Bidens: A plant genus of the family ASTERACEAE. Members contain bidensyneosides (polyacetylene glucosides).Polyacetylenes: Hydrocarbons with more than one triple bond; or an oxidized form of POLYENES. They can react with SULFUR to form THIOPHENES.Weissella: A genus of gram-positive, asporogenous, lactic acid bacteria, in the family LEUCONOSTOCACEAE.Chenopodium album: A plant species in the CHENOPODIUM genus known for edible greens.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Agrimonia: A plant genus of the family ROSACEAE that has been used in folk treatment of diabetes. Members contain agrimoniin (TANNINS).Proteaceae: A plant family of the order Proteales, subclass Rosidae class Magnoliopsida. Cluster roots, bottlebrush-like clusters of rootlets which form in response to poor soil, are common in this family.Flowers: The reproductive organs of plants.Soil: The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.Vegetables: A food group comprised of EDIBLE PLANTS or their parts.Flavonols: A group of 3-hydroxy-4-keto-FLAVONOIDS.Diynes: Compounds with two triple bonds. Some of them are CYTOTOXINS.Phytosterols: A class of organic compounds known as STEROLS or STEROIDS derived from plants.Small Business: For-profit enterprise with relatively few to moderate number of employees and low to moderate volume of sales.Verbena: A plant genus of the family VERBENACEAE. Members contain verbenachalcone (dimeric dihydrochalcone), iridoids, and phenylethanoids.MichiganEntrepreneurship: The organization, management, and assumption of risks of a business or enterprise, usually implying an element of change or challenge and a new opportunity.Copepoda: A huge subclass of mostly marine CRUSTACEA, containing over 14,000 species. The 10 orders comprise both planktonic and benthic organisms, and include both free-living and parasitic forms. Planktonic copepods form the principle link between PHYTOPLANKTON and the higher trophic levels of the marine food chains.Chad: A republic in central Africa, east of NIGER, west of SUDAN and south of LIBYA. Its capital is N'Djamena.Zooplankton: Minute free-floating animal organisms which live in practically all natural waters.Crustacea: A large subphylum of mostly marine ARTHROPODS containing over 42,000 species. They include familiar arthropods such as lobsters (NEPHROPIDAE), crabs (BRACHYURA), shrimp (PENAEIDAE), and barnacles (THORACICA).Hospitals, Military: Hospitals which provide care for the military personnel and usually for their dependents.Pacific Islands: The islands of the Pacific Ocean divided into MICRONESIA; MELANESIA; and POLYNESIA (including NEW ZEALAND). The collective name Oceania includes the aforenamed islands, adding AUSTRALIA; NEW ZEALAND; and the Malay Archipelago (INDONESIA). (Webster's New Geographical Dictionary, 1988, p910, 880)Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Micronesia: The collective name for islands of the Pacific Ocean east of the Philippines, including the Mariana, PALAU, Caroline, Marshall, and Kiribati Islands. (From Webster's New Geographical Dictionary, 1988, p761 & Room, Brewer's Dictionary of Names, 1992, p350)Ethiopia: An independent state in eastern Africa. Ethiopia is located in the Horn of Africa and is bordered on the north and northeast by Eritrea, on the east by Djibouti and Somalia, on the south by Kenya, and on the west and southwest by Sudan. Its capital is Addis Ababa.Plants, Genetically Modified: PLANTS, or their progeny, whose GENOME has been altered by GENETIC ENGINEERING.Plant Leaves: Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Plant Extracts: Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.Plant Proteins: Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.Personal Space: Invisible boundaries surrounding the individual's body which are maintained in relation to others.Medicine in Literature: Written or other literary works whose subject matter is medical or about the profession of medicine and related areas.Empathy: An individual's objective and insightful awareness of the feelings and behavior of another person. It should be distinguished from sympathy, which is usually nonobjective and noncritical. It includes caring, which is the demonstration of an awareness of and a concern for the good of others. (From Bioethics Thesaurus, 1992)Holy Roman Empire: Realm in central Europe consisting of a confederation of German and Italian territories under the suzerainty of an emperor and existing from the 9th or 10th century to 1806.Islam: A monotheistic religion promulgated by the Prophet Mohammed with Allah as the deity.Social Facilitation: Any enhancement of a motivated behavior in which individuals do the same thing with some degree of mutual stimulation and consequent coordination.

New acetylenic glucosides from Bidens bipinnata LINNE. (1/21)

Two new acetylenic glucosides, 8Z-decaene-4,6-diyn-1-O-beta-D-glucopyranoside named bidenoside C, and 8E-decaene-4,6-diyn-3,10-dihydroxy-1-O-beta-D-glucopyranoside named bidenoside D, have been isolated from the aerial parts of Bidens bipinnata LINNE (Asterceae). These structures have been elucidated on the basis of spectroscopic methods.  (+info)

Synthesis and antioxidative activity of 3',4',6,7-tetrahydroxyaurone, a metabolite of Bidens frondosa. (2/21)

3',4',6,7-Tetrahydroxyaurone (1a), an aurone isolated from Bidens frondosa, and five analogues (1b-1f) were synthesized from pyrogallol in three steps. The antioxidative activity of 1a-1f was determined by the superoxide free radical and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging methods.  (+info)

Morphological and secretory characterization of extrafloral nectaries in plants of coastal Veracruz, Mexico. (3/21)

BACKGROUND AND AIMS: Morphological descriptions of the extrafloral nectaries (EFNs) of certain plant species are common in the literature, but they rarely relate morphology with histology, gland distribution and secretory attributes. In this study a morphological/secretory characterization of EFNs occurring on several plant species in a tropical coastal community is made and the implications of gland attributes discussed from a functional perspective. METHODS: The morphology and nectar secretion of the EFNs of 20 plant species are characterized through scanning electron microscopy, histochemical detection of reducing sugars (Fehling's reagent) and nectar volume/concentration estimates. KEY RESULTS: Sixty-five per cent of plant species in coastal communities had EFNs on vegetative structures and 35 % of species had glands on reproductive and vegetative organs. The Fabaceae is the plant family with the most species with EFNs and most diversity of gland morphologies. Four types of vascularized nectaries and four of glandular trichomes are described; sugar-secreting trichomes are characterized using Fehling's technique, and the first descriptions of unicellular and peltate trichomes functioning as EFNs are provided. Glands of ten plant species and six genera are described for the first time. Four plant species possess more than one morphological type of EFN. Eleven species have EFNs in more than one location or organ. More complex glands secrete more nectar, but are functionally homologous to the aggregations of numerous secretory trichomes on specific and valuable plant organs. CONCLUSION: Important diversity of EFN morphology was foundin the coastal plant community studied. Both vascularized and non-vascularized EFNs are observed in plants and, for the latter, previously non-existent morpho-secretory characterizations are provided with a methodological approach to study them. It is recommended that studies relating EFN attributes (i.e. morphology, distribution) with their differential visitation by insects (i.e. ants) and the cost of maintenance to the plants are carried out to understand the evolution of these glands.  (+info)

Anti-allergic Psidium guajava extracts exert an antitumor effect by inhibition of T regulatory cells and resultant augmentation of Th1 cells. (4/21)

Th1 polarization is one of the mechanisms underlying the therapeutic effects of herbal medicine. The action of anti-allergic agents from Psidium guajava (P. guajava) on T cell immunity in mice was investigated. The addition of P. guajava extracts blocked IL-10-mediated, in vitro induction of T regulatory (Tr) cells from CD4+ splenocytes of C57BL/6 mice, whereas the extracts exerted only a weak or no effect on the development of Th1 and Th2 cells. Accordingly, Tr cells were not induced from splenocytes of mice administered orally with the extracts. Furthermore, P. guajava extracts shifted the Th1/Th2 balance to a Th1 dominant status by directly attenuating Tr cell activity. In a study of tumor immunity, mice pretreated with the extracts exhibited retarded growth of s.c. inoculated B16 melanoma cells. These findings suggest that P. guajava extracts are efficacious for the prevention of tumor development by depressing Tr cells and subsequently shifting to Th1 cells.  (+info)

Screening for antimicrobial activity of ten medicinal plants used in Colombian folkloric medicine: a possible alternative in the treatment of non-nosocomial infections. (5/21)

BACKGROUND: The antimicrobial activity and Minimal Inhibitory Concentration (MIC) of the extracts of Bidens pilosa L., Bixa orellana L., Cecropia peltata L., Cinchona officinalis L., Gliricidia sepium H.B. & K, Jacaranda mimosifolia D.Don, Justicia secunda Vahl., Piper pulchrum C.DC, P. paniculata L. and Spilanthes americana Hieron were evaluated against five bacteria (Staphylococcus aureus, Streptococcus beta hemolitic, Bacillus cereus, Pseudomonas aeruginosa, and Escherichia coli), and one yeast (Candida albicans). These plants are used in Colombian folk medicine to treat infections of microbial origin. METHODS: Plants were collected by farmers and traditional healers. The ethanol, hexane and water extracts were obtained by standard methods. The antimicrobial activity was found by using a modified agar well diffusion method. All microorganisms were obtained from the American Type Culture Collection (ATCC). MIC was determined in the plant extracts that showed some efficacy against the tested microorganisms. Gentamycin sulfate (1.0 microg/ml), clindamycin (0.3 microg/ml) and nystatin (1.0 microg/ml) were used as positive controls. RESULTS: The water extracts of Bidens pilosa L., Jacaranda mimosifolia D.Don, and Piper pulchrum C.DC showed a higher activity against Bacillus cereus and Escherichia coli than gentamycin sulfate. Similarly, the ethanol extracts of all species were active against Staphylococcus aureus except for Justicia secunda. Furthermore, Bixa orellana L, Justicia secunda Vahl. and Piper pulchrum C.DC presented the lowest MICs against Escherichia coli (0.8, 0.6 and 0.6 microg/ml, respectively) compared to gentamycin sulfate (0.9 8 g/ml). Likewise, Justicia secunda and Piper pulchrum C.DC showed an analogous MIC against Candida albicans (0.5 and 0.6 microg/ml, respectively) compared to nystatin (0.6 microg/ml). Bixa orellana L, exhibited a better MIC against Bacillus cereus (0.2 microg/ml) than gentamycin sulfate (0.5 microg/ml). CONCLUSION: This in vitro study corroborated the antimicrobial activity of the selected plants used in folkloric medicine. All these plants were effective against three or more of the pathogenic microorganisms. However, they were ineffective against Streptococcus beta hemolytic and Pseudomonas aeruginosa. Their medicinal use in infections associated with these two species is not recommended. This study also showed that Bixa orellana L, Justicia secunda Vahl. and Piper pulchrum C.DC could be potential sources of new antimicrobial agents.  (+info)

Studies of anticancer and antipyretic activity of Bidens pilosa whole plant. (6/21)

Screening of different extracts and fractions from the plant Bidens pilosa Linn. var. (Asteraceae) has been conducted using the in-vitro comet assay for anticancer and the antipyretic action, which was done with in-vivo models. The extract from whole plant was extracted with n-hexane, chloroform and methanol extract (E1 - E3). The extracts were fractioned by column chromatography method and fractioned with ethyl acetate, acetone and water (F1 - F3). All the extracts and fractions were tested for anticancer and antipyretic activity. Among extracts E1 shows remarkable anticancer activity and E3 bears maximum antipyretic activity. In the antipyretic activity, paracetamol was used as the standard test drug. The most promising material (LC50 < 1500 microg/ml) was F1 ethyl acetate fractions of methanolic extract and methanolic crude extract of whole plants. However, little correlation was observed in the degree of antipyretic activity between the test drug and standard drug. In conclusion, the extract obtained from the whole plant of Bidens pilosa showed a significant cytotoxic effect to methanolic extract against Hela cells by in vitro method and showed a comparable antipyretic activity effect to paracetamol in rabbit pyrogen test.  (+info)

Two neolignan glucosides and antihistamine release activities from Bidens parviflora WILLD. (7/21)

Two new neolignan glucosides, bidenlignasides A (1) and B (2), were isolated from the whole plant of Bidens parviflora WILLD. The structures of the two new compounds 1 and 2 established to be 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-3-[5E-(3-hydroxypropenyl)-3-methoxy-2-O-b eta-D-glucosyl)phenyl] propan-1-one and 3-{3-[1,3-dihydroxy-3-(4-hydroxy-3-methoxyphenyl)propyl]-4-hydroxy-5-methoxypheny l}-allyl-O-beta-D-glucuside, respectively, on the basis of spectral and chemical evidence. Compounds 1 and 2 were found to inhibit histamine release from peritoneal exudate mast cells induced by antigen-antibody reaction.  (+info)

Antioxidant activity of extracts and flavonoids from Bidens tripartita. (8/21)

Extracts from herb and flowers of Bidens tripartita L. (Asteraceae), obtained using solvents of different polarity, were studied for their radical scavenging effects. Antioxidant activities of pure flavonoids: flavanomarein (isookanin 7-O-glucoside), cynaroside (luteolin 7-O-glucoside) and luteolin, which had been isolated from this plant, were also evaluated. Radical-scavenging activity was measured by electron paramagnetic resonance (EPR) spectroscopy using stable 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. The content of flavonoids in flower heads is half of that found in the herb; however, the extract from flowers showed that the antioxidant activity was almost two times higher there. Some extracts (n-BuOH fraction) showed long lasting radical scavenging activity and the EPR spectra were recorded in time to follow the reaction kinetics. Scavenging of DPPH showed second-order kinetics at the beginning of the assay period and later the first-order one. Different kinetics suggested the presence of polymerized and/or less active antioxidants with different scavenging mechanisms for particular polyphenolic compounds. Bur-marigold extracts are a potential source of natural antioxidants that may be used in pharmaceutical or food industry.  (+info)

  • Several Bidens species are used as food by the caterpillars of certain Lepidoptera, such as the noctuid moth Hypercompe hambletoni and the brush-footed butterfly Vanessa cardui, the painted lady. (
  • In addition to these new species, we recognize the following six species of Bidens previously described from the Marquesas Islands: Bidens beckiana (F. Br. (
  • Bidens polycephala has the widest distribution of the Marquesan species on five of the islands and exhibits considerable variation. (
  • On the whole, this species prefers a wetter and more springy habitat than the next two species [Bidens comosa and Bidens connata]. (
  • Litter mixture dominated by leaf litter of the invasive species, Flaveria bidentis, accelerates decomposition and favors nitrogen release. (
  • We conducted a 1-year litterbag experiment using leaf litters from the invasive species Flaveria bidentis (L.) and the dominant co-occurring native species, Setaria viridis (L.). Litters were allowed to decompose either separately or together at different ratios in a mothproof screen house. (
  • Here, then, is a quick overview of the genus, and descriptions of three garden-worthy Bidens species native to the United States - one of which is likely the Sweetbay Bidens . (
  • Bidens species are found across the U.S., often labelled weedy or invasive. (
  • Bidens are of special value to many species of bees, producing a dark, highly prized honey . (
  • At the same time, we discuss on morphological boundaries between Cosmos and Bidens and the infrageneric taxonomic relationship of B. herzogii based on morphology and the first chromosome count for the species. (
  • Funk's work shows that this Bidens species may represent the end of migration of the plant from North American to Tahiti. (
  • The aim of the present work was to evaluate the potential cyto- and genotoxicity of TBZ in the aquatic macrophyte Bidens laevis , exposed to a range of concentrations of 0.1-100 µg/L. Mitosis in root tips were analyzed showing decreased mitotic index and an increase of chromosomal aberrations at 10 and 100 µg/L. The regression of TBZ concentration vs. aneugenic aberrations was significant, indicating the mechanism of genotoxicity. (
  • Pérez DJ, Lukaszewicz G, Menone ML, Camadro EL (2011) Sensitivity of Bidens laevis L. to mutagenic compounds. (
  • Pérez DJ, Lukaszewicz G, Menone ML, Amé MV, Camadro EL (2014) Genetic and biochemical biomarkers in the macrophyte Bidens laevis L. exposed to a commercial formulation of endosulfan. (
  • Pérez DJ, Menone ML, Tognetti J, Lukaszewicz G (2018) Azoxystrobin induces chromosomal aberrations in roots of the hydrophyte Bidens laevis L. Revista Internacional de Contaminación Ambiental (RICA). (
  • Bidens laevis (L.)Britton et al. (
  • Bidens laevis (L.) Britton, Sterns & Poggenb. (
  • With just two weeks to go before Election Day, Trump for the first time explicitly called on Barr to investigate the Bidens and even pointed to the nearing Nov. 3 election as reason that Barr should not delay taking action. (
  • Trump has yet to specify what crime he believes the Bidens have committed, but that has not stopped him from going as far as suggesting to voters that Biden belongs in jail. (
  • I would recommend that they start an investigation into the Bidens," Trump said in response to a question on what he wanted Zelenskiy to do. (
  • As he left the White House for a visit to Florida, Trump also said he believed China should launch a probe of the Bidens, alluding to unproven allegations he and his lawyer have made about Hunter Biden's business dealings in China. (
  • President Trump urged Ukraine's president to investigate the Bidens with Attorney General William Barr and his lawyer Rudy Giuliani, a rough transcript of a call between the two leaders released Wednesday reveals. (
  • If Democrats are successful in winning the votes to have Bolton and Mulvaney testify, Trump has said Republicans should call the Bidens to testify, along with the still-unidentified government intelligence whistleblower who first disclosed Trump's request that Ukraine investigate the Bidens. (
  • Den liberale høyesterettsdommeren Ruth Bader Ginsburgs dødsfall har skapt en ledig stilling på den høyeste amerikanske domstolbenken som president Trump har som mål å få fylt med en ultrahøyre kandidat. (
  • Sen. Mitt Romney, R-Utah, presented one of the final questions of the evening, asking if there was "any evidence that anyone was directed by President Trump to tell the Ukrainians that security assistance was being held on condition of investigation into the Bidens? (
  • Shouting to reporters over the roar of the presidential helicopter from the White House lawn, Trump responded to a question about what he hoped to gain when he asked Zelensky to investigate the Bidens during that call. (
  • Alicia identifies her plants as Bidens aurea , but I found contradictions when I went looking for B. aurea seeds, for which there are surprisingly few sources in the United States. (
  • The problem was that B. aurea is described as having a five-petalled flower, occasionally six, but upon scrutiny, the Sweetbay Bidens have eight petals. (
  • Bidens aurea is native to Arizona in the U.S., reaching south to Chile. (
  • They should investigate the Bidens, because how does a company that's newly formed, and all these companies, if you look at - and by the way, likewise, China should start an investigation into the Bidens, because what happened to China is just about as bad as what happened with - with Ukraine. (
  • Trump's appeal to foreign leaders to investigate the Bidens appears to be a direct violation of campaign finance law. (
  • After his deposition, lawmakers released damning text messages shared between Volker and other State Department officials making clear that the U.S. would only improve relations with Ukraine if President Volodymyr Zelensky cooperated with Trump's demand that he investigate the Bidens. (
  • Sondland testified Wednesday that he did not know until very late that references to Burisma, the Ukrainian energy company, really was code for investigating the Bidens -- Joe Biden, the former vice president and Democratic candidate for president, and his son Hunter, who sat on Burisma's board. (
  • Browse and Shop Bidens Online - Annuals from Garden Crossings - We are a family owned small business specializing in high quality, locally grown garden plants here in West Michigan. (
  • The objective of the breeding program is to create new freely-branching Bidens plants with unique ray floret coloration. (
  • Plants of the new Bidens have not been observed under all possible combinations of environmental conditions and cultural practices. (
  • Plants of the new Bidens differ primarily from plants of the parent, `K-SAIKA001` in ray floret color as inflorescences of `K-SAIKA001` have subdued orange and yellow bi-colored ray florets. (
  • Bidens is prolific and one of the first plants to colonize disturbed ground. (
  • Tough, floriferous plants ring my bell, and, to go one better, Alicia notes that Bidens is a reliable re-seeder. (
  • M. E. Meléndez Camargo, B. Berdeja, and G. Miranda, "Diuretic effect of the aqueous extract of Bidens odorata in the rat," Journal of Ethnopharmacology , vol. 95, no. 2-3, pp. 363-366, 2004. (
  • In Latin, "bidens" means two teeth, referring to the two (sometimes more), barbs on each achene that readily attach to feathers, fur and clothing. (
  • Composition and Antidiarrheal Activity of Bidens odorata Cav. (
  • D. Zavala, Estudio Fitoquímico y Farmacológico de Bidens odorata Cav, Heliotropium curassavicum L y Chrysactinia mexicana Gray [Tesis de Maestría] , Universidad Autónoma Metropolitana, Unidad Xochimilco, Coyoacan Ciudad de México, México City, Mexico, 2006. (
  • Back in reality land, the 'Bama-Bidens are having some nosh at the Yankee Kitchen Family Restaurant in Pennsylvania over the weekend. (