Polytomella

Polytomella
Scientific classification
Domain: Eukaryota
Kingdom: Viridiplantae
Phylum: Chlorophyta
Class: Chlorophyceae
Order: Chlamydomonadales
Family: Chlamydomonadaceae
Genus: Polytomella
Species
  • P. agilis
  • P. sp. Pringsheim 198.80
  • P. parva
  • P. sp. Pringsheim 63-10
  • P. capuana
  • P. caeca
  • P. papillata
  • P. magna

Polytomella is a genus of green algae, specifically of the Chlamydomonadaceae.[1] Polytomella is a free-living, flagellated, nonphotosynthetic green alga with a highly reduced, linear fragmented mitochondrial genome.[2][3] Polytomella, as it exists today, bears evidence of once having a functional photosynthetic plastid which has over evolutionary time changed such that it would appear now to have no genome or gene expressing mechanisms remaining to it.[4] Having transitioned completely to heterotrophy, Polytomella uses organic acids, alcohols and monosaccharides as its carbon source.[3][5][6] Despite being an evolutionary descendent of the green algae, Polytomella is a colourless organism because it has lost its photosynthetic ability.[6]

References

  1. ↑ See the NCBI webpage on Polytomella. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
  2. ↑ Smith, DR; Lee, RW (2011). "Nucleotide diversity of the colorless green alga Polytomella parva (Chlorophyceae, Chlorophyta): high for the mitochondrial telomeres, surprisingly low everywhere else.". The Journal of eukaryotic microbiology. 58 (5): 471–3. doi:10.1111/j.1550-7408.2011.00569.x. PMID 21762422.
  3. 1 2 Inwood, W; Yoshihara, C; Zalpuri, R; Kim, KS; Kustu, S (November 2008). "The ultrastructure of a Chlamydomonas reinhardtii mutant strain lacking phytoene synthase resembles that of a colorless alga.". Molecular plant. 1 (6): 925–37. doi:10.1093/mp/ssn046. PMID 19825593.
  4. ↑ "Plant Phys". m.plantphysiol.org. Retrieved 2015-09-28.
  5. ↑ Links, J.; Verloop, A.; Havinga, E. (December 1961). "Some growth experiments withPolytoma uvella on synthetic media". Antonie van Leeuwenhoek. 27 (1): 76–80. doi:10.1007/BF02538425.
  6. 1 2 Cruz, Vidal; Gittleson, Stephen. "The genus Polytomella: A review of classification, morphology, life cycle, metabolism, and motility". Archiv für Protistenkunde. 124 (1-2): 1–28. doi:10.1016/s0003-9365(81)80001-2. Retrieved 25 September 2015.

External links

Scientific references

Scientific databases


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