Botryococcus Phylogeny

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Botryococcus Phylogeny[edit]

Botryococcus is a unicellular photosynthetic eukaryotic bacteria that is a member of the class of chlorophyceae. This green algae is of great importance to engineers and scientists involved in renewable energy due to its high production of hydrocarbons.

Sequencing of Botryococcus[edit]

It is suggested that B. Braunii is closely related to Characium vaculatum and Dunaliella parva through the comparison of sequence analysis of the small subunit of r-RNA (16s RNA).[1] The number of thylakoids per lamella of B. braunii and the shape of the pyrenoid have been reported to coincide with those of the Chlorophycaea from ultrastructual analysis.[2] By sequencing the 18S rRNA of strains of B. braunii it was found the closest relative is the genus Choricystis. Also the B. braunii/Choricystis lineage has a sister-group relationship with Microthamnion kuetzingianum and Fusochloris perforate.[3]

History[edit]

When botryococcus was first discovered in 1849 it was reported as a member of the Chlorophyceae. Later in 1950 botryococcus was moved to be a member of Xanthophyceae based on the structure of plastids and starch granules. Only 27 years later the algae was returned to to Chlorophyceae due to ultrastructural studies that related botryococcus to other algae in this class.[4]

References[edit]

  1. [1] Anirban Banerjee, Rohit Sharma, Yusuf Chisti, U. C. Banerjee, Botryococcus braunii; A Renewable Source of Hydrocarbons and Other Chemicals, Critical Reviews in Biotechnology, Volume 22, Pages 245-279. http://www.ncbi.nlm.nih.gov/pubmed/12405558
  2. [2] Shigeki Sawayama, Seiichi Inoue, Shin-ya Yokoyama, Phylogenetic Position of Botryococcus Braunii, Journal of Phycology, Volume 31, Issue 3, 1995, Pages 419-420. http://onlinelibrary.wiley.com/doi/10.1111/j.0022-3646.1995.00419.x/abstract
  3. [3] Hoda H. Senousy, Gordon W. Beakes, Ethan Hack, Phylogenetic Placement of Botryococcus Braunii, Journal of Phycology, Volume 40, Issue 2, 2004, Pages 412-423. http://onlinelibrary.wiley.com/doi/10.1046/j.1529-8817.2004.03173.x/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false
  4. [4] Shigeki Sawayama, Seiichi Inoue, Shin-ya Yokoyama, Phylogenetic Position of Botryococcus Braunii, Journal of Phycology, Volume 31, Issue 3, 1995, Pages 419-420. http://onlinelibrary.wiley.com/doi/10.1111/j.0022-3646.1995.00419.x/abstract