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Naganishia
''Naganishia'' is a genus of fungi in the family Filobasidiaceae. Species are currently only known from their yeast states, most of which were formerly referred to the genus ''Cryptococcus ''Cryptococcus'' is a genus of fungi in the family Cryptococcaceae that includes both yeasts and filamentous species. The filamentous, sexual forms or teleomorphs were formerly classified in the genus ''Filobasidiella'', while ''Cryptococcus'' ...''. Some 15 species have been described worldwide. '' Naganishia albida'' is an occasional human pathogen. References {{Taxonbar, from=Q27786276 Tremellomycetes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naganishia Antarctica
''Naganishia antarctica'' is a yeast species that has been isolated from soil in Antarctica. This species grows best between and , and some strains have been observed to grow above . This temperature range is one of the only things that can distinguish it from ''N. albida'' on the DNA level, however, it can be phenotypically differentiated through its ability to utilize different minerals and its overall appearance. When plated the colonies have a slightly mucosoid appearance, with a white to cream coloration. ''Naganishia antarctica'' is able to assimilate nitrogen and glucoronate, and some strains can turn a dirty yellow when doing so. When being cultured in liquid media, constant agitation is required. On a microscopic level this yeast is ovoid. ''Naganishia antarctica'' has not been seen to sexually reproduce, but when it reproduces asexually it does so through budding. Mature cells that have not recently budded typically are 4.0 μm by 7.5 μm, and they do not appear to pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naganishia Adeliensis
''Naganishia adeliensis'' (synonym ''Cryptococcus adeliensis'') is a species of fungus in the family ''Filobasidiaceae''. It is currently only known from its yeast state, isolated from decaying algae in Antarctica. When plated on agar ''Naganishia adeliensis'' produces colonies that are cream, with a smooth, glossy appearance. The colonies frequently appear to have a soft texture. The optimal growth range for this species is at 25 degrees Celsius. ''Naganishia adeliensis'' is incapable of fermentation, as is typical of ''Naganishia'' species. This species is able to use sucrose, maltose, cellbiose, trehalose, raffinose, citrate, inositol ethanol, soluble starch, melezitose, xylitol, saccharate, salicin as well as many other compounds as sole carbon sources. ''Naganishia adeliensis'' is able to use nitrate, nitrite and cadaverine Cadaverine is an organic compound with the formula (CH2)5(NH2)2. Classified as diamine, it is a colorless liquid with an unpleasant odor. It is p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naganishia Albidosimilis
''Naganishia albidosimilis'' (synonym ''Cryptococcus albidosimilis'') is a species of fungus in the family Filobasidiaceae. It is currently only known from its yeast state, isolated from soil in Antarctica. When plated on agar ''Naganishia albidosimilis'' produces colonies that are shining white. The colonies appear to be mucosoid when plated on agar. When grown in liquid media, the yeast fails to grow well unless the media is constantly agitated. This species is considered mesophilic, with optimal growth temperature at 25 °C. The yeast cells are ovoid and produce a capsule. ''Naganishia albidosimilis'' reproduces through budding and it does not appear as though this species reproduces through any sexual means. When mature, the cell size is approximately 4.9μm to 6.6μm. ''Naganishia albidosimilis'' can use L-arabinose, cellobiose, citrate at pH 6.0, ethanol, D-glucitol, gluconate at pH 5.8, glucuronate at pH 5.5, myo-inositol, lactose, maltose, mannitol, melezitose, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naganishia Albida
''Naganishia albida'' (synonym ''Cryptococcus albidus'') is a species of fungus in the family Filobasidiaceae. It is currently only known from its yeast state. The species was originally isolated from the air in Japan, and has subsequently been isolated from dry moss in Portugal, grasshoppers in Portugal, and tubercular lungs. Description Cultured colonies are cream to pale pink, the majority smooth with a mucoid appearance. Some are rough and wrinkled, but this is a rare occurrence. ''Naganishia albida'' is very similar to ''Cryptococcus neoformans'', but can be differentiated because it is phenol oxidase-negative, and, when grown on Niger or birdseed agar, ''C. neoformans'' produces melanin, causing the cells to become brown, while ''N. albida'' cells stay cream. Microscopically, ''N. albida'' yeasts are ovoid and when viewed with India ink, a capsule is apparent. This species also reproduces through budding. The formation of pseudohyphae has not been seen. ''N. albida'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naganishia Bhutanensis
''Naganishia bhutanensis'' is a species of fungus in the family Filobasidiaceae. It was isolated in its yeast state from soil in Bhutan. The cell is encapsulated with an extended ovoid shape. When the cell buds, it creates birth scars, and the neck of the new yeast fits inside of the bud scar neck. The new cell typically only buds from the birth scar present from where it budded off the parent cell. In over half of the dividing cells in ''N. bhutanensis'' cultures the cell walls were holoblastic, meaning that the new cell wall was continuous with the old cell wall on the parent cell; the remaining portion of dividing cells in ''N. bhutanensis'' cultures divide enteroblastically, meaning that only the inner layer of the new cell wall is continuous with the inner layer of the parental cell wall. After the cells bud off they produce a collar on the parent cell. One thing of note with ''N. bhutanensis'' is that mitosis is not intranuclear. This species does not produce urease Ureases ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naganishia Vishniacii
''Naganishia vishniacii'' is an extremophile fungus originally isolated as a yeast from soil samples in the dry valleys of Antarctica. The species grows at 4 degrees Celsius and below but not at 26 degrees Celsius and above. Visually it is characterized as a cream mass in culture. It is nonfermentative and assimilates glucose, maltose, melezitose, trehalose, and xylose. Molecular research, based on cladistic analysis of DNA sequences, shows that the species does not belong in the Cryptococcaceae The Cryptococcaceae are a family of fungi in the order Tremellales. The family currently contains two genera. Some species produce filamentous, sexual states with distinctive basidia and are parasites of other fungi. Most, however, are only know .... References External links Tremellomycetes Fungi of Antarctica {{Basidiomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filobasidiaceae
The Filobasidiaceae are a family of fungi in the order Filobasidiales. Most species are yeasts, but some form gelatinous fruit bodies that are parasitic on other fungi, including lichens A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.genera. References {{Taxonbar, from=Q10495215 Tremellomycetes Filobasidiaceae ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yeast
Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitute 1% of all described fungal species. Yeasts are unicellular organisms that evolved from multicellular ancestors, with some species having the ability to develop multicellular characteristics by forming strings of connected budding cells known as pseudohyphae or false hyphae. Yeast sizes vary greatly, depending on species and environment, typically measuring 3–4 µm in diameter, although some yeasts can grow to 40 µm in size. Most yeasts reproduce asexually by mitosis, and many do so by the asymmetric division process known as budding. With their single-celled growth habit, yeasts can be contrasted with molds, which grow hyphae. Fungal species that can take both forms (depending on temperature or other conditions) are ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
