonation of a marine intertidal flat?". Oceanology. 55 (5): 711–723. Bibcode:2015Ocgy...55..711T. doi:10.1134/S0001437015050173. ISSN 1531-8508.
  6. ↑ Kabbara, Samar; Hérivaux, Anaïs; Dugé de Bernonville, Thomas; Courdavault, Vincent; Clastre, Marc; Gastebois, Amandine; Osman, Marwan; Hamze, Monzer; Cock, J Mark; Schaap, Pauline; Papon, Nicolas (2018-09-25). "Diversity and Evolution of Sensor Histidine Kinases in Eukaryotes". Genome Biology and Evolution. 11 (1): 86–108. doi:10.1093/gbe/evy213. ISSN 1759-6653. PMC 6324907. PMID 30252070.
  7. ↑ Cai, Xinjiang; Wang, Xiangbing; Clapham, David E. (October 2014). "Early Evolution of the Eukaryotic Ca2+ Signaling Machinery: Conservation of the CatSper Channel Complex". Molecular Biology and Evolution. 31 (10): 2735–2740. doi:10.1093/molbev/msu218. ISSN 1537-1719. PMC 4169769. PMID 25063443.
  8. ↑ Nakayama, Takuro; Ishida, Ken-ichiro; Archibald, John M. (2012-12-20). "Broad Distribution of TPI-GAPDH Fusion Proteins among Eukaryotes: Evidence for Glycolytic Reactions in the Mitochondrion?". PLOS ONE. 7 (12) e52340. Bibcode:2012PLoSO...752340N. doi:10.1371/journal.pone.0052340. ISSN 1932-6203. PMC 3527533. PMID 23284996.
  9. ↑ Cai, Xinjiang (2012-02-01). "Ancient Origin of Four-Domain Voltage-gated Na+ Channels Predates the Divergence of Animals and Fungi". The Journal of Membrane Biology. 245 (2): 117–123. doi:10.1007/s00232-012-9415-9. ISSN 1432-1424. PMID 22258316.