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Alphaproteobacteria is a class of bacteria in the phylum Pseudomonadota (formerly "Proteobacteria"). [4] The Magnetococcales and Mariprofundales are considered basal or sister to the Alphaproteobacteria. [5] [6] The Alphaproteobacteria are highly diverse and possess few commonalities, but nevertheless share a common ancestor.
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The phylum Pseudomonadota encompasses classes Acidithiobacillia, Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Hydrogenophilia, and Zetaproteobacteria.[11] The phylum includes a wide variety of pathogenic genera, such as Escherichia, Salmonella, Vibrio, Yersinia, Legionella, and many others. [15]
Apr 21, 2024 · The first class of Proteobacteria is the Alphaproteobacteria. The unifying characteristic of this class is that they are oligotrophs, organisms capable of living in low-nutrient environments such as deep oceanic sediments, glacial ice, or deep undersurface soil.
This phylum was established as Proteobacteria by Carl Woese in 1987 calling it "purple bacteria and their relatives". [3] Purple bacteria are distributed between 3 classes: Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria [4] each characterized by a photosynthetic phenotype.
The alphaproteobacteria are a subclass of the proteobacteria phylum (also known as the purple bacteria) and are classified into six orders: Rhizobiales, Rhodobacterales, Caulobacterales, Sphingomonadales, Rhodospirillades, and Rickettsiales (Figure 1) [14]. The major genera in Rickettsiales are Anaplasma, Ehrlichia, Neorickettsia, Orientia ...
Mar 11, 2009 · The α-proteobacteria represent one of the most diverse bacterial subdivisions, displaying extreme variations in lifestyle, geographical distribution and genome size.
Jun 23, 2009 · The alpha-proteobacteria represent one of the most diverse bacterial subdivisions, displaying extreme variations in lifestyle, geographical distribution and genome size.
