Encyclopedia > Green sulfur bacteria

  Article Content

Green sulfur bacteria

Green sulfur bacteria
Scientific classification
Domain:Bacteria
Phylum:Chlorobi
Class:Chlorobia
Order:Chlorobiales
Family:Chlorobiaceae
Genera
Chlorobium[?]
Ancalochloris[?]
Chloroherpeton[?]
Pelodictyon[?]
Prostheochloris[?]

The green sulfur bacteria are a family (Chlorobiaceae) of phototrophic[?] bacteria. No other bacterial families are known to be closely related to them, and they are accordingly placed in their own phylum (Chlorobi).

Green sulfur bacteria are generally nonmotile (one species has a flagellum), and come in spheres, rods, and spirals. Their environment must be oxygen-free, although they need light to grow. They engage in photosynthesis, using bacteriochlorophylls[?] c, d, and e in vesicles attached to the membrane, and in the presence of sulfur, which acts as electron donor. This is used in the form of sulfide[?] ions, producing globules of neutral sulfur outside the cell, which may then be further oxidized.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Sinkhole

... regions, there may be hundreds or even thousands of sinkholes in a small area so that the earth as seen from the air looks pock-marked. Often, in such areas, there are few ...