Telonema
{{Short description|Genus of single-celled organisms}}
{{Automatic taxobox
| taxon = Telonema
| authority = Griessmann, 1913
| type_species = Telonema subtile
| type_species_authority = Griessmann, 1913
| subdivision_ranks = Other species
| subdivision = * T. antarcticum Thomsen 2005
}}
Telonema is a genus of single-celled organisms.
Some sources group Telonema within the cryptomonads-haptophytes assemblage.{{Cite web|url=http://tolweb.org/Eukaryotes/3 |title=Eukaryotes |access-date=2009-06-17}} It is sometimes assigned to a unique phylum, Telonemia.{{Cite journal|author=Shalchian-Tabrizi K, Eikrem W, Klaveness D |title=Telonemia, a new protist phylum with affinity to chromist lineages |journal=Proc. Biol. Sci. |volume=273 |issue=1595 |pages=1833–42 |date=July 2006|pmid=16790418 |pmc=1634789 |doi=10.1098/rspb.2006.3515 |display-authors=etal}} Although Telonema is within the Eukaryota Domain, it does not have any close relations to other organisms within that domain.{{Cite journal|last=Yabuki, Eikrem, Takishita, J. Patterson|first=Akinori, Wenche, Kiyotaka, David|date=July 2013|title=Fine Structure of Telonema subtilis Griessmann, 1913: A Flagellate with a Unique Cytoskeletal Structure Among Eukaryotes|journal=Protist|volume=164|issue=4|pages=556–569|doi=10.1016/j.protis.2013.04.004|pmid=23796965}} However, it was once thought Telonema was closely related to photosynthetic cryptomonads, or stramenopiles and centrohelids, but there was not enough data to prove this.{{Cite journal|last=Burki, F., Inagaki, Y., Bråte, J., Archibald, J. M., Keeling, P. J., Cavalier-Smith, T., … Shalchian-Tabrizi, K. (2009). Large-scale phylogenomic analyses reveal that two enigmatic protist lineages, telonemia and centroheliozoa, are related to photosynthetic chromalveolates. Genome biology and evolution, 1, 231–238. doi:10.1093/gbe/evp022|date=July 2009|title=Large-Scale Phylogenomic Analyses Reveal That Two Enigmatic Protist Lineages, Telonemia and Centroheliozoa, Are Related to Photosynthetic Chromalveolates|journal=Genome Biology and Evolution|volume=1|pages=231–238|doi=10.1093/gbe/evp022|pmc=2817417|pmid=20333193}} After a study of 127 genes across 72 species, they found that Telonema subtile could be related to Alveolata and Rhizaria.
Species
Two species are recognized by AlgaeBase as of 2013, Telonema subtile and T. antarcticum.M. D. Guiry in Guiry, M. D. & G. M. 2013. [http://www.algaebase.org/search/genus/detail/?genus_id=46331&-session=abv4:4408A1690ee550C7B3Vmx31D111E Telonema Griessmann, 1913.] AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed 9 June 2013. The latter was described in 2005.{{cite journal | last1 = Klaveness | first1 = D. | display-authors = etal | year = 2005 | title = Telonema antarcticum sp. nov., a common marine phagotrophic flagellate | url = http://ijs.sgmjournals.org/content/55/6/2595.long | journal = International Journal of Systematic and Evolutionary Microbiology | volume = 55 | issue = 6| pages = 2595–2604 | doi=10.1099/ijs.0.63652-0 | pmid=16280533| doi-access = free }}
Other sources call the former Telonema subtilis.{{cite journal | last1 = Okamoto | first1 = N. | display-authors = etal | year = 2009 | title = Molecular phylogeny and description of the novel katablepharid Roombia truncata gen. et sp. nov., and establishment of the Hacrobia taxon nov | journal = PLOS ONE | volume = 4 | issue = 9| page = e7080 | pmc=2741603 | pmid=19759916 | doi=10.1371/journal.pone.0007080| bibcode = 2009PLoSO...4.7080O | doi-access = free }}
References
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