Fungi

General Fungi info

• First fungi were probably flagellated.

• First fossils – 750 million years ago

• Made of hyphae

Fungi general characteristics

• primarily terrestrial

• Filamentous

• Coenocytic: multiple nucleous

What general Fungi characteristics are related to animals

• heterotrophs

• Cell walls made of chitin

• Store sugar as glycogen

Fungal asexual reproductive

• haploid spores (condia/ sporangia)

Fungal sexual reproductive

• Plasmogamy (dikaryon)

• Karyogamy (diploid)

• Syngamy (diploid)

• Plasmogamy (dikaryon)

• fusion of cytoplasm

• 2 nucleous

• Karyogamy (diploid)

• Fusion of nucleous

• Syngamy (diploid)

• both plasmogamy and syngamy

Fungal classification

1. Chytrids

2. Zygomycetes

3. Glomeromycetes

4. Ascomycetes

5. Basidiomycetes

What are deuteromycetes and why are they called imperfect fungi?

No sexual reproductive stage was known

What are imperfect fungi classified as now?

• Ascomycota

What are mycorrhizae? 

•  mutualistic relationships between:

  • fungi

  • plant roots

What are lichen ?

• Mutualistic - association with a green algae or cyanobacteria and an ascomycota or basidiomycota

• Pioneer organisms

What are the ecological impacts?

➢Decomposers

➢Pathogens

➢Food Production