Cyanobacteria

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(transferred description from Eubacteria phylogeny)
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The blue-green ‘algae’, probably the most familiar bacterial clade, and one of the few to be recognised before the advent of molecular data (the other was the [[Spirochaetes]]). Characterised by oxygenic photosynthesis with [[chlorophyll]] ''a''. Flagella absent. A single genus, ''Gloeobacter'', is recognisably basal to all others in lacking [[thylakoid]]s. The clade Phycobacteria contains all other cyanobacteria, and has the chlorophyll contained in thylakoids. Phycobacteria have traditionally been divided into five orders on the basis of morphological colony characters. [[Chloroplast]]s are derived from Phycobacteria, though from which subclade is still unknown.
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<center><big><big><big>Cyanobacteria - "Blue-Green Algae"</big></big></big></center>
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<br>
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[[Image:Anabaena sperica.jpg|thumb|300px|center|''Anabaena sperica'', a filamentous cyanobacterium ([[Phycobacteria]], [[Nostocales]], [[Nostocaceae]])]]
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<br>
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<table border="1" cellpadding="3" cellspacing="1" width="100%" >
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<tr><th bgcolor="#CCCCCC" colspan="2">'''Cyanobacteria'''</th></tr>
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<tr>
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<td align="center" width="200" valign="top" >'''Linnaean Hierarchy'''</td>
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<td align="center" width="400" valign="top" >'''Local Cladogram'''</td>
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</tr>
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<tr>
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<td align="justify" valign="top" >
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[[Domain]]: [[Eubacteria]]<br>
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[[Division]]: '''Cyanobacteria'''<br>
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[[Order]]s:
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* "Chroococcales"<nowiki>*</nowiki><br>
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* "Pleurocapsales"<nowiki>*</nowiki><br>
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* "Oscillatoriales"<nowiki>*</nowiki><br>
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* [[Nostocales]]
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* [[Stigonematales]]
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<nowiki>*</nowiki> = not supported by phylogenetic studies.
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</td>
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<td align="justify" valign="top">
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[[LUCA]]
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|--[[Eubacteria]] (''note'')
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|  |--[[Clostridea]]
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|  `--'''[[Cyanobacteria]]'''
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|        see [[#Phylogeny|phylogeny section]] (below) for subgroups
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`--[[Neomura]]
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    |--[[Archaea]]
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    `--[[Eukarya]]
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(''note'': See [[Eubacteria phylogeny]] page for more on Eubacteria)
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</td>
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</tr>
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<tr>
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<td align="justify" valign="top" colspan="2" >
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'''Stratigraphic Range:''' ~[[Mesoarchean]] to [[Recent]].<br>
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'''Geographic Range:''' Ubiquitous<br>
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'''Environment:''' almost every habitat, [[marine]], [[fresh water]], and [[terrestrial]]<br>
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'''Ecology:''' Single celled, colonial, and Algal mats and mounds ([[Stromatolite]]s<br>
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'''Geographic Range:''' Primary producers ([[Autotroph]]s)<br>
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</td>
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</tr>
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</table>
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<br>
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The blue-green ‘algae’, probably the most familiar bacterial clade, and one of the few to be recognised before the advent of molecular data (the other was the [[Spirochaetes]]). Characterised by oxygenic [[photosynthesis]] with [[chlorophyll]] ''a''. Flagella absent. A single genus, ''Gloeobacter'', is recognisably basal to all others in lacking [[thylakoid]]s. The clade Phycobacteria contains all other cyanobacteria, and has the chlorophyll contained in thylakoids. Phycobacteria have traditionally been divided into five orders on the basis of morphological colony characters. [[Chloroplast]]s are derived from Phycobacteria, though from which subclade is still unknown.
== Phylogeny ==
== Phylogeny ==
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'''Credits'''
'''Credits'''
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CKT060929
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CKT060929, page modified MAK061101

Revision as of 10:10, 1 October 2006

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