Chromatium: Difference between revisions

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[[File:Chromatium.png|thumb|alt=Alt|Caption]]
[[File:Chromatium.png|thumb|alt=Alt|Chromatium]]
 





Revision as of 19:50, 11 May 2015

This student page has not been curated.

Classification

Domain: Bacteria Phylum: Proteobacteria Class: Gammaproteobacteria Order: Chromatiales Family: Chromatiaceae Genus: Chromatium Species: Chromatium okenii

Description

Chromatium is a gram negative bacteria found in marine environments. They tend to be straight rod shaped or even slightly curved rods of ~1 µm in diameter and 3-4 µm long.[3] These bacteria belong to the purple photosynthetic sulfur bacteria that oxidize sulfide into sulfur which is deposited in intracellular granules in their cytoplasm.[2]

Ecology and Significance

Genome Structure

Metabolism

These bacteria grow photolithoautotrophically, photolithoheterotrophically, and/or photoorganogeterotrophically.

They grow in the presence of light under anaerobic conditions. They can grow on an inorganic medium using CO2 as the sole carbon source in the presence of reduced inorganic sulfur. They use sulfur and sulfide as sole photosynthetic electron donor. Purple sulfur bacteria have to fix CO2 in order to grown and survive.

Chromatium can perform anoxygenic photosynthesis and contain bacteriochlorophyll a and carotenoids of spirilloxanthin group.

References

[1] Golyshin, Peter N. “Genome Sequence Completed of Alcanivorax borkumensis, a Hydrocarbon-degrading Bacterium That Plays a Global Role in Oil Removal from Marine Systems.” 3 (2003): 215-20. Print.

[2] Neyra, Carlos A. Carbon Metabolism. Boca Raton, FL: CRC Pr., 1985. Web. 11 May 2015.

[3] "Bacterial Metabolism & Photosynthesis." Bacterial Photosynthesis. N.p., n.d. Web. 11 May 2015.

Figures

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Chromatium



Author

Page authored by Sukhwinder Kaur, student of Prof. Katherine Mcmahon at University of Wisconsin - Madison.