|
Conosa
Conosa is a grouping of Amoebozoa. It is subdivided into three groups – Archamoebae, Variosea ( paraphyletic) and Mycetozoa (polyphyletic). In some classifications, the mycetozoan Myxogastria and Dictyostelia are united in Macromycetozoa. Conosa includes the species ''Dictyostelium discoideum'' and ''Entamoeba histolytica'', among others. File:Entamoeba histolytica.jpg, ''Entamoeba histolytica'' trophozoite Pelomyxa palustris.jpg, ''Pelomyxa palustris'' File:Badhamia_utricularis_mature.jpg, '' Badhamia utricularis'' (Myxogastria Myxogastria/Myxogastrea (myxogastrids, ICZN) or Myxomycetes ( ICN), is a class of slime molds that contains 5 orders, 14 families, 62 genera, and 888 species. They are colloquially known as the ''plasmodial'' or ''acellular ...: Physarales) References Taxa named by Thomas Cavalier-Smith Amorphea subphyla {{Amoebozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amoebozoa
Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae. In traditional and currently no longer supported classification schemes, Amoebozoa is ranked as a phylum within either the kingdom Protista or the kingdom Protozoa. In the classification favored by the International Society of Protistologists, it is retained as an unranked " supergroup" within Eukaryota. Molecular genetic analysis supports Amoebozoa as a monophyletic clade. Modern studies of eukaryotic phylogenetic trees identify it as the sister group to Opisthokonta, another major clade which contains both fungi and animals as well as several other clades comprising some 300 species of unicellular eukaryotes. Amoebozoa and Opisthokonta are sometimes grouped together in a high-level taxon, variously named Unikonta, Amorphea or Opimoda. Amoebozoa includes many of the best-known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variosea
Conosa is a grouping of Amoebozoa. It is subdivided into three groups – Archamoebae, Variosea (paraphyletic) and Mycetozoa (polyphyletic). In some classifications, the mycetozoan Myxogastria and Dictyostelia are united in Macromycetozoa. Conosa includes the species ''Dictyostelium discoideum'' and ''Entamoeba histolytica'', among others. File:Entamoeba histolytica.jpg, ''Entamoeba histolytica'' trophozoite Pelomyxa palustris.jpg, ''Pelomyxa palustris'' File:Badhamia_utricularis_mature.jpg, ''Badhamia utricularis'' (Myxogastria: Physarales Physarales is an order of Amoebozoa in the class Myxomycetes. It contains three families, the Didymiaceae, the Lamprodermataceae, and the Physaraceae. Physarales was circumscribed by Thomas Huston Macbride Thomas Huston Macbride (July 31, 1 ...) References Taxa named by Thomas Cavalier-Smith Amorphea subphyla {{Amoebozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conosa
Conosa is a grouping of Amoebozoa. It is subdivided into three groups – Archamoebae, Variosea ( paraphyletic) and Mycetozoa (polyphyletic). In some classifications, the mycetozoan Myxogastria and Dictyostelia are united in Macromycetozoa. Conosa includes the species ''Dictyostelium discoideum'' and ''Entamoeba histolytica'', among others. File:Entamoeba histolytica.jpg, ''Entamoeba histolytica'' trophozoite Pelomyxa palustris.jpg, ''Pelomyxa palustris'' File:Badhamia_utricularis_mature.jpg, '' Badhamia utricularis'' (Myxogastria Myxogastria/Myxogastrea (myxogastrids, ICZN) or Myxomycetes ( ICN), is a class of slime molds that contains 5 orders, 14 families, 62 genera, and 888 species. They are colloquially known as the ''plasmodial'' or ''acellular ...: Physarales) References Taxa named by Thomas Cavalier-Smith Amorphea subphyla {{Amoebozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archamoebae
The Archamoebae are a group of protists originally thought to have evolved before the acquisition of mitochondria by eukaryotes. They include genera that are internal parasites or commensals of animals (''Entamoeba'' and ''Endolimax''). A few species are human pathogens, causing diseases such as amoebic dysentery. The other genera of archamoebae live in freshwater habitats and are unusual among amoebae in possessing flagella. Most have a single nucleus and flagellum, but the giant amoeba '' Pelomyxa'' has many of each. Description Archamoebae are a diverse group of amoebae. Many have flagella for motility, while others do not. They grow in the absence of oxygen, though some can tolerate small amounts. Most described species of Archamoebae either lack mitochondria or are described to have reduced mitosomes. Habitat They thrive and live in soil, freshwater, and marine habitats. History The group Archamoebae was proposed by Thomas Cavalier-Smith in 1998 as part of the Archezoa, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelomyxa Palustris
''Pelomyxa'' is a genus of giant flagellar amoebae, usually 500-800 μm but occasionally up to 5 mm in length, found in anaerobic or microaerobic bottom sediments of stagnant freshwater ponds or slow-moving streams.Chistyakova, L. V., and A. O. Frolov. "Light and electron microscopic study of Pelomyxa stagnalis sp. n.(Archamoebae, pelobiontida)." Cell and Tissue Biology 5.1 (2011): 90-97. The genus was created by R. Greeff, in 1874, with ''Pelomyxa palustris'' as its type species. In the decades following the erection of ''Pelomyxa'', researchers assigned numerous new species to it. However, in the last quarter of the 20th century, investigators reduced the genus to a single species, ''Pelomyxa palustris'', which was understood to be a highly changeable organism with a complex life cycle, whose various phases had been mistaken for separate species. All described species were relegated to the status of synonyms, or moved to the unrelated genus ''Chaos''. Since 2004, four n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entamoeba Histolytica
''Entamoeba histolytica'' is an anaerobic parasitic amoebozoan, part of the genus ''Entamoeba''. Predominantly infecting humans and other primates causing amoebiasis, ''E. histolytica'' is estimated to infect about 35-50 million people worldwide. ''E. histolytica'' infection is estimated to kill more than 55,000 people each year. Previously, it was thought that 10% of the world population was infected, but these figures predate the recognition that at least 90% of these infections were due to a second species, '' E. dispar''. Mammals such as dogs and cats can become infected transiently, but are not thought to contribute significantly to transmission. The word '' histolysis'' literally means disintegration and dissolution of organic tissues. Transmission The active ( trophozoite) stage exists only in the host and in fresh loose feces; cysts survive outside the host in water, in soils, and on foods, especially under moist conditions on the latter. The infection can occur whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycetozoa
Mycetozoa is a polyphyletic grouping of slime molds. It was originally thought to be a monophyletic clade, but recently it was discovered that protostelia are a polyphyletic group within Conosa. Classification It can be divided into dictyostelid, myxogastrid, and protostelid groups. The mycetozoan groups all fit into the unikont supergroup Amoebozoa, whereas most other slime molds fit into various bikont groups ( fonticulids are opisthokonts). Utility in research The dictyostelids are used as examples of cell communication and differentiation, and may provide insights into how multicellular organisms develop. '' Physarum polycephalum'' are useful for studying cytoplasmic streaming. They have also been used to study the biochemical events that surround mitosis, since all of the nuclei in a medium-sized plasmodium divide in synchrony. It has been observed that they can find their way through mazes by spreading out and choosing the shortest path, an interesting example of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictyostelium Discoideum
''Dictyostelium discoideum'' is a species of soil-dwelling amoeba belonging to the phylum Amoebozoa, infraphylum Mycetozoa. Commonly referred to as slime mold, ''D. discoideum'' is a eukaryote that transitions from a collection of unicellular amoebae into a multicellular slug and then into a fruiting body within its lifetime. Its unique asexual lifecycle consists of four stages: vegetative, aggregation, migration, and culmination. The lifecycle of ''D. discoideum'' is relatively short, which allows for timely viewing of all stages. The cells involved in the lifecycle undergo movement, chemical signaling, and development, which are applicable to human cancer research. The simplicity of its lifecycle makes ''D. discoideum'' a valuable model organism to study genetic, cellular, and biochemical processes in other organisms. Natural habitat and diet In the wild, ''D. discoideum'' can be found in soil and moist leaf litter. Its primary diet consists of bacteria, such as ''Escherichia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physarales
Physarales is an order of Amoebozoa in the class Myxomycetes. It contains three families, the Didymiaceae Didymiaceae is a family of plasmodial slime molds in the order Physarales. Genera The family contains the following four genera: * '' Diderma'' * '' Didymium'' * '' Lepidoderma'' * ''Mucilago ''Mucilago crustacea'' is a species of slime mou ..., the Lamprodermataceae, and the Physaraceae. Physarales was circumscribed by Thomas Huston Macbride and published in 1922. References Myxogastria Amoebozoa orders {{Amoebozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Badhamia
''Badhamia'' is a genus of slime molds in the family Physaraceae. It was circumscribed by English naturalist Miles Joseph Berkeley Miles Joseph Berkeley (1 April 1803 – 30 July 1889) was an English cryptogamist and clergyman, and one of the founders of the science of plant pathology. Life Berkeley was born at Biggin Hall, Benefield, Northamptonshire, and educated at R ... in 1853. The widespread genus contains about 30 species. Species *'' Badhamia affinis'' *'' Badhamia apiculospora'' *'' Badhamia bibasalis'' *'' Badhamia bispora'' *'' Badhamia calcaripes'' *'' Badhamia capsulifera'' *'' Badhamia cinerascens'' *'' Badhamia crassipella'' *'' Badhamia delicatula'' *'' Badhamia dubia'' *'' Badhamia foliicola'' *'' Badhamia formosana'' *'' Badhamia gigantospora'' *'' Badhamia goniospora'' *'' Badhamia grandispora'' *'' Badhamia iowensis'' *'' Badhamia lilacina'' *'' Badhamia macrocarpa'' *'' Badhamia macrospora'' *'' Badhamia melanospora'' *'' Badhamia nitens'' *'' Badha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
