Fungi
Download
1 / 41

Fungi - PowerPoint PPT Presentation


  • 118 Views
  • Updated On :

Fungi. Chapter 31. Plantae Fungi Animalia Protista. Monera. Kingdom Fungi. About 100,000 species. Uses: medicine food Ecological value: major decomposers symbiotic relationships (N 2 fixers) Problems: some strains are deadly athletes foot destroy library books

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Fungi' - kendis


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Slide1 l.jpg

Fungi

Chapter 31


Slide2 l.jpg

Monera


Slide3 l.jpg

Kingdom Fungi

About 100,000 species

  • Uses:

    • medicine

    • food

  • Ecological value:

    • major decomposers

    • symbiotic relationships (N2 fixers)

  • Problems:

    • some strains are deadly

    • athletes foot

    • destroy library books

    • destroy crops


Some fungi are pathogens l.jpg
Some fungi are pathogens

  • About 30% of the 100,000 known species of fungi are parasites, mostly on or in plants.

    • American elms:

      Dutch Elm Disease

  • American chestnut:

  • chestnut blight

Was once one of America's most dominant trees


Some fungi are pathogens5 l.jpg
Some fungi are pathogens

  • Other fungi, such as rusts and ergots, infect grain crops, causing tremendous economic losses each year.


Some fungi are pathogens6 l.jpg
Some fungi are pathogens

  • Curse of the Mummy



Slide8 l.jpg

Kingdom Fungi

Eukaryotic, absorptive

Mostly multicellular (except few, e.g. yeast)

Heterotrophic (decomposers & parasitic)

Mycelium (body of hyphae)


Slide9 l.jpg

Kingdom Fungi

  • Firm cell walls (generally of “chitin”)

  • “Spores” as reproductive bodies

  • Unique chromosomes and nuclei

  • Includes molds, yeasts, rusts, and mushrooms


Slide11 l.jpg

  • hyphae - the vegetative bodies of most fungi, constructed of tiny filaments

  • mycelium -an interwoven mat of hyphae


Slide12 l.jpg

Human hair

Fungal hypha


Slide13 l.jpg

  • Ceonocytic hypha:

  • continuous cytoplasm mass

  • multinucleate

  • no septa


Slide14 l.jpg

Haustoria:

  • Modified hyphae found in parasitic fungi

  • Function: absorb nutrients from host

  • Some fungi even have hyphae adapted for preying on animals.


Slide15 l.jpg

Kingdom Fungi

Division Chytridiomycota

Division Ascomycota

Division Basidiomycota

Division Zygomycota

Division Deuteromycota


Slide16 l.jpg

?

Deuteromycota

Fungus-like protist



Division chytridiomycota l.jpg
Division Chytridiomycota reproductive features.

  • mainly aquatic.

  • Some are saprobes, while others parasitize protists, plants, and animals.

  • chitinous cell wall

  • flagellated zoospores

  • the most primitive fungi


Slide19 l.jpg

Division Zygomycota reproductive features.

“Zygote fungi”(bread molds)

Zygote = “mated” hyphal strands

Live in soil, water

Some are parasites

600 species


Slide20 l.jpg

Mated hyphal strands reproductive features.


Slide22 l.jpg


Slide23 l.jpg

  • The zygomycete reproductive features.Rhizopus can reproduce either asexually or sexually.


Slide24 l.jpg

Division Ascomycota reproductive features.

“Sac fungi”(truffles, yeast)

Beer > 6,000 years

Wine > 8,000 years

Lichens

Decomposers, pathogens

“yeast” describes a form of fungi (i.e., non-hyphal)

60,000 species


Slide25 l.jpg

Division Ascomycota reproductive features.

Scarlet cup

Morchella

truffles


Slide26 l.jpg

Division Ascomycota reproductive features.

Close up of cheese showing blue-green mycelium of Penicillium roqueforti.

Roquefort cheese


Slide27 l.jpg

Yeast reproductive features.


Slide28 l.jpg

Lichen reproductive features.


Slide29 l.jpg

Lichen Anatomy reproductive features.


Slide30 l.jpg


Slide31 l.jpg

Division Basidiomycota stage during the formation of ascocarps.

“Club fungi”(mushrooms)

Club-shaped reproductive structure

Food

Plant diseases

25,000 species


Slide34 l.jpg

Fairy Ring stage during the formation of ascocarps.



Slide36 l.jpg

Division Deuteromycota long-lived dikaryotic mycelium.

  • “Imperfect fungi”(penicillin)

  • Unrelated group

    • Asexual

    • No info on sexual cycle

25,000 species


Slide37 l.jpg

Penicillin long-lived dikaryotic mycelium.

Woops…

now Ascomycota


Slide38 l.jpg

Candida albicans long-lived dikaryotic mycelium.

“yeast infection”


Slide39 l.jpg

Botrytis long-lived dikaryotic mycelium.: “Noble Rot”


Slide40 l.jpg

Plant-Fungal Relationships long-lived dikaryotic mycelium.

Mycorrhizae (“fungus roots”)

90% of tree species have this association

Very important to absorption of water and nutrients


Slide41 l.jpg

Soil surface long-lived dikaryotic mycelium.

Plant roots

Mycorrhizae

Increases s.a. for absorption


ad