Actinomyces

Actinomyces: Genus of the actinobacteria
# Prokaryotic organisms
#Actinomyces colonies : form fungus-like branched networks of hyphae
# known as a ray fungus
#Scientific classification
# life cycle of sporulating actinomycetes
#Characteristics and Functions of Actinomycetes
# Generally anaerobic bacteria

1. Actinomyces Presented By : Khushbu’s Microbiology

2. Actinomyces :   Genus of the actinobacteria   Prokaryotic organisms : Classified as bacteria, but are unique enough to be discussed as an individual group. Micrograph of actinomycosis,  Gram stain

3. Actinomyces :   Genus of the actinobacteria   Genus of the actinobacteria class of bacteria.  Gram-positive    Facultatively anaerobic  Except  A.Meyeri   & A. Israelii   :  obligate anaerobe Grow best under anaerobic conditions .

4. PROPERTIES Actinomyces   : species may form endospores, Individual bacteria : rod shaped,   Actinomyces  colonies : form fungus-like branched networks of hyphae.  The aspect of these colonies initially led to the incorrect assumption that the organism was a fungus and to the name  actinomyces , "ray fungus" :from  greek   actis , ray, beam and  mykes , fungus.

5. Actinomyces Actinomyces Scientific classification Domain: Bacteria Phylum: Actinobacteria Class: Actinobacteria Order: Actinomycetales Family: Actinomycetaceae Genus: Actinomyces Harz 1877 Scanning electron micrograph of  Actinomyces israelii

6. life cycle of sporulating actinomycetes Order Actinomycetales Any member of a heterogeneous group of gram-positive Generally anaerobic bacteria noted for a filamentous and branching growth pattern that results, in most forms, in an extensive colony, or mycelium. The mycelium in some species may break apart to form rod- or coccoid -shaped forms.

7. Actinomycete Order Actinomycetales Any member of a heterogeneous group of gram-positive Generally anaerobic bacteria noted for a filamentous and branching growth pattern that results, in most forms, in an extensive colony, or mycelium. The mycelium in some species may break apart to form rod- or coccoid -shaped forms.

8. Characteristics and Functions of Actinomycetes Structure Prokaryotic Size 1–2 μ m diameter Morphology Filamentous lengths of cocci Gram stain Gram positive Respiration Mostly aerobic, can be anaerobic Habitat Soil or marine Abundance, marine isolates 5–40 CFU/ml Abundance, soils 10 6 –10 8 /g

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