Chlorophyceae 100 genera freshwater and marine Primary endosymbiosis

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Presentation transcript:

Chlorophyceae 100 genera freshwater and marine Primary endosymbiosis Chlorophylls a+b eyespot

Chlamydomonas

Chlamydomonas glycoprotein cell wall

eyespot Light sensitive organelle constisting of: Cell wall Light sensitive organelle constisting of: Oil droplets with red-orange carotenoids inside the chloroplast membrane (CE) Light sensitive rhodopsin layer in cell membrane (PM) overlaying the eyespot Chlamydomonas – schematical section from van den Hoek et al. 1995

Chlorophyceae-flagellates

Haematococcus has astaxanthin rich deep red cysts

genera from freshwater plankton Coelastrum Pediastrum Pandorina Scenedesmus Gonium

Volvox aureus

Oogam haplont Volvox

Chlorophyceae Morphology – flagellates - filamentous Flagella - smooth Chloroplasts with two membranes Chloroplast pigments – chlorophyll a + b Storage product – starch

Class Trebouxiophyceae lichen algae - lavalger Primary endosymbiosis Chlorophylls a+b

Trebouxia, isolated from lichen Chlorella Microthamnion Prasiola

Trebouxiophyceae Morphology – coccoids Flagella - lacking Chloroplasts with two membranes Chloroplast pigments – chlorophyll a + b Storage product – starch