| activities of chromolaena odorata (compositae) leaf extract against pseudomonas aeruginosa and streptococcus faecalis. | | 1992 | 1453706 |
| an aqueous extract of the leaves of chromolaena odorata (formerly eupatorium odoratum) (eupolin) inhibits hydrated collagen lattice contraction by normal human dermal fibroblasts. | chromolaena odorata (formerly eupatorium odoratum) is used as a traditional medicine in vietnam (nghiem, 1992), where its vietnamese common name is "co hoi." while it has been widely considered a weed by agriculturalists (holm et al., 1991), the aqueous extract and the decoction from the leaves of this plant have been used throughout vietnam for the treatment of soft tissue wounds, burn wounds, and skin infections. a number of clinical studies done by vietnamese as well as foreign medical worker ... | 1996 | 9395667 |
| upregulation of adhesion complex proteins and fibronectin by human keratinocytes treated with an aqueous extract from the leaves of chromolaena odorata (eupolin). | the fresh leaves and extract of the plant chromolaena odorata are a traditional herbal treatment in developing countries for burns, soft tissue wounds and skin infections. we have previously shown that the extract had an effect on the growth and proliferation of keratinocytes and fibroblasts in culture. this study has demonstrated that eupolin extract increased expression of several components of the adhesion complex and fibronectin by human keratinocytes. using indirect immunofluorescence we fo ... | 2000 | 11056422 |
| effect of some ghanaian plant components on control of two stored-product insect pests of cereals. | in an attempt to find natural and cheaper methods for the control of stored-product pests of cereals, some traditionally useful ghanaian plant materials were evaluated. hexane+isopropyl alcohol extract of leaves of ocimum viride proved most effective in the control of tribolium castaneum (coleoptera: tenebrionidae) and sitophilus oryzae (coleoptera: curculionidae), followed by that of chromolaena odorata. o. viride showed strong repellent activity and thus deterred the insects from feeding. it r ... | 2000 | 11124372 |
| 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 |
| anti-oxidant effects of the extracts from the leaves of chromolaena odorata on human dermal fibroblasts and epidermal keratinocytes against hydrogen peroxide and hypoxanthine-xanthine oxidase induced damage. | in cutaneous tissue repair, oxidants and antioxidants play very important roles. in local acute and chronic wounds, oxidants are known to have the ability to cause as cell damage and may function as inhibitory factors to wound healing. the administration of anti-oxidants or free radical scavengers is reportedly helpful, notably in order to limit the delayed sequelae of thermal trauma and to enhance the healing process. extracts from the leaves of chromolaena odorata have been shown to be benefic ... | 2001 | 11348739 |
| effects of an aqueous extract from the leaves of chromolaena odorata (eupolin) on the proliferation of human keratinocytes and on their migration in an in vitro model of reepithelialization. | eupolin ointment, prepared from the leaves of chromolaena odorata, has been shown to promote the healing of soft tissue wounds and burns in vietnam. however, the mechanism by which this agent affects cells involved in the wound healing process is unknown. cultured human keratinocytes were used in this study to investigate the effects of the eupolin extract in vitro on processes involved in wound reepithelialization. keratinocyte proliferation was monitored by a colorimetric assay and migration b ... | 2001 | 11679139 |
| [chemical composition of volatile oil from chromolaena odorata and its effect on plant, fungi and insect growth]. | the volatile oil from c. odorata had a significant effect on the growth of plants, fungi and insects. the result showed that the seedling growth of five test plants was obviously inhibited, in the order of ryegrass > chinese cabbage > radish > snap been > rice. the inhibitory effect of the oil at its middle concentration (800 mg.l-1) for pyricularia grisea was the strongest, the next was to phytophthora nicotianae, and the weakest was to fusarium axysporum. the inhibitory percentage was 61.40%, ... | 2003 | 12924132 |
| antimycobacterial activity and cytotoxicity of flavonoids from the flowers of chromolaena odorata. | from the flowers of chromolaena odorata (eupatorium odoratum) four flavanones, isosakuranetin (5,7-dihydroxy-4'-methoxyflavanone) (1), persicogenin (5,3'-dihydroxy-7,4'-dimethoxyflavanone) (2), 5,6,7,4'-tetramethoxyflavanone (3) and 4'-hydroxy-5,6,7-trimethoxyflavanone (4), two chalcones, 2'-hydroxy-4,4',5',6'-tetramethoxychalcone (5) and 4,2'-dihydroxy-4',5',6'-trimethoxychalcone (6), and two flavones, acacetin (5,7-dihydroxy-4'-methoxyflavone) (7) and luteolin (5,7,3',4'-tetrahydroxyflavone) ( ... | 2004 | 15202555 |
| precision improvement for the analysis of flavonoids in selected thai plants by capillary zone electrophoresis. | a capillary zone electrophoresis (cze) method for the analyses of kaempferol in centella asiatica and rosa hybrids and rutin in chromolaena odorata was developed. the optimization was performed on analyses of flavonoids (e.g., rutin, kaempferol, quercetin, myricetin, and apigenin) and organic carboxylic acids (e.g., ethacrynic acid and xanthene-9-carboxylic acid) by investigation of the effects of types and amounts of organic modifiers, background electrolyte concentrations, temperature, and vol ... | 2005 | 15690438 |
| anti-inflammatory activity of aqueous leaf extract of chromolaena odorata. | the anti-inflammatory activity of the aqueous extract of chromolaena odorata was investigated in rats using the carrageenan-induced oedema, cotton pellet granuloma and formalin-induced oedema methods. the extract was administered orally at doses of 25, 50, 100 and 200 mg/kg. in the carrageenan method the paw oedema was significantly reduced by all the doses of the extract administered, with the 200 mg/kg dose producing the highest oedema inhibition (80.5%). in the cotton pellet method, granuloma ... | 2005 | 16280100 |
| antifungal activity of chromolaena odorata (l.) king & robinson(asteraceae) of cameroon. | an aqueous ethanol extract of leaves of chromolaena odorata and some of its fractions were examined for their antifungal properties by dilution methods on solid and liquid media, using yeasts and filamentous fungi. extract and fractions inhibit the in vitro growth of cryptococcus neoformans, microsporum gypseum, trichophyton mentagrophytes and trichophyton rubrum with a minimal inhibitory concentration range from 62.5 to 500 microg/ml for the extract and from 25 to 100 microg/ml for fractions. a ... | 2006 | 16567942 |
| constituents of the essential oil from aerial parts of chromolaena odorata from thailand. | the chemical composition of the essential oil from the aerial parts of chromolaena odorata, collected from phitsanulok, thailand was analyzed by means of gc-(fid) and gc-ms. twenty-two constituents were identified. the major components were pregeijerene (17.6%), germacrene d (11.1%), alpha-pinene (8.4%), beta-caryophyllene (7.3%), vestitenone (6.5%), beta-pinene (5.6%), delta-cadinene (4.9%), geijerene (3.1%), bulnesol (2.9%), and trans-ocimene (2.2%). | 2006 | 16835098 |
| a new flavonoid from chromolaena odorata. | fractionation of the aerial parts of chromolaena odorata afforded a new flavonoid, 5,7-dihydroxy-6,4'-dimethoxyflavanone, in addition to 14 known flavonoid compounds, six of which had not been isolated previously from this plant. the structure of the new compound was determined by spectroscopic methods particularly 2d-nmr analysis. | 2006 | 17127508 |
| uptake and accumulation of cadmium, lead and zinc by siam weed [chromolaena odorata (l.) king & robinson]. | the siam weed, chromolaena odorata (l.) king & robinson, family asteraceae, was found to be a new pb hyperaccumulator by means of field surveys on pb soil and hydroponic studies. plants from field collection accumulated 1377 and 4236mgkg(-1) pb in their shoots and roots, respectively, and could tolerate soil pb concentrations up to 100000 mgkg(-1) with a translocation factor of 7.62. very low concentrations of cd and zn were found in plants collected from the field. under nutrient solution cultu ... | 2007 | 17280700 |
| platelet-activating factor (paf) receptor binding antagonist activity of the methanol extracts and isolated flavonoids from chromolaena odorata (l.) king and robinson. | the leaf, stem and root extracts of chromolaena odorata were evaluated for their effect on platelet-activating factor (paf) receptor binding on rabbit platelets using 3h-paf as a ligand. the leaf extract demonstrated high paf receptor binding inhibitory activity of 79.2+/-2.1% at 18.2 microg/ml. a total of eleven flavonoids were subsequently isolated from the active leaf extract and evaluated for their effects on paf receptor binding. eight of the flavonoids exhibited >50% inhibition on the bind ... | 2007 | 17541171 |
| fusarium species from the cassava root rot complex in west africa. | abstract fusarium species are a significant component of the set of fungi associated with cassava root rot. yield losses due to root rot average 0.5 to 1 ton/ha but losses >3 ton/ha, an equivalent of 15 to 20% yield, often occur. this paper reviews previous work on cassava root rot and summarizes a few recent studies on fusarium species associated with the disease. our studies in cameroon showed that 30% of rotted tubers were infected by fusarium spp. 12 months after planting and represented 25% ... | 2006 | 18943189 |
| evaluation of antioxidant and free radical scavenging capacities of some nigerian indigenous medicinal plants. | methanolic extracts of 10 selected nigerian medicinal plants-psidium guajava, alstonia boonei, cassia alata, newbouldia laevis, spondias mombin, globimetula cupulatum, chromolaena odorata, securidaca longepedunculata, ocimum gratissimum, and morinda lucida-widely used in ethnomedicine, were assessed for phytochemical constituents and antioxidant and free radical scavenging activities using seven different antioxidant assay methods. phytochemical screening gave positive tests for steroids, terpen ... | 2010 | 20192848 |
| disease-reducing effect of chromolaena odorata extract on sheath blight and other rice diseases. | sheath blight caused by rhizoctonia solani (teleomorph: thanatephorus cucumeris) is a major cause of crop loss in intensive rice production systems. no economically viable control methods have been developed. we screened aqueous extracts of common herbal plants that could reduce sheath blight lesions and found that foliar spraying and seed soaking application of extracts of either fresh or dried leaves of chromolaena odorata gave up to 68% reduction in sheath blight lesion lengths under controll ... | 2011 | 20839964 |
| Effects of soil amendments and EDTA on lead uptake by Chromolaena odorata: greenhouse and field trial experiments. | Greenhouse and field trial experiments were performed to evaluate the use of Chromolaena odorata with various soil amendments for phytoextraction of Pb contaminated soil Pb mine soils contain low amount of nutrients, so the additions of organic (cow manure) and inorganic (Osmocote and NH4NO3 and KCl) fertilizers with EDTA were used to enhance plant growth and Pb accumulation. Greenhouse study showed that cow manure decreased available Pb concentrations and resulted in the highest Pb concentratio ... | 2011 | 21972512 |
| Anti-inflammatory effects of fatty acids isolated from Chromolaena odorata. | To identify inhibitors of nitric oxide production and NF-?B activity from Chromolaena odorata (C. odorata). | 2011 | 22014728 |
| chlorogenic acid content, essential oil compositions, and in vitro antioxidant activities of chromolaena odorata leaves. | chromolaena odorata (l.) r. m. king and h. rob. is a thai medicinal plant used for the treatment of wounds, rashes, diabetes, and insect repellent. the leaves of c. odorata were collected from 10 different sources throughout thailand. the chemical constituents of essential oils were hydro-distilled from the leaves and were analyzed by gas chromatography-mass spectrometry. chlorogenic acid contents were determined by thin-layer chromatography (tlc) - densitometry with wincats software and tlc ima ... | 2016 | 27144150 |
| ovicidal and oviposition deterrent activities of medicinal plant extracts against aedes aegypti l. and culex quinquefasciatus say mosquitoes (diptera: culicidae). | to evaluate the ovicidal and oviposition deterrent activities of five medicinal plant extracts namely aegle marmelos (linn.), limonia acidissima (linn.), sphaeranthus indicus (linn.), sphaeranthus amaranthoides (burm.f), and chromolaena odorata (linn.) against culex quinquefasciatus and aedes aegypti mosquitoes. three solvents, namely hexane, ethyl acetate, and methanol, were used for the preparation of extracts from each plant. | 2014 | 25737834 |
| phytoremediation of fuel oil and lead co-contaminated soil by chromolaena odorata in association with micrococcus luteus. | phytoremediation is widely promoted as a cost-effective technology for treating heavy metal and total petroleum hydrocarbon (tph) co-contaminated soil. this study investigated the concurrent removal of tphs and pb in co-contaminated soil (27,000 mg kg(-1) tphs, 780 mg kg(-1) pb) by growing siam weed (chromolaena odorata) in a pot experiment for 90 days. there were four treatments: co-contaminated soil; co-contaminated soil with c. odorata only; co-contaminated soil with c. odorata and micrococcu ... | 2016 | 27159380 |
| antimalarial actions of lawsonia inermis, tithonia diversifolia and chromolaena odorata in combination. | chromolaena odorata, tithonia diversifolia and lawsonia inermis are medicinal plants used in treating malaria in traditional medicine system. previous studies however showed that their dichloromethane, methanol (1:1) extracts were more active against plasmodium parasite than the aqueous extracts. | 2016 | 27321410 |
| antiplasmodial activity-aided isolation and identification of quercetin-4'-methyl ether in chromolaena odorata leaf fraction with high activity against chloroquine-resistant plasmodium falciparum. | the present study was undertaken to evaluate the antiplasmodial activity of chromolaena odorata leaf extract and gradient fractions through in vivo and in vitro tests, aimed at identifying its antiplasmodial constituents. sub-fractions obtained from the most active gradient fraction were further tested for cytotoxicity against thp-1 cells, chloroquine-sensitive (hb3) and chloroquine-resistant (fcm29) plasmodium falciparum. our results showed the dichloromethane gradient fraction was most effecti ... | 2014 | 25199554 |
| functional equivalence of an evolutionarily conserved rna binding module. | members of the tristetraprolin (ttp) family of proteins participate in the regulation of mrna turnover after initially binding to au-rich elements in target mrnas. related proteins from most groups of eukaryotes contain a conserved tandem zinc finger (tzf) domain consisting of two closely spaced, similar ccch zinc fingers that form the primary rna binding domain. there is considerable sequence variation within the tzf domains from different family members within a single organism and from differ ... | 2015 | 26292216 |
| isolation and characterization of microsatellite markers for a worldwide invasive weed, chromolaena odorata (asteraceae). | | 2011 | 21865503 |
| [effects of soil phosphorus level on morphological and photosynthetic characteristics of ageratina adenophora and chromolaena odorata]. | in this paper, a comparative study was made on the growth, morphology, biomass allocation, and photosynthesis of two invasive plant species ageratina adenophora and chromolaena odorata under five soil phosphorus levels, aimed to know how the test plant species acclimate to the changes of soil phosphorus level, evaluate which plant traits were associated with the invasiveness of the two species, and know whether the increased level of soil phosphorus could facilitate their invasion. the results s ... | 2006 | 16836086 |
| 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 |
| 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 |
| predicting incursion of plant invaders into kruger national park, south africa: the interplay of general drivers and species-specific factors. | overcoming boundaries is crucial for incursion of alien plant species and their successful naturalization and invasion within protected areas. previous work showed that in kruger national park, south africa, this process can be quantified and that factors determining the incursion of invasive species can be identified and predicted confidently. here we explore the similarity between determinants of incursions identified by the general model based on a multispecies assemblage, and those identifie ... | 2011 | 22194893 |
| analysis of traditional knowledge in medicinal plants used by yuan in thailand. | we studied traditional knowledge of medicinal plants use of the yuan in northern thailand, documenting and analysing traditional medical practices and its trend in the younger generations. | 2013 | 23850711 |
| screening of venezuelan medicinal plant extracts for cytostatic and cytotoxic activity against tumor cell lines. | there are estimated to be more than 20,000 species of plants in venezuela, of which more than 1500 are used for medicinal purposes by indigenous and local communities. only a relatively small proportion of these have been evaluated in terms of their potential as antitumor agents. in this study, we screened 308 extracts from 102 species for cytostatic and cytotoxic activity against a panel of six tumor cell lines using a 24-h sulphorhodamine b assay. extracts from clavija lancifolia, hamelia pate ... | 2013 | 22648665 |
| streptomyces cameroonensis sp. nov., a geldanamycin producer that promotes theobroma cacao growth. | the taxonomy of an actinobacterial strain, designated jjy4(t), was established using a polyphasic approach. jjy4(t) was isolated from the rhizosphere of chromolaena odorata in yaoundé (cameroon) during a project for the selection of biological control agents. strain jjy4(t) exhibited antimicrobial activities against bacteria, fungi, and oomycetes. strain jjy4(t) also exhibited the traits of plant growth-promoting rhizobacteria such as the solubilization of inorganic phosphate, production of side ... | 2017 | 28260703 |
| chromolaena odorata: a neglected weed with a wide spectrum of pharmacological activities (review). | the study of wound‑healing plants has acquired an interdisciplinary nature with a systematic investigational approach. several biochemicals are involved in the healing process of the body, including antioxidants and cytokines. although several pharmaceutical preparations and formulations are available for wound care and management, it remains necessary to search for efficacious treatments, as certain current formulations cause adverse effects or lack efficacy. phytochemicals or biomarkers from n ... | 2017 | 28112383 |
| reduced mobility but high survival: thermal tolerance and locomotor response of the specialist herbivore, pareuchaetes insulata (walker) (lepidoptera: erebidae), to low temperatures. | disentangling the responses of insects to variations in their thermal environment is central to our understanding of the evolution of temperature-dependent performance in these species. here, we report results of experiments examining the effects of high (upper lethal temperature = ult) and low (lower lethal temperature = llt) temperature and exposure time on the survival of larvae and adults of a multivoltine, nocturnal moth species, pareuchaetes insulata, a biological control agent whose impac ... | 2016 | 27974070 |
| synergy of siam weed (chromolaena odorata) and poultry manure for energy generation: effects of pretreatment methods, modeling and process optimization. | the co-digestion of chromolaena odorata with poultry manure was evaluated in this study. two samples of the weed: (a: which was pre-treated with mechanical, chemical and thermal methods) and (b: which was pretreated using mechanical and chemical methods only) were separately digested with poultry manure. biogas generation started from the 2nd to 4th and 4th to 7th day for samples 'a' and 'b' respectively. the most desired actual biogas yield from samples 'a' and 'b' were 3884.20 and 2544.70 (10( ... | 2017 | 27956328 |
| acetylcholinesterase inhibitory activity of stigmasterol & hexacosanol is responsible for larvicidal and repellent properties of chromolaena odorata. | chromolaena odorata, has been traditionally known for its insect repellent property. aim of this study was to determine larvicidal tendency of c. odorata on culex quinquefasciatus and isolate compounds responsible for this activity and to determine the mechanism of action of these compounds. | 2017 | 27916676 |
| eriophyoid mites from eastern india: description of three new species (acari: prostigmata: eriophyoidea). | three new eriophyoid mite species, namely dichopelmus puncti n. sp. (eriophyidae) from cogan grass, imperata cylindrica (poaceae); calacarus kalyaniensis n. sp. (eriophyidae) from siam weed, chromolaena odorata (asteraceae) and neorhynacus bidhanae n. sp. (diptilomiopidae) from croton caudatus (euphorbiaceae), are described and illustrated from west bengal, india. the new species are vagrants on the leaves of their respective host plants with no visible damage observed. keys to the known species ... | 2016 | 27395518 |
| natural remedies used by bunong people in mondulkiri province (northeast cambodia) with special reference to the treatment of 11 most common ailments. | in this paper we present a comprehensive ethnomedicinal study conducted in mondulkiri province. traditional knowledge about natural medicine (plants, animals, mushrooms) was investigated in cambodia's largest indigenous community: the bunong people. the survey aims to document the medicinal plant use of this ethnic, by focusing on the eleven most frequent diseases encountered in the area, in order to highlight species that could be recommended in public health programs. | 2016 | 27282662 |
| antioxidant and immunomodulatory properties of polysaccharides from allanblackia floribunda oliv stem bark and chromolaena odorata (l.) king and h.e. robins leaves. | many plant polysaccharides have shown high antioxidant and immunostimulating properties and can be explored as novel molecules with biological properties that can potentially improve immune function. the objective of this work was to characterize soluble and cell wall polysaccharides isolated from the stem bark of allanblackia floribunda and chromolaena odorata leaves and to evaluate their antioxidant and immunomodulatory properties. | 2015 | 26651330 |
| a new flavanone from the leaves of chromolaena odorata. | chromolaena odorata (syn: eupatorium odoratum) is a perennial plant belonging to the asteraceae family. extracts of c. odorata have shown strong anti-oxidant and moderate anti-adipogenenesis activities. detailed phytochemical investigation of c. odorata led to the isolation of 21 secondary metabolites, which include a new flavanone (3), and a chalcone, 3,2'-dihydroxy-4,4',5',6'-tetramethoxychalcone (2), reported for the first time from a natural source, besides three known compounds 1, 4 and 5, ... | 2015 | 26594758 |
| acute and cytotoxicity studies of aqueous and ethanolic leaf extracts of chromolaena odorata. | chromolaena odorata, a commonly used traditional remedy for different ailments, believed to be quite safe in terms of toxicity was evaluated for acute toxicity and cytotoxic potentials. acute toxicity was done on albino wistar rats using the lorke method while brine shrimps were used to test for cytotoxicity. the results showed that the estimated ld50 for the aqueous and ethanolic extracts was 2154 and > 5000 mg kg(-1) body weight, respectively. cytotoxicity to brine shrimps showed lc50 values o ... | 2015 | 26353417 |
| possible anti-diarrhoeal potential of ethanol leaf extract of chromolaena odorata in castor oil-induced rats. | chromolaena odorata is a plant commonly used traditionally to treat ailments including diarrhoea in nigeria. | 2015 | 26259231 |
| structural changes in response to bioaccumulation of iron and mercury in chromolaena odorata (l.) king & robins. | a comparative study was designed to elucidate the effect of iron and mercury on the morphological and anatomical changes as well as bioaccumulation potential in chromolaena odorata. plants were grown in half-strength hoagland nutrient medium artificially contaminated with known quantities of hgcl2 (15 μm) and fecl3 (1000 μm). bioaccumulation of hg and fe was maximum in the root, and comparatively reduced bioaccumulation was recorded in the stem and leaves. microscopic studies on morphology and a ... | 2015 | 26239568 |
| chromolaena odorata (l.) r.m. king & h. rob. (asteraceae) in sub-saharan africa: a synthesis and review of its medicinal potential. | chromolaena odorata (l.) r.m. king & h. rob. (asteraceae) is a scrambling perennial shrub that originated in the americas, but is now common in sub-saharan africa, asia and oceania, where it has become a serious weed. the species, particularly the biotype found in asia and west africa, has many ethnopharmacological uses, including treatment of malaria, wounds, diarrhoea, skin infection, toothache, dysentery, stomach ache, sore throat, convulsions, piles, coughs and colds. furthermore, no attempt ... | 2016 | 25975513 |
| screening of vietnamese medicinal plants for nf-κb signaling inhibitors: assessing the activity of flavonoids from the stem bark of oroxylum indicum. | seventeen plants used in vietnamese traditional medicine for the treatment of inflammatory disorders were screened for nf-κb inhibitory activity. oroxylum indicum, which exhibited activity, was investigated in detail. | 2015 | 25456439 |
| a field-scale study of cadmium phytoremediation in a contaminated agricultural soil at mae sot district, tak province, thailand: (1) determination of cd-hyperaccumulating plants. | the cadmium (cd) phytoremediation capabilities of gynura pseudochina, chromolaena odorata, conyza sumatrensis, crassocephalum crepidioides and nicotiana tabacum were determined by conducting in-situ experiments in a highly cd-contaminated agricultural field at mae sot district, tak province, thailand. most of these five plant species, which are commonly found in thailand, previously demonstrated cd-hyperaccumulating capacities under greenhouse conditions. this study represented an important init ... | 2015 | 25454203 |
| integrating novel chemical weapons and evolutionarily increased competitive ability in success of a tropical invader. | the evolution of increased competitive ability (eica) hypothesis and the novel weapons hypothesis (nwh) are two non-mutually exclusive mechanisms for exotic plant invasions, but few studies have simultaneously tested these hypotheses. here we aimed to integrate them in the context of chromolaena odorata invasion. we conducted two common garden experiments in order to test the eica hypothesis, and two laboratory experiments in order to test the nwh. in common conditions, c. odorata plants from th ... | 2015 | 25367824 |
| identification of chromomoric acid c-i as an nrf2 activator in chromolaena odorata. | activation of nuclear factor-erythroid 2-related factor 2 (nrf2) contributes to several beneficial bioactivities of natural products, including induction of an increased cellular stress resistance and prevention or resolution of inflammation. in this study, the potential of a crude leaf extract of chromolaena odorata, traditionally used against inflammation and skin lesions, was examined for nrf2 activation. guided by an nrf2-dependent luciferase reporter gene assay, the phytoprostane chromomori ... | 2014 | 24476568 |
| evolutionary increases in defense during a biological invasion. | invasive plants generally escape from specialist herbivores of their native ranges but may experience serious damage from generalists. as a result, invasive plants may evolve increased resistance to generalists and tolerance to damage. to test these hypotheses, we carried out a common garden experiment comparing 15 invasive populations with 13 native populations of chromolaena odorata, including putative source populations identified with molecular methods and binary choice feeding experiments u ... | 2014 | 24326694 |
| long-term environmental correlates of invasion by lantana camara (verbenaceae) in a seasonally dry tropical forest. | invasive species, local plant communities and invaded ecosystems change over space and time. quantifying this change may lead to a better understanding of the ecology and the effective management of invasive species. we used data on density of the highly invasive shrub lantana camara (lantana) for the period 1990-2008 from a 50 ha permanent plot in a seasonally dry tropical forest of mudumalai in southern india. we used a cumulative link mixed-effects regression approach to model the transition ... | 2013 | 24167555 |
| hemostatic and wound healing properties of chromolaena odorata leaf extract. | chromolaena odorata (l.) king and robinson (siam weed) extract has been used to stop bleeding and in wound healing in many tropical countries. however, its detailed mechanisms have not been elucidated. in this study, we examined the molecular mechanisms by which siam weed extract (swe) affected hemostatic and wound healing activities. swe promoted balb/c 3t3 fibroblast cell migration and proliferation. subsequently, we found that heme oxygenase-1 (ho-1), the accelerating wound healing enzyme, wa ... | 2013 | 23984087 |
| differences in competitive ability between plants from nonnative and native populations of a tropical invader relates to adaptive responses in abiotic and biotic environments. | the evolution of competitive ability of invasive plant species is generally studied in the context of adaptive responses to novel biotic environments (enemy release) in introduced ranges. however, invasive plants may also respond to novel abiotic environments. here we studied differences in competitive ability between chromolaena odorata plants of populations from nonnative versus native ranges, considering biogeographical differences in both biotic and abiotic environments. an intraspecific com ... | 2013 | 23977140 |
| invasion success in a marginal habitat: an experimental test of competitive ability and drought tolerance in chromolaena odorata. | climatic niche models based on native-range climatic data accurately predict invasive-range distributions in the majority of species. however, these models often do not account for ecological and evolutionary processes, which limit the ability to predict future range expansion. this might be particularly problematic in the case of invaders that occupy environments that would be considered marginal relative to the climatic niche in the native range of the species. here, we assess the potential fo ... | 2013 | 23936301 |
| effect of siam weed extract and its bioactive component scutellarein tetramethyl ether on anti-inflammatory activity through nf-κb pathway. | siam weed (chromolaena odorata (l.) king and robinson) is a medicinal herb used for wound healing and inflammation-related diseases. | 2013 | 23535395 |
| the evolution of increased competitive ability, innate competitive advantages, and novel biochemical weapons act in concert for a tropical invader. | there are many non-mutually exclusive mechanisms for exotic invasions but few studies have concurrently tested more than one hypothesis for the same species. here, we tested the evolution of increased competitive ability (eica) hypothesis in two common garden experiments in which chromolaena odorata plants originating from native and nonnative ranges were grown in competition with natives from each range, and the novel weapons hypothesis in laboratory experiments with leachates from c. odorata. ... | 2013 | 23252450 |
| pparγ agonist from chromolaena odorata. | a phytochemical investigation of chromolaena odorata resulted in the isolation of five new compounds, 5aα,6,9,9aβ,10-pentahydro-10β-hydroxy-7-methylanthra[1,2-d][1,3]dioxol-5-one (1), 1,2-methylenedioxy-6-methylanthraquinone (2), 3-hydroxy-1,2,4-trimethoxy-6-methylanthraquinone (3), 3-hydroxy-1,2-dimethoxy-6-methylanthraquinone (4), and 7-methoxy-7-epi-medioresinol (5), together with 12 known compounds, odoratin (6), 3β-acetyloleanolic acid (7), ursolic acid (8), ombuin (9), 4,2'-dihydroxy-4',5' ... | 2012 | 23186307 |
| anti-diabetic and anti-cataract effects of chromolaena odorata linn., in streptozotocin-induced diabetic rats. | chromolaena odorata linn., is used in traditional indian medicine in the treatment of diabetes and eye problems. | 2013 | 23183085 |
| effects of season, browse species and polyethylene glycol addition on gas production kinetics of forages in the subhumid subtropical savannah, south africa. | this study was conducted to investigate the effects of season, species and polyethylene glycol addition on gas production (gp) and gp kinetic parameters by in vitro incubation (72 h) of five plant species from the subhumid subtropical savannah, south africa. plant species used were acacia natalitia, acacia nilotica, dichrostachys cinerea, scutia myrtina and chromolaena odorata, leaves of which were harvested during the dry (june/july), early wet (november/december) and late wet (february/march) ... | 2013 | 23015416 |
| weed host specificity of the aphid, aphis spiraecola: developmental and reproductive performance of aphids in relation to plant growth and leaf chemicals of the siam weed, chromolaena odorata. | density, distribution, and nutritional quality of plants are the causal basis of host plant selection in aphids. nutritional qualities of a plant vary according to its growth stage and also in response to seasonal variation. how host plant growth stages shape aphid performance was studied in aphis spiraecola patch (homoptera: aphididae) on the perennial siam weed, chromolaena odorata (l.) king and robinson (asterales: asteraceae). this plant species is the preferred host in the hot and humid tro ... | 2012 | 22950746 |
| phytochemicals isolated from leaves of chromolaena odorata: impact on viability and clonogenicity of cancer cell lines. | the leaves of chromolaena odorata (asteraceae) are exploited extensively in west and central african ethnopharmacy for the treatment of a wide range of conditions, despite this being a non-native species established in the last 50 years. with the objective of seeking bioactive principles, the nonvolatile compounds, an ethanolic (80% v/v) extract was made and fractionated. from the hexane-soluble fraction, three compounds were isolated. two of these, 5-hydroxy-7,4'-dimethoxyflavanone and 2'-hydro ... | 2013 | 22899281 |
| in vivo and in vitro hemostatic activity of chromolaena odorata leaf extract. | chromolaena odorata (l.) r.m.king & h.rob. (asteraceae) or siam weed has long been used to stop bleeding in thailand and many countries. only the aqueous leaf extract was investigated in in vivo and there have been conflicting results of in vitro hemostatic mechanisms of this plant. | 2012 | 22881138 |
| effect of a 60-day oral gavage of a crude alkaloid extract from chromolaena odorata leaves on hormonal and spermatogenic indices of male rats. | the present study was aimed at investigating the effects of the crude alkaloids isolated from chromolaena odorata leaves on the hormonal and spermatogenic indices of male rats. the alkaloids obtained from c odorata leaves using standard methods were administered to male rats for 60 days at the doses of 250, 500, and 1000 mg/kg body weight. thin-layer chromatographic analysis of the alkaloid mixture produced 8 spots, 3 of which were alkaloids with r(f) values of 0.41, 0.49, and 0.55 as confirmed ... | 2012 | 22653963 |
| [control effects of mowing in combining with planting tree species on chromolaena odorata in karst region of guangxi, china]. | a field experiment was conducted in 2006-2008 to evaluate the control effects of three mowing frequencies in combining with planting three tree species with three densities on the chromolaena odorata in southwestern karst region of guangxi. in all treatments, the relative coverage, height, density, and aboveground biomass of c. odorata were decreased by 89.7%-99.3%, 41.6% - 81.2%, 61.4% - 83.2% and 91.7% - 97.8%, respectively, and the capitulum number was significantly lesser than that in the co ... | 2011 | 22007477 |
| the potential of chromolaena odorata (l) to decontaminate used engine oil impacted soil under greenhouse conditions. | this study reports on the use of chromolaena odorata (l) r.m. king and h. robinson, an asteraceae (compositae) and an invasive alien weed in africa for the remediation of soil contaminated with used engine oil. used engine oilfrom a motor service garage was used to artificially contaminate soil taken from a garden to give total petroleum hydrocarbon (tph) of between 1 and 40 g kg(-1). chromolaena odorata (l), propagated by stem cuttings were transplanted into the contaminated soil and watered ju ... | 2011 | 21972491 |
| flavonoid glycosides from chromolaena odorata leaves and their in vitro cytotoxic activity. | two new flavonoid glycosides, (1, 2), and eleven known compounds, (3-13), were isolated from from a 70% etoh extract of the leaves of chromolaena odorata (asteraceae). their structures were elucidated by 1d and 2d nmr spectroscopic interpretation as well as by chemical studies. the newly isolated compounds were tested in vitro for their cytotoxic activities against the llc and hl-60 cancer cell lines. compound 1 showed cytotoxicity against llc and hl-60 cancer cell lines with ic(50) values of 28 ... | 2011 | 21212562 |
| pretreatment of siam weed stem by several chemical methods for increasing the enzymatic digestibility. | siam weed [chromolaena odorata (l.) king & robinson], an invasive exotic weed in china, was proposed as a feedstock for bioethanol production. this would be a promising way of using for an invasive weed that needs management and control. it was found that the glucan content of the weed stem was similar to that of sugarcane bagasse, but higher than those of corn stover and wheat straw. several chemical pretreatment methods were applied to the weed stem to increase its enzymatic digestibility. mil ... | 2010 | 20349449 |
| bio-control potential of cladosporium sp. (mcpl-461), against a noxious weed parthenium hysterophorus l. | the phenological survey of parthenium hysterophorus l., in and around the campus of banaras hindu university (bhu) was done for about two years (2004-06). during nov 2004, a few parthenium plants were found diseased, and symptoms were restricted to the flowers, buds, and inflorescences. the disease causes sterility and reduces seed viability, which was observed with seed germination test from infected and healthy plants. the fungal pathogen was isolated and identified as cladosporium sp. (mcpl-4 ... | 2009 | 20121037 |
| evaluation of anti-oxidant activities and total phenolic content of chromolaena odorata. | the aim of this study was to assess the in vitro potential of chloroform extract of chromolaena odorata leaves. the dpph activity of the extract (0.1-5 mg/ml) was increased in a dose dependent manner, which was found in the range of 23.48-91.61% as compared to ascorbic acid (33.69-94.10%). the ic50 values of chloroform extract in dpph radical, hydroxyl radical, nitric oxide, abts radical were obtained to be 0.31, 0.43, 0.28 and 1.32 mg/ml, respectively. however, the ic50 values for the standard ... | 2010 | 20026159 |
| a peroxisome proliferator-activated receptor-gamma agonist and other constituents from chromolaena odorata. | peroxisome proliferator-activated receptors (ppars) are key regulators of lipid and glucose metabolism and have become important therapeutic targets for various diseases. the phytochemical investigation of the chloroform-soluble extract of chromolaena odorata led to the isolation of a ppar-gamma agonist, (9 s,13 r)-12-oxo-phytodienoic acid (1), together with 12 other compounds. the structures of chromomoric acid g (2), a new dehydrogenated derivative of 1, and chromolanone (3) were elucidated ba ... | 2009 | 19242902 |
| structural and physiological responses of two invasive weeds, mikania micrantha and chromolaena odorata, to contrasting light and soil water conditions. | to better understand the requirement of light and soil water conditions in the invasion sites of two invasive weeds, mikania micrantha and chromolaena odorata, we investigated their structural and physiological traits in response to nine combined treatments of light [full, medium and low irradiance (li)] and soil water (full, medium and low field water content) conditions in three glasshouses. under the same light conditions, most variables for both species did not vary significantly among diffe ... | 2009 | 19030958 |
| potential of chromolaena odorata for phytoremediation of (137)cs from solution and low level nuclear waste. | potential of chromolaena odorata plants for remediation of (137)cs from solutions and low level nuclear waste was evaluated. when plants were exposed to solutions spiked with three different levels of (137)cs, namely 1 x 10(3) kbql(-1), 5 x 10(3) kbql(-1) and 10 x 10(3) kbql(-1), 89%, 81% and 51% of (137)cs was found to be remediated in 15 d, respectively. at the lowest cs activity (1 x 10(3) kbql(-1)), accumulation of cs was found to be higher in roots compared to shoots, while at higher cs act ... | 2009 | 18599208 |
| comparative larvicidal property of leaf extract of chromolaena odorata l (composidae) and chlopyrifos (organophosphorus compound) on simulium larvae. | to assess the phytochemical properties of chromoleana odorata in the control of blackflies to help check the problem of environmental pollution from the use of chemical insecticides. | 2007 | 17948766 |
| suitability of pueraria phaseoloides, chromolaena odorata and tithonia diversifolia as in-situ mulch for nematode management in musa cropping systems. | mulching with plant organic matter has been shown to reduce nematode population densities in various cropping systems. the level of nematode control is increased when such mulches are incorporated into the soil as organic amendments. chromolaena odorata, tithonia diversifolia and pueraria phaseoloides are common cover crops in west and central africa that produce large quantities of nutrient rich biomass. the aim of this study was to determine, if in-situ mulching of c. odorata, t. diversifolia ... | 2006 | 17390809 |
| isolation of mercury-binding peptides in vegetative parts of chromolaena odorata. | mercury-binding peptides from roots, stems, and leaves of hg-treated chromolaena odorata plants were isolated and partially characterized using rp-hplc and esi-ms. upon exposure of c. odorata plants to high concentrations of 1.0 and 2.0 microm hg(no3)2 treatments from 0-28 days, they accumulated as much as 125 mg/g (dry wt) hg in the roots, 15.280 mg/g (dry wt) hg in the stems, and 0.800 mg/g (dry wt) hg in the leaves indicating that c. odorata has a high potential as a phytoremediation agent of ... | 2013 | 15948592 |
| effect of food plants on the volume of repellent secretion obtained in adult zonocerus variegatus (orthoptera: pyrgomorphidae). | the volume of secretion obtained from adult zonocerus variegatus (orthoptera: pyrgomorphidae) was influenced by the type of food plants. insects fed on leaves of cassava manihot esculenta, bitter leaves vernonia amygdalina, and a mixture of m. esculenta and acalypha wilkesiana gave a good volume of secretion while chromolaena odorata, elaeis guinensis, aspilia africana and citrus sinensis did not favour secretion production. no significant difference was recorded in the volume of secretion obtai ... | 2001 | 11935920 |
| the attraction of zonocerus variegatus (orthoptera: pyrgomorphidae) to different types of lure. | zonocerus variegatus is a common grasshopper in parts of west and equtorial africa. the distribution in nigeria extends from the lowland rainforest zone to the savannah in the north. the influence of lure on the behaviour of grasshopper inside cages (120 insect per cage) was investigated. nymphs and adults of zonocerus variegatus responded positively to intact leaves, crushed leaves and inflorescence of the common compositae weed chromolaena odorata inside muslin bags, and intact plants. there w ... | 2001 | 11935919 |
| phenolic compounds of chromolaena odorata protect cultured skin cells from oxidative damage: implication for cutaneous wound healing. | extracts from the leaves of chromolaena odorata have been shown to be beneficial for treatment of wounds. the crude ethanol extract of the plant had been demonstrated to be a powerful antioxidant to protect fibroblasts and keratinocytes in vitro. in this study, the most active compounds were fractionated and identified from the crude extract using liquid chromatography coupled with uv spectroscopy and mass spectrometry. the antioxidant effects of purified fractions on cultured fibroblasts and ke ... | 2001 | 11767105 |
| some aspects of the biology and control using botanicals of the rice moth, corcyra cephalonica (stainton), on some pulses. | the life cycle of corcyra cephalonica was studied under ambient laboratory conditions (temperature range 27.5-30 degrees c and 60-73% r.h.) on groundnut, bambara groundnut and cowpea. the mean developmental period ranged from 33.2+/-0.2 to 45.3+/-1.8 days on whole, broken and powdered forms of the food media. egg hatchability was found to be 83%, while adult longevity ranged from 1.5+/-0.5 to 11.9+/-1.3 days for males and 1.5+/-0.5 to 16.5+/-1.2 days for females. sex ratio (male symbol:female sy ... | 2000 | 10758262 |
| enhanced proliferation of fibroblasts and endothelial cells treated with an extract of the leaves of chromolaena odorata (eupolin), an herbal remedy for treating wounds. | burns are a major problem in many developing countries. eupolin ointment is a topical agent used in the treatment of soft-tissue wounds and burns in vietnam and is made from an aqueous extract of the leaves of chromolaena odorata (formerly eupatorium odoratum). clinical studies using this extract have shown antimicrobial and anticoagulation effects as well as the promotion of tissue remodeling in the wound healing process. however, the mechanism by which this agent affects cells involved in the ... | 1998 | 9500394 |
| constituents of the essential oil from the flowers of chromolaena odorata. | | 1993 | 17235977 |