Dichotomous Key/Bacteria

Include the cyanobacteria (autotrophic) and eubacteria (heterotrophic).


 * Acidobacteria (acidophilic, gram positive, high G+C, common in dirt)
 * Actinobacteria (high G+C gram positive bacteria)
 * Aquificae (hyperthermophilic chemolithoautotrophs, gram negative)
 * Bacteroidetes (really diverse group with pathogens, commensals, and free-living bacteria; anaerobic, gram negative, rod shaped)
 * Chlamydiae (obligate intracellular parasites of eukaryotic cells, gram negative)
 * Chlorobi (anaerobic, photoautotrophic, gram negative green sulfur bacteria)
 * Chloroflexi (greeen nonsulfur bacteria)
 * Chrysiogenetes (chemolithoautotrophic bacterium)
 * Cyanobacteria (oxygenic photosynthetic bacteria and chloroplasts)
 * Deferribacteres (aquatic, anaerobic bacteria)
 * Deinococcus-Thermus (extremophiles, gram negative)
 * Dictyoglomi (thermophilic chemoorganotrophs)
 * Fibrobacteres (cellulose digesting, anaerobic rumen bacteria, two species)
 * Firmicutes (low G+C gram positives)
 * Fusobacteria (obligate anaerobic heterotrophs, many involved in human infections, gram negative, non-spore forming)
 * Gemmatimonadetes (Gram negative bacteria lacking DAP in cellular envelopes)
 * Nitrospira (gram negative; includes nitrite-oxicizers, thermophilic sulfate reducers, and acidophilic iron reducers)
 * Planctomycetes (ovoid gram negative bacteria, reproduce by budding)
 * Proteobacteria (purple bacteria and relatives, gram negative)
 * Spirochaetes (spiral-shaped chemoheterotrophs, gram negative)
 * Synergistetes (gram negative, rod/vibroid cell shape)
 * Tenericutes (gram positive, no cell wall)
 * Thermodesulfobacteria (thermophilic, sulfate-reducing bacteria)
 * Thermomicrobia (hyperthermophilic chemoheterotrophs)
 * Thermotogae (hyperthermophilic, obligate anaerobic, fermentive heterotrophs)
 * Verrucomicrobia (terrestrial, aquatic, some associated with eukaryotic hosts; gram negative)