Fungi - PowerPoint PPT Presentation

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Fungi

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Title: Fungi


1
A Presentation on Fungi
  • Presented by
  • Farhana suvro

2
Fungi are eukaryotic, spore-producing,chemohetero
trophs which reproduce by sexually or
asexually.Egyeast,mold etc.-fungi included in
kingdom fungi-study of fungi called
mycology(Greek mykesmushroomlogosdiscourse)
Common ancestor
3
Characteristics of Fungi
  • Eukaryotic (having membrane bound nucleus)
  • Lack chlorophyll (photosynthesis not occurred)
  • Cell wall contain chitin
  • Having 80s ribosome
  • Having thallus shaped have no tissue.
  • Cell membrane contain sterol(Ergosterol)
  • Mostly Multicellular
  • -Exception yeast(unicellular)
  • Heterotrophic by secreting enzyme in environment
  • Reproduction (both sexually Asexually)
  • Stored food glycogen

4
Classification of Fungi
5
zygomycota
chytridiomycota
Basidiomycota
Glomeromycota
Ascomycota
6
Classification of Fungi
  • Chytridiomycota
  • -predominantly aquatic
  • -flagellated zoospore
  • Zygomycota
  • -produce diploid zygospore
  • -common mold
  • Glomeromycota
  • -Exhibits symbiosis
  • -live in roots of land plant
  • Ascomycota
  • -contain ascus(resembles cup)
  • -produce antibiotic
  • -also called sac fungi
  • Basidiomycota
  • -contain basidium(resembles club)
  • -most common fungus mushroom

7
Morphology of Fungi
Mycelium
8
Morphology of Fungi
  • Consist of long filaments of cells joined
    together.
  • These filaments called hyphae(singular
    hypha,structural unit of fungi)
  • Hyphae grow form mycelium(favorable
    environment)
  • Have no tissue, having thallus shape.
  • Hypha contain cross wall called septate hypha.
  • Hypha contain no cross wall called coenocytic
    hypha.
  • Portion of hypha contain nutrients called
    vegetative hypha
  • Portion of hypha contain reproductive part called
    reproductive/aerial hypha.

9
Reproduction of Fungi
10
Reproduction of Fungi
  • Asexual Reproduction
  • -Does not involve karyogamy meiosis
  • -producing asexual spore
  • -completed by binary fission budding
  • -Both process produce genetically identical
  • daughter cell.

Budding
Binary fission
11
Sexual Reproduction
  • -producing sexual spore.
  • -involved plasmogamy(a haploid donar
    cell()
  • penetrates the cytoplasm of a haploid
    recipient(-)cell
  • -involved karyogamy(fusion of two
    nuclei() (-)
  • to form diploid zygospore)
  • -involved meiosis(redution division which
    produce 4
  • daughter cell from 1 parent cell.

12
Importance of Fungi in Genetic Engineering
Biotechnology
  • Saccaromyces cerevisiae (yeast) used as model
    organism in the study of genome analysis
  • Yeast contain plasmid used as vector.

yeast
13
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