FACTOID # 21: 15% of Army recruits from South Dakota are Native American, which is roughly the same percentage for female Army recruits in the state.
 
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Encyclopedia > Green sulfur bacteria
Green sulfur bacteria - Wikipedia, the free encyclopedia

Green sulfur bacteria

From Wikipedia, the free encyclopedia that anyone can edit.

Green sulfur bacteria
Scientific classification
Domain: Bacteria
Phylum: Chlorobi group
Class: Chlorobia
Order: Chlorobiales
Family: Chlorobiaceae
Genera

Chlorobium
Ancalochloris
Chloroherpeton
Clathrochloris
Pelodictyon
Prostheochloris Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ...

The green sulfur bacteria (Chlorobiaceae) are a family 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). The phylum is most closely related to Bacteroidetes. Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... Phototrophs or photoautotrophs are photosynthetic algae, fungi, bacteria and cyanobacteria which build up carbon dioxide and water into organic cell materials using energy from sunlight. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Phylum (plural: phyla) is a taxon used in the classification of animals. ... Classes & orders Class Bacteroides    Bacteroidales Class Flavobacteria    Flavobacteriales Class Sphingobacteria    Sphingobacteriales The phylum Bacteroidetes is composed of three large groups of bacteria. ...


Green sulfur bacteria are generally nonmotile (one species has a flagellum), and come in spheres, rods, and spirals. Their environment must be oxygen-free, and they need light to grow. They engage in photosynthesis, using bacteriochlorophylls c, d, and e in vesicles called chlorosomes attached to the membrane. They use sulfide ions as electron donor, and in the process the sulfide gets oxidized, producing globules of elemental sulfur outside the cell, which may then be further oxidized. (By contrast, the photosynthesis in plants uses water as electron donor and produces oxygen.) A flagellum (plural, flagella) is a whip-like organelle that many unicellular organisms, and some multicellular ones, use to move about. ... Leaf. ... Bacteriochlorophylls are photosynthetic pigments that occur in various bacteria. ... In chemistry, a sulfide (sulphide in British and Canadian English) is a chemical compound or combination of sulfur with an oxidation number of -2, with another chemical element or a radical thereof. ... The most fundamental reactions in chemistry are the redox processes. ... General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Atomic mass 32. ...


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 meters beneath the surface of the Pacific Ocean. At this depth, the bacteria, designated GSB1, lives off the dim glow of the thermal vent since no sunlight can penetrate to that depth. A black smoker in the Atlantic Ocean Black smokers are a type of hydrothermal vent found on the ocean floor. ...


References

  • Beatty JT, Overmann J, Lince MT, Manske AK, Lang AS, Blankenship RE, Van Dover CL, Martinson TA, Plumley FG. (2005). "An obligately photosynthetic bacterial anaerobe from a deep-sea hydrothermal vent". Proceedings of the National Academy of Sciences 102 (26): 9306-10. PMID 15967984

External link

  • "The Family Chlorobiaceae". The Prokaryotes. URL accessed on July 5, 2005.

  Results from FactBites:
 
Photosynthesis in the Abyss :: Astrobiology Magazine - earth science - evolution distribution Origin of life universe ... (1632 words)
So has the understanding that these thriving communities depend not on green organisms using the Sun's light as a source of energy, but on bacteria and archaea that break down energy-rich chemicals spewing out of the sea floor along with the 350-degree C (662-degree F) vent water.
"At this occasion, green sulfur bacteria were detected at a depth of 100 m (330 feet), even deeper than before." This time, Overmann was able to grow the bacteria in the lab and learn more about its identity: a member of the green sulfur bacteria usually found in the oxygen-starved waters of estuaries.
Analysis of the new organism's RNA shows it to be a new species, a close cousin to common estuary green sulfur bacteria, and a close cousin to Overmann's Black Sea bacteria.
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