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Protista
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Three Domains Fig 27.2
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Tentative Phylogeny Fig 28.8
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Phagocytosis Fig 8.19a Many protists engulf cells, debris (Food) by phagocytosis
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Amoeba phagocytosis with pseudopodia
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Endosymbiotic Origins of Eukarya
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Protistan Systematics in flux Figs. 28.6; 28.7
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Still need to account for:
9 + 2 flagella and cilia which are analogous to prokaryotic flagella The origins of mitosis and meiosis which also utilize microtubules
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Origins of Mitosis Fig
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Archezoans may provide clues to early eukaryotes.
These organisms have relatively simple cytoskeleletons and mitochondria Simplified mitochondria, without electron transport chains, Their ribosomes have some prokaryote characteristics They have two haploid nuclei ( no diploid stage)
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Giardia - a diplomonad
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Giardia Cyst
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Figure 28.3 Protist diversity
Fig a Diplomonads Parabasalids Excavata Euglenozoans Dinoflagellates Apicomplexans Alveolates Ciliates Diatoms Chromalveolata Golden algae Stramenopiles Brown algae Oomycetes Chlorarachniophytes Forams Rhizaria Radiolarians Red algae Chlorophytes Green algae Archaeplastida Figure 28.3 Protist diversity For the Cell Biology Video Demonstration of Chemotaxis, go to Animation and Video Files. Charophyceans Land plants Slime molds Amoebozoans Gymnamoebas Entamoebas Nucleariids Unikonta Fungi Opisthokonts Choanoflagellates Animals
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Gymnamoeba Pseudopodia Ectoplasm, Endoplasm
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Endoplasm Ectoplasm
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Amoeba slide
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Gymnamoeba
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Entamoeba
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Myxogastrida
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Plasmodial Slime Molds
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Dicyostelida
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Cellular Slime Molds
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Figure 28.3 Protist diversity
Fig a Diplomonads Parabasalids Excavata Euglenozoans Dinoflagellates Apicomplexans Alveolates Ciliates Diatoms Chromalveolata Golden algae Stramenopiles Brown algae Oomycetes Chlorarachniophytes Forams Rhizaria Radiolarians Red algae Chlorophytes Green algae Archaeplastida Figure 28.3 Protist diversity For the Cell Biology Video Demonstration of Chemotaxis, go to Animation and Video Files. Charophyceans Land plants Slime molds Amoebozoans Gymnamoebas Entamoebas Nucleariids Unikonta Fungi Opisthokonts Choanoflagellates Animals
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Excavata Chromalveolata Chlorarachniophytes Rhizaria Foraminiferans
Fig. 28-UN3 Excavata Chromalveolata Chlorarachniophytes Foraminiferans Rhizaria Radiolarians Archaeplastida Unikonta
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Foraminifera CaCO3 test Axopodia zooplankton
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Foram slide
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Foram tests
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Actinopoda- (Radiolaria)
SiO2 test Axopodia Zooplankton
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Radiolarian (live) with axopodia
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Radiolaria slide
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Radiolaria close up
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Figure 28.3 Protist diversity
Fig a Diplomonads Parabasalids Excavata Euglenozoans Dinoflagellates Apicomplexans Alveolates Ciliates Diatoms Chromalveolata Golden algae Stramenopiles Brown algae Oomycetes Chlorarachniophytes Forams Rhizaria Radiolarians Red algae Chlorophytes Green algae Archaeplastida Figure 28.3 Protist diversity For the Cell Biology Video Demonstration of Chemotaxis, go to Animation and Video Files. Charophyceans Land plants Slime molds Amoebozoans Gymnamoebas Entamoebas Nucleariids Unikonta Fungi Opisthokonts Choanoflagellates Animals
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Diplomonads Excavata Parabasalids Euglenozoans Fig. 28-03b
Figure 28.3 Protist diversity
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Kinetoplastida
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Trypanosoma sp.
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Trypanosoma in blood
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Euglenophyta
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Figure 28.3 Protist diversity
Fig a Diplomonads Parabasalids Excavata Euglenozoans Dinoflagellates Apicomplexans Alveolates Ciliates Diatoms Chromalveolata Golden algae Stramenopiles Brown algae Oomycetes Chlorarachniophytes Forams Rhizaria Radiolarians Red algae Chlorophytes Green algae Archaeplastida Figure 28.3 Protist diversity For the Cell Biology Video Demonstration of Chemotaxis, go to Animation and Video Files. Charophyceans Land plants Slime molds Amoebozoans Gymnamoebas Entamoebas Nucleariids Unikonta Fungi Opisthokonts Choanoflagellates Animals
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Alveolates
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Ciliophora
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Paramecia in yeast
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Paramecia prepared slide
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Paramecia conjugation slide
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Didinium eating paramecia
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Apicomplexa
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White blood cells
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Plasmodium slide
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Oomycota Water “molds” Hyphae Diploid dominant Swimming zoospores
Cellulose cell walls Saprobic & disease causing Potato blight Sudden Oak Death
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Attacks goldfish
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Saprolegnia
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Figure 28.3 Protist diversity
Fig a Diplomonads Parabasalids Excavata Euglenozoans Dinoflagellates Apicomplexans Alveolates Ciliates Diatoms Chromalveolata Golden algae Stramenopiles Brown algae Oomycetes Chlorarachniophytes Forams Rhizaria Radiolarians Red algae Chlorophytes Green algae Archaeplastida Figure 28.3 Protist diversity For the Cell Biology Video Demonstration of Chemotaxis, go to Animation and Video Files. Charophyceans Land plants Slime molds Amoebozoans Gymnamoebas Entamoebas Nucleariids Unikonta Fungi Opisthokonts Choanoflagellates Animals
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Alveolates Chromalveolata Stramenopiles
Fig c Dinoflagellates Apicomplexans Alveolates Ciliates Diatoms Chromalveolata Golden algae Stramenopiles Brown algae Figure 28.3 Protist diversity Oomycetes
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Chlorarachniophytes Rhizaria Forams Radiolarians Fig. 28-03d
Figure 28.3 Protist diversity
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Red algae Chlorophytes Green algae Archaeplastida Charophyceans
Fig e Red algae Chlorophytes Green algae Archaeplastida Charophyceans Land plants Figure 28.3 Protist diversity
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Slime molds Gymnamoebas Entamoebas Unikonta Nucleariids Fungi
Fig f Slime molds Amoebozoans Gymnamoebas Entamoebas Nucleariids Unikonta Fungi Opisthokonts Figure 28.3 Protist diversity Choanoflagellates Animals
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Diplomonads Excavata Parabasalids Kinetoplastids Euglenozoans
Fig. 28-UN1 Diplomonads Parabasalids Excavata Kinetoplastids Euglenozoans Euglenids Chromalveolata Rhizaria Archaeplastida Unikonta
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