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Pyrenomonadales
Pyrenomonadales is an order of Cryptophyta The cryptophyceae are a class of algae, most of which have plastids. About 220 species are known, and they are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened in shape, .... References Cryptomonads Bikont orders {{Cryptomonad-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodomonas Salina
''Rhodomonas'' is a genus of cryptomonads. It is characterized by its red colour, the square-shaped plates of its inner periplast, its short furrow ending in a gullet, and a distinctly shaped chloroplast closely associated with its nucleomorph. Historically, ''Rhodomonas'' was characterized by its red chloroplast alone, but this no longer occurs as its taxonomy has become increasingly based on molecular and cellular data. Currently, there is some debate about the taxonomic validity of ''Rhodomonas'' as a genus and further research is needed to verify its taxonomic status. ''Rhodomonas'' is typically found in marine environments, although freshwater reports exist. It is commonly used as a live feed for various aquaculture species. History of Knowledge Discovery ''Rhodomonas'' was first described by G. Karsten in 1898 as a “strange, swimming organism”. The first indication of ''Rhodomonas’'' existence was Karsten's observation of its proliferation in a sample containing d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrenomonadaceae
Pyrenomonadaceae is a family of cryptomonads which includes three or four known genera. They are distinguished from other cryptomonads by their nucleomorphs being imbedded into the pyrenoid, and the presence of distinctive pigment phycoerythrin 545. Taxonomy '' Rhodomonas'' was the first genus within today's Pyrenomonadaceae identified, being described in 1898. For most of the 20th century, all other genera now recognized as ''Pyrenomonadaceae'' were placed into various other taxa (ex. ''Rhinomonas fulva'' as ''Cryptochrysis fulva'') Adolf Pascher placed Rhodomonas within his subfamily Cryptochrysideae in 1913. Butcher's highly influential 1967 phylogeny of all then-known Cryptophytes did not recognize ''Rhodomonas'', reclassifying all previously described Rhodomonas species as '' Chroomonas''. Between 1982 and 1986, a series of ultrastructure studies by Uwe J. Santore found considerable morphological inconsistencies within Butcher's ''Chroomonas'', leading him to identify ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chroomonadaceae
Chroomonadaceae is a family of cryptomonads first recognized by Clay et al in 1999 as including genera '' Chroomonas'', ''Falcomonas'', and '' Komma''. Following a molecular phylogenic study in 2002, Hemiselmis was also placed within the Chroomonadaceae. Today, the family is generally recognized as sister to the Pyrenomonadaceae. They are one of only two groups of cryptomonads (alongside ''Rhinomonas'') to lack a rhizostyle. They are also distinguished by the lack of a cleavage furrow and the presence of several phycocyanins and phycoerythrins Phycoerythrin (PE) is a red protein-pigment complex from the light-harvesting phycobiliprotein family, present in cyanobacteria, red algae and cryptophytes, accessory to the main chlorophyll pigments responsible for photosynthesis.The red pigment ... not observed in any other cryptomonad taxa. Taxonomy Laza-Martinez, 2012 References {{Taxonbar, from=Q12620720 Cryptomonads ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geminigeraceae
Geminigeraceae is a family of cryptophytes containing the five genera ''Geminigera'', ''Guillardia'', ''Hanusia'', ''Proteomonas'' and ''Teleaulax''. They are characterised by chloroplasts containing Cr-phycoerythrin 545, and an inner periplast component (IPC) comprising "a sheet or a sheet and multiple plates if diplomorphic". The nucleomorphs are never in the pyrenoid Pyrenoids are sub-cellular micro-compartments found in chloroplasts of many algae,Giordano, M., Beardall, J., & Raven, J. A. (2005). CO2 concentrating mechanisms in algae: mechanisms, environmental modulation, and evolution. Annu. Rev. Plant Bio ..., and there is never a scalariform furrow. The cells do, however, have a long, keeled rhizostyle with lamellae (wings). References Cryptomonads Eukaryote families {{Cryptomonad-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptomonad
The cryptomonads (or cryptophytes) are a group of algae, most of which have plastids. They are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened in shape, with an anterior groove or pocket. At the edge of the pocket there are typically two slightly unequal flagella. Some may exhibit mixotrophy. Characteristics Cryptomonads are distinguished by the presence of characteristic extrusomes called ejectosomes, which consist of two connected spiral ribbons held under tension. If the cells are irritated either by mechanical, chemical or light stress, they discharge, propelling the cell in a zig-zag course away from the disturbance. Large ejectosomes, visible under the light microscope, are associated with the pocket; smaller ones occur underneath the periplast, the cryptophyte-specific cell surrounding. Except for the class '' Goniomonadea'', which lacks plastids entirely, and ''Cryptomonas paramecium'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptomonads
The cryptomonads (or cryptophytes) are a group of algae, most of which have plastids. They are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened in shape, with an anterior groove or pocket. At the edge of the pocket there are typically two slightly unequal flagella. Some may exhibit mixotrophy. Characteristics Cryptomonads are distinguished by the presence of characteristic extrusomes called ejectosomes, which consist of two connected spiral ribbons held under tension. If the cells are irritated either by mechanical, chemical or light stress, they discharge, propelling the cell in a zig-zag course away from the disturbance. Large ejectosomes, visible under the light microscope, are associated with the pocket; smaller ones occur underneath the periplast, the cryptophyte-specific cell surrounding. Except for the class '' Goniomonadea'', which lacks plastids entirely, and ''Cryptomonas paramecium'' (p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
