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GAMMA - GAMMAPROTEOBACTERIA PROTEOBACTERIA)...

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GAMMA-PROTEOBACTERIA ( γ  -PROTEOBACTERIA)  --some names in this group are  order names. Up to now the names have been genus names. If it is in italics, it is a genus. If it is  in all caps but not in bold, it is an order. The all caps in bold are groups larger than orders.(If you  think this is confusing, I do too, but this is what our book does!) a.  Beggiatoa alba —only species in the genus. Grows in aquatic sediments and is motile by  gliding. It uses hydrogen sulfide for energy and stores sulfur granules as cellular inclusions.    b.  Francisella— small, pleomorphic bacteria that require media enriched with blood or tissue  extracts.  F. tularensis  causes tularemia (rabbit fever). c. PSEUDOMONALES (an order)—all are gram-negative and aerobic. Shape is rod or coccus.  1)  Pseudomonas —aerobic rods, motile by flagella. Many produce pigments which diffuse into 
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