Fungal-like Protists

General Overview:

	Oomycota	Myxomycota	Dictyosteliomycota
Compostition of cell walls	Cellulose	None	Cellulose in Sporangial Stage only
Type of Organization	Coenocytic Hyphae	Plasmodium	Psudoplasmodium
Motility	Flagellated	Ameboid or Flagellated	Ameboid
Polyploidy	Diploid (2N)	Diploid (2N)	Diploid (2N)
Food Source	Heterotrophic: saprophytes and paracites	Heterotophic: Bacteria Eating	Heterotorphic: Bacteria Eating

Domain: Eukarya

Kingdom: Protista

Major Phylums (divisions):

Cell walls made of cellulose
Coenocytic hyphae
Motile cells with one tinsel and one whiplash flagellum insterted laterally or anterior
Diploid (2N) with gametic meiosis
Examples:
Saprolegnia ("ich" on fish)
- Has both asexual (zoospore) and sexual (gametes) reporduction
Plasmopara viticola ("downy mildew of grape")
- Devistated the french wine industry; saved by the Bordeaux Mixture
Phytophthora infestans ("late Blight of Potato")
- Caused the Irish potato famine of the 1840's

Known as plasmodial or acellular slime molds
Vegitative (no reproducing) stage is a multinuclate "blob" of protoplasm called a plasmodium
Reproduction:
1. Plamodium forms Sproangia where meiosis takes place
2. Spores germinate to form myxamoebae or swarm cell

Known as cellular slime molds
Vegitative state is an aggregation of amoebae called a psudoplasmodium or slug (grex)
Reproduction:
1. Psudoplasmodium agregates togethers and the cells defriencitate into stalk or sporangial cells.
2. Asexual reproduction forms sorocarps
3. Sexual reprodiction forms macrocysts

Works Cited: Robert Egan, Bio 1450 power point