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Tibouchina Pulchra
''Pleroma raddianum'', synonyms including ''Pleroma pulchrum'' (Cham.) Triana and ''Tibouchina pulchra'', is a plant species in the family Melastomataceae. It is a pioneer tree species, growing after land degradation, in the Atlantic Rainforest of Sao Paulo State in Brazil, a forest which only 12 percent of original area remains. 2,6-Dimethoxybenzoquinone 2,6-Dimethoxybenzoquinone (2,6-DMBQ) is a chemical compound, classified as a benzoquinone, that has been found in ''Rauvolfia vomitoria'' and in ''Tibouchina pulchra''. Toxicity At physiological concentrations 2,6-dimethoxybenzoquinone is an anti ... is a toxic chemical compound found in ''P. raddianum''. File:Tibouchina pulchra - Jardim Botânico de São Paulo - IMG 0269.jpg, Specimen in the Museu Botânico Dr. João Barbosa Rodrigues, Jardim Botânico de São Paulo, São Paulo City, Brazil File:Tibouchina pulchra - Jardim Botânico de São Paulo - IMG 0324.jpg, References External links raddianum { ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, '' Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melastomataceae
Melastomataceae is a family of dicotyledonous flowering plants found mostly in the tropics (two-thirds of the genera are from the New World tropics) comprising c. 175 genera and c. 5115 known species. Melastomes are annual or perennial herbs, shrubs, or small trees. Description The leaves of melastomes are somewhat distinctive, being opposite, decussate, and usually with 3-7 longitudinal veins arising either from the base of the blade, plinerved (inner veins diverging above base of blade), or pinnately nerved with three or more pairs of primary veins diverging from the mid-vein at successive points above the base. Flowers are perfect, and borne either singly or in terminal or axillary, paniculate cymes. Ecology A number of melastomes are regarded as invasive species once naturalized in tropical and subtropical environments outside their normal range. Examples are Koster's curse (''Clidemia hirta''), ''Pleroma semidecandrum'' and ''Miconia calvescens'', but many other speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pioneer Species
Pioneer species are hardy species that are the first to colonize barren environments or previously biodiverse steady-state ecosystems that have been disrupted, such as by wildfire. Pioneer flora Some lichens grow on rocks without soil, so may be among the first of life forms, and break down the rocks into soil for plants.LICHEN BIOLOGY AND THE ENVIRONMENT, LICHENS OF NORTH AMERICA, Sylvia and Stephen Sharnoff/ref> Since some uninhabited land may have thin, poor quality soils with few nutrients, pioneer species are often hardy plants with adaptations such as long roots, root nodes containing Diazotroph, nitrogen-fixing bacteria, and leaves that employ transpiration. Note that they are often photosynthetic plants, as no other source of energy (such as other species) except light energy is often available in the early stages of succession, thus making it less likely for a pioneer species to be non-photosynthetic. The plants that are often pioneer species also tend to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Degradation
Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land. It is viewed as any change or disturbance to the land perceived to be deleterious or undesirable. Natural hazards are excluded as a cause; however human activities can indirectly affect phenomena such as floods and bush fires. This is considered to be an important topic of the 21st century due to the implications land degradation has upon agricultural productivity, the environment, and its effects on food security. It is estimated that up to 4% of the world's agricultural land is seriously degraded. According to the Special Report on Climate Change and Land of the Intergovernmental Panel on Climate Change: "About a quarter of the Earth's ice-free land area is subject to human-induced degradation (medium confidence). Soil erosion from agricultural fields is estimated to be currently 10 to 20 times (no-tillage) to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Rainforest
The Atlantic Forest ( pt, Mata Atlântica) is a South American forest that extends along the Atlantic coast of Brazil from Rio Grande do Norte state in the northeast to Rio Grande do Sul state in the south and inland as far as Paraguay and the Misiones Province of Argentina, where the region is known as Selva Misionera. The Atlantic Forest has ecoregions within the following biome categories: seasonal moist and dry broad-leaf tropical forests, tropical and subtropical grasslands, savannas, and shrublands, and mangrove forests. The Atlantic Forest is characterized by a high biodiversity and endemism. It was the first environment that the Portuguese colonists encountered over 500 years ago, when it was thought to have had an area of , and stretching an unknown distance inland, making it, back then, the second largest rainforest on the planet, only behind the Amazon rainforest. Over 85% of the original area has been deforested, threatening many plant and animal species with e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sao Paulo State
SAO or Sao may refer to: Places * Sao civilisation, in Middle Africa from 6th century BC to 16th century AD * Sao, a town in Boussé Department, Burkina Faso * Saco Transportation Center (station code SAO), a train station in Saco, Maine, U.S. * SAO, the ICAO airline designator for Sahel Aviation Service, Mali * SAO, the IATA airport code for airports in the São Paulo metropolitan area, Brazil * Serb Autonomous Regions during the breakup of Yugoslavia * São Paulo, the largest city in Brazil Science * Smithsonian Astrophysical Observatory of the Smithsonian Institution in Cambridge, Massachusetts, U.S. ** Smithsonian Astrophysical Observatory Star Catalog, which assigns SAO catalogue entries * Special Astrophysical Observatory of the Russian Academy of Science (SAO RAS) Entertainment * ''Sword Art Online'', a Japanese light novel series ** ''Sword Art Online'' (2012 TV series), an anime adaptation of the light novels * Sao Sao Sao, a Thai pop music trio Other uses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,6-Dimethoxybenzoquinone
2,6-Dimethoxybenzoquinone (2,6-DMBQ) is a chemical compound, classified as a benzoquinone, that has been found in ''Rauvolfia vomitoria'' and in ''Tibouchina pulchra''. Toxicity At physiological concentrations 2,6-dimethoxybenzoquinone is an antibacterial substance. At higher concentrations there is evidence that it is mutagenic,Brambilla G; Robbiano L; Cajelli E; Martelli A; Turmolini F; Mazzei M Cytotoxic, DNA-damaging and mutagenic properties of 2,6-dimethoxy-1,4-benzoquinone, formed by dimethophrine-nitrite interaction. The Journal of Pharmacology and Experimental Therapeutics (1988), 244(3), 1011-5 cytotoxic, genotoxic, and hepatotoxic Hepatotoxicity (from ''hepatic toxicity'') implies chemical-driven liver damage. Drug-induced liver injury is a cause of acute and chronic liver disease caused specifically by medications and the most common reason for a drug to be withdrawn fro .... Some reports have challenged its mutagenicity and others exclude such a possibility.Int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_male_Three_Brothers_River.JPG "Click for more on -> Atlantic Rainforest")