1. The Prokaryotes: Domains Bacteria and Archaea
Chapter 11, part B
The Prokaryotes: Domains Bacteria and Archaea

2. The  (beta) Proteobacteria

3. The  (beta) Proteobacteria
Thiobacillus
Chemoautotrophic, oxidize sulfur: H2S  SO42–
Sphaerotilus
Chemoheterotophic, form sheaths
Figure 11.5

4. The  (beta) Proteobacteria
Neisseria
Chemoheterotrophic, cocci
N. meningitidis
N. gonorrhoeae
Spirillum
Chemoheterotrophic, helical
Figure 11.4 & 6

5. The  (beta) Proteobacteria
Bordetella
Chemoheterotrophic, rods
B. pertussis
Burkholderia. Nosocomial infections
Zoogloea. Slimy masses in aerobic sewage-treatment processes

6. The  (gamma) Proteobacteria

7. The  (gamma) Proteobacteria
Pseudomonadales:
Pseudomonas
Opportunistic pathogens
Metabolically diverse
Polar flagella
Azotobacter and Azomonas. Nitrogen fixing
Moraxella. Conjunctivitis
Figure 11.7

8. The  (gamma) Proteobacteria
Legionellales:
Legionella
Found in streams, warm-water pipes, cooling towers
L. pneumophilia
Coxiella
Q fever transmitted via aerosols or milk
Figure 24.15b

9. The  (gamma) Proteobacteria
Vibrionales:
Found in coastal water
Vibrio cholerae causes cholera
V. parahaemolyticus causes gastroenteritis
Figure 11.8

10. The  (gamma) Proteobacteria
Enterobacteriales (enterics):
Peritrichous flagella, facultatively anaerobic
Enterobacter
Erwinia
Escherichia
Klebsiella
Proteus
Salmonella
Serratia
Shigella
Yersinia

11. The  (gamma) Proteobacteria
Figure 11.9a, b

12. The  (gamma) Proteobacteria
Pasteurellales:
Pasteurella
Cause pneumonia and septicemia
Haemophilus
Require X (heme) and V (NAD+, NADP+) factors

13. The  (gamma) Proteobacteria
Beggiatoa
Chemoautotrophic, oxidize H2S to S0 for energy
Francisella
Chemoheterotrophic, tularemia