Cyanobacteria Blue Green Algae and Blue Green Bacteria

Cyanobacteria Blue Green Algae and Blue Green Bacteria

Cyanobacteria Blue Green Algae and Blue Green Bacteria -1. Possess two photosystems PS I and PS II. 2. Photosynthetic pigments are Chl a, phycobiliproteins and carotenoids.Phycobiliproteins are phycocyanin.(PC), allophycocyanin (AP), allophycocyanin B (APB) and phycoerythrin (PE).

3. Electron source is water. Some species can use reduced S compounds (anoxygenic photosynthesis with only one photosystem ).4. Respiration is aerobic when growing photosynthetically.5.Genera: Synochococus, Pseudanataena, Gloeobacter. 6. Growth can occur in the dark with the utilization of storage compounds. Some species grow heterotrophically in the dark in symbiosis with cycads. Some strins can fix N2 in the dark (unique feature).

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Phototrophs Chlorobiaceae - Chlorobacteriacae Green S Bacteria Chloroflexaceae - Green Filamentous Bacteria Chromatiaceae - Thiohodaceae - Purple S Bacteria Rhodospirillaceae - Athiorhodaccae - Purple non-S Bacteria Cyanobacteria - Bule Green Algae - Blue Green Bacteria Prochlorophyta Chemotrophs Obligate Chemolithotrophs Facultative Chemolithotrophs Methanogenesis

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