Volume 1: The Archaea, Cyanobacteria, Phototrophs and Deeply Branching Genera

Archaea - divided into two kingdoms

a. Crenarchaeota - diverse kingdom that contains thermophilic and hyperthermophilic

b. Euryarchaeota - contains primarily mathanogenic and halophilic bacteria and also

Eubacteria - complex with several small groups of phototrophs, cyanobacteria, and deeply branching eubacteria

Based on Bergeys' manual Domain Bacteria contains six phyla in volume 1

• • Phylum Aquificiae- earliest branch of bacteria that contain autotrophs which utilize hydrogen for energy production

• Phylum Thermotogae - anaerobic, thermophilic, and fermentative Gram negative bacteria

• Phylum “ Deinococcus Thermus ” - radiation resistant bacteria

• Phylum Chloroflexi - green non-sulfur bacteria that carries out anoxygenic photosynthesis

• Phylum Cyanobacteria - oxygenic photosynthetic bacteria

• Phylum Chlorobi - green sulfur bacteria that carry out anoxygenic photosynthesis

Volume 2 - Gram negative proteobacteria (purple bacteria)

Based on the nutritional type and rRNA data Gram negative- Proteobacteria have been classified into five classes.

• •  Alphaproteobacteria -oligotrophic forms including the purple nonsulfur photosynthesizers

•  Betaproteobacteria - metabolically similar to alphaproteobacteria

•  Gammaproteobacteria - diverse methods of energy metabolism

•  Deltaproteobacteria - includes predators and the fruiting myxobacteria

•  Epsilonproteobacteria - contains pathogens