| saponins of the ivy plant, hedera helix, and their leishmanicidic activity. | antileishmanial activity is reported for the first time for saponins of ivy, hedera helix l., in vitro on promastigote and amastigote forms of leishmania infantum and leishmania tropica. the compounds tested were an extract containing 60% of saponic complex (cs 60), the bidesmosides hederasaponin b, c, and d (saponin k10), their corresponding monodesmosides alpha-, beta-, and delta-hederin, and hederagenin. cs 60 and bidesmosides have shown no effect. monodesmosides were found to be as effective ... | 1991 | 1896525 |
| antimutagenic activity of some saponins isolated from calendula officinalis l., c. arvensis l. and hedera helix l. | thirteen saponins were isolated and identified from calendula officinalis, c. arvensis and hedera helix. mutagenic and antimutagenic activities of these products were investigated using a modified liquid incubation technique of the salmonella/microsomal assay. the salmonella tester strain ta98 +/- s9 mix was used. screening of the antimutagenic activity was performed with a known promutagen: benzo-[a]pyrene (bap) and a mutagenic urine concentrate from a smoker (su). antimutagenic activities were ... | 1990 | 2204784 |
| human maximization test of falcarinol, the principal contact allergen of english ivy and algerian ivy (hedera helix, h. canariensis). | in a human maximization test of 5% falcarinol isolated from hedera helix, 10 of 20 subjects were sensitized. no subjects gave irritant reactions to 5%, 10 became sensitive to 1%, and 7 to 0.05%, with 3 of these giving 3+ to 4+ bullous reactions. | 1988 | 3180778 |
| allergic and irritant contact dermatitis from falcarinol and didehydrofalcarinol in common ivy (hedera helix l.). | experimental and chemical investigations revealed that common ivy (hedera helix susp. helix) contains 3 compounds which are powerful irritants and moderate sensitizers. only 2 of these constituents, falcarinol and didehydrofalcarinol, are present in the plant during the whole year. besides panax ginseng and schefflera arboricola, this is the third species of the araliaceae in which these polyacetylenic sensitizers have been found. falcarinol and didehydrofalcarinol also occur in hedera helix sub ... | 1987 | 3652685 |
| compositae dermatitis in childhood. | compositae dermatitis occurred in a 9-year-old boy with a strong personal and family history of atopy. positive patch test reactions were 2+ for dandelion (taraxacum officinale), false ragweed (ambrosia acanthicarpa), giant ragweed (ambrosia trifida), short ragweed (ambrosia artemisifolia), sagebrush (artemisia tridentata), wild feverfew (parthenium hysterophorus), yarrow (achillea millifolium), and tansy (tanacetum vulgare) and 1+ for dahlia species and english ivy (hedera helix). patch tests w ... | 1987 | 3827282 |
| extracts of the ivy plant, hedera helix, and their anthelminthic activity on liver flukes. | | 1985 | 4034744 |
| [hedera helix products in the prevention and therapy of irritant gas intoxications]. | | 1972 | 5049466 |
| heterokaryosis in fusarium tricinctum and f. sporotrichioides. | heterokaryons were formed in intra- and interspecific crosses between fusarium sporotrichioides and f. tricinctum auxotrophs. segregant homokaryons were evaluated for trichothecene toxin production in culture. results were consistent with nuclear control of toxin synthesis. the sexual compatibility of auxotrophs and 30 additional f. tricinctum sensu snyder & hansen strains was tested. perithecial production was restricted to crosses between florida isolates pathogenic to english ivy (hedera heli ... | 1983 | 6581272 |
| effects of alpha-hederin, a saponin extracted from hedera helix, on cells cultured in vitro. | in this work, we have analysed the effects of alpha-hederin, a monodesmosidic triterpenoid saponin isolated from hedera helix, on mouse b16 melanoma cells and non-cancer mouse 3t3 fibroblasts cultured in vitro. our results indicate that, in a serum-free medium, alpha-hederin is cytotoxic and inhibits proliferation in both cell lines at rather low concentrations (< 5 micrograms/ml) after only 8 hours of treatment. its cytotoxicity decreases in the presence of serum in which bsa seems to be able t ... | 1994 | 8134416 |
| anti-elastase and anti-hyaluronidase activities of saponins and sapogenins from hedera helix, aesculus hippocastanum, and ruscus aculeatus: factors contributing to their efficacy in the treatment of venous insufficiency. | triterpene and steroid saponins and sapogenins of medicinal plants (aesculus hippocastanum l., hedera helix l., ruscus aculeatus l.) are claimed to be effective for the treatment/prevention of venous insufficiency. in this work we evaluated the inhibitory effects of these plant constituents on the activity of elastase and hyaluronidase, the enzyme systems involved in the turnover of the main components of the perivascular amorphous substance. the results evidence that for hedera helix l., the sa ... | 1995 | 8554461 |
| protective effects of alpha-hederin, chlorophyllin and ascorbic acid towards the induction of micronuclei by doxorubicin in cultured human lymphocytes. | the influence of alpha-hederin (a saponin isolated from hedera helix), chlorophyllin, the sodium-copper salt of chlorophyll, and ascorbic acid (vitamin c) on the direct clastogenicity of doxorubicin (adriamycin) was investigated in vitro in human lymphocytes for the induction of micronuclei. in order to determine a possible mechanism of action responsible for the antimutagenic activity, treatments were performed for the three substances at different times of the culture (pre-treatment, simultane ... | 1996 | 8671733 |
| in vitro antispasmodic compounds of the dry extract obtained from hedera helix. | commercial dry extract of hedera helix l. is used for the treatment of disorders of the respiratory tract; it is standardized towards papaverine (papaverine equivalent value, pe, activity of 1 g test substance equivalent to the activity of x mg papaverine) by in vitro antispasmodic activity on isolated guinea-pig ileum with acetylcholine as spasmogen. in order to determine the phytochemical basis for the antispasmodic activity, bioassay guided fractionation and subsequent isolation of phenolic c ... | 1997 | 9140224 |
| isolation and immunoaffinity purification of biologically active plant natriuretic peptide. | it has recently been demonstrated that antibodies against atrial natriuretic peptides (anp) recognise analogues in plants and that rat anp binds specifically to isolated plant membranes and promotes stomatal guard cell opening in a concentration dependent manner. here we report the isolation and immunoaffinity purification of plant natriuretic peptide (pnp) from ivy (hedera helix) with rabbit anti-alpha-anp (1-28) (human, canine) antiserum. we also demonstrate that immunoaffinity purified plant ... | 1997 | 9207228 |
| visualization of the cytoskeleton within the secondary vascular system of hardwood species. | a single fixation technique has been devised to demonstrate localization of alpha-tubulin (for microtubules) and f-actin (for microfilaments) within the secondary vascular system of hardwood trees by indirect immunofluorescence microscopy using butyl-methylmethacrylate-embedded material. application of this technique to problems of cytomorphogenesis during secondary growth and its versatility are demonstrated with the hardwood species aesculus hippocastanum l., salix viminalis l., s. burjatica n ... | 1997 | 9316269 |
| study of the action of alpha-hederin on the ultrastructure of candida albicans. | alpha-hederin, a saponin isolated from hedera helix (l.) (araliaceae), was tested on candida albicans ultrastructure. the concentrations used were 6.25, 12.5, and 25 micrograms ml-1 for an exposure time of 24 h. transmission electron microscopy observations indicated that compared with untreated control yeasts, alpha-hederin induced modifications of cellular contents and alterations of cell envelope with degradation and death of the yeasts. the impact of alpha-hederin on the biomembranes and in ... | 1998 | 9916465 |
| the allergens of dendropanax trifidus makino and fatsia japonica decne. et planch. and evaluation of cross-reactions with other plants of the araliaceae family. | cis-9,17-octadecadiene-12,14-diyne-1,16-diol (i), an analog of falcarinol has been identified in our previous report as an active component of dendropanax trifidus and a strong sensitizer. in this report, 16-hydroxy-cis-9,17-octadecadiene-12,14-diynoic acid (ii) and cis-9,trans-16-octadecadiene-12,14-diynoic acid (iii) were elucidated as 2 other active components of the plant. compound i, however, presented with the highest concentration and showed a stronger reaction on patch testing. the leave ... | 1999 | 10208509 |
| triterpene saponins from the fruits of hedera helix. | six triterpene saponins, including two new compounds, were isolated from the fruits of hedera helix l. (araliaceae). the structures of the new compounds, named helixosides a and b, were established as 3-o-beta-d-glucopyranosyl-(1-->2)-beta-d-glucopyranosyl hederagenin 28-o-beta-d-glucopyranosyl-(1-->6)-beta-d-glucopyranosyl ester, and 3-o-beta-d-glucopyranosyl-(1-->2)-beta-d-glucopyranosyl oleanolic acid 28-o-beta-d-glucopyranosyl-(1-->6)-beta-d-glucopyranosyl ester, respectively, on the basis o ... | 2000 | 10820801 |
| plant-microbe interactions: wetting of ivy (hedera helix l.) leaf surfaces in relation to colonization by epiphytic microorganisms. | leaf wettability, cuticular wax composition, and microbial colonization of upper and lower leaf surfaces of ivy (hedera helix l.) was investigated for young and old leaves sampled in june and september. contact angles of aqueous buffered solutions measured on young leaf surfaces ranged between 76 degrees and 86 degrees and were not dependent on the ph value of the applied droplets. contact angles measured on old leaf surfaces were up to 32 degrees, significantly lower than on young leaf surfaces ... | 2000 | 10977875 |
| ultrastructure of minor-vein phloem and assimilate export in summer and winter leaves of the symplasmically loading evergreens ajuga reptans l., aucuba japonica thunb., and hedera helix l. | minor-vein ultrastructure and sugar export were studied in mature summer and winter leaves of the three broadleaf-evergreen species ajuga reptans var. artropurpurescens l., aucuba japonica thunb. and hedera helix l. to assess temperature effects on phloem loading. leaves of the perennial herb ajuga exported substantial amounts of assimilates in form of raffinose-family oligosaccharides (rfos). its minor-vein companion cells represent typical intermediary cells (ics), with numerous small vacuoles ... | 2001 | 11216844 |
| thermodynamic analysis of diffusion of non-electrolytes across plant cuticles in the presence and absence of the plasticiser tributyl phosphate. | solute mobility in cuticular membranes (cms) of 14 plant species (citrus aurantiumn l., citrus grandis l., hedera helix l., ilex aquifolium l., ilex paraguariensis st.-hil., malus domestica borkh. cv. golden delicious, populus alba l., prunus laurocerasus l., pyrus communis l. cv. bartlett, conference and gellerts butterbirne, pyrus pyrifolia (burm. f.) nakai, schefflera actinophylla (endl.) harms and strophanthus gratus baill.) was measured over the temperature range 25-55 degrees c. the five o ... | 2000 | 11219574 |
| the hydraulic conductance of the angiosperm leaf lamina: a comparison of three measurement methods. | a comparison was made of three methods for measuring the leaf lamina hydraulic conductance (k(lamina)) for detached mature leaves of six woody temperate angiosperm species. the high-pressure method, the evaporative flux method and the vacuum pump method involve, respectively, pushing, evaporating and pulling water out of the lamina while determining the flow rate into the petiole and the water potential drop across the leaf. tests were made of whether the high-pressure method and vacuum pump met ... | 2002 | 12379784 |
| in situ localization associates biologically active plant natriuretic peptide immuno-analogues with conductive tissue and stomata. | plant natriuretic peptide immuno-analogues (irpnp) have previously been shown to affect a number of biological processes including stomatal guard cell movements, ion fluxes and osmoticum-dependent water transport. tissue printing and immunofluorescent labelling techniques have been used here to study the tissue and cellular localization of irpnp in ivy (hedera helix l.) and potato (solanum tuberosum l.). polyclonal antibodies active against human atrial natriuretic peptide (anti-hanp) and antibo ... | 2003 | 12730261 |
| ecophysiological relevance of cuticular transpiration of deciduous and evergreen plants in relation to stomatal closure and leaf water potential. | the water permeability of the leaves of three deciduous plants (acer campestre, fagus sylvatica, quercus petraea) and two evergreen plants (hedera helix, ilex aquifolium) was analysed in order to assess its role as a mechanism of drought resistance. cuticular permeances were determined by measurement of the water loss through adaxial, astomatous leaf surfaces. minimum conductances after complete stomatal closure were obtained by leaf drying curves. the comparison of the water permeabilities dete ... | 2003 | 12815029 |
| an unusual case of death: suffocation caused by leaves of common ivy (hedera helix). detection of hederacoside c, alpha-hederin, and hederagenin by lc-ei/ms-ms. | we report one fatal case of asphyxia caused by leaves of common ivy. macroscopic examination of the corpse during the autopsy disclosed an incredible quantity of leaves of hedera helix in the mouth and throat of the decedent. in order to rule out the possibility of poisoning by the toxic saponins contained in the plant, we have developed an efficient lc-ei/ms-ms assay of hederacoside c, alppha-hederin, and hederagenin in biological fluids and plant material. sample cleanup involved solid-phase e ... | 2003 | 12820750 |
| acute and chronic antiinflammatory profile of the ivy plant, hedera helix, in rats. | hedera helix is a plant well-known as ivy or english ivy, and a member of the araliaceae family. in the present study, we tested the possible antiinflammatory effects of a crude saponin extract (cse) and a saponin's purified extracts (spe) of hedera helix in carrageenan- and cotton-pellet-induced acute and chronic inflammation models in rats. both the cse and spe of hedera helix were found to have antiinflammatory effects. the most potent drug screened was indomethacin (89.2% acute antiinflammat ... | 2003 | 12834000 |
| new and remarkable records of microfungi from turkey. | during a botanical excursion of the university of essen in the year 2002 to north-, central- and south-anatolia we have collected representatives of about 100 genera of microfungi as parasites or saprophytes on crops and wild plants. some of them are new for turkey: passalora dubia on atriplex hortensis, pseudocercospora ligustri on ligustrum ovalifolium, passalora smilacis on smilax aspera, uromyces limonii on limonium spec., puccinia jasmini on jasminim spec., sawadea bicornis on acer negundo, ... | 2003 | 15151298 |
| acute and chronic antiinflammatory effects of hedera colchica in rats. | hedera helix and hedera colchica are the members of araliaceae family. in the present study, we tested the possible antiinflammatory effects of crude (cse) and purified (spe) extracts of hedera colchica in carrageenan- and cotton pellet-induced acute and chronic inflammation models in rats. both cse and spe of hedera colchica were found to have antiinflammatory effects. the most potent drug was found as indomethacin (90%) in the 4 h measurements, while spe (83%) and cse (55%) of hedera colchica ... | 2004 | 15261982 |
| plant-microbe interactions: identification of epiphytic bacteria and their ability to alter leaf surface permeability. | bacteria were either isolated from leaf surfaces of hedera helix or obtained from a culture collection in order to analyse their effect on barrier properties of isolated hedera and prunus laurocerasus cuticles. on the basis of the 16s rdna sequences the genera of the six bacterial isolates from hedera were identified as pseudomonas sp., stenotrophomonas sp. and achromobacter. water permeability of cuticles isolated from h. helix was measured before and after inoculation with the six bacterial st ... | 2005 | 15819920 |
| a multifunctional acyl-acyl carrier protein desaturase from hedera helix l. (english ivy) can synthesize 16- and 18-carbon monoene and diene products. | a desaturase with 83% sequence identity to the coriander delta(4)-16:0-acp desaturase was isolated from developing seeds of hedera helix (english ivy). expression of the ivy desaturase in arabidopsis resulted in the accumulation of 16:1delta(4) and its expected elongation product 18:1delta(6) (petroselinic acid). expression in escherichia coli resulted in the accumulation of soluble, active protein that was purified to apparent homogeneity. in vitro assays confirmed delta(4) desaturation with 16 ... | 2005 | 15939740 |
| acute anti-inflammatory activity of four saponins isolated from ivy: alpha-hederin, hederasaponin-c, hederacolchiside-e and hederacolchiside-f in carrageenan-induced rat paw edema. | the anti-inflammatory potential of alpha-hederin (monodesmoside) and hederasaponin-c from hedera helix, and hederacolchisides-e and -f (bidesmosides) from h. colchica was investigated in carrageenan-induced acute paw edema in rats. saponins and indomethacin were given orally in concentrations of 0.02 and 20mg/kg body wt. for the first phase of acute inflammation, indomethacin was found as the most potent drug. alpha-hederin and hederasaponin-c were found ineffective, while hederacolchisides-e an ... | 2005 | 16008120 |
| role of species diversity and secondary compound complementarity on diet selection of mediterranean shrubs by goats. | goats foraging on mediterranean shrubs containing secondary compounds (toxins) may consume a variety of shrubs that contain different phytotoxins, thereby increasing shrub intake and avoiding toxicosis. we conducted eight experiments to examine whether goats offered different mixtures of shrubs containing different phytotoxins (tannins and saponins) would consume more shrub biomass than goats offered one shrub a single phytotoxin (tannin or saponin). in the first three experiments, goats fed a m ... | 2006 | 16770718 |
| herbal medicines for the treatment of copd: a systematic review. | the aim of the current study was to systematically assess the effectiveness of herbal medicines in treating chronic obstructive pulmonary disease (copd). randomised clinical trials (rcts) testing herbal medicines against any type of control intervention in patients with copd and assessing clinically relevant outcomes were included. the selection of studies, data extraction and validation were performed independently by at least two reviewers. methodological quality was evaluated using the jadad ... | 2006 | 16880367 |
| occurrence of n-phenylpropenoyl-l-amino acid amides in different herbal drugs and their influence on human keratinocytes, on human liver cells and on adhesion of helicobacter pylori to the human stomach. | thirty commonly used medicinal plants were screened by a selective and specific lc-ms/ms method for the occurrence of n-phenylpropenoyl- l-amino acid amides, a new homologous class of secondary products. in 15 plants, one or more of the respective derivatives (1 to 12) were found and quantitated. especially roots from angelica archangelica, fruits of cassia angustifolia, c. senna, coriandrum sativum, leaves from hedera helix, flowers from lavandula spec. and from sambucus nigra contained high am ... | 2007 | 17295182 |
| ethnoveterinary medicines used for ruminants in british columbia, canada. | the use of medicinal plants is an option for livestock farmers who are not allowed to use allopathic drugs under certified organic programs or cannot afford to use allopathic drugs for minor health problems of livestock. | 2007 | 17324258 |
| haemonchus contortus: in vitro and in vivo anthelmintic activity of aqueous and hydro-alcoholic extracts of hedera helix. | in vitro anthelmintic activity of crude extracts of the ripe fruits of hedera helix was investigated on eggs and adult nematode parasites haemonchus contortus. aqueous extract of h. helix was also evaluated for in vivo anthelmintic activity at dose of 1.13 and 2.25 g/kg in sheep artificially infected with h. contortus. ed(50) for egg hatch inhibition was 0.12 and 0.17 mg/ml for aqueous and hydro-alcoholic extracts, respectively. there was no statistically significant difference in the activity o ... | 2007 | 17382320 |
| phytophthora tropicalis on hedera helix and epipremnum aureum in polish greenhouses. | phytophthora tropicalis was isolated from hedera helix and epipremnum aureum showing discoloration of leaves, necrosis of shoot base, spread upwards and on roots. the species was detected from 7/8 plants of hedera and 3/4 of epipremnum. additionally botrytis cinerea, fusarium avenaceum and rhizoctonia solani were recovered from some of diseased plants. p. tropicalis caused leaf necrosis of 13 plant species and tomato seedlings. the quickest spread of necrosis was observed on leaves of peperomia ... | 2006 | 17390874 |
| uptake and storage of pcbs by plant cuticles. | the uptake kinetics and storage of pcbs by isolated cuticles and cuticular waxes from hedera helix, prunus laurocerasus, and ilex aquifolium were studied. small chambers were used, allowing variation in plant uptake parameters to be studied by having the same air boundary layer in each chamber. during the 64 day study tri- and tetrachlorinated biphenyls generally reached equilibrium in waxes but not in whole cuticles. differences between species were observed. higher chlorinated pcb congeners di ... | 2008 | 18350882 |
| heterogeneity of xanthomonas campestris pv. hederae strains from araliaceous hosts. | abstract xanthomonas campestris pv. hederae (synonym x. hortorum pv. hederae) strains (59 total) were collected from plants in the araliaceae family. strains were isolated from hedera helix, schefflera arboricola, brassaia actinophylla, and polyscias spp. from florida, california, hawaii, and new zealand. all strains produced yellow mucoid growth; hydrolyzed esculin, starch, casein and gelatin; were pectolytic; produced urease; and grew on minimal media containing asparagine. all bacterial strai ... | 1999 | 18944676 |
| plant sources of chinese herbal remedies: laboratory efficacy, suppression of meloidogyne javanica in soil, and phytotoxicity assays. | extracts of chinese herbal medicines from plants representing 13 families were tested for their ability to suppress plant-parasitic nematodes. effective concentration (ec(50) and ec(90)) levels for 18 of the extracts were determined in laboratory assays with meloidogyne javanica juveniles and all stages of pratylenchus vulnus. efficacy of 17 extracts was tested against m. javanica in soil. generally, ec(50) and ec(90) values determined in the laboratory were useful indicators for application rat ... | 2002 | 19265919 |
| pollination biology of fruit-bearing hedgerow plants and the role of flower-visiting insects in fruit-set. | in the uk, the flowers of fruit-bearing hedgerow plants provide a succession of pollen and nectar for flower-visiting insects for much of the year. the fruits of hedgerow plants are a source of winter food for frugivorous birds on farmland. it is unclear whether recent declines in pollinator populations are likely to threaten fruit-set and hence food supply for birds. the present study investigates the pollination biology of five common hedgerow plants: blackthorn (prunus spinosa), hawthorn (cra ... | 2009 | 19770165 |
| quantifying the attachment strength of climbing plants: a new approach. | in order to grow vertically, it is essential for climbing plants to firmly attach to their supporting structures. in climbing plants, different strategies for permanent attachment can be distinguished. besides twining stems and tendrils, many plants use attachment pads or attachment roots for this purpose. using a novel custom-built tensile testing setup, the mechanical properties of different permanent attachment structures of self-clinging plant species were investigated, namely the attachment ... | 2010 | 19818882 |
| biodiversity and new records of microfungi in the ruhrarea (north rhine westfalia), germany. | during our investigations of the microflora in nrw (duisburg, düsseldorf and essen incl. the greenhouse of the botanical garden) in 2007 and 2008, we were able to collect and identify about 55 species on trees, bushes and ornamental plants as parasites and saprophytes. some of these species are new for germany or have been only rarely found until now. most of the species belong the ascomycotina, basidiomycotina and deuteromycotina for example arthrocladiella mougeotii (lév.) vassilkov. on lycium ... | 2009 | 20222564 |
| respiration and cell division in plants; oxygen consumption and cell division in the leaves of ligustrum lucidum and hedera helix. | | 1946 | 20280141 |
| naturally occurring nanoparticles from english ivy: an alternative to metal-based nanoparticles for uv protection. | abstract: | 2010 | 20534157 |
| dust particulate absorption by ivy (hedera helix l) on historic walls in urban environments. | the potential bio-protective role of urban greenery and how it interacts with airborne dust and pollutants has been the subject of much recent research. as particulate pollution has been implicated in both the deterioration of building materials and in damaging human health, understanding how it interacts with urban greenery is of great applied interest. common or english ivy (hedera helix l) grows widely on urban walls in many parts of the world, and thus any bio-protective role it might play i ... | 2010 | 20947134 |
| systematic review of clinical trials assessing the effectiveness of ivy leaf (hedera helix) for acute upper respiratory tract infections. | introduction. among nonantibiotic cough remedies, herbal preparations containing extracts from leaves of ivy (hedera helix) enjoy great popularity. objective. a systematic review to assess the effectiveness and tolerability of ivy for acute upper respiratory tract infections (urtis). methods. we searched for randomized controlled trials (rcts), nonrandomized controlled clinical trials and observational studies evaluating the efficacy of ivy preparations for acute urtis. study quality was assesse ... | 2010 | 20976077 |
| delivering high-resolution landmarks using inkjet micropatterning for spatial monitoring of leaf expansion. | | 2011 | 21266074 |
| the effect of the whole extract of common ivy (hedera helix) leaves and selected active substances on the motoric activity of rat isolated stomach strips. | the long tradition of using the dry extract of hedera helix (common ivy) leaves in traditional and contemporary alternative medicine caused that many biological and pharmacological studies have been aimed at evaluating the effects of ivy. some of the results suggest that hedera helix extract possesses bronchodilatatory and antispasmodic activity. on the other hand, the symptoms of ivy intoxication in human and animals, as well as adverse-reactions observed during the therapy with ivy-based pharm ... | 2011 | 21291987 |
| mirna control of vegetative phase change in trees. | after germination, plants enter juvenile vegetative phase and then transition to an adult vegetative phase before producing reproductive structures. the character and timing of the juvenile-to-adult transition vary widely between species. in annual plants, this transition occurs soon after germination and usually involves relatively minor morphological changes, whereas in trees and other perennial woody plants it occurs after months or years and can involve major changes in shoot architecture. w ... | 2011 | 21383862 |
| effect of hedera helix on lung histopathology in chronic asthma. | hedera helix is widely used to treat bronchial asthma for many years. however, effects of this herb on lung histopathology is still far from clear. we aimed to determine the effect of oral administration of hedera helix on lung histopathology in a murine model of chronic asthma.balb/c mice were divided into four groups; i (placebo), ii (hedera helix), iii (dexamethasone) and iv (control). all mice except controls were sensitized and challenged with ovalbumin. then, mice in group i received salin ... | 2012 | 23264408 |
| ephedra alte (joint pine): an invasive, problematic weedy species in forestry and fruit tree orchards in jordan. | a field survey was carried out to record plant species climbed by ephedra alte in certain parts of jordan during 2008-2010. forty species of shrubs, ornamental, fruit, and forest trees belonging to 24 plant families suffered from the climbing habit of e. alte. growth of host plants was adversely affected by e. alte growth that extended over their vegetation. in addition to its possible competition for water and nutrients, the extensive growth it forms over host species prevents photosynthesis, s ... | 2012 | 22645486 |
| draft genome sequence of bacillus licheniformis vsd4, a diesel fuel-degrading and plant growth-promoting phyllospheric bacterium. | we report here the 4.19-mb draft genome sequence of bacillus licheniformis vsd4, a gram-positive bacterium of the bacillaceae family, isolated from leaves of hedera helix growing at a high-traffic city center in belgium. knowledge about its genome will help to evaluate its potential as an inoculant in phylloremediation applications. | 2017 | 28302775 |
| the haploinsufficiency profile of α-hederin suggests a caspofungin-like antifungal mode of action. | the leaves of common ivy (hedera helix) contain the cytotoxic saponin α-hederin, which is inhibitory to candida albicans at low concentrations. to investigate the mode of action of α-hederin, a haploinsufficiency screen was carried out using a library of 1152 saccharomyces cerevisiae deletion strains. an ethanol ivy extract containing α-hederin was used in the initial screen to reduce the amount of compound required. strains exhibiting disproportionately low growth were then examined in more det ... | 2014 | 24569176 |
| antiviral activity of hederasaponin b from hedera helix against enterovirus 71 subgenotypes c3 and c4a. | enterovirus 71 (ev71) is the predominant cause of hand, foot and mouth disease (hfmd). the antiviral activity of hederasaponin b from hedera helix against ev71 subgenotypes c3 and c4a was evaluated in vero cells. in the current study, the antiviral activity of hederasaponin b against ev71 c3 and c4a was determined by cytopathic effect (cpe) reduction method and western blot assay. our results demonstrated that hederasaponin b and 30% ethanol extract of hedera helix containing hederasaponin b sho ... | 2014 | 24596620 |
| therapeutic effect of hedera helix alcoholic extract against cutaneous leishmaniasis caused by leishmania major in balb/c mice. | cutaneous leishmaniasis (cl) is common and endemic in many areas of iran, caused by species of a protozoan parasite belonging to the genus leishmania. there is not any effective vaccine against leishmaniasis; so, therapy is important for prevention and separation of disease. herbal extract for treatment of cl is cost-effective, applicable topically to lesions, and can avoid the development of drug resistance. | 2014 | 25147703 |
| draft genome sequence of rhodococcus erythropolis vsd3, a diesel fuel-degrading and plant growth-promoting bacterium isolated from hedera helix leaves. | we report here the 6.55-mb draft genome sequence of rhodococcus erythropolis vsd3, a gram-positive bacterium of the nocardiaceae family, isolated from leaves of hedera helix growing at a high-traffic city center in belgium. the exploration of its genome will contribute to the assessment of its application as an inoculant in phylloremediation approaches. | 2017 | 28232452 |
| antiprotozoal effect of saponins in the rumen can be enhanced by chemical modifications in their structure. | the antiprotozoal effect of saponins is transitory, as when saponins are deglycosylated to the sapogenin by rumen microorganisms they become inactive. we postulated that the substitution of the sugar moiety of the saponin with small polar residues would produce sapogen-like analogs which might be resistant to degradation in the rumen as they would not be enzymatically cleaved, allowing the antiprotozoal effect to persist over time. in this study, we used an acute assay based on the ability of pr ... | 2017 | 28382023 |
| deposition of particulate matter of different size fractions on leaf surfaces and in waxes of urban forest species. | particulate matter (pm) is an air contaminant in urban and industrial areas that often exceeds limit values, creating serious problems due to its harmful effects on health. planting trees and shrubs as air filters is a way to improve air quality in these areas. however,further knowledge on species effectiveness in air purification is essential this study compared four species of tree (acer campestre l, fraxinus excelsior l, platanus x hispanica mill. ex muenchh. 'acerifolia', tilia cordata mill. ... | 2011 | 21972570 |
| laboratory tests of the residual effect of deltamethrin on vegetation against aedes albopictus. | aedes albopictus, the asian tiger mosquito, was 1st detected in spain in 2004 and since then has spread along the mediterranean coast. new adulticiding strategies are being tested to enhance control of the species. the residual effect of applications of 2 formulations containing deltamethrin over vegetation was evaluated in bioassay tests for 34 days. hedera helix plants were treated with k-othrine sc25 (deltamethrin 2.56% sc) and aqua k-othrine (deltamethrin 2.03% ew). bioassays consisted of ex ... | 2013 | 24199504 |
| [multicentric study on a topical compound with lymph-draining action in the treatment of the phlebostatic ulcer of the inferior limbs]. | phlebostatic sore of the lower limbs is a typical chronic venous insufficiency complication and is still a widely controversial issue in its treatment. the common therapies, in fact, are not yet standardized and they not show complete efficacy. since 2005 to 2007 a multicentric clinical trial was conducted at the plastic and reconstructive surgery of "sapienza" university of rome and at the plastic and reconstructive surgery department, university of perugia, in order to evaluate the efficacy of ... | 2010 | 20109380 |
| intracuticular wax fixes and restricts strain in leaf and fruit cuticles. | this paper investigates the effects of cuticular wax on the release of strain and on the tensile properties of enzymatically isolated cuticular membranes (cms) taken from leaves of agave (agave americana), bush lily (clivia miniata), holly (ilex aquifolium), and ivy (hedera helix) and from fruit of apple (malus × domestica), pear (pyrus communis), and tomato (lycopersicon esculentum). biaxial strain release was quantified as the decrease in cm disc area following wax extraction. stiffness, maxim ... | 2013 | 23750808 |
| fungal planet description sheets: 214-280. | novel species of microfungi described in the present study include the following from south africa: cercosporella dolichandrae from dolichandra unguiscati, seiridium podocarpi from podocarpus latifolius, pseudocercospora parapseudarthriae from pseudarthria hookeri, neodevriesia coryneliae from corynelia uberata on leaves of afrocarpus falcatus, ramichloridium eucleae from euclea undulata and stachybotrys aloeticola from aloe sp. (south africa), as novel member of the stachybotriaceae fam. nov. s ... | 2014 | 25264390 |
| a radioactive assay allowing the quantitative measurement of cuticular permeability of intact arabidopsis thaliana leaves. | cuticular penetration of five different ¹⁴c-labeled chemicals (benzoic acid, bitertanole, carbaryl, epoxiconazole and 4-nitrophenol) into arabidopsis thaliana leaves was measured and permeances p (ms⁻¹) were calculated. thus, cuticular barrier properties of a. thaliana leaves have been characterized quantitatively. epoxiconazole permeance of a. thaliana was 2.79 × 10⁻⁸ ms⁻¹. when compared with cuticular permeances measured with intact stomatous and astomatous leaf sides of prunus laurocerasus, f ... | 2011 | 21344313 |
| melissopalynological and volatile analysis of honeys from corsican arbutus unedo habitat. | thirty corsican "autumn maquis" honeys were characterized by the typical combination of autumnal taxa: arbutus unedo, hedera helix, smilax aspera, rosmarinus officinalis, and two asteraceae pollen forms. corsican origin was characterized by the diversity of the taxa's biogeographical origins and significant presence of castanea sativa and quercus sp. volatile fractions of "autumn maquis" honeys were dominated by isophorone and 3,4,5-trimethylphenol. the latter is reported in a. unedo honey for t ... | 2014 | 25522552 |
| efficacy of dry extract of ivy leaves in children with bronchial asthma--a review of randomized controlled trials. | to investigate if extracts from dried ivy leaves (hedera helix l.) are effective in the treatment of chronic airway obstruction in children suffering from bronchial asthma. | 2003 | 12725580 |
| analysis of photosystem i donor and acceptor sides with a new type of online-deconvoluting kinetic led-array spectrophotometer. | the newly developed dual/klas-nir spectrophotometer, technical details of which were reported very recently, is used in measuring redox changes of p700, plastocyanin (pc) and ferredoxin (fd) in intact leaves of hedera helix, taxus baccata and brassica napus an overview of various light-/dark-induced changes of deconvoluted p700(+), pc(+) and fd(-) signals is presented demonstrating the wealth of novel information and the consistency of the obtained results. fd(-) changes are particularly large a ... | 2016 | 27053032 |
| accumulation and transport of (2,4-dichlorophenoxy)acetic acid in plant cuticles: i. sorption in the cuticular membrane and its components. | partition coefficients (k) of (2,4-dichlorophenoxy)acetic acid (2,4-d) have been determined for the system plant cuticle/aqueous buffer. cuticles isolated enzymatically from leaves (clivia miniata, ficus elastica, citrus aurantium, hedera helix, pyrus communis cv. conférence and cv. williams, olea europaea) and fruits (lycopersicon esculentum, capsicum annuum, solanum melongena, cucumis sativus) were utilized. only the nondissociated species of 2,4-d was sorbed by cuticles and their lipophilic c ... | 1984 | 6734501 |
| mechanisms of cuticular uptake of xenobiotics into living plants: 1. influence of xenobiotic dose on the uptake of three model compounds applied in the absence and presence of surfactants into chenopodium album, hedera helix and stephanotis floribunda leaves. | this study determined the uptake of three model compounds, applied in the presence and absence of surfactants, into the leaves of three plant species (chenopodium album l, hedera helix l and stephanotis floribunda brongn). the results with 2-deoxy-d-glucose, 2,4-dichlorophenoxyacetic acid and epoxiconazole in the presence ofsurfactants (the polyethylene glycol monododecyl ethers c12eo3, c12eo6, c12eo10 and a trisiloxane ethoxylate with mean eo of 7.5, all used at one equimolar concentration and ... | 2004 | 15532685 |
| effect of humidity on cuticular water permeability of isolated cuticular membranes and leaf disks. | the effects of humidity on water permeability of astomatous, isolated cuticular membranes and leaf disks of citrus aurantium l., vinca major l., prunus laurocerasus l., hedera helix l. and forsythia intermedia (thunb.) vahl. were investigated by a new method using 3h2o. with isolated cuticular membranes of p. laurocerasus the isotope method resulted in values similar to those obtained by a well-established gravimetric method. cuticular water permeability significantly increased by factors of 2 t ... | 2001 | 11800392 |
| effect of temperature on cuticular transpiration of isolated cuticular membranes and leaf discs. | cuticular transpiration was measured in the temperature range between 10 degrees c and 55 degrees c using tritiated water and five species (vinca major l., prunus laurocerasus l., forsythia intermedia l., citrus aurantium l., and hedera helix l.). cuticular water permeabilities measured with isolated cuticular membranes were not different from cuticular water permeabilities measured with leaf discs. depending on the species cuticular water permeabilities increased by factors between 12 (v. major ... | 2001 | 11520878 |
| an unusual seed-specific 3-ketoacyl-acp synthase associated with the biosynthesis of petroselinic acid in coriander. | petroselinic acid (18:1 delta6) is the major component of the seed oil of umbelliferae species such as coriander (coriandrum sativum) as well as araliaceae and garryaceae species. this unusual fatty acid is synthesized in plastids by the delta4 desaturation of palmitoyl-acyl carrier protein (16:0-acp) and subsequent elongation of delta4-hexadecenoyl (16:1 delta4)-acp. to characterize the enzymatic nature of the elongation reaction, an in vitro assay was developed with 16:1 delta4-acp and 16:0-ac ... | 2001 | 11669576 |
| the major allergen of dendropanax trifidus makino. | dendropanax trifidus makino (family araliaceae, syn. gilibertia trifida makino) has been reported as causing allergic contact dermatitis in japan. to identify the major allergen, fractionated extracts of fresh leaves of dendropanax trifidus were patch tested on 2 patients with hypersensitivity to the plant. cis-9,17-octadecadiene-12,14-diyne-1, 16-diol (i), an analog of falcarinol, was identified as an active component. 18 normal control subjects were patch tested with the leaf of dendropanax tr ... | 1997 | 9197960 |
| contact dermatitis as an adverse reaction to some topically used european herbal medicinal products - part 2: echinacea purpurea-lavandula angustifolia. | this review focuses on contact dermatitis as an adverse effect of a selection of topically used herbal medicinal products for which the european medicines agency has completed an evaluation up to the end of november 2013 and for which a community herbal monograph has been produced. part 2: echinacea purpurea moench-lavandula angustifolia mill. | 2015 | 25600644 |
| fungal planet description sheets: 281-319. | novel species of fungi described in the present study include the following from south africa: alanphillipsia aloeicola from aloe sp., arxiella dolichandrae from dolichandra unguiscati, ganoderma austroafricanum from jacaranda mimosifolia, phacidiella podocarpi and phaeosphaeria podocarpi from podocarpus latifolius, phyllosticta mimusopisicola from mimusops zeyheri and sphaerulina pelargonii from pelargonium sp. furthermore, barssia maroccana is described from cedrus atlantica (morocco), codinae ... | 2014 | 25737601 |
| optical properties of the adaxial and abaxial faces of leaves. chlorophyll fluorescence, absorption and scattering coefficients. | emission fluorescence spectra were obtained for the adaxial and abaxial faces of dicotyledonous (ficus benjamina l., ficus elastica, gardenia jasminoides and hedera helix) and monocotyledonous leaves (gladiolus spp. and dracaena cincta bicolor). after correction by light-re-absorption processes, using a previously published physical model, the adaxial faces of dicotyledons showed a fluorescence ratio fred/ffar-red rather lower than the respective values for the abaxial faces. monocotyledons and ... | 2007 | 17668118 |
| species-specific variation in the importance of the spectral quality gradient in canopies as a signal for photosynthetic resource partitioning. | plants adjust the distribution of photosynthetic capacity and chlorophyll to canopy density. the importance of the gradient in the red : far-red ratio (r : fr) relative to the irradiance gradient was studied for its perception with respect to this partitioning of photosynthetic resources. whether the relative importance of these two signals varied between six species of different growth habit (phaseolus vulgaris, lysimachia vulgaris, hedera helix, ficus benjamina, carex acutiformis and brachypod ... | 2004 | 15374835 |
| [the prevalence of skin and mucosal symptoms in gardeners handling ficus benjamina (weeping fig) and hedera helix (ivy). a cross-sectional study]. | allergic and toxic initiative symptoms from skin, eyes and respiratory tract are well known among gardeners this study reports the prevalence of these symptoms among gardeners working with ficus benjamina (fb) and hedera helix (hh). | 2003 | 14531355 |
| relative sensitivity of greenhouse pot plants to long-term exposures of no- and no2-containing air. | thirty-five cultivars of pot plants of 20 families were exposed for 50-64 days in a greenhouse facility to either 1 microl litre(-1) no with 0.5 microl litre(-1) no2, or 1 microl litre(-1) no2 with 0.1 microl litre(-1) no for 15 h each day, with air which was free from these gases as the reference. a sensitivity ranking of the pot plants was compiled, with the highest priority on visible injuries, followed by growth reductions, primarily as a response to the no-dominated exposures, simulating th ... | 1994 | 15091658 |
| [selection and purification potential evaluation of woody plant in vertical flow constructed wetlands in the subtropical area]. | in order to solve the problem that wetland herbaceous plants tend to die during winter in subtropics areas, selection and purification potential evaluation experiments were carried out by introducing into the constructed wetlands 16 species of woody wetland plants. cluster analysis was performed by including the morphological characteristics, physiological characteristics, as well as nitrogen and phosphorus accumulation of the woody wetland plants. the results indicated that there were significa ... | 2014 | 24812951 |
| phytophthora niederhauserii sp. nov., a polyphagous species associated with ornamentals, fruit trees and native plants in 13 countries. | a non-papillate, heterothallic phytophthora species first isolated in 2001 and subsequently from symptomatic roots, crowns and stems of 33 plant species in 25 unrelated botanical families from 13 countries is formally described here as a new species. symptoms on various hosts included crown and stem rot, chlorosis, wilting, leaf blight, cankers and gumming. this species was isolated from australia, hungary, israel, italy, japan, the netherlands, norway, south africa, spain, taiwan, turkey, the u ... | 2014 | 24871599 |
| description of rotylenchus graecus n. sp. from greece (nematoda: hoplolaimidae). | rotylenchus graecus n. sp. is described and illustrated from a bisexual population found in filippias, epirus, northwestern greece, in the rhizosphere of ivy (hedera helix l.) and giant reed (arundo donax l.) grown on the edge of irrigation canals. rotylenchus graecus n. sp. is characterized by a lip region with five annules, stylet length of 29-32 mum, vulva position at 53-65%, female tail pointed-conoid with 15-23 annules, and bursa with regularly annulated margins enveloping tail. the new spe ... | 1996 | 19277350 |