Lab Exercise 11 : Fungi This gives new meaning to the old saying, “There’s a fungus among us!”

Lab Exercise 11:

Fungi

This gives new

meaning to the old saying,

“There’s a fungus

among us!”

Station 1. Rhizopus stolonifer macroscopic

Rhizopus spoiled fruit(Station 1 continued)

Station 2. Rhizopus asexual and sexual sporesAsexualsporangio

zygosporangium

Sexual

(containing zygospores)

Opposite mating types join hyphae

Asexual

Station 3. Peziza (common cup fungus)

Station 4. Morchella, the morel

Station 5. Yeast (Saccharomyces cerevisiae)

a. Method of reproduction?

Asexual or sexual?

Conditions?

b. Fermentation by-product used here?

c. Fermentation by-product used here?

Answers: a. budding, asexual, good conditions

b. CO2 gas

c. ethyl alcohol

Station 6. Claviceps purpurea

(ergot of rye disease)

Station 7. Mushrooms

a. Name of this part?

b. Structures? Spores produced? Asexual or sexual?

c. structure?

d. Name of this part?

Answers: a. pileus b. lamellae with sexual basidiospores c. annulus d. stipe

Station 8. Puffballs

Station 9. Bracket fungi

Station 10. Corn Smut

Station 11. Tinea (ringworm)

Station 12: Candida albicansCandida albicans (pathogenic yeast) can cause oral thrush

Station 13. Penicillium macroscopic

Asexual Spores

1. Rhizopus sporangia and sporangiospores

Asexual Spores

2. ‘’Budding yeast’ blastospores

Asexual Spores

3. Corn Smut chlamydospores

Asexual Spores

4. Geotrichium candida arthrospores

Asexual Spores

5. Penicillium conidiospores

Sexual Spores

1. Rhizopus conjugation

immature

mature zygosporangia

Sexual Spores

2. Peziza ascospores

8

Sexual Spores

3. Schizosaccharomyces ascospores

Sexual Spores

4. Coprinus mushroom basidiospores

Wet Mount: Live Yeast cells budding

Fungal Microcultures

Penicillium

Rhizopus nigricans