Presentation on theme: "Microbiology B.E Pruitt & Jane J. Stein AN INTRODUCTION EIGHTH EDITION TORTORA FUNKE CASE Chapter 11, part A The Prokaryotes: Domains Bacteria and Archaea."— Presentation transcript:
Microbiology B.E Pruitt & Jane J. Stein AN INTRODUCTION EIGHTH EDITION TORTORA FUNKE CASE Chapter 11, part A The Prokaryotes: Domains Bacteria and Archaea
One circular chromosome, not in a membrane No histones No membrane bounded organelles (ribosomes) Peptidoglycan cell walls (NOT in Archaea) Binary fission
Gram-negative groups: Proteobacteria Mythical Greek god, Proteus, who could assume many shapes By RNA sequencing Proteobacteria: Human pathogens Brucella Bartonella Obligate intracellular Rickettsia Ehrlichia Have prosthacae Caulobacter Chemoautotrophic Nitrobacter Nitrosomas Fix nitrogen Rhizobium Azospirillum Produce acetic acid Acetobacter Domain Bacteria: Proteobacteria
(alpha) Proteobacteria Human pathogens: Bartonella B. henselaCat-scratch disease BrucellaBrucellosis The (alpha) Proteobacteria http://www.cdc.gov/ncidod/dbmd/diseaseinfo/brucellosis_g.htm#top The alpha-proteobacteria include nitrogen-fixing bacteria, chemoautotrophs, and chemoheterotrophs. Some members of this sub-phylum grow at low-nutrient levels (oligotrophic) and some have stalks (prosthecae). Some are pathogens and some are intracellular.
Obligate intracellular parasites: Rickettsia. Arthropod-borne, spotted fevers R. prowazekiiEpidemic typhus - lice R. typhiEndemic murine typhus - flea R. rickettsiiRocky Mountain Spotted Fever - tick The (alpha) Proteobacteria
Your consent to our cookies if you continue to use this website.