Green sulfur bacteria
|Green sulfur bacteria|
|Green sulfur bacteria in a Winogradsky column|
Green sulfur bacteria are nonmotile (except Chloroherpeton thalassium, which may glide) and occur in spheres, rods, and spirals. Photosynthesis is achieved using a Type 1 Reaction Centre using bacteriochlorophyll (BChl) a and in chlorosomes which employ BChl c, d, or e; in addition chlorophyll a is also present,. They use sulfide ions, hydrogen or ferrous iron as an electron donor and the process is mediated by the type I reaction centre and Fenna-Matthews-Olson complex. Elemental sulfur deposited outside the cell may be further oxidized. By contrast, the photosynthesis in plants uses water as the electron donor and produces oxygen.
A species of green sulfur bacteria has been found living near a black smoker off the coast of Mexico at a depth of 2,500 m in the Pacific Ocean. At this depth, the bacterium, designated GSB1, lives off the dim glow of the thermal vent since no sunlight can penetrate to that depth.
Green sulfur bacteria appear in Lake Matano, Indonesia, at a depth of about 110–120 m. The population may include the species Chlorobium ferrooxidans.
- Phylogeny 1
- See also 2
- References 3
- External links 4
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LSPN)   and the phylogeny is based on 16S rRNA-based LTP release 111 by The All-Species Living Tree Project 
♪ Prokaryotes where no pure (axenic) cultures are isolated or available, i. e. not cultivated or can not be sustained in culture for more than a few serial passages
♦ Type strain lost or not available
♥ Strains not lodged at National Center for Biotechnology Information (NCBI) or listed in the List of Prokaryotic names with Standing in Nomenclature (LPSN)
♠ Strains found at the National Center for Biotechnology Information (NCBI) but not listed in the List of Prokaryotic names with Standing in Nomenclature (LSPN)
- D.A. Bryant & N.-U. Frigaard; Frigaard (November 2006). "Prokaryotic photosynthesis and hototrophy illuminated". Trends Microbiol. 14 (11): 488–96.
- Green, Beverley R. (2003). Light-Harvesting Antennas in Photosynthesis. p. 8.
- Beatty JT, Overmann J, Lince MT, Manske AK, Lang AS, Blankenship RE, Van Dover CL, Martinson TA, Plumley FG.; Overmann; Lince; Manske; Lang; Blankenship; Van Dover; Martinson; Plumley (2005). "An obligately photosynthetic bacterial anaerobe from a deep-sea hydrothermal vent".
- Crowe, Sean; Jones, CarriAyne; Katsev, Sergei; O'Neill, AH; Sturm, A; Canfield, DE; Haffner, GD; et al. (2008). "Photoferrotrophs thrive in an Archean Ocean analogue".
- See the
- See the
- See the
- "The Family Chlorobiaceae". The Prokaryotes. Retrieved July 5, 2005.