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Radaisia
''Radaisia'' is a genus of coccoid cyanobacterium comprising about 10 identified species. It is a colonial cyanobacterium, the bacteria initially forming a round to irregularly shaped flat group of gelatinous or crustose cells attached to the substrate from which arise rows of pseudofilamentous cells in mucilaginous sheaths perpendicular to the initial colony. Apical cells of the pseodofilamentous sheaths are elongate compared to proximal cells in the sheath. Cell division in the genus is notably irregular, although usually perpendicular to the axis in the pseudofilament. The cells are light blue-green to reddish purple in color. Species Some species currently in this genus include: *'' R. clavata'' *'' R. confluens'' *'' R. epiphytica'' *'' R. gardneri'' *'' R. gomontiana'' *'' R. pusilla'' *'' R. violacea'' *'' R. willei'' References * Pleurocapsales Cyanobacteria genera {{cyanobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radaisia Gardneri
''Radaisia'' is a genus of coccoid Coccoid means shaped like or resembling a coccus, that is, spherical.The noun coccoid or coccoids may refer to: * a level of organization, characterized by unicellular, non-flagellated, non-amoeboid organisms, with a definite shape, in general b ... cyanobacterium comprising about 10 identified species. It is a colonial cyanobacterium, the bacteria initially forming a round to irregularly shaped flat group of gelatinous or crustose cells attached to the substrate from which arise rows of pseudofilamentous cells in mucilaginous sheaths perpendicular to the initial colony. Apical cells of the pseodofilamentous sheaths are elongate compared to proximal cells in the sheath. Cell division in the genus is notably irregular, although usually perpendicular to the axis in the pseudofilament. The cells are light blue-green to reddish purple in color. Species Some species currently in this genus include: *'' R. clavata'' *'' R. confluens'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camille François Sauvageau
Camille François Sauvageau (12 May 1861 – 5 August 1936) was a French botanist and phycologist. Sauvageau was born in Angers. He studied at the University of Montpellier, receiving his degree in natural sciences in 1884. Afterwards he served as an assistant to Charles Flahault (1884–88) in Montpellier and to Philippe Van Tieghem (1885–91) in Paris.Biodiversity Heritage Library Taxonomic literature : a selective guide to botanical publications In 1891 he received his doctorate in with the thesis "''Sur les feuilles de quelques Monocotylédones aquatiques''" (On the leaves of some aquatic monocots). In 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coccus
A coccus (plural cocci) is any bacterium or archaeon that has a spherical, ovoid, or generally round shape. Bacteria are categorized based on their shapes into three classes: cocci (spherical-shaped), bacillus (rod-shaped) and spiral ( of which there are two types: spirillum and spirochete). Coccus refers to the shape of the bacteria, and can contain multiple genera, such as staphylococci or streptococci. Cocci can grow in pairs, chains, or clusters, depending on their orientation and attachment during cell division. In contrast to many bacilli-shaped bacteria, most cocci bacteria do not have flagella and are non-motile. Cocci is an English loanword of a modern or neo-Latin noun, which in turn stems from the Greek masculine noun () meaning 'berry'. Structure The cell wall structure for cocci may vary between gram-positive (thick peptidoglycan layers) and gram-negative (thin peptidoglycan layers). While living in their host organism, cocci can be pathogenic (e.g., streptoco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
AlgaeBase
AlgaeBase is a global species database of information on all groups of algae, both marine and freshwater, as well as sea-grass. History AlgaeBase began in March 1996, founded by Michael Guiry. Text was copied from this source, which is available under Attribution 4.0 International (CC BY 4.0)licence. (Sehere. By 2005, the database contained about 65,000 names. In 2013, AlgaeBase and the Flanders Marine Institute (VLIZ) signed an end-user license agreement regarding the Electronic Intellectual Property of AlgaeBase. This allows the World Register of Marine Species (WoRMS) to include taxonomic names of algae in WoRMS, thereby allowing WoRMS, as part of the Aphia database, to make its overview of all described marine species more complete. Synchronisation of the AlgaeBase data with Aphia and WoRMS was undertaken manually until March 2015, but this was very time-consuming, so an online application was developed to semi-automate the synchronisation, launching in 2015 in conju ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleurocapsales
The Pleurocapsales are an order of coccooid 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, blu .... Pleurocapsales are characterized by having boocytes, specialized cells where multiple fission takes place. Their ecology is mainly endolytic and calcareous, they are found inside rocks and in low light conditions. Pleurocapsales were thought to be related to ''Chroococcidiopsis'' but recent work with phylogenetics of the 16S rDNA gene has shown that ''Chroococcidiopsis'' belongs to its own order Chroococcidiopsidales. Some genera within Pleurocapsales form pseudo-ramifications such as ''Pleurocapsa'' sp., ''Odorella'' sp, and all the genera within the Hyellaceae family. Historically, the order Pleurocapsales has been one of the least studied orders of cyanobacteria, due t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
