kingdom of fungi•fungi are consist of masses of tubular structures called (hyphae) •some fungi...

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Kingdom Of Fungi Lab7

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Page 1: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

Kingdom Of FungiLab7

Page 2: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

Fungal characteristics• Fungi are group of eukaryotic (have nucleus and organelles

including mitochondria and endoplasmic reticulum )• The cell wall is composed of large amount of chitin (carbohydrate ).

Page 3: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

• Most fungi are multicellular (molds) some are unicellular (yeasts).• Mold fungi grow as long filaments of cells that give rise to visible

colonies.

• Yeast colonies on agar similar to bacterial colonies (mucoid).

Page 4: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

•Fungi are consist of masses of tubular structures called (hyphae)

•Some fungi have cross walls or septa which divide the filaments into sections while other fungi lack septa (coenocytic)

•Fungi are heterotrophic (non-photosynthetic organisms) •All fungi require water and oxygen to grow and reproduce.•The optimal temperature of most fungi is 25oC.

Page 5: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

• Reproduction. Fungi reproduce sexually and/or asexually to produce spores.!Asexually:•Spores ex:

"Conidiospore

"Chlamydospore

"Sporangiospore

•Budding (yeast)

•Fragmentation

Page 6: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

•Reproduction.!Sexually.•Fungi are classified by their sexual reproductive structures into 4 phyla :1-Zygomycota •Sexual spores produced by conjugation when (+) hypha and (-) fuse is called zygospores.•Ex: Rhizopus sp.

Page 7: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

2-Ascomycota•Ascospores contained in an ascus.•Ex: Aspergillus sp. , Penicillium sp.! Saccharomyces cerevisiae

Bud

Page 8: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

3-Basidiomycota •Basidium is sexual reproductive structure that make basidiospores.•Ex: Agaricus sp.

Page 9: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

4-Deuteromycota •Sexual reproduction not yet observed.•Ex: Fusarium sp.

Page 10: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

Purification of Fungi by Disc Transfer

• Use a cork borer or Pasture pipette.• Flame Pasteur pipette using alcohol and allow to

cool. • Cut few discs from the edge of an actively

growing fungal colony.• Inoculate it (surface facing down) on the center

another media plate with the help of flamed forceps • Incubate it for 3-5 days• Pure culture of the organism will grow.

Page 11: Kingdom Of Fungi•Fungi are consist of masses of tubular structures called (hyphae) •Some fungi have cross walls or septawhich divide the filaments into sections while other fungi

1- Use a Pasture pipette to pick up some material from the colony

2- A fungal colony Disc transferred Aseptically to the centre by loop

A sterile media plate (PDA) being inoculated

3- Incubation at 26oC for 5 days

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