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Cyanobacteria
Cyanobacteria (), also known as Cyanophyta, are a phylum of gram-negative bacteria that obtain energy via photosynthesis. The name ''cyanobacteria'' refers to their color (), which similarly forms the basis of cyanobacteria's common name, blue-green algae, although they are not usually scientifically classified as algae. They appear to have originated in a freshwater or terrestrial environment. Sericytochromatia, the proposed name of the paraphyletic and most basal group, is the ancestor of both the non-photosynthetic group Melainabacteria and the photosynthetic cyanobacteria, also called Oxyphotobacteria. Cyanobacteria use photosynthetic pigments, such as carotenoids, phycobilins, and various forms of chlorophyll, which absorb energy from light. Unlike heterotrophic prokaryotes, cyanobacteria have internal membranes. These are flattened sacs called thylakoids where photosynthesis is performed. Phototrophic eukaryotes such as green plants perform photosynthesis in plast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphanothece
''Aphanothece'' is a genus of cyanobacteria belonging to the family Aphanothecaceae. The genus has cosmopolitan distribution. Species: *'' Aphanothece atro-crustacea'' *'' Aphanothece bullosa'' *'' Aphanothece castagnei'' References {{Taxonbar, from=Q27438644 Chroococcales Cyanobacteria genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atelocyanobacterium
''Candidatus'' ''Atelocyanobacterium thalassa'', also referred to as UCYN-A, is a diazotrophic species of cyanobacteria commonly found in measurable quantities throughout the world's oceans and some seas. Members of ''A. thalassa'' are spheroid in shape and are 1-2µm in diameter, and provide nitrogen to ocean regions by fixing non biologically available atmospheric nitrogen into biologically available ammonium that other marine microorganisms can use. Unlike many other cyanobacteria, the genome of ''A. thalassa'' does not contain genes for RuBisCO, photosystem II, or the TCA cycle. Consequently, ''A. thalassa'' lacks the ability to fix carbon via photosynthesis. Some genes specific to the cyanobacteria group are also absent from the ''A. thalassa'' genome despite being an evolutionary descendant of this group. With the inability to fix their own carbon, ''A. thalassa'' are obligate symbionts that have been found within photosynthetic picoeukaryote algae. Most notably, the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloeothece
''Gloeothece'' is a genus of cyanobacteria belonging to the family Aphanothecaceae. The genus was first described by Carl Nägeli Carl Wilhelm von Nägeli (26 or 27 March 1817 – 10 May 1891) was a Swiss botanist. He studied cell division and pollination but became known as the man who discouraged Gregor Mendel from further work on genetics. He rejected natural selection ... in 1849. The genus has cosmopolitan distribution. Species: * '' Gloeothece confluens'' Nägeli * '' Gloeothece palea'' (Kützing) Nägeli * '' Gloeothece rupestris'' (Lyngbye) Bornet References {{Taxonbar, from=Q27438646 Chroococcales Cyanobacteria genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
