Eukaryotic Organelles and Prokaryotic Symbiont1

Eukaryotic Organelles and Prokaryotic Symbiont1 -...

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Eukaryotic Organelles and Prokaryotic Symbionts Chloroplasts and mitochondria still retain their own DNA , and have the diversity of structure and photosynthetic pigments that supports the idea that the endosymbiosis events occurred independantly several times. The photosynthetic pigments (see Table 1) in the red, brown, golden-brown, and green algae are very different, lending support for the hypothesis of several different, independent endosymbiotic events. Table 1. Photosynthetic pigments of monerans, algae, and plants. Prokaryote groups are shown in red, protists in blue, and vascular plants in purple. Taxonomic Group Photosynthetic Pigments Cyanobacteria chlorophyll a , chlorophyll c , phycocyanin, phycoerythrin Chloroxybacteria chlorophyll a , chlorophyll b Green Algae (Chlorophyta)
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Unformatted text preview: chlorophyll a , chlorophyll b , carotenoids Red Algae (Rhodophyta) chlorophyll a , phycocyanin, phycoerythrin, phycobilins Brown Algae (Phaeophyta) chlorophyll a , chloorphyll c, fucoxanthin and other carotenoids Golden-brown Algae (Chrysophyta) chlorophyll a , chlorophyll c, fucoxanthin and other carotenoids Dinoflagellates (Pyrrhophyta) chlorophyll a , chlorophyll c , peridinin and other carotenoids Vascular Plants chlorophyll a , chlorophyll b , carotenoids The DNA, ribosomes , biochemistry, and reproduction of chloroplasts and mitochondria are remarkably bacteria-like. Some living eukaryotes, such as the "amoeba" Pelomyxa (also known as Chaos ), lack mitochondria, having instead endosymbiotic bacteria that perform mitochondrial duties of ATP generation....
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This note was uploaded on 11/29/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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