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4. Phylum Spirochaetes

4. Phylum Spirochaetes. 4. Phylum Spirochaetes. 4. Phylum Spirochaetes. Gram negative Aquatic environments ; some pathogens Unique morphology . Endoflagella. 4. Phylum Spirochaetes.

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4. Phylum Spirochaetes

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  1. 4. Phylum Spirochaetes

  2. 4. Phylum Spirochaetes

  3. 4. Phylum Spirochaetes Gram negative Aquaticenvironments; somepathogens Uniquemorphology. Endoflagella

  4. 4. Phylum Spirochaetes Treponema: animal and human hosts, microaerophilic, very sensitive to environmental stress T. pallidum: syphilis

  5. 5. Phylum Bacteroidetes

  6. 5. Phylum Bacteroidetes

  7. 5. Phylum Bacteroidetes Gram negative Complex substrates Habitats: digestive tract, hypersaline environments, water and soil Genus Bacteroides 1010 – 1011 Cells per gr in feces Rods, strict anaerobes Fermentative Gut comensals Pathogens

  8. 5. Phylum Bacteroidetes Rumen microbiota Rumen metabolism

  9. 5. Phylum Bacteroidetes Cytophaga Abundant in soils and waters Many species degrade cellulose, chitine and/or agar Fish pathogens

  10. 6. Phylum Actinobacteria

  11. High GC Gram POSITIVES 6. Phylum Actinobacteria

  12. 6. Phylum Actinobacteria Gram positive CorynebacteriumC. diphteriae(Diphterictoxin) Anaerobicfacultativerods Saprophitic and pathogenic BBE DIFTERIA pseudomembrane

  13. 6. Phylum Actinobacteria Mycobacterium Acid fastness Mycolic acids Ziehl-Neelsen staining

  14. 6. Phylum Actinobacteria Mycobacterium tuberculosis (Koch’s bacillum) TUBERCULOSIS MULTIDRUG RESISTANT TB!!! BBE

  15. 6. Phylum Actinobacteria Mycobacterium tuberculosis TUBERCULOSIS BBE Tubercles Tuberculin test Tuberculosis SIDA

  16. 6. Phylum Actinobacteria Mycobacterium leprae LEPROSY (Hansen’s disease) Tuberculoid leprosy Lepromatous leprosy BBE

  17. 6. Phylum Actinobacteria Género Streptomyces Streptomyces • Filaments without cross-walls • Mycellium and spores (conidia - no endospores) • G+C range: 63-78% (the highest) • > 500 species, soil microbiota • Pigments / geosmines • Chemoorganoheterotrophic aerobes • Antibiotic producers Mycelium Spore-bearing structures Spore formation

  18. 6. Phylum Actinobacteria Streptomyces: antibioticproduction Soil sample

  19. 7. Phylum Chlamydiae

  20. 7. Phylum Chlamydiae

  21. LIFE CYCLE 7. Phylum Chlamydiae Gram negativas Obliged intracellular parasites No PG (genes present) “Energetic parasites” (ATP) (genes present) Tansmission: Air and direct contact Elementary body: chlamydiospore

  22. 7. Phylum Chlamydiae NGU, very high incidence

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