Capsaspora
| Capsaspora | |
|---|---|
| 150px | |
| Scientific classification | |
| Domain: | |
| (unranked): | |
| Class: | |
| Genus: |
Capsaspora
Hertel, Bayne & Loker, 2002[1]
|
| Species: |
C. owczarzaki
|
| Binomial name | |
| Capsaspora owczarzaki Hertel, Bayne & Loker, 2002[1]
|
|
Lua error in Module:Taxonbar/candidate at line 22: attempt to index field 'wikibase' (a nil value).
Capsaspora is a monotypic genus containing the single species Capsaspora owczarzaki, a single-celled eukaryote which is a symbiont in the haemolymph of the tropical freshwater snail Biomphalaria glabrata.[1] The genome of C. owczarzaki has been sequenced.[2]
Description
C. owczarzaki cells were described as 3 to 5 μm amoebas with a nucleus ⅓ - ½ of the diameter of the cell (containing a central nucleolus), long unbranched pseudopodia, mitochondria with flattened cristae, numerous phagosomes, lipid vacuoles, glycogen granules and a Golgi apparatus.[3][4] Cells could encyst in response to crowding, generating 4 to 5 μm cysts with a double wall: the outer thin, irregular and loosely attached; and the inner thicker, smooth.[5]
Taxonomy
C. owczarzaki is together with Ministeria vibrans a member of the Filasterea clade.[6][7] This group is probably the sister group to a clade comprising Metazoa and Choanoflagellata, which together form the Filozoa [6][7][8] (See Figure 1).
Applications
C. owczarzaki is of scientific interest because it is one of the closest unicellular relatives of multicellular animals. Its genome has recently been sequenced and shows several genes involved in metazoan multicellularity, such as integrins,[9] metazoan transcription factors,[10] and protein tyrosine kinases.[11] Moreover, it has relevance to human health because its host, the snail Biomphalaria glabrata, is also the intermediate host of the digenean flatworm Schistosoma mansoni, the causative agent of widespread schistosomiasis in humans. C. owczarzaki not only parasitizes the intermediate host of S. mansoni but also attacks and kills the sporocysts of the flatworm living inside the snail.[4]
References
<templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." />- ↑ 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ http://www.broadinstitute.org/annotation/genome/multicellularity_project/MultiHome.html
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Sebe-PedrosA. 2013. The origin of metazoan multicellularity, a genomic and functionalapproach. PhD UB, Facultat de Biologia, Departament de Genètica
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Suga H, DacreM, de Mendoza A,Shalchian-Tabrizi K, Manning G, Ruiz-TrilloI. (2012) Genomic Survey of Premetazoans Shows Deep Conservation of Cytoplasmic Tyrosine Kinases and Multiple Radiations of Receptor Tyrosine Kinases. Science Signaling 5(222),ra35 doi:10.1126/scisignal.2002733
