1. Domain Eukarya Modified from slide show by Kim Foglia
Kingdom: Fungi
Domain Eukarya
Modified from slide show by Kim Foglia
Domain
Bacteria
Archaea
Eukarya
Common ancestor

2. General characteristics
Classification criteria
eukaryotes
heterotrophs
feed by absorption
mostly multicellular
except unicellular yeasts
cell wall
chitin
rigid polysaccharide
sexual & asexual reproduction

3. Fungal Structure Fungal body Cells Cell wall mycelium multiple nuclei
thread-like cells
hyphae
Cells
multiple nuclei
Cell wall
chitin
just like crab shells

4. Internal structure Eukaryotic cells long, thread-like cells
chitin cell wall
septum
Eukaryotic cells
long, thread-like cells
= HYPHAE
incomplete divisions between cells
septum
multiple nuclei
pore
nuclei

5. Cool… Fungi live IN their food!
Modes of Nutrition
fungal hypha
Heterotrophic
secrete digestive enzymes
feed by absorption
predators
paralyzing prey
parasites
feeding on living creatures
decomposer
breakdown dead remains
plant cell wall
plant cell membrane
plant cell
Cool… Fungi live IN their food!
Chocolate cake, anyone?

6. Fungal Diversity Ascomycota Basidiomycota Zygomycota Chytridiomycota
Fungi

7. Ecological Roles Decomposers Symbiotic Relationships recycle nutrients
lichen
fungi + algae
pioneer species in ecosystems
makes soil from bare rock
mycorrhizae
fungi + plants
enables plants to absorb more water

8. Mycorrhizae Critical role in plant growth
extends water absorption of roots
without mycorrhizae
with mycorrhizae
Endomycorrhiza
Ectomycorrhiza

9. Reproduction Asexual Sexual budding in yeast
mycelium produces spores via mitosis
spread by wind
Sexual
joining of + & – haploid mycelium form diploid zygote
Zygote makes haploid spores via meiosis
haploid spores

10. Zygomycete (Bread Mold) Life Cycle
spores
mating strain
hypha
sporangium
MEIOSIS
mating strain
(2n) diploid
(n) haploid
FUSION of
gametangia

11. Basidiomycete Life Cycle
gills lined
with basidia
fruiting body
basidium
(n + n) dikaryotic
2n (diploid)
(n) haploid
zygote
strain
MEIOSIS
spores
FUSION of
and
hyphae
strain

12. Fairy Rings

13. The FIRST Antibiotics

14. YEAST Makes bread dough rise Makes yogurt Makes beer, champagne