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Phytoecdysteroids
Phytoecdysteroids are plant-derived ecdysteroids. Phytoecdysteroids are a class of chemicals that plants synthesize for defense against phytophagous (plant eating) insects. These compounds are mimics of hormones used by arthropods in the molting process known as ecdysis. When insects eat the plants with these chemicals they may prematurely molt, lose weight, or suffer other metabolic damage and die. Chemically, phytoecdysteroids are classed as triterpenoids, the group of compounds that includes triterpene saponins, phytosterols, and phytoecdysteroids. Plants, but not animals, synthesize phytoecdysteroids from mevalonic acid in the mevalonate pathway of the plant cell using acetyl-CoA as a precursor. Over 250 ecdysteroid analog (chemistry), analogs have been identified so far in plants, and it has been theorized that there are over 1,000 possible structures which might occur in nature. Many more plants have the ability to "turn on" the production of phytoecdysteroids when under str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecdysteroid
Ecdysteroids are arthropod steroid hormones that are mainly responsible for molting, development and, to a lesser extent, reproduction; examples of ecdysteroids include ecdysone, ecdysterone, turkesterone and 2-deoxyecdysone. These compounds are synthesized in arthropods from dietary cholesterol upon metabolism by the Halloween family of cytochrome P450s. Phytoecdysteroids also appear in many plants mostly as a protection agents (toxins or antifeedants) against herbivore A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthpar ... insects. Ecdysterone has been tested on mammals due to the interest in its potential hypertrophic effect. It has been found to increase hypertrophy in rats at a similar level to some anabolic androgenic steroids and SARM S 1. This is proposed to be through incre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pfaffia Paniculata
''Hebanthe erianthos'' (many synonyms, including ''Iresine erianthos'' and ''Pfaffia paniculata''), known as suma or Brazilian ginseng, is a species of plant in the family Amaranthaceae. The specific epithet is also spelt "''eriantha''", although the basionym is ''Iresine erianthos''. The root of this rambling ground vine found in South America is used traditionally as a medicine and tonic. Nicknamed "para tudo" in Brasil, which means "for everything", suma is a traditional herbal medicine. The indigenous peoples of the Amazon region have used suma root for generations for a wide variety of health purposes, including as a general tonic; as an energy, rejuvenating, and sexual tonic; a calming agent; to treat ulcers; and as a cure-all for at least 300 years. The root contains phytochemicals including saponins ( pfaffosides),"Triterpenoids from Brazilian Ginseng, ''Pfaffia paniculata''" Jing Li, Atul N. Jadhav, Ikhlas A. KhaTropical Plant Database pfaffic acid, beta-ecdysterone, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steroids
A steroid is a biologically active organic compound with four rings arranged in a specific molecular configuration. Steroids have two principal biological functions: as important components of cell membranes that alter membrane fluidity; and as signaling molecules. Hundreds of steroids are found in plants, animals and fungi. All steroids are manufactured in cells from the sterols lanosterol ( opisthokonts) or cycloartenol (plants). Lanosterol and cycloartenol are derived from the cyclization of the triterpene squalene. The steroid core structure is typically composed of seventeen carbon atoms, bonded in four " fused" rings: three six-member cyclohexane rings (rings A, B and C in the first illustration) and one five-member cyclopentane ring (the D ring). Steroids vary by the functional groups attached to this four-ring core and by the oxidation state of the rings. Sterols are forms of steroids with a hydroxy group at position three and a skeleton derived from chol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytochemicals
Phytochemicals are chemical compounds produced by plants, generally to help them resist fungi, bacteria and plant virus infections, and also consumption by insects and other animals. The name comes . Some phytochemicals have been used as poisons and others as traditional medicine. As a term, ''phytochemicals'' is generally used to describe plant compounds that are under research with unestablished effects on health, and are not scientifically defined as essential nutrients. Regulatory agencies governing food labeling in Europe and the United States have provided guidance for industry to limit or prevent health claims about phytochemicals on food product or nutrition labels. Definition Phytochemicals are chemicals of plant origin. Phytochemicals (from Greek ''phyto'', meaning "plant") are chemicals produced by plants through primary or secondary metabolism. They generally have biological activity in the plant host and play a role in plant growth or defense against competitors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Defense Against Herbivory
Plant defense against herbivory or host-plant resistance (HPR) describes a range of adaptations evolved by plants which improve their survival and reproduction by reducing the impact of herbivores. Plants can sense being touched, and they can use several strategies to defend against damage caused by herbivores. Many plants produce secondary metabolites, known as allelochemicals, that influence the behavior, growth, or survival of herbivores. These chemical defenses can act as repellents or toxins to herbivores or reduce plant digestibility. Another defensive strategy of plants is changing their attractiveness. To prevent overconsumption by large herbivores, plants alter their appearance by changing their size or quality, overall decreasing their consumption rate. Other defensive strategies used by plants include escaping or avoiding herbivores at any time and/or in any place, for example, by growing in a location where plants are not easily found or accessed by herbivores or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asparagus (genus)
''Asparagus'' is a genus of flowering plants in the family Asparagaceae, subfamily Asparagoideae. It comprises up to 300 species. Most are evergreen long-lived perennial plants growing from the understory as lianas, bushes or climbing plants. The best-known species is the edible ''Asparagus officinalis'', commonly referred to as just ''asparagus''. Some other members of the genus, such as ''Asparagus densiflorus'', are grown as ornamental plants. Ecology The genus includes a variety of living forms, occurring from rainforest to semi-desert habitats; many are climbing plants. Most are dispersed by birds. Ornamental species such as '' Asparagus plumosus'', ''Asparagus aethiopicus'', ''Asparagus setaceus'', and '' Asparagus virgatus'' are finely branched and are misleadingly known as "asparagus fern". In the Macaronesian Islands, several species (such as ''Asparagus umbellatus'' and '' Asparagus scoparius'') grow in moist laurel forest habitat, and preserve the original form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordyceps
''Cordyceps'' is a genus of ascomycete fungi (sac fungi) that includes about 600 species. Most ''Cordyceps'' species are endoparasitoids, parasitic mainly on insects and other arthropods (they are thus entomopathogenic fungi); a few are parasitic on other fungi. The generic name ''Cordyceps'' is derived from the Greek word κορδύλη ''kordýlē'', meaning "club", and the Greek word κεφαλή ''cephali'', meaning "head". The genus has a worldwide distribution and most of the approximately 600 species that have been described are from Asia (notably Nepal, China, Japan, Bhutan, Korea, Vietnam, and Thailand). ''Cordyceps'' species are particularly abundant and diverse in humid temperate and tropical jungles. Subtaxa There are two recognized subgenera: *''Cordyceps'' subgen. ''Cordyceps'' Fr. 1818 *''Cordyceps'' subgen. ''Cordylia'' Tul. & C. Tul. 1865 ''Cordyceps'' subgen. ''Epichloe'' was at one time a subgenus, but is now regarded as a separate genus, ''Epichloë' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serratula Coronata
''Serratula'' is a genus of plants in the tribe Cardueae within the family Asteraceae native to Eurasia. Plumeless saw-wort is a common name for plants in this genus. ''Serratula'' as traditionally defined contains at least two groups: one of which is basal within the subtribe Centaureinae and one of which is derived; the former group can be moved to the genus ''Klasea''. Various species contain apigenin, luteolin, quercetin, other flavonoids and ecdysteroids. ; Species ; Formerly includedFlann, C (ed) 2009+ Global Compositae Checklist Numerous species are now considered members of other genera: * '' Acilepis'' * '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaponticum Uniflorum
''Rhaponticum'' is a genus of flowering plants in the tribe Cardueae within the family Asteraceae. Description ''Rhaponticum'' species are perennial herbaceous plants with simple, rarely branched stems. The leaves are simple to pinnatifid. The inflorescence is on the apex of the stem. The fruit is an achene with a hairy pappus.''Rhaponticum''. Flora of China. Systematics Species The genus comprises the following species.Hidalgo, O., et al. (2006)[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuzea Carthamoides
''Rhaponticum'' is a genus of flowering plants in the tribe Cardueae within the family Asteraceae. Description ''Rhaponticum'' species are perennial herbaceous plants with simple, rarely branched stems. The leaves are simple to pinnatifid. The inflorescence is on the apex of the stem. The fruit is an achene with a hairy pappus.''Rhaponticum''. Flora of China. Systematics Species The genus comprises the following species.Hidalgo, O., et al. (2006)[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tinospora Cordifolia
''Tinospora cordifolia'' (common names gurjo, heart-leaved moonseed, guduchi or giloy) is a herbaceous vine of the family Menispermaceae indigenous to tropical regions of the Indian subcontinent. It has been used in Ayurveda to treat various disorders, but there is no clinical evidence for the effectiveness of such treatment. Botanical description It is a large, deciduous, extensively-spreading, climbing vine with several elongated twining branches. Leaves are simple, alternate, and exstipulate with long petioles up to long which are roundish and pulvinate, both at the base and apex with the basal one longer and twisted partially and half way around. It gets its name heart-leaved moonseed by its heart-shaped leaves and its reddish fruit. Lamina are broadly ovate or ovate cordate, long or broad, seven nerved and deeply cordate at base, membranous, pubescent above, whitish tomentose with a prominent reticulum beneath. Flowers are unisexual, small on separate plants and appear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecdysis
Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa. Since the cuticle of these animals typically forms a largely inelastic exoskeleton, it is shed during growth and a new, larger covering is formed. The remnants of the old, empty exoskeleton are called exuviae. After moulting, an arthropod is described as ''teneral'', a ''callow''; it is "fresh", pale and soft-bodied. Within one or two hours, the cuticle hardens and darkens following a tanning process analogous to the production of leather. During this short phase the animal expands, since growth is otherwise constrained by the rigidity of the exoskeleton. Growth of the limbs and other parts normally covered by the hard exoskeleton is achieved by transfer of body fluids from soft parts before the new skin hardens. A spider with a small abdomen may be undernourished but more probably has recently undergone ecdysis. Some arthropods, especially large insects with tracheal respiration, expand the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
