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Chlorobium

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Also known as Chlorochromatium

Chlorobium is a genus of green sulfur bacteria. They are photolithotrophic oxidizers of sulfur and most notably utilise a noncyclic electron transport chain to reduce NAD+. Photosynthesis is achieved using a Type 1 Reaction Centre using bacteriochlorophyll (BChl) a. Two photosynthetic antenna complexes aid in light absorption: the Fenna-Matthews-Olson complex ("FMO", also containing BChl a), and the chlorosomes which employ mostly BChl c, d, or e. Hydrogen sulfide is used as an electron source and carbon dioxide its carbon source.

Species

GENUS

  1. KingdomBacteria
  2. PhylumBacteroidota
  3. ClassChlorobia
  4. OrderChlorobiales
  5. FamilyChlorobiaceae
Habitatmarine, freshwater
Observations recorded1,497

via GBIF

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Green d winogradsky.jpg
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Article

5 sections
Contents
  • Molecular signatures for ''Chlorobiota''
  • Relatedness of ''Chlorobiota'' to ''Bacteroidota'' and ''Fibrobacterota'' phyla
  • Phylogeny
  • References
  • External links

Chlorobium is a genus of green sulfur bacteria. They are photolithotrophic oxidizers of sulfur and most notably utilise a noncyclic electron transport chain to reduce NAD+. Photosynthesis is achieved using a Type 1 Reaction Centre using bacteriochlorophyll (BChl) a. Two photosynthetic antenna complexes aid in light absorption: the Fenna-Matthews-Olson complex ("FMO", also containing BChl a), and the chlorosomes which employ mostly BChl c, d, or e. Hydrogen sulfide is used as an electron source and carbon dioxide its carbon source.

Chlorobium species exhibit a dark green color; in a Winogradsky column, the green layer often observed is composed of Chlorobium. This genus lives in strictly anaerobic conditions below the surface of a body of water, commonly the anaerobic zone of a eutrophic lake.

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