Raphidocelis subcapitata explained

Raphidocelis subcapitata, formerly known as Selenastrum capricornutum and Pseudokirchneriella subcapitata is a microalga.[1] This microalga presents a curved and twisted appearance like a sickle. The cells are normally presented in a solitary form in culture, although it may also be present in small colonies. It has a length between 7 and 15 μm, and a width between 1.2 and 3 μm. A single chloroplast is present, filling nearly the entire cell; it lacks a pyrenoid.[2] It is commonly used as a bioindicator species to assess the levels of nutrients or toxic substances in fresh water environments. This species is quite sensitive to the presence of toxic substances including metals and has a ubiquitous distribution, so is broadly used in ecotoxicology.[3] [4] This species has been found to be more competitive than Chlorella vulgaris at low sodium chloride concentrations, but C. vulgaris was more competitive under salt stress.[5]

Notes and References

  1. M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 2 May 2013.
  2. Book: Chlorophyceae (Grünalgen), Ordnung Chlorococcales . Komárek . J. . Fott . B. . 1983 . E. Schweizerbart'sche Verlagsbuchhandlung . Das Phytoplankton des Süßwassers . German . 1044 .
  3. Web site: Selenastrum . 2012-02-09 . dead . https://web.archive.org/web/20111212045621/http://silicasecchidisk.conncoll.edu/LucidKeys/Carolina_Key/html/Selenastrum_Main.html . 12 December 2011 .
  4. 10.1016/S1532-0456(02)00077-7 . 12356528 . 133 . 1–2 . Biotic ligand model development predicting Zn toxicity to the alga Pseudokirchneriella subcapitata: possibilities and limitations . Comparative Biochemistry and Physiology C . 207–218. September 2002 . Heijerick . D.G. . De Schamphelaere . K.A.C. . Janssen . C.R. .
  5. Venâncio. C.. Anselmo. E.. Soares. A.. Lopes. I.. 2017-02-01. Does increased salinity influence the competitive outcome of two producer species?. Environmental Science and Pollution Research. en. 24. 6. 5888–5897. 10.1007/s11356-016-8346-x. 28064393. 26518865 . 0944-1344.

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