| the plant cell defense and agrobacterium tumefaciens. | we previously identified changes in gene expression in ageratum conyzoides plant cells inoculated with agrobacterium tumefaciens by using cdna-aflp. here, we show that a subset of defense-related genes is differentially regulated by an agrobacterium attachment-deficient mutant. the expression pattern triggered by this mutant is similar to that induced by inoculation with non-pathogenic bacteria. we also observed that the expression level of the defense genes was inversely correlated with the eff ... | 2005 | 15936896 |
| interference of three weed extracts on uptake of nutrient in three different varieties of paddy through radio tracer techniques. | interference of three dominant weed extracts viz., ageratum conyzoides l., melilotus indica all. and parthenium hysterophorus l. were examined on seed germination, seedling growth, and nutrient uptake (32p and 65zn) in three different varieties (pd-10, pd-12 and pb) of paddy (oryza sativa l.). among the three different varieties irrespective of weed extracts, pd-10 and pd-12 were resistant and pb was susceptible in terms of seed germination, radicle length and plumule dry weight; and pd-12 and p ... | 2004 | 15907065 |
| antibacterial and wound healing properties of methanolic extracts of some nigerian medicinal plants. | this study was conducted to evaluate methanolic extracts of ageratum conyzoides, anthocleista djalonensis, napoleona imperialis, ocimum gratissimum, and psidium guajava for antibacterial and wound healing properties. antibacterial properties of the extracts were studied against eleven wound isolates (staphylococcus aureus (four strains), e. coli (two strains), pseudomonas aeruginosa (one strain), proteus spp. (three strains), and shigella spp. (one strain)) using the well diffusion method. wound ... | 2006 | 16226414 |
| activities of some brazilian plants against larvae of the mosquito aedes aegypti. | the insecticidal activities of extracts and oils of seventeen medicinal plants of brazil have been determined using an aedes aegypti larvicidal bioassay. oils from anacardium occidentalis, copaifera langsdorffii, carapa guianensis, cymbopogon winterianus and ageratum conyzoides showed high activities with lc50 values of 14.5, 41, 57, 98 and 148 microg/l, respectively. the most active ethanolic extract tested was that from the stem of annona glabra which presented an lc50 value of 27 microg/l. th ... | 2005 | 16253435 |
| screening of crude extracts of six medicinal plants used in south-west nigerian unorthodox medicine for anti-methicillin resistant staphylococcus aureus activity. | six nigerian medicinal plants terminalia avicennioides, phylantus discoideus, bridella ferruginea, ageratum conyzoides, ocimum gratissimum and acalypha wilkesiana used by traditional medical practitioners for the treatment of several ailments of microbial and non-microbial origins were investigated for in vitro anti-methicillin resistant staphylococcus aureus (mrsa) activity. | 2005 | 15762997 |
| antiinflammatory and chronic toxicity study of the leaves of ageratum conyzoides l. in rats. | the hydroalcoholic extract (hae) of ageratum conyzoides leaves was studied for its antiinflammatory effect on subacute (cotton pellet-induced granuloma) and chronic (formaldehyde-induced arthritis) models of inflammation in rats. the absence or presence of toxicity by prolonged use of hae was also evaluated through biochemical and hematological analysis of rats blood samples using daily oral doses of 250 or 500 mg/kg body wt., during 90 days. the results showed that the group of rats treated wit ... | 2005 | 15693721 |
| antitumour activity of some plants from meghalaya and mizoram against murine ascites dalton's lymphoma. | total five plants, three from mizoram (dillenia pentagyna, ageratum conyzoides, blumea lanceolaria) and two from meghalaya (potentilla fulgens, taxus baccata) were studied for their antitumour activity against murine ascites dalton's lymphoma (dl) in vivo. only three plants showed the different magnitude of antitumour activity. out of these three plants, the antitumour activity was maximally observed with the methanol extract of the stem bark of d. pentagyna as compared to the aqueous extract of ... | 2004 | 15511001 |
| do aloe vera and ageratum conyzoides enhance the anti-microbial activity of traditional medicinal soft soaps (osedudu)? | the nigerian traditional soft soaps prepared using varied locally sourced raw materials such as cocoa pod ash (theobroma cacao) palm kernel shaft ash (elaies guineensis) have been evaluated for their physico-chemical properties and anti-microbial activities using standard pharmacopoeia protocols and an in-vitro agar diffusion bioassay method. the anti-microbial evaluation was done with and without incorporation of aloe vera and ageratum conyzoides extractives into the soap samples. results showe ... | 2004 | 15099848 |
| a comparative study of the wound healing properties of honey and ageratum conyzoides. | the present study investigates the wound healing properties of methanolic extracts of ageratum conyzoides leaves compared with those of honey. thirty wistar rats were randomized into 3 groups of 10 animals each. they were fed with standard rat cubes and tap water weighed and acclimatized to laboratory conditions for one week. under anesthesia, each animal had the skin of its dorsolateral flank shaved after which an area of the skin was excised. on achieving haemostasis, the wounds were packed wi ... | 2003 | 15032468 |
| evaluation of the radioprotective effect of ageratum conyzoides linn. extract in mice exposed to different doses of gamma radiation. | the effect of various doses (0, 25, 50, 75, 100, 125, 150, 300, 600 and 900 mg kg(-1)) of the alcoholic extract of the plant ageratum conyzoides linn. (ace), on the alteration of radiation-induced mortality in mice exposed to 10 gy of gamma radiation was studied. the acute toxicity studies showed that the drug was non-toxic up to a dose of 3000 mg kg(-1), the highest dose that could be tested for acute toxicity. administration of ace resulted in a dose-dependent decline in radiation-induced mort ... | 2003 | 12956906 |
| assessment of potential indigenous plant species for the phytoremediation of arsenic-contaminated areas of bangladesh. | soil and water contaminated with arsenic (as) pose a major environmental and human health problem in bangladesh. phytoremediation, a plant-based technology, may provide an economically viable solution for remediating the as-polluted sites. the use of indigenous plants with a high tolerance and accumulation capacity for as may be a very convenient approach for phytoremediation. to assess the potential of native plant species for phytoremediation, plant and soil samples were collected from four as ... | 2008 | 18709925 |
| the gastroprotective activity of the ethanol extract of ageratum conyzoides. | the ethanol extract of ageratum conyzoides was evaluated for gastroprotection in rats using the ibuprofen, ethanol and cold restraint stress ulcer models. efficacy was assessed by determination of mean ulcer size, ulcer number and ulcer index. oral administration of the ethanol extract at dose levels of 500 and 750 mg/kg significantly protected gastric lesions by 80.59 and 89.33%, respectively, as compared to misoprostol (74.43%) in the ibuprofen model; by 97.09 and 99.24%, respectively, in the ... | 2003 | 12686450 |
| allelopathic potential and chemical constituents of volatiles from ageratum conyzoides under stress. | the allelopathic potential of ageratum conyzoides was investigated under different environmental stress conditions, including nutrient deficiency. physical damage, 2.4-d treatment, competition with bidens pilosa, infection with erysiphe cichoracearum, and feeding by aphiids gossypii. the inhibitory effects of a. conyzoides volatiles on peanut (arachis hypogaea), redroot amaranth (amaranthus retroflexus), cucumber (cucumis sativus), and ryegrass (lolium multiforum) increased when plants were grow ... | 2002 | 12184395 |
| characterisation of sri lankan cassava mosaic virus and indian cassava mosaic virus: evidence for acquisition of a dna b component by a monopartite begomovirus. | two bipartite begomoviruses, indian cassava mosaic virus (icmv) and sri lankan cassava mosaic virus (slcmv), have been isolated from mosaic-diseased cassava originating from central india and sri lanka, respectively. icmv was transmitted with low efficiency from cassava to nicotiana benthamiana by sap inoculation to give leaf curl symptoms. slcmv was much more virulent in this host, producing severe stunting, leaf curl, and chlorosis. these symptoms were reproduced when their cloned genomic comp ... | 2002 | 11853400 |
| ageratum conyzoides essential oil as aflatoxin suppressor of aspergillus flavus. | aflatoxin b(1) (afb(1)) is a highly toxic and carcinogenic metabolite produced by aspergillus species on food and agricultural commodities. inhibitory effects of essential oil of ageratum conyzoides, on the mycelial growth and aflatoxin b(1) production by aspergillus flavus were studied. cultures were incubated in yeast extract-sucrose (yes) broth for days at 25 degrees c at the following different concentrations of the essential oil (from 0.0 to 30mug/ml). the essential oil inhibited fungal gro ... | 2010 | 19906457 |
| plant gene expression response to agrobacterium tumefaciens. | to elucidate the nature of plant response to infection and transformation by agrobacterium tumefaciens, we compared the cdna-amplified fragment length polymorphism (aflp) pattern of agrobacterium- and mock-inoculated ageratum conyzoides plant cell cultures. from 16,000 cdna fragments analyzed, 251 (1.6%) were differentially regulated (0.5% down-regulated) 48 h after cocultivation with agrobacterium. from 75 strongly regulated fragments, 56 were already regulated 24 h after cocultivation. sequenc ... | 2001 | 11535836 |
| identification of dna components required for induction of cotton leaf curl disease. | cotton leaf curl disease (clcud) is a major constraint to cotton production in pakistan. infectious clones of the monopartite begomovirus cotton leaf curl virus (clcuv), associated with diseased cotton, are unable to induce typical symptoms in host plants. we have identified and isolated a single-stranded dna molecule approximately 1350 nucleotides in length which, when coinoculated with the begomovirus to cotton, induces symptoms typical of clcud, including vein swelling, vein darkening, leaf c ... | 2001 | 11437658 |
| effect of essential oils from leaves of ageratum conyzoides, lantana camara and chromolaena odorata on the mortality of sitophilus zeamais (coleoptera, curculionidae). | ageratum conyzoides, chromolaena odorata, and lantana camara, are common weed species in cameroon. essential oil extracts from their leaves were tested for efficacy on the morality of the maize grain weevil, sitophilus zeamais (coleoptera, curculionidae). concentrations of the essential oils relative to the maize grains of 0.013, 0.025, 0.05 and 0.1% (v/w) were used for a. conyzoides and 0.063, 0.125, 0.25 and 0.50% (v/w) for c. odorata and l. camara. twenty 7-day old adult weevils were fed on m ... | 2001 | 11124374 |
| a unique virus complex causes ageratum yellow vein disease. | ageratum conyzoides l., a weed species widely distributed throughout southeast asia, frequently exhibits striking yellow vein symptoms associated with infection by ageratum yellow vein virus (ayvv), a member of the geminiviridae (genus begomovirus). most begomoviruses have bipartite genomes (dnas a and b), but only a dna a has been identified for ayvv. we demonstrate that yellow vein disease of a. conyzoides results from co-infection by ayvv dna a (2,741 nt) and a circular dna that is approximat ... | 2000 | 10841581 |
| effects of the water soluble fraction from leaves of ageratum conyzoides on smooth muscle. | the water soluble fraction of ageratum conyzoides l. (wsf) was studied in isolated rat uterus and intestinal smooth muscles in order to evaluate its popular use as a spasmolytic. wsf (0.2 and 0.4 mg/ml) increased ec(50) values and decreased maximum responses to acetylcholine and calcium chloride. wsf (0.5-3.3 mg/ml) also produced direct myorelaxant effect on smooth muscle preparations. theophylline (10(-3) m) potentiated the relaxant action of wsf. theophylline also prevented the decrease in max ... | 2000 | 10685113 |
| ethnomedicinally selected plants as sources of potential analgesic compounds: indication of in vitro biological activity in receptor binding assays. | a number of plant species used in traditional medicine for the relief of pain have been selected from the medicinal and scientific literature of china, south america, asia and west africa. extracts were prepared and tested in three in vitro receptor radioligand binding assays to determine whether there was an indication of biological activity, in particular their selectivity to a single receptor implicated in the mediation of pain. the three neuropeptide receptors chosen were bradykinin (bk ii), ... | 2000 | 10641043 |
| a nanovirus-like dna component associated with yellow vein disease of ageratum conyzoides: evidence for interfamilial recombination between plant dna viruses. | yellow vein disease of ageratum conyzoides, a weed species that is widely distributed throughout asia, has been attributed to infection by the geminivirus ageratum yellow vein virus (ayvv). in addition to a single ayvv genomic component (dna a), we have previously demonstrated that infected plants contain chimeric defective viral components, comprising dna a and nongeminiviral sequences, that act as defective interfering dnas. a database search has revealed that the nongeminiviral sequences of o ... | 1999 | 10544139 |
| preliminary screening of ethnomedicinal plants from india. | antibacterial activity of aqueous residues of 16 different ethnomedicinal plants have been studied. the effect of the aqueous extract at two different weights of plant residues, 30 and 40 mg, were tested against three gram positive bacteria and seven gram negative bacteria by the filter paper disc diffusion method. among the tested plants, cleome gynandropsis and ageratum conyzoides showed a significant control of the growth of alkaligens viscolactis, klebsiella aerogenas, bacillus cerues and st ... | 1999 | 10433484 |
| electrophysiological effects of ageratum conyzoides l. on the guinea-pig heart. | an extract obtained from the leaves of ageratum conyzoides l. changed the electrocardiogram, atrial impulse velocity, and coronary vessels resistance on isolated guinea-pig heart. electrocardiographic alterations were: (a) pr interval increased from 80 +/- 1.4 ms to 105 +/- 14 ms (p < 0.01); (b) qt interval decreased from 170 +/- 2 ms to 154 +/- 7 ms (p < 0.01); (c) heart rate decreased from 170 +/- 17 bpm to 152 +/- 21 bpm (p < 0.01);(d) atrial impulse velocity decreased from 51 +/- 2 cm/s to 4 ... | 1999 | 10190197 |
| [analgesic effects of a raw extract of ageratum conyzoïdes in the rat]. | ageratum conyzoïdes (ac) is a plant used in traditional medicine for mental and infection diseases, cephalgia, dyspnea, enteralgia and fever. the objective of this study is to investigate the antinoceptive properties of ageratum conyzoïdes in the rat. the raw extract of ac is constituted by a lyophilisated powder obtained from leaves juice extract by using a crusher. a dilution of 1% in nacl 0.9% is prepared with the lyophilisat. several doses of this preparation; 25, 50, 100, 125, 150 mg/kg are ... | 1993 | 8275920 |
| isolation and identification of pollen allergens of artemisia scoparia. | the allergenic proteins of artemisia scoparia pollen were separated and identified with ammonium sulfate precipitation, ion-exchange chromatography, gel filtration, and rast-inhibition techniques. the important allergenic component artemisia vi b that constitutes 29% of total protein in the extract was purified to homogeneity. it was found to be an acidic protein with isoelectric point 3.8 and molecular weight of 14,300. it was rich in carbohydrate, but the carbohydrate portion did not appear to ... | 1987 | 3668120 |
| pharmacological screening of ageratum conyzoides l. (mentrasto). | the pharmacological activities of a water extract (we) of ageratum conyzoides l, a plant popularly known for its analgesic and anti-inflammatory properties, were studied in vivo and in vitro preparations. oral administration (p.o.) of the water extract (we, 0.1 to 5 g/kg) to rats and mice induced quietness and reduced the spontaneous motility. the sleeping time induced by sodium pentobarbital (50 mg/kg, i.p.) in mice was not altered by previous treatment with we (2 g/kg, p.o.). the same treatmen ... | 1991 | 1841989 |
| laboratory assessment of indigenous plant extracts for anti-juvenile hormone activity in culex quinquefasciatus. | of 15 plants tested, five plant extracts showed anti-juvenile hormone-like activity against laboratory colonised late fourth instar larvae and adult female mosquitoes. petroleum ether extract of eichhornia crassipes and acetone extracts of ageratum conyzoides, cleome icosandra, tagetes erectes and tridax procumbens showed growth inhibitory (p less than 0.001) and juvenile hormone mimicing activity to the treated larvae of c. quinquefasciatus.. larval pupal intermediates, demalanised pupae, defec ... | 1992 | 1398811 |
| in vitro evaluation of ethanolic extracts of ageratum conyzoides and artemisia absinthium against cattle tick, rhipicephalus microplus. | in vitro efficacy of ethanolic extracts obtained from the aerial parts of ageratum conyzoides and artemisia absinthium was assessed on rhipicephalus microplus using adult immersion test (ait). five concentrations of the extract (1.25%, 2.5%, 5%, 10%, and 20%) with three replications for each concentration were used in the bioassay. in ait, the maximum mortality was recorded as 40% and 66.7% at 20% concentration for a. conyzoides and a. absinthium, respectively. acaricidal activity was found to b ... | 2014 | 25525626 |
| antibacterial property of crude extracts from a herbal wound healing remedy-ageratum conyzoides, l. | | 1977 | 594219 |
| volatile allelochemicals in the ageratum conyzoides intercropped citrus orchard and their effects on mites amblyseius newsami and panonychus citri. | ageratum conyzoides l. weed often invades cultivated fields and reduces crop productivity in southeast asia and south china. however, intercropping this weed in citrus orchards may increase the population of predatory mite amblyseius newsami, an effective natural enemy of citrus red mite panonychus citri, and keep the population of p. citri at low and noninjurious levels. this study showed that a. conyzoides produced and released volatile allelochemicals into the air in the intercropped citrus o ... | 2005 | 16132220 |
| pcr-based detection and partial genome sequencing indicate high genetic diversity in bangladeshi begomoviruses and their whitefly vector, bemisia tabaci. | the population diversity of bangladeshi begomoviruses and their vector, bemisia tabaci was analysed by pcr-based detection and partial genome sequencing. b. tabaci adults and plants expressing symptoms of virus infection were collected from locations representing diverse agro-ecological regions of the country. universal and species-specific primers were used to detect begomoviruses in seven crops (chilli, okra, papaya, pumpkin, sponge gourd, tomato and yardlong bean) and two common weeds (agerat ... | 2007 | 16927121 |
| ethnomedicines used in trinidad and tobago for reproductive problems. | throughout history women have tried to control or enhance their fertility using herbal remedies, with various levels of societal support. caribbean folk medicine has been influenced by european folk medicine, either through the early spanish and french settlers or through the continuous immigration of spanish-speaking peoples from venezuela. some folk uses are ancient and were documented by galen and pliny the elder. | 2007 | 17362507 |
| compounds from ageratum conyzoides: isolation, structural elucidation and insecticidal activity. | this work aimed at identifying plant compounds with insecticidal activity against diaphania hyalinata (l.) (lepidoptera: pyralidae), musca domestica (l.) (diptera: muscidae), periplaneta americana (l.) (blattodea: blattidae) and rhyzopertha dominica (f.) (coleoptera: bostrichidae). the plant species used were: basil (ocimum selloi benth.), rue (ruta graveolens l.), lion's ear (leonotis nepetaefolia l.), jimson weed (datura stramonium l.), 'baleeira' herb (cordia verbenaceae l.), mint (mentha pip ... | 2007 | 17469080 |
| in vitro anti-helicobacter pylori activity of extracts of selected medicinal plants from north west cameroon. | helicobacter pylori, a gram negative microaerophilic bacterium is a major etiological agent in duodenal, peptic and gastric ulcers. the growing problem of antibiotic resistance by the organism demands the search for novel compounds from plant based sources. | 2007 | 17913416 |
| novel defective interfering dnas associated with ageratum yellow vein geminivirus infection of ageratum conyzoides. | defective dna forms of the geminivirus ageratum yellow vein virus (ayvv) have been identified in naturally infected ageratum conyzoides plants. several examples of the defective dna have been cloned from purified virus-specific supercoiled dna and characterized by sequence analysis. all are approximately half the size of ayvv genomic dna, and all contain intergenic region sequences and the 5' terminus of gene c1 as well as additional sequences that are unrelated to the viral genomic dna. the chi ... | 1997 | 9426449 |
| radioprotective potential of plants and herbs against the effects of ionizing radiation. | ionizing radiations produce deleterious effects in the living organisms and the rapid technological advancement has increased human exposure to ionizing radiations enormously. there is a need to protect humans against such effects of ionizing radiation. attempts to protect against the deleterious effects of ionizing radiations by pharmacological intervention were made as early as 1949 and efforts are continued to search radioprotectors, which may be of great help for human application. this revi ... | 2007 | 18188408 |
| haematopoietic properties of ethanolic extract of ageratum conyzoides (goat weed) in albino rats. | the potential haematological effects associated with the administration of ethanolic leaf extract of ageratum conyzoides was investigated in rats. 27 rats were randomly divided into four groups. the first group had 6 rats and served as control, the remaining 3 experimental groups and had 7 rats each. these later groups were gavaged with the extract of ageratum conyzoides in concentrations of 200 mg/kg, 400 mg/kg and 500 mg/kg respectively for 30 days at a dose of 0.1 ml/body weight. the control ... | 2007 | 18379624 |
| fossil pollen as a guide to conservation in the galapagos. | paleoecological evidence from the past 8000 years in the galápagos islands shows that six presumed introduced or doubtfully native species (ageratum conyzoides, borreria laevis/diodia radula-type, brickellia diffusa, cuphea carthagenensis, hibiscus diversifolius, and ranunculus flagelliformis) are in fact native to the archipelago. fossil pollen and macrofossils from four sites in the highlands of santa cruz island reveal that all were present thousands of years before the advent of human impact ... | 2008 | 19023075 |
| potential of essential oils for protection of grains contaminated by aflatoxin produced by aspergillus flavus. | aflatoxin b1 (afb1) is a highly toxic and carcinogenic metabolite produced by aspergillus species on food and agricultural commodities. inhibitory effects of essential oils of ageratum conyzoides (mentrasto) and origanum vulgare (oregano) on the mycelial growth and aflatoxin b1 production by aspergillus flavus have been studied previously in culture medium. the aim of this study was to evaluate aflatoxin b1 production by aspergillus flavus in real food systems (corn and soybean) treated with age ... | 2014 | 24926289 |
| anticoccidial effects of ageratum conyzoides. | ageratum conyzoides (asteraceae) is folklorically used to treat diseases associated with bleeding. a study was conducted to determine the efficacy of ageratum conyzoides in treating caecal coccidiosis of broilers. acute toxicity test was done using thirty 28 days old broiler chicks which were divided into six groups of five birds each. the birds were given 250-3000 mg of extract/kg bodyweight orally. group vi received equal volumes of distilled water. the birds were observed for 24h for signs of ... | 2009 | 19084586 |
| repellent activity of plant-derived compounds against amblyomma cajennense (acari: ixodidae) nymphs. | repellence responses of amblyomma cajennense nymphs to callicarpenal, intermedeol, hyptis suaveolens essential oil, extract of melia azedarach, cymbopogon nardus, spiranthera odoratissima, chenopodium ambrosioides, ageratum conyzoides, mentha pulegium, ruta graveolens, and memora nodosa were studied. among these the extract of c. nardus stood out because of the long-lasting repellence, maintaining, in the highest concentration, 35h of protection against 90% of the nymphs. the essential oil of h. ... | 2010 | 19897309 |
| hypoglycaemic and antihyperglycaemic activity of ageratum conyzoides l. in rats. | the hypoglycaemic and antihyperglycaemic properties of the aqueous extracts of the leaves of ageratum conyzoides l. were evaluated in normoglycemic and in streptozotocin-induced diabetic rats, in order to validate its use in folk medicine. tested animals were given the aqueous extracts of the plant at the doses of 100, 200 and 300mg/kg. these doses were tested also on glucose loaded normal male rats (oral glucose tolerance test). of all the doses, the aqueous extracts at 200 and 300mg/kg showed ... | 2009 | 20209003 |
| potential therapeutic use of herbal extracts in trypanosomiasis. | the aim of the present study was to evaluate the effects of crude extracts from handroanthus impetiginosa, ageratum conyzoides, and ruta graveolens on leishmania amazonensis and trypanosoma cruzi infection in vitro. the results showed that the extracts caused significant toxicity in promastigotes and trypomastigotes. a significant decrease in the rate of cell invasion by pretreated trypomastigotes and promastigotes was also observed. the extracts caused a significant reduction of the multiplicat ... | 2014 | 24548158 |
| the antiprotozoal activity of methylated flavonoids from ageratum conyzoides l. | the dichloromethane extract prepared from aerial parts of ageratum conyzoides l. (asteraceae), a plant commonly used in folk medicine for a number of illnesses including sleeping sickness, was recently found to exhibit a prominent activity (ic(50)=0.78 microg/ml) against bloodstream forms of trypanosoma brucei rhodesiense, the etiologic agent of east african human trypanosomiasis (east african sleeping sickness). this extract also exhibited noticeable activities against leishmania donovani (kala ... | 2010 | 20219663 |
| serum protein and enzyme levels in rats following administration of ethanolic leaf extract of ageratum conyzoides (goat weed). | the the potential hepatotoxic effects following oral administration of ethanolic leaf extract of ageratum conyzoides (goat weed) was investigated in albino wistar rats. twenty eight (28) adult male wistar rats were uniformly divided into four groups of seven rats each. group 1 served as control while groups 2, 3 and 4 were respectively gavaged with 200 mg/kg body weight, 400 mg/kg body weight and 600 mg/kg body weight of the extract daily for 21 days. at the end of treatments, animals were sacri ... | 2009 | 20234750 |
| antiaflatoxigenic and antioxidant activity of an essential oil from ageratum conyzoides l. | aflatoxin contamination of various commodities can occur as a result of infection, mainly by aspergillus flavus and aspergillus parasiticus. every year, almost 25% of the world's food supply is contaminated by mycotoxins. aflatoxins b(1), b(2), g(1) and g(2), which occur naturally, are significant contaminants of a wide variety of commodities. a number of biological activities have been associated with ageratum conyzoides. we have therefore investigated the antiaflatoxigenic, antioxidant and ant ... | 2010 | 20355088 |
| anticancer and antiradical scavenging activity of ageratum conyzoides l. (asteraceae). | ageratum conyzoides has been used in folklore for the treatment of a wide range of diseases. in the present investigation, the in vitro activity of ethanol, petroleum ether, ethylacetate, butanol, and water extracts of a. conyzoides were screened in some cancer cell lines using the sulphorhodamine b (srb) assay. these cell lines include: human non-small cell lung carcinoma (a-549), human colon adenocarcinoma (ht-29), human gastric carcinoma (sgc-7901), human golima (u-251), human breast carcinom ... | 2010 | 20548938 |
| schistosomicidal activity of the essential oil of ageratum conyzoides l. (asteraceae) against adult schistosoma mansoni worms. | the in vitro schistosomicidal effects of the essential oil of ageratum conyzoides l. (ac-eo) against adult worms of schistosoma mansoni is reported in this paper. concerning this activity, ac-eo was considered to be active, but less effective than the positive control (praziquantel, pzq) in terms of separation of coupled pairs, mortality, decrease in motor activity, and tegumental alterations. however, ac-eo caused an interesting dose-dependent reduction in the number of eggs of s. mansoni. prec ... | 2011 | 21245809 |
| plants containing pyrrolizidine alkaloids: toxicity and problems. | pyrrolizidine alkaloids (pa) are toxic for human and livestock. they undergo a metabolic toxication process in the liver which is the first target organ for pa poisoning. worldwide many episodes of human pa intoxications are well reported. in many cases the reason for these intoxications has been pa contamination in food. the main tools for analysing food and fodder on pa content are based on gc and hplc separation, followed by ms(-ms) detection. actual incidents with toxic pa are the 'jacobaea ... | 2011 | 21360374 |
| clinodiplosis agerati (diptera, cecidomyiidae), a new galling species associated with ageratum conyzoides (asteraceae) from brazil. | clinodiplosis agerati, a new galling species that induces stem galls on ageratum conyzoides (asteraceae) is described and illustrated (larva, pupa, male, female and gall) based on material collected in minas gerais, brazil. the new species is compared with the other neotropical species. this is the first record of the clinodiplosis in ageratum. | 2016 | 27097086 |
| volatile oils from the plant and hairy root cultures of ageratum conyzoides l. | two lines of hairy root culture of ageratum conyzoides l. induced by agrobacterium rhizogenes atcc 15834 were established under either complete darkness or 16 h light/8 h dark photoperiod conditions. the volatile oil yields from aerial parts and roots of the parent plant, the hairy root culture photoperiod line and the hairy root culture dark line were 0.2%, 0.08%, 0.03% and 0.02%, (w/w), respectively. the compositions of the volatiles from the hairy roots, plant roots and aerial parts were anal ... | 2011 | 21547842 |
| when is an invasive not an invasive? macrofossil evidence of doubtful native plant species in the galápagos islands. | the galápagos islands are globally renowned for their ecological value and as a world symbol of scientific discovery; however the native biodiversity of this unique region is currently under threat. one of the primary concerns is the detrimental impact of approximately 750 nonnative plants introduced over the last 500 years of human presence in the archipelago. in addition to these known introduced species, there are an additional 62 vascular plants classified as "doubtful natives," where nativ ... | 2011 | 21661543 |
| encecalol angelate, an unstable chromene from ageratum conyzoides l.: total synthesis and investigation of its antiprotozoal activity. | in agreement with ethnomedicinal reports, the dichloromethane extract of ageratum conyzoides l. (asteraceae) was recently shown to be of considerable activity against trypanosoma brucei rhodesiense, the etiologic agent of east african human trypanosomiasis (east african sleeping sickness). isolated compounds, namely, methoxylated flavonoids as well as the chromene derivative encecalol methyl ether, were less active than the crude extract. the activity of the extract was found to decrease conside ... | 2011 | 21708240 |
| characterization of biochar obtained from weeds and its effect on soil properties of north eastern region of india. | in the global climate change scenario, application of biochar in soil has become one of the important management practices for carbon sequestration, soil health improvement and climate change mitigation. in this study, an attempt was made to see the effect of biochar prepared from weed biomass on soil properties in subtropical northeast india. biochar were prepared from seven locally available weed biomass viz. ageratum conyzoides, lantana camera, gynura sp., setaria sp., avena fatua, maize stal ... | 2015 | 25895276 |
| ethnomedicinal plants used to treat skin diseases by tharu community of district udham singh nagar, uttarakhand, india. | tharu community is the largest primitive indigenous community of the uttarakhand, india. in this article we have scientifically enumerated medicinal plants and herbal preparations used by the tharu community to treat various skin diseases, and discussed dermatological properties of these plants in the light of previous ethnomedicinal, microbiological, pharmacological, toxicological, phytochemical and clinical studies. | 2014 | 25448505 |
| ageratum conyzoides: a host to a unique begomovirus disease complex in cameroon. | ageratum conyzoides (goat weed) is a widespread uncultivated species in cameroon that exhibits leaf curl disease (lcd) symptoms suggestive of begomovirus infection. in asia, different begomovirus-satellite complexes have been identified in a. conyzoides. the objective of this study was to determine the identity of the suspect begomoviruses and their associated satellites in a. conyzoides in cameroon. the results indicated that all three symptomatic a. conyzoides plants examined were infected wit ... | 2011 | 22001569 |
| antimicrobial and herbal drug resistance in enteric bacteria isolated from faecal droppings of common house lizard/gecko (hemidactylus frenatus). | from 194 faecal dropping samples of common house geckos collected from offices (60), houses (88), integrated farm units (ifs,18) and hostels, guest houses, and dining rooms of different canteen/mess (hgm, 28), 326 bacterial isolates of enteric bacteria belonging to 17 genera and 34 species were detected. escherichia coli were the most frequently (39) isolated followed by citrobacter freundii (33), klebsiella pneumonia (27), salmonella indica (12), enterobacter gergoviae (12), and ent. agglomeran ... | 2013 | 24223595 |
| antibacterial activity of six medicinal cameroonian plants against gram-positive and gram-negative multidrug resistant phenotypes. | infectious diseases due to multidrug-resistant bacteria are one of the causes of treatment failures contributing to an increase in mortality and/or morbidity. in this study, we evaluated the antibacterial potential of different parts of six medicinal plants namely alstonia boonei, ageratum conyzoides, croton macrostachys, cassia obtusifolia, catharanthus roseus and paullinia pinnata against a panel of 36 multi-drug resistant (mdr) gram-negative and gram-positive bacteria. | 2016 | 27724917 |
| ageratum yellow vein china virus is a distinct begomovirus species associated with a dnabeta molecule. | abstract ageratum conyzoides plants exhibiting yellow vein symptoms, collected near haikou, hainan province, china, contained begomoviral dna-a-like molecules. the complete sequences of the molecules from two samples, hn2 and hn2-19, were shown to consist of 2,768 and 2,748 nucelotides (nt), respectively. these sequences have more than 97% nucleotide sequence identity, but less than 86% identity with other reported begomovirus sequences. in line with the taxonomic convention for begomoviruses, h ... | 2007 | 18943280 |
| a begomovirus associated with ageratum yellow vein disease in indonesia: evidence for natural recombination between tomato leaf curl java virus and ageratum yellow vein virus-[java]. | a begomovirus (2747 nucleotides) and a satellite dna beta component (1360 nucleotides) have been isolated from ageratum conyzoides l. plants with yellow vein symptoms growing in java, indonesia. the begomovirus is most closely related to tomato leaf curl java virus (tolcjv) (91 and 98% in the total nucleotide and coat protein amino acid sequences, respectively), although the products of orfs c1 and c4 are more closely related to those of ageratum yellow vein virus-[java] (91 and 95% identity, re ... | 2007 | 17294343 |
| subviral dnas associated with geminivirus disease complexes. | ageratum conyzoides (ageratum) is a common and widespread weed species that may act as a reservoir host for geminivirus diseases. ageratum plants growing in singapore and exhibiting yellow vein disease are infected with a complex mixture of viral, subviral and recombinant dna components. this whitefly-transmitted disease is caused by the monopartite begomovirus ageratum yellow vein virus (ayvv) in association with a recently discovered satellite component referred to as dna beta. diseased plants ... | 2004 | 14741124 |
| traditional medicinal plants in nigeria--remedies or risks. | soil pollution due to increasing industrialization is a reality that is taking its toll on mankind today. considering the population of people that use herbal remedies especially in developing countries and the discharge of industrial waste on surrounding herbal vegetation, it is imperative to determine the heavy metals contamination in some commonly used medicinal plants. | 2013 | 24095699 |
| pathogenicity of a natural recombinant associated with ageratum yellow vein disease: implications for geminivirus evolution and disease aetiology. | yellow vein disease of ageratum conyzoides is caused by a viral dna complex consisting of the genomic component (dna a) of the monopartite begomovirus ageratum yellow vein virus (ayvv, family: geminiviridae) and a small satellite-like dna beta component. ayvv dna a is unable to induce symptoms in this host alone but can systemically infect a. conyzoides in which it accumulates to low levels. here, we demonstrate that the yellow vein phenotype can also be produced by co-inoculating a. conyzoides ... | 2001 | 11259188 |
| genome organization of ageratum yellow vein virus, a monopartite whitefly-transmitted geminivirus isolated from a common weed. | a full-length copy of a single genomic component of the whitefly-transmitted geminivirus ageratum yellow vein virus (ayvv) has been cloned from an extract of infected ageratum conyzoides originating from singapore. sequence analysis shows that the genomic component encodes two virion-sense (v1 and v2) and four complementary-sense open reading frames (c1-c4), typical of dna a of whitefly-transmitted geminiviruses from the eastern hemisphere. a genomic component equivalent to dna b was not detecte ... | 1995 | 8847495 |
| inhibition of plant transformation by phytolaccoside b from phytolacca americana callus. | the newly established gus expression bioassay on the callus extracts of 22 species of plants revealed that the methanol extract of phytolacca americana callus had the most potent inhibitory activity against agrobacterial plant transformation. a triterpene glycoside phytolaccoside b was isolated from the extract as a genuine plant transformation inhibitor having neither antiagrobacterial nor phytotoxic activity. this compound is promising for use as a biochemical probe for studies on the plant tr ... | 1999 | 27389651 |
| ageratum conyzoides attenuates alcohol induced liver toxicity in male wistar rats. | ageratum conyzoides (ac) is unique for its antioxidant activity and protective role to tissues. however this property is yet to be demonstrated in animals administered toxic alcohol concentrations. | 2014 | 24579495 |
| hypoglycaemic activity of commelina africana and ageratum conyzoides in relation to their mineral composition. | many plants with antidiabetic properties probably act in part through their content of fibre, vitamins, bioactive or mineral content | 2012 | 23056028 |
| bioactivity evaluation against artemia salina leach of medicinal plants used in brazilian northeastern folk medicine. | the brine shrimp (artemia salina leach) lethality bioassay offers an advantage in standardization and quality control of botanical products. this test is well correlated with antitumor activity (cytotoxicity) and can be used to monitor the activity of bioactive natural products. this paper reports the bioactivity of ethanol extracts from seven medicinal plants from the northeast of brazil (acmella uliginosa, ageratum conyzoides, eugenia uniflora, plectranthus neochilus, moringa oleifera, justici ... | 2012 | 22990821 |
| ethno medicinal survey of plants used by the indigenes of rivers state of nigeria. | the medicinal plants used in the traditional medicine of rivers state of nigeria were surveyed. | 2012 | 22881140 |
| efficacy of ageratum conyzoides on tissue repair and collagen formation in rats. | wound healing occurs as a fundamental response to tissue injury. several natural products have been shown to accelerate the healing process. | 2012 | 22452483 |
| improved bioassay method for plant transformation inhibitors. | a convenient and quantitative bioassay method for evaluating the efficiency of plant transformation by agrobacterium tumefaciens is important to search plant transformation inhibitors, possible biochemical probes for study on its mechanism. our previously reported method, in which the plant transformation had been detected by the expression of β-glucuronidase in transformed plants, was improved. the difference between the previous and the improved methods is the use of suspension-cultured cells ... | 1998 | 27392395 |
| rare actinomycetes nocardia caishijiensis and pseudonocardia carboxydivorans as endophytes, their bioactivity and metabolites evaluation. | two strains identified as nocardia caishijiensis (sors 64b) and pseudonocardia carboxydivorans (agls 2) were isolated as endophytes from sonchus oleraceus and ageratum conyzoides respectively. the analysis of their extracts revealed them to be strongly bioactive. the n. caishijiensis extract gave an lc50 of 570 μg/ml(-1) in the brine shrimp cytotoxicity assay and an ec50 of 0.552 μg/ml(-1) in the dpph antioxidant assay. antimicrobial activity was observed against methicillin resistant staphlococ ... | 2016 | 26946375 |
| host range and genetic diversity of croton yellow vein mosaic virus, a weed-infecting monopartite begomovirus causing leaf curl disease in tomato. | croton yellow vein mosaic virus (cyvmv) is a widely occurring begomovirus in croton bonplandianum, a common weed in the indian subcontinent. in this study, cyvmv (genus begomovirus, family geminiviridae) was transmitted by whiteflies (bemisia tabaci) to as many as 35 plant species belonging to 11 families, including many vegetables, tobacco varieties, ornamentals and weeds. cyvmv produced bright yellow vein symptoms in croton, whereas in all the other host species, the virus produced leaf curl s ... | 2013 | 23096697 |
| anti-juvenile activity of azadirachta indica extract on the development and morphometry of filaria vector, culex quinquefasciatus (diptera: culicidae) say. | efficacy of extracts of ageratum conyzoides, argemone mexicana, and azadirachta indica were tested against culex quinquefasciatus larvae. petroleum ether extracts of a. conyzoides and a. mexicana with lc(50) values 425.60 and 267.90 ppm and 140.15 and 137.70 ppm after a period of 24 and 48 h, respectively, were found effective. however, the methanol extract of a. indica with lc(50) values 21.95 and 11.30 ppm after 24 and 48 h of exposure, respectively, was the most competent larvicide. the metha ... | 2009 | 19562375 |
| allelopathic effect of four weed species extracts on germination, growth and protein in different varieties of glycine max (l.) merrill. | allelopathic effect of ageratum conyzoides l., cynodon dactylon (l.) pers., parthenium hysterophorus l., and solanum nigrum l. were examined on seed germination, seedling growth, total protein content and protein profile on ankur, bhatt, bragg, pk -416, ps-1042 and shilajeet varieties of soybean (glycine max (l) merill). aqueous extracts of weeds (10% w/v) showed both inhibitory and stimulatory influence on percent seed germination and seedling growth in different varieties of soybean. on the ba ... | 2006 | 17402252 |
| a new chromene glucoside from ageratum conyzoides. | the aerial parts of ageratum conyzoides afforded a new chromene glucoside, 2,2-dimethylchromene 7- o-beta-glucopyranoside, together with a known benzofuran derivative. the structures were elucidated by high-field nmr spectroscopy. | 1999 | 17260251 |
| antibacterial activity and in vitro cytotoxicity of extracts and fractions of parkia biglobosa (jacq.) benth. stem bark and ageratum conyzoides linn. leaves. | many species of plants in african countries are widely used in the rural communities where there is little or no access to modern medicine. however, the safety and effectiveness of these medicinal plants are poorly evaluated. the stem bark of parkia biglobosa jacq. and leaves of ageratum conyzoides linn. were investigated for their antibacterial and cytotoxic activities. the plant materials were extracted with 95% ethanol, and fractionated with petroleum ether, chloroform and ethyl acetate. the ... | 2012 | 22797325 |
| cropping system diversification for food production in mindanao rubber plantations: a rice cultivar mixture and rice intercropped with mungbean. | including food production in non-food systems, such as rubber plantations and biofuel or bioenergy crops, may contribute to household food security. we evaluated the potential for planting rice, mungbean, rice cultivar mixtures, and rice intercropped with mungbean in young rubber plantations in experiments in the arakan valley of mindanao in the philippines. rice mixtures consisted of two- or three-row strips of cultivar dinorado, a cultivar with higher value but lower yield, and high-yielding c ... | 2017 | 28194318 |
| antinociceptive and anti-inflammatory activities of standardized extract of polymethoxyflavones from ageratum conyzoides. | ageratum conyzoides l. is a plant widely used in traditional medicine in tropical and subtropical regions of the world due to its anti-inflammatory, antinociceptive and antibacterial properties. | 2016 | 27633406 |
| beneficial effect of ageratum conyzoides linn (asteraceae) upon inflammatory response induced by carrageenan into the mice pleural cavity. | ageratum conyzoides linn (asteraceae), a tropical plant that is very common in west africa and some parts of asia and south america, has been used to treat inflammatory disorders. in brazil, teas made from a. conyzoides l. are used as anti-inflammatory, analgesic and anti-diarrheic agents. therefore, it is necessary to study the mechanism of anti-inflammatory action of a. conyzoides l. to support its medicinal use for treating inflammatory conditions. these studies will also support the developm ... | 2016 | 27596330 |
| acute sodium arsenite-induced hematological and biochemical changes in wistar rats: protective effects of ethanol extract of ageratum conyzoides. | ageratum conyzoides l. (asteraceae) is an annual herbaceous plant used in folklore medicine for the treatment of a wide range of diseases. | 2016 | 27114688 |
| large scale screening of ethnomedicinal plants for identification of potential antibacterial compounds. | the global burden of bacterial infections is very high and has been exacerbated by increasing resistance to multiple antibiotics. antibiotic resistance leads to failed treatment of infections, which can ultimately lead to death. to overcome antibiotic resistance, it is necessary to identify new antibacterial agents. in this study, a total of 662 plant extracts (diverse parts) from 222 plant species (82 families, 177 genera) were screened for antibacterial activity using the agar cup plate method ... | 2016 | 26985889 |
| chemo-profiling and bioassay of phytoextracts from ageratum conyzoides for acaricidal properties against rhipicephalus (boophilus) microplus (acari: ixodidae) infesting cattle and buffaloes in india. | in india, rhipicephalus (boophilus) microplus populations have developed a certain level of resistance to most of the acaricides marketed against tick species. to manage the problem, the present study was undertaken to evaluate the acaricidal potential of ageratum conyzoides plants against acaricides-resistant ticks infesting cattle and buffaloes. the regression analysis of dose-response data of ethanolic extract of a. conyzoides revealed lc90 value of 8.91% against reference susceptible ivri-1 ... | 2016 | 26723275 |
| plant utilization against digestive system disorder in southern assam, india. | being one of the most common types of life threatening diseases in southern assam, india, the digestive system disorders (dsd) have gained much attention in recent decades. traditional beliefs and inadequate income of mass population result in the use of alternative phytotherapies to treat the diseases. | 2015 | 26387738 |
| insecticidal activity of ageratum conyzoides l., coleus aromaticus benth. and hyptis suaveolens (l.) poit essential oils as fumigant against storage grain insect tribolium castaneum herbst. | essential oils (eos) from ageratum conyzoides l., coleus aromaticus benth. and hyptis suaveolens (l.) poit were extracted and tested against tribolium castaneum herbst, the storage grain insect. the eos were found effective against tribolium castaneum during in vitro as well as in vivo fumigant testing. the eos of h. suaveolens and a. conyzoides showed 100 % mortality of test insect at 250 ppm while c. aromaticus at 350 ppm. during in vivo fumigant testing of wheat samples against tribolium cast ... | 2014 | 25190885 |
| pyrrolizidine alkaloids from ageratum conyzoides. | | 1991 | 17226207 |
| essential oil of ageratum conyzoides. | the essential oil of ageratum conyzoides leaves was analysed by means of gc-ms and associated procedures. fifty-one constituents - 13 monoterpenoid hydrocarbons (5.0%), 7 oxygenated monoterpenoids (1.4%), 16 sesquiterpenoid hydrocarbons (4.3%), 4 oxygenated sesquiterpenoids (0.8%), 3 phenylpropanoids and benzenoids (2.33%), 6 chromenes (85.2%), and 2 chromans (0.9%) - were identified. only six of these components have been previously found in ageratum essential oil. the natural occurrence of the ... | 1988 | 17265205 |
| [flavonoid compounds of the ageratum conyzoides l. herb]. | | 1978 | 665280 |
| in vivo and in vitro toxicological evaluation of the hydroalcoholic leaf extract of ageratum conyzoides l. (asteraceae). | in african traditional medicine, ageratum conyzoides has been used as purgative, febrifuge, anti-ulcer and wound dressing. to date there is no safety information about long term use of ageratum conyzoides which contains pyrrolizidine alkaloids, a class of hepatotoxic and carcinogenic phytochemicals. this study aims to evaluate the 90 days subchronic toxicity and in vitro toxicity of ageratum conyzoides. | 2014 | 25048610 |
| ageratum enation virus-a begomovirus of weeds with the potential to infect crops. | samples of two ageratum conyzoides, one sonchus oleraceus and one turnip (brassica rapa var. rapa) exhibiting virus-like symptoms were collected from pakistan and nepal. full-length begomovirus clones were obtained from the four plant samples and betasatellite clones from three of these. the begomovirus sequences were shown to be isolates of ageratum enation virus (aev) with greater than 89.1% nucleotide sequence identity to the 26 aev sequences available in the databases. the three betasatellit ... | 2015 | 25674770 |
| molecular characterization and pathogenicity of a carrot (daucus carota) infecting begomovirus and associated betasatellite from india. | the yellow mosaic pattern and shortening of leaf petiole are common disease symptoms associated with begomovirus infection in carrot. dna from field infected carrot leaves was analyzed by rolling circle amplification and sequencing. the results established the presence of ageratum enation virus (aev), which is referred to here as ageratum enation virus-carrot (aev-car). symptomatic ageratum (ageratum conyzoides) plants, growing adjacent to the carrot fields, also showed the presence of aev (aev- ... | 2013 | 24512752 |
| biotechnological potential of endophytic actinomycetes associated with asteraceae plants: isolation, biodiversity and bioactivities. | endophytic actinomycetes from five asteraceae plants were isolated and evaluated for their bioactivities. from parthenium hysterophorus, ageratum conyzoides, sonchus oleraceus, sonchus asper and hieracium canadense, 42, 45, 90, 3, and 2 isolates, respectively, were obtained. of the isolates, 86 (47.2 %) showed antimicrobial activity. majority of the isolates were recovered from the roots (n = 127, 69.7 %). the dominant genus was streptomyces (n = 96, 52.7 %), while amycolatopsis, pseudonocardia, ... | 2014 | 24375232 |
| tri-trophic insecticidal effects of african plants against cabbage pests. | botanical insecticides are increasingly attracting research attention as they offer novel modes of action that may provide effective control of pests that have already developed resistance to conventional insecticides. they potentially offer cost-effective pest control to smallholder farmers in developing countries if highly active extracts can be prepared simply from readily available plants. field cage and open field experiments were conducted to evaluate the insecticidal potential of nine com ... | 2013 | 24205287 |
| antinociceptive and antioxidant potential of the crude ethanol extract of the leaves of ageratum conyzoides grown in bangladesh. | ageratum conyzoides linn. (asteraceae) is an annual herbaceous plant with a long history of traditional medicinal and agricultural uses; it is usually grown in the northeast part of bangladesh. | 2013 | 23577800 |
| effects of organic extracts of six bangladeshi plants on in vitro thrombolysis and cytotoxicity. | thrombus formed in blood vessels lead to atherothrombotic diseases such as myocardial or cerebral infarction. thrombolytic agents are used to dissolve the already formed clots in the blood vessels; however, these drugs sometimes cause serious and fatal consequences. herbal preparations have been used since ancient times for the treatment of several diseases although they show little toxicity in some cases. aqueous extracts of herbs used in thrombolysis have been reported before with cytotoxic da ... | 2013 | 23363538 |
| retraction notice to: “antibacterial activity and in vitro cytotoxicity of extracts and fractions of parkia biglobosa (jacq.) benth. stem bark and ageratum conyzoides linn. leaves” [environ. toxicol. pharmacol. 34 (2012) 478–483]. | | 2012 | 23346561 |
| a new chromene isolated from ageratum conyzoides. | from the ethanol extract of the whole plant of ageratum conyzoides l. (compositae), one new chromene, 2,2-dimethylchromene 7-methoxy-6-o-beta-d-glucopyranoside, was isolated, together with thirteen known compounds, seven of which were being reported for the first time. the compounds were all characterized by ms, ir, 1d- and 2d-nmr spectroscopy. 7,3',5'-tri-o-methyltricetin (7), precocene ii (9), 3,5,7,4'-tetrahydroxyflavone (13) and 5,6,7,3',4',5'-hexamethoxyflavone (14) exhibited inhibitory act ... | 2011 | 21941894 |
| the in vitro effects of aqueous and ethanolic extracts of the leaves of ageratum conyzoides (asteraceae) on three life cycle stages of the parasitic nematode heligmosomoides bakeri (nematoda: heligmosomatidae). | a comparative in vitro study was carried out to determine the ovicidal and larvicidal activity of aqueous and ethanolic extracts of ageratum conyzoides (asteraceae) leaves on the eggs (unembryonated and embryonated), first and second larval stages of heligmosomoides bakeri. four different concentrations (0.625, 1.25, 2.5, and 3.75 mg·ml(-1)) of both aqueous and ethanolic extracts were tested. distilled water and 5% tween were used as negative controls in the bioassay. in fact, they did not affec ... | 2011 | 21772960 |
| eco-physiological performance of two invasive weed congeners (ageratum conyzoides l. and ageratum houstonianum mill.) in the indo-gangetic plains of india. | morphological (easily measureable) and physiological (hard to measure) traits of two closely related invasive alien congeners-ageratum conyzoides l. and ageratum houstonianum mill. were studied with a perspective that which species will be potentially be more successful as an invader in the indo-gangetic plains of india. leaf construction cost (lcc) is considered as a quantifiable measure of energy demand for biomass production and is related to energy use efficiency as it include component of b ... | 2011 | 20848310 |