1. FUNGUS-LIKE PROTISTS

2. CHARACTERISTICS similar to fungi non-photosynthetic life cycle
Appearance
mode of nutrition
non-photosynthetic
life cycle
mold-like and Ameba-like

3. SLIME Molds Dominant stage: near rich sources of food
amoeba-like cells (phagocytic)
near rich sources of food
(e.g. rotting wood, piles of compost, thick wet lawns)
Scarcity of nutrients
cells aggregate → slimy mass →spore-bearing structure → amoeba-like cells

4. SLIME MOLDS
Phylum Myxomycota
Phylum Acrasiomycota

5. Phylum Myxomycota acellular or plasmodial slime molds Plasmodium
large cytoplasmic mass (multinucleate)
feeding stage
forms spores
Unfavorable conditions: “fruiting”
spore-bearing
haploid spores (meiosis)

6. Phylum Myxomycota
spores → flagellated gametes →diploid zygote (sexual reproduction) →*diploid amoeboid cells
e.g. Physarum

7. Physarum polycephalum

8. Physarum polycephalum

9. Comatricha typhoides

11. Lycolaga epinendrum “wolf’s milk”

12. Stemonitis splendens “chocolate tube slime”

14. Arcyris denudata “carnival candy slime”

15. Brefeldia maxima “tapioca slime”

16. Tubifera ferruginosa “red raspberry slime”

22. Phylum Acrasiomycota cellular slime molds pseudoplasmodium
separated by cell membranes
Cell aggregation
slug-like form
migrates to form fruiting body
spores by mitosis

23. Phylum Acrasiomycota reproduction is asexual
e.g. Dictyostelium discoideum

24. DEVELOPMENTAL STAGES OF A CELLULAR SLIME MOLD
DIctyostelium sp.