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Ancistrocladus Korupensis
''Ancistrocladus korupensis'' is a species of liana endemic to southwestern Cameroon and the neighbouring regions of Nigeria. The type locality is Korup National Park. The plant was identified as new to science in 1993 after pharmacologically intriguing alkaloids were found in its leaves. Description Like other members of its genus '' Ancistrocladus'', this plant starts life as a free-standing bushy plant, with rosettes of eight to ten long leaves at the tip of each branch. When the sapling is three or four metres tall, one shoot develops into an aerial, hooked stem with alternate long leaves, which quests upward in search of a host. When this stem is established in a tree, the rosettes at the base die off. The flowers have yellowish-green sepals, pinkish or yellowish petals, ten stamens in two whorls and three styles. The fruits have five wings. They do not disperse very far, and the function of the wings seems to be to position the fruits correctly for germination rather tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duncan W
Duncan may refer to: People * Duncan (given name), various people * Duncan (surname), various people * Clan Duncan * Justice Duncan (other) Places * Duncan Creek (other) * Duncan River (other) * Duncan Lake (other), including Lake Duncan Australia *Duncan, South Australia, a locality in the Kangaroo Island Council *Hundred of Duncan, a cadastral unit on Kangaroo Island in South Australia Bahamas *Duncan Town, Ragged Island, Bahamas ** Duncan Town Airport Canada * Duncan, British Columbia, on Vancouver Island * Duncan Dam, British Columbia * Duncan City, Central Kootenay, British Columbia; see List of ghost towns in British Columbia United States * Duncan Township (other) * Duncan, Arizona * Duncan, Indiana * Duncan, Iowa * Duncan, Kentucky (other) * Duncan City, Cheboygan, Michigan * Duncan, Mississippi * Duncan, Missouri * Duncan, Nebraska * Duncan, North Carolina * Duncan, Oklahoma * Duncan, South Carolina * F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oubanguia
''Oubanguia'' is a genus of flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...s belonging to the family Lecythidaceae. Its native range is Africa. Species Species: *'' Oubanguia africana'' *'' Oubanguia alata'' *'' Oubanguia laurifolia'' References {{Taxonbar, from=Q9053611 Lecythidaceae Ericales genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Cameroon
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms ''gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de Phy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancistrocladaceae
''Ancistrocladus'' is a genus of woody lianas in the monotypic family ''Ancistrocladaceae''. The branches climb by twining other stems or by scrambling with hooked tips. They are found in the tropics of the Old World. Classification The APG II system, of 2003 (unchanged from the APG system, of 1998), also recognizes this family and assigns it to the order Caryophyllales in the clade core eudicots. Recent molecular and biochemical evidence (see thAP-Website suggests the carnivorous taxa in the order Caryophyllales (the families Droseraceae and Nepenthaceae and the species ''Drosophyllum lusitanicum'' and '' Triphyophyllum peltatum'') all belong to the same clade. This family Ancistrocladaceae would belong to this same clade, although the plants in the family are not carnivorous. A close relationship between this family and the family Dioncophyllaceae (containing the carnivorous species ''T. peltatum'') is supported by similar pollen and petiole structure. The Cronquist system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Cancer Institute
The National Cancer Institute (NCI) coordinates the United States National Cancer Program and is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services. The NCI conducts and supports research, training, health information dissemination, and other activities related to the causes, prevention, diagnosis, and treatment of cancer; the supportive care of cancer patients and their families; and cancer survivorship. NCI is the oldest and has the largest budget and research program of the 27 institutes and centers of the NIH ($6.9 billion in 2020). It fulfills the majority of its mission via an extramural program that provides grants for cancer research. Additionally, the National Cancer Institute has intramural research programs in Bethesda, Maryland, and at the Frederick National Laboratory for Cancer Research at Fort Detrick in Frederick, Maryland. The NCI receives more than in funding each ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subtypes Of HIV
The subtypes of HIV include two major types, HIV type 1 (HIV-1) and HIV type 2 (HIV-2). HIV-1 is related to viruses found in chimpanzees and gorillas living in western Africa, while HIV-2 viruses are related to viruses found in the sooty mangabey, a vulnerable West African primate. HIV-1 viruses can be further divided into groups M, N, O and P. The HIV-1 group M viruses predominate and are responsible for the AIDS pandemic. Group M can be further subdivided into subtypes based on genetic sequence data. Some of the subtypes are known to be more virulent or are resistant to different medications. Likewise, HIV-2 viruses are thought to be less virulent and transmissible than HIV-1 M group viruses, although HIV-2 is also known to cause AIDS. One of the obstacles to treatment of the human immunodeficiency virus (HIV) is its high genetic variability. Major types HIV-1 HIV-1 is the most common and pathogenic strain of the virus. Over 2 million such infections occur annually. Scientists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michellamine
Michellamines are a group of atropisomeric alkaloid which have been found to be HIV viral replication inhibitors '' in vitro''. It was discovered in the leaves of ''Ancistrocladus korupensis''. There are three michellamines represented as A, B, and C; however, michellamine B is the most active against the NID-DZ strain of HIV-2. Occurrence Michellamine A and B occur naturally in ''Ancistrocladus korupensis'' leaves. Other chemical substances including alkaloids, tannins, and saponins are found in the roots, leaves, stems, flowers, or bark. Synthesis There are two methods explored to synthesize michellamines A and B. The first one, originally synthesized in 1994, is a retrosynthesis that leads to a biomimetic pathway that uses the construction of naphthalene/ isoquinoline bonds before the naphthalene/naphthalene axis. The second method, originally synthesized only a few montes after the first method, is a complementary pathway that would use the naphthalene/naphthalene axis aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cola Rostrata
''Cola rostrata'' is a species of flowering plant in the family Malvaceae, commonly known as monkey cola or cockroach cola. It is a tree found in the tropical rainforests of Cameroon, Nigeria and Gabon. Description ''Cola rostrata'' is a tree growing to a height of about with a broad crown. The leaves are palmately compound, with five to seven leaflets with elongated tips. The insides of the flowers are creamy yellow. Distribution and habitat ''Cola rostrata'' is native to southeastern Nigeria, southern Cameroon and Gabon. It is a tropical lowland rainforest tree. Uses ''Cola rostrata'' has sweet edible fruits, enjoyed by humans and also appreciated by monkeys, baboons and other primates. The edible part is the aril, the white fleshy mesocarp; the large, rough, brown, flattened seeds are not edible, unlike the seeds of the closely related cola nut (''Cola nitida''). The plant is not known to have traditional uses as a herbal remedy, but many members of the genus ''Cola'' do ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strephonema Pseudocola
''Strephonema pseudocola'' is a species of flowering plant in the family Combretaceae. It is a tree found in the forests of tropical West Africa. It was first described from the Ivory Coast. Description ''Strephonema pseudocola'' is a large tree growing to a height of about . The leaves are alternate, simple and entire, the apex drawn out into a point. The white flowers are much larger than those of other members of the genus. They are bisexual, with parts in fives, and have a pedicel. The receptacle is cup-shaped, with the ovary visible inside at the base; this means that as the fruit develops, the remains of the calyx, petals and stamens are at the base of the fruit, whereas, in other genera of the family Combretaceae, they are at the top. The succulent fruit is some wide and long, rough, with a sharp apex and a warty appearance; it resembles a gall, and contains a single, large seed with two cotyledons; the fruit is similar in appearance to a kola nut. Distribution ''Stre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microberlinia Bisulcata
''Microberlinia bisulcata'' is a species of plant in the family Fabaceae, a lowland rainforest tree that is found only in Cameroon. It is threatened by habitat destruction and exploitation. Common names include African zebrawood, tigerwood, zebrano and zingana. Description ''Microberlinia bisulcata'' is a tall forest tree, growing to a height of up to with massive buttress roots, and towering above the canopy. The lower half of the cylindrical trunk is devoid of branches. The leaves are small and the flowers are pea-like. The roots have an ectomycorrhizal association with fungi in the soil. Distribution and habitat ''Microberlinia bisulcata'' is endemic to southwestern Cameroon. It is present in Korup National Park, Loum Forest Reserve and on the northern and western foothills of Mount Cameroon. Records from elsewhere are unreliable. It occurs in lowland rainforest, typically in flat sandy areas. Uses This tree is harvested for its valuable timber. The sapwood is thick and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Host (biology)
In biology and medicine, a host is a larger organism that harbours a smaller organism; whether a parasite, parasitic, a mutualism (biology), mutualistic, or a commensalism, commensalist ''guest'' (symbiont). The guest is typically provided with nourishment and shelter. Examples include animals playing host to parasitic worms (e.g. nematodes), cell (biology), cells harbouring pathogenic (disease-causing) viruses, a Fabaceae, bean plant hosting mutualistic (helpful) Rhizobia, nitrogen-fixing bacteria. More specifically in botany, a host plant supplies nutrient, food resources to micropredators, which have an evolutionarily stable strategy, evolutionarily stable relationship with their hosts similar to ectoparasitism. The host range is the collection of hosts that an organism can use as a partner. Symbiosis Symbiosis spans a wide variety of possible relationships between organisms, differing in their permanence and their effects on the two parties. If one of the partners in an ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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