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Green Nonsulfur Bacteria - ResearchGate

Pfennig N (1967) Photosynthetic bacteria. Annual Reviews of Microbiology 21: 285–324.

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link to green nonsulfur bacteria

Mass development of phototrophic purple sulfur bacteria at the German Waddensea sediment showing a thin pinkish layer in between a cover of a cyanobacterial mat and an actively sulfate‐reducing black sedimental zone. Photo by J.F. Imhoff.

The green nonsulfur bacteria are similar to green ..

There are two main types of photosynthesis: (the kind that generates O2) and (the kind that doesn’t generate O2). Anoxygenic photosynthesis is used mainly by the purple bacteria, the green sulfur and nonsulfur bacteria, the heliobacteria and the acidobacteria. Oxygenic photosynthesis is used by the cyanobacteria, the algae, and by plants.

Green Sulfur Bacteria; Green Nonsulfur Bacteria; Heliobacteria;

Trüper HG (1978) Sulfur metabolism. In: Clayton RK and Sistrom WR (eds) The Photosynthetic Bacteria, pp. 677–690. New York: Plenum Press.

van Niel CB (1944) The culture, general physiology, morphology and classification of the non‐sulfur purple and brown bacteria. Bacteriological Reviews 8: 1–118.

The following table contains the classification of bacteria by shape and function according to the Bergy's Manual.


Classification of Bacteria Flowchart

The following is a flowchart that contains names of most of the bacterial species under the specific groups according to their Gram reaction.

Classification of Bacteria of Medical Importance that give Gram-positive Reaction
This classification was carried out in 1984 and places cocci, endospore-forming and non-sporing rods, mycobacteria, and non-filamentous actinomycetes in this group.

Classification of Bacteria of Medical Importance that give Gram-negative Reaction
This classification was carried out in 1986 and placed spirochetes, spiral and curved, aerobic bacteria and facultatively aerobic rods, obligate anaerobic bacteria, aerobic and anaerobic cocci, sulfate and sulfur-reducing, rickettsias, clamydias, and mycoplasmas in this group.

The Kingdome Prokaryotae is divided into four divisions: Gracilicutes, Firmicutes, Tenericutes, Mendosicutes (Archeabacteria).

ActinomycetesArchaeobacteriaYou will find there are many reference journals as well as books that will provide you with further information related to scientific classification of bacteria.

green nonsulfur bacteria purple nonsulfur bacteria

Pfennig N (1977) Phototrophic green and purple bacteria: a comparative, systematic survey. Annual Reviews of Microbiology 31: 275–290.

Blooming purple sulfur bacteria in a coastal lagoon where development occurs together with green microalgae and cyanobacteria. Photo by J.F. Imhoff.

Drews G and Imhoff JF (1991) Phototrophic purple bacteria. In: Shively JM and Barton LL (eds) Variations in Autotrophic Life, pp. 51–97. London: Academic Press.

Fossils of what are thought to be  photosynthetic organisms have been dated at 3.4 billion years old.
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  • Photosynthetic Bacteria – What Are Bacteria?

    In photosynthetic bacteria, the proteins that gather light for photosynthesis are embedded in cell membranes

  • anoxygenic photosynthesis: green sulfur bacteria ..

    Sausage-shaped cells are unicellular cyanobacteria (Synechococcus) and filaments are green nonsulfur bacteria.

  • to be purple nonsulfur bacteria…

    such as oxygenic cyanobacteria and anoxygenic green sulfur and green nonsulfur bacteria; ..

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Phototrophic Purple Bacteria - eLS: Essential for Life …

Photosynthesis early in the , when all forms of life on Earth were and the atmosphere had much more carbon dioxide. The first photosynthetic organisms probably evolved about , and used or as sources of electrons, rather than water. Cyanobacteria appeared later, around , and drasticaly changed the Earth when they began to , beginning about . This new atmosphere allowed the such as . Eventually, no later than a billion years ago, one of these protists formed a with a cyanobacterium, producing the ancestor of many plants and . The chloroplasts in modern plants are the descendants of these ancient symbiotic cyanobacteria.

Phototrophic purple bacteria are Proteobacteria which synthesize a ..

In some phototrophs, both ATP and reducing power (that is electron donors like NADH or NADPH) are produced from the light reactions, whereas in others (like the purple bacteria) the light reaction producing ATP but reducing power has to be obtained in separate reactions (like oxidizing inorganic compounds).

Purple nonsulfur bacteria such as ..

Although photosynthesis can happen in different ways in different species, some features are always the same. For example, the process always begins when energy from light is absorbed by called that contain . In plants, these proteins are held inside called , while in bacteria they are embedded in the . Some of the light energy gathered by chlorophylls is stored in the form of (ATP). The rest of the energy is used to remove from a substance such as water. These electrons are then used in the reactions that turn carbon dioxide into organic compounds. In plants, algae and cyanobacteria this is done by a sequence of reactions called the , but different sets of reactions are found in some bacteria, such as the in . Many photosynthetic organisms have that concentrate or store carbon dioxide. This helps reduce a wasteful process called that can consume part of the sugar produced during photosynthesis.

Green and red filamentous bacteria, ..

Photosynthetic organisms are , which means that they are able to food directly from carbon dioxide using energy from light. However, not all organisms that use light as a source of energy carry out photosynthesis, since use organic compounds, rather than carbon dioxide, as a source of carbon. In plants, algae and cyanobacteria, photosynthesis releases oxygen. This is called oxygenic photosynthesis. Although there are some differences between oxygenic photosynthesis in , and , the overall process is quite similar in these organisms. However, there are some types of bacteria that carry out , which consumes carbon dioxide but does not release oxygen.

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