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Boreostereum
''Boreostereum'' is a genus of corticioid fungi. The genus was circumscribed in 1968 by Erast Parmasto to contain the type species, which was formerly known as ''Stereum radiatum''. ''Boreostereum'' has four species that are widely distributed in northern temperate areas. Species in the genus have a dimitic hyphal system, and the hyphae have with brown encrustations that turn greenish when potassium hydroxide is applied. '' Boreosterum vibrans'' produces vibralactones, chemical metabolites that inhibit various enzymes. Recent phylogenetic research indicates that ''Boreostereum'' is a sister group In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ... to the rest of the Gloeophyllales. References Gloeophyllales Agaricomycetes genera {{Agaricomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boreostereum Vibrans
''Boreostereum'' is a genus of corticioid fungi. The genus was circumscribed in 1968 by Erast Parmasto to contain the type species, which was formerly known as ''Stereum radiatum''. ''Boreostereum'' has four species that are widely distributed in northern temperate areas. Species in the genus have a dimitic hyphal system, and the hyphae have with brown encrustations that turn greenish when potassium hydroxide is applied. '' Boreosterum vibrans'' produces vibralactones, chemical metabolites that inhibit various enzymes. Recent phylogenetic research indicates that ''Boreostereum'' is a sister group to the rest of the Gloeophyllales The Gloeophyllales are a phylogenetically defined order of wood-decay fungi that is characterized by the ability to produce a brown rot of wood. * * * * It includes a single, identically defined family, the Gloeophyllaceae, in which are inclu .... References Gloeophyllales Agaricomycetes genera {{Agaricomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vibralactone
Vibralactones are a group of related terpenoid chemical compounds, the first of which were isolated from the Basidiomycete ''Boreostereum vibrans ''Boreostereum'' is a genus of corticioid fungi. The genus was circumscribed in 1968 by Erast Parmasto to contain the type species, which was formerly known as ''Stereum radiatum''. ''Boreostereum'' has four species that are widely distributed ...'' in 2006. Additional vibralactones have also been isolated from the fungus '' Stereum hirsutum''. Vibralactone A has attracted research interest because it is an inhibitor of pancreatic lipase (IC50 0.4 μg/mL) with '' in vitro'' activity comparable to that of the obesity drug orlistat. Several laboratory syntheses of vibralactone A have been developed. Chemical structures References {{reflist Terpenes and terpenoids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloeophyllales
The Gloeophyllales are a phylogenetically defined order of wood-decay fungi that is characterized by the ability to produce a brown rot of wood. * * * * It includes a single, identically defined family, the Gloeophyllaceae, in which are included the genera ''Gloeophyllum'', ''Neolentinus'', ''Heliocybe'', and ''Veluticeps ''Veluticeps'' is a small genus of wood-rot fungi characterized by the production of resupinate to bracket shaped, perennial, tough, brown fruitbodies, that blacken when KOH solution is applied, and with a smooth to warted or cracked fertile un ...''. References Basidiomycota orders Monotypic fungus taxa {{Agaricomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloeophyllaceae
The Gloeophyllales are a phylogenetically defined order of wood-decay fungi that is characterized by the ability to produce a brown rot of wood. * * * * It includes a single, identically defined family, the Gloeophyllaceae, in which are included the genera ''Gloeophyllum'', ''Neolentinus'', ''Heliocybe'', and ''Veluticeps ''Veluticeps'' is a small genus of wood-rot fungi characterized by the production of resupinate to bracket shaped, perennial, tough, brown fruitbodies, that blacken when KOH solution is applied, and with a smooth to warted or cracked fertile un ...''. References Basidiomycota orders Monotypic fungus taxa {{Agaricomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen(s). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name that has that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have such types. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium Hydroxide
Potassium hydroxide is an inorganic compound with the formula K OH, and is commonly called caustic potash. Along with sodium hydroxide (NaOH), KOH is a prototypical strong base. It has many industrial and niche applications, most of which exploit its caustic nature and its reactivity toward acids. An estimated 700,000 to 800,000 tonnes were produced in 2005. KOH is noteworthy as the precursor to most soft and liquid soaps, as well as numerous potassium-containing chemicals. It is a white solid that is dangerously corrosive. Properties and structure KOH exhibits high thermal stability. Because of this high stability and relatively low melting point, it is often melt-cast as pellets or rods, forms that have low surface area and convenient handling properties. These pellets become tacky in air because KOH is hygroscopic. Most commercial samples are ca. 90% pure, the remainder being water and carbonates. Its dissolution in water is strongly exothermic. Concentrated aqueous so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperate
In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout the year and more distinct seasonal changes compared to tropical climates, where such variations are often small and usually only have precipitation changes. In temperate climates, not only do latitudinal positions influence temperature changes, but sea currents, prevailing wind direction, continentality (how large a landmass is) and altitude also shape temperate climates. The Köppen climate classification defines a climate as "temperate" C, when the mean temperature is above but below in the coldest month to account for the persistency of frost. However, other climate classifications set the minimum at . Zones and climates The north temperate zone extends from the Tropic of Cancer (approximately 23.5° north latitude) to the Arctic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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