2. Fungus Chapter 31

3. Not as innocent as they look!

4. Mucor Diabetes

5. Sporotrichosis

6. Madura Foot

7. Severe Athletes Foot

9. Characteristics Eukaryotic Majority multicellular (except yeast) Lack chlorophyll Chitin Heterotrophic; they digest food outside the body and absorb it (saprobes).

10. Study this!

11. Body structure Mass of netlike filaments called hyphae. Entire mass of hyphae is called the mycelium. Hyphae –divided into cells by cross walls called septa –continuous cells called coenocytic hyphae –Embedded into a plant called haustoria

14. Coenocytic

15. Haustoria

16. Septate

17. Reproduction Sexual or asexual spores. Sexual reproduction occurs during difficult conditions. Under favorable conditions asexual spores are produced Adult bodies of most fungi are haploid.

18. Diversity of Fungi: Classified into units called Divisions. 3 divisions based primarily on variations of sexual reproduction and structures.

19. Division Zygomycota: Terrestrial fungi that live in soil or on decaying plant or animal material. Coenocytic hyphae, with many haploid nuclei. Asexual spores produced by sporangia Zygosporangia (resistant bodies) form during sexual reproduction

22. 2. Division Ascomycota: Sac fungi. Range from yeast to large cup fungi. A small sac called an asci is the sexual reproductive structure Asci are packed into large fruiting structures called ascocarps.

26. Multicellular septate hyphae Conidia are asexual spores Ascospores are sexual spores. Important in decomposing lignin and collagen of dead plants and animals. Some are mutualistic (ex. lichen) Many are parasitic to plants (ex. powdery mildew and Dutch elm disease

29. 3.Division Basidiomycota: Club fungus Ex. Shelf fungi, puffballs and stink horns Sexual reproductive structure called the basidium. The club like shape gives the name to some of the most common fungal types in this division.

31. Division Deuteromycota: These organism have no known sexual life style. Fungi imperfecti Ex. Penicillium

33. Lichens: Symbiotic associations of millions of algal cells tangled in a lattice of fungal hyphae. Soredia, small clusters of hyphae with embedded algae

34. Lichens

35. Mycorrhizae Mutualistic association of a fungus and a root. 90% of the fungi is basidiomycota

36. Mycorrhizae