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4. Phylum Spirochaetes L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 4. Phylum Spirochaetes L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 4. Phylum Spirochaetes Gram negative Aquatic environments; some pathogens Unique morphology. Endoflagella L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 4. Phylum Spirochaetes Treponema: animal and human hosts, microaerophilic, very sensitive to environmental stress T. pallidum: syphilis L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 5. Phylum Bacteroidetes L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 5. Phylum Bacteroidetes L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 5. Phylum Bacteroidetes Gram negative Complex substrates Habitats: digestive tract, hypersaline environments, water and soil Genus Bacteroides Rods, strict anaerobes Fermentative 1010 – 1011 Cells per gr in feces Gut comensals Pathogens L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 5. Phylum Bacteroidetes Rumen microbiota Rumen metabolism L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 5. Phylum Bacteroidetes Cytophaga Abundant in soils and waters Many species degrade cellulose, chitine and/or agar Fish pathogens L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria High GC Gram POSITIVES L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria Gram positive Corynebacterium C. diphteriae (Diphteric toxin) Anaerobic facultative rods BBE Saprophitic and pathogenic DIFTERIA pseudomembrane L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria Mycobacterium Acid fastness Mycolic acids Ziehl-Neelsen staining L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria Mycobacterium tuberculosis (Koch’s bacillum) TUBERCULOSIS MULTIDRUG RESISTANT TB!!! BBE L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria Mycobacterium tuberculosis TUBERCULOSIS BBE Tubercles Tuberculosis Tuberculin test SIDA L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria Mycobacterium leprae LEPROSY (Hansen’s disease) Tuberculoid leprosy Lepromatous leprosy BBE L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 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 L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 6. Phylum Actinobacteria Streptomyces: antibiotic production Soil sample L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 7. Phylum Chlamydiae L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 7. Phylum Chlamydiae L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 7. Phylum Chlamydiae LIFE CYCLE Gram negativas Obliged intracellular parasites No PG (genes present) “Energetic parasites” (ATP) (genes present) Tansmission: Air and direct contact Elementary body: chlamydiospore L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 7. Phylum Chlamydiae NGU, very high incidence L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014 L. 6: Bacteria Domain (III). 2nd Biology ARA 2013-2014
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