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162B

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Image #   162B
Name:   Cyanobacteria endospores (Dermocarpa violacea)
Copyright:   Copyright 2009 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Cyanobacteria endospores (Dermocarpa violacea). Cyanobacteria are photosynthetic bacteria that inhabit both marine and freshwater environments. Certain members of the phylum Cyanophyta can undergo multiple fission and produce endospores (baeocytes, shown in this image) within the original parent cell wall and surrounding extracellular mucopolysaccharide matrix. Cyanobacteria undergo oxygenic photosynthesis that is known to have converted the early reducing atmosphere into an oxidizing atmosphere. This conversion to an oxygen atmosphere dramatically changed the composition of life forms on earth by promoting a rapid increase in biodiversity. Chloroplasts in plants and eukaryotic algae have evolved from cyanobacteria via endosymbiosis. Cyanobacteria are a significant component of the marine nitrogen cycle and an important primary producer in many areas of the ocean. They are also found in other habitats such as freshwater, hypersaline inland lakes and in arid areas.
Magnification*: x2,125
Type: TEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   162B Dermocarpa Dermocarpa violacea bacteria bacterium blue green alga blue green algae blue-green alga blue-green algae cyanobacteria cyanobacterium endospore endospores Pleurocapsales baeocyte baeocyte formation baeocytes binary fission endospore formation multiple fission pleurocapsalean pleurocapsalean cyanaobacteria pleurocapsalean cyanaobacterium baeocyte forming cyanobacteria baeocyte forming cyanobacterium endospore forming cyanobacteria endospore forming cyanobacterium marine bacteria marine bacterium salt water bacteria salt water bacterium marine cyanobacteria marine cyanobacterium salt water cyanobacteria salt water cyanobacterium saltwater bacteria saltwater bacterium saltwater cyanobacteria saltwater cyanobacterium cyanophyta photosynthesis photosynthetic bacteria photosynthetic bacterium endosymbiosis endosymbiotic endosymbiotic cyanobacteria endosymbiotic cyanobacterium marine nitrogen cycle nitrogen cycle extracellular matrix extracellular mucopolysaccharide extracellular mucopolysaccharide matrix mucopolysaccharide matrix oxygen evolution fresh water phytoplankton fresh water plankton freshwater phytoplankton freshwater plankton marine phytoplankton marine plankton ocean primary producer plankton primary producer salt water phytoplankton salt water plankton saltwater phytoplankton saltwater plankton sea water oxygenic photosynthesis nitrogen fixation nitrogen fixing prokaryote Pleurocapsaceae 10.01.09

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