| a plasmid of rhizobium meliloti 41 encodes catabolism of two compounds from root exudate of calystegium sepium. | our objectives were to identify substances produced by plant roots that might act as nutritional mediators of specific plant-bacterium relationships and to delineate the bacterial genes responsible for catabolizing these substances. we discovered new compounds, which we call calystegins, that have the characteristics of nutritional mediators. they were detected in only 3 of 105 species of higher plants examined: calystegia sepium, convolvulus arvensis (both of the convolvulaceae family), and atr ... | 1988 | 2981046 |
| nucleotide sequence analysis of tl-dna of agrobacterium rhizogenes agropine type plasmid. identification of open reading frames. | we have determined the nucleotide sequence of the ri tl-dna region from an agrobacterium rhizogenes agropine-type plasmid using subcloned regions from the essentially identical ri tl-dnas from strains a4 and hri. this sequenced region of 21,126 base pairs (bp) contains the complete tl-dna region of the ri plasmid as determined by analysis of tl-dna borders in the genome of infected, clonal, convolvulus arvensis plants. the left and right borders of the tl-dna are flanked by 25-bp sequences which ... | 1986 | 3001043 |
| phytochemical investigation of convolvulus arvensis (convolvulaceae). | | 1973 | 4698995 |
| cortical cell death during lateral root formation. | root segments of convolvulus arvensis, the field bindweed, were examined with the electron microscope to make possible a description of the fine structural correlates of lateral root protrusion through cortical parenchyma. particular attention was directed to the outermost primordium cells, derived by meristematic activity from the endodermis, and to the contiguous cortical parenchyma cells. by following the fate of the casparian strip through numerous divisions of the endodermal cell, informati ... | 1969 | 5782442 |
| [on the pharmacology of convolvulus arvensis l]. | | 1966 | 5988620 |
| phenocritical times in the process of in vitro shoot organogenesis. | shoot organogenesis occurs when leaf explants of convolvulus arvensis are cultured on murashige and skoog salts, sucrose, vitamins, and 0.05 mg/liter iaa with 7.0 mg/liter 2-isopentenyl adenine. under the influence of this shoot inducing medium (sim), the explants become competent for the organogenic effects of sim and eventually become determined for shoot formation. the induction process includes five separate transient sensitivities to inhibitors. such stage-specific inhibitions reflect pheno ... | 1984 | 6420215 |
| transformation of several species of higher plants by agrobacterium rhizogenes: sexual transmission of the transformed genotype and phenotype. | the t-dna of the ri plasmid from agrobacterium rhizogenes is compatible with the regeneration of whole plants from genetically transformed roots and is transmitted through meiosis to the progeny of genetically transformed plants in carrot, tobacco, and morning glory (convolvulus arvensis). the presence of ri t-dna is correlated with a phenotype that in some respects is invariable from species to species and in other respects varies as a function of species, organ clone within species, or individ ... | 1984 | 6744417 |
| competence and determination in the process of in vitro shoot organogenesis. | leaf explants of convolvulus arvensis produce shoots when cultured on murashige and skoog salts, sucrose, vitamins and 0.05 mg/liter iaa plus 7.0 mg/liter 2-isopentenyl adenine. shoot-inducing, root-inducing, or callus-inducing medium (sim, rim, or cim) will cause small amounts of callus to form at the cut edges of the explant. this first-formed callus is developmentally interchangeable: sim induces shoots in callus formed on cim or sim with equal effect and efficiency. once induction begins in ... | 1983 | 6825936 |
| tropane alkaloids and toxicity of convolvulus arvensis. | horses in a few, localized northern colorado pastures exhibited weight loss and colic. at post mortem, intestinal fibrosis and vascular sclerosis of the small intestine was identified. the pastures where the affected horses grazed were overrun by field bindweed (convolvulus arvensis). bindweed from the pasture was found to contain the tropane alkaloids tropine, pseudotropine, and tropinone and the pyrrolidine alkaloids cuscohygrine and hygrine. laboratory mice readily ate c. arvensis and exhibit ... | 1995 | 7495531 |
| calystegins, a novel class of alkaloid glycosidase inhibitors. | the alkaloid extract from roots of naturally growing convolvulus arvensis, purified by ion-exchange chromatography, showed significant inhibitory activity toward beta-glucosidase and alpha-galactosidase. the demonstrated occurrence of polyhydroxy-nortropane alkaloids, the calystegins, in c. arvensis and their structural similarity to known polyhydroxy alkaloid glycosidase inhibitors, suggested that these might be responsible for the observed activity. pure calystegins, isolated from transformed ... | 1993 | 8323301 |
| toxicity of field bindweed (convolvulus arvensis) to mice. | the effects of feeding high and low doses of field bindweed (convolvulus arvensis) to mice were investigated. bindweed contains several alkaloids, including pseudotropine, and lesser amounts of tropine, tropinone, and meso-cuscohygrine. mice fed bindweed exclusively died or were euthanized after 4-7 d and had severe hepatic necrosis and gastritis with ulceration or erosions. mice fed low doses of bindweed along with standard laboratory mouse diet for 6 or 8 w had no clinical disease or gross les ... | 1995 | 8592835 |
| regulation of gelatinase b (mmp-9) in leukocytes by plant lectins. | the stimulatory or inhibitory effects of plant lectins on the production of gelatinase a (mmp-2) and gelatinase b (mmp-9) by mononuclear white blood cells was investigated by substrate zymography. leukocyte cultures from 24-h old buffy coats were spontaneously activated and produced high levels of gelatinase b. using such cultures the suppressing activity of the datura stramonium, viscum album, bauhinia purpurea, triticum aestivum and maackia amurensis lectins on gelatinase b induction were demo ... | 1998 | 9607327 |
| heavy metals and arsenic uptake by wild vegetation in the guadiamar river area after the toxic spill of the aznalcóllar mine. | on 25 april 1998, approximately 4.5 hm(3) of pyritic sludge, containing 5000 mg of as kg(-1) among other pollutants, was spilled into the agrio and guadiamar rivers and the surrounding agricultural areas (aznalcóllar, seville, southern spain). many trace metals such as pb, cu, zn, cd, tl, sb and as reached the doñana national park, the largest wetland area in europe, affecting soils, different plant and animal species. in order to recuperate the affected lands by employing plants capable of accu ... | 2002 | 12126811 |
| efficacy of phomopsis convolvulus as a mycoherbicide for convolvulus arvensis. | the purpose of the investigations was to determine the efficacy of different conidia concentrations of phomopsis convolvulus ormeno on different leaf stages of convolvulus arvensis seedlings and regrowth potential of c. arvensis 25 days after inoculation. furthermore, the potential of p. convolvulus on the growth of c. arvensis derived from different root lengths was studied. the results showed a great reduction in dry weight of above-ground biomass with more than 80% irrespective of the conidia ... | 2001 | 12425103 |
| floristic and agronomic aspects of cereal weeds in the constantine high plains. | three hundred fifty nine fields of cereals were surveyed by stratified sampling in the constantine high plains (north-east, algeria). in total 254 species belonging to 34 plant families were recorded. the results indicated that five families the asteraceae, fabaceae, poaceae, brassicaceae and apiaceae were prevalent and accounted for 55% of the species. annuals (70%), broad leaved (87%) and the mediterranean floristic element (63%) were predominant and characterized the weed flora. the agronomic ... | 2001 | 12425105 |
| evaluation of the growth response of six invasive species to past, present and future atmospheric carbon dioxide. | the response of plant species to future atmospheric carbon dioxide concentrations [co(2)] has been determined for hundreds of crop and tree species. however, no data are currently available regarding the response of invasive weedy species to past or future atmospheric [co(2)]. in the current study, the growth of six species which are widely recognized as among the most invasive weeds in the continental united states, canada thistle (cirsium arvense (l.) scop.), field bindweed (convolvulus arvens ... | 2003 | 12493868 |
| effects of a high molecular mass convolvulus arvensis extract on tumor growth and angiogenesis. | plant materials represent promising sources of anti-cancer agents. we developed and tested a novel extract from the ubiquitous plant convolvulus arvensis. | 2002 | 12572240 |
| bioaccumulation of cadmium, chromium and copper by convolvulus arvensis l.: impact on plant growth and uptake of nutritional elements. | the remediation of heavy metal-contaminated sites using plants presents a promising alternative to current methodologies. in this study, the potential accumulation of convolvulus arvensis l. for cd(ii), cr(vi), and cu(ii) was determined using an agar-based medium. the shoots of c. arvensis plants exposed to 20 mgl(-1) of these heavy metals, demonstrated capability to accumulate more than 3800 mg of cr, 1500 mg of cd, and 560 mg of cu per kg of dry tissue. the outcome of this study and the field ... | 2004 | 14766155 |
| antidiarrhoeal activity of some egyptian medicinal plant extracts. | the antidiarrhoeal activity of six egyptian medicinal plant extracts (200 and 400 mg kg(-1)) and their effect on motility of isolated rabbit's duodenum was investigated. phytochemical screening of the plant extracts for their active constituents was also carried out by tlc. oral administration of methanol extract from conyza dioscoridis (cd) or alhagi maurorum (am) in a 200 mg kg(-1) dose exhibits a significant antidiarrhoeal effect against castor oil-induced diarrhoea, while mentha microphylla ... | 2004 | 15138016 |
| leaf damage induces twining in a climbing plant. | successful climbing by vines not only prevents shading by neighbouring vegetation, but also may place the vines beyond ground herbivores. here we tested the hypothesis that herbivory might enhance climbing in a vine species, and that such induced climbing should be greater in the shade. we assessed field herbivory in climbing and prostrate ramets of the twining vine convolvulus arvensis. we evaluated plant climbing after mechanical damage in a glasshouse under both sun and shade conditions, and ... | 2005 | 15998392 |
| vitex agnus-castus is a preferred host plant for hyalesthes obsoletus. | hyalesthes obsoletus signoret (homoptera: cixiidae) is a polyphagous planthopper that transmits stolbur phytoplasma (a causative agent of "yellows" disease) to various weeds, members of the solanaceae, and wine grapes (vitis vinifera l.) in europe and the middle east. planthoppers were collected by hand vacuuming eight native plant species. vitex agnus-castus l., a shrub in the verbenaceae, hosted the largest number of h. obsoletus, although olea europaea l. also served as a host for adults. usi ... | 2005 | 16124232 |
| distribution of hydrogen-metabolizing bacteria in alfalfa field soil. | h(2) evolved by alfalfa root nodules during the process of n(2) fixation may be an important factor influencing the distribution of soil bacteria. to test this hypothesis under field conditions, over 700 bacterial isolates were obtained from fallow soil or from the 3-mm layer of soil surrounding alfalfa (medicago sativa l.) root nodules, alfalfa roots, or bindweed (convolvulus arvensis l.) roots. bacteria were isolated under either aerobic or microaerophilic conditions and were tested for their ... | 1986 | 16347207 |
| isolation and identification of tl-dna/plant junctions in convolvulus arvensis transformed by agrobacterium rhizogenes strain a4. | we have constructed a charon 4a phage library containing insert dna isolated from a morning glory (convolvulus arvensis) plant (clone 7) regenerated from a root organ culture incited by agrobacterium rhizogenes, strain a4. using a subcloned region of the ri plasmid as p-labeled probe, two lambda clones containing most of the 'left' t-dna (tl) region were isolated. one of these lambda clones contains the left tl-dna/plant junction, which was located by comparing nucleotide sequences from the appr ... | 1985 | 16453649 |
| biochemical and spectroscopic studies of the response of convolvulus arvensis l. to chromium(iii) and chromium(vi) stress. | the objective of the present study was to determine the oxidative stress caused by hexavalent chromium (cr[vi]), the chromium (cr) uptake, and the cr speciation in convolvulus arvensis l. plants grown in hydroponics media containing either cr(vi) or cr(iii). the results demonstrated that c. arvensis plants exposed to cr(vi) concentrations ranging from 0 to 40 mg/l expressed higher ascorbate peroxidase specific activity in roots than in shoots. on the other hand, catalase activity monitored in pl ... | 2006 | 16494245 |
| vegetative reproduction and chemical control with post-emergent herbicides of field bindweed (convolvulus arvensis l.). | it is clearly seen from data that roots of convolvulus arvensis l. have more and less intensive regenerative period during growing season. the more intensive period is in autumn, because in that time roots culminate nutrients, carbohydrate as starch and sugar. the less intensive regenerative or shoot-growing period is in spring, called "late spring bud dormancy". experiments were conducted to get more information and further details about the regenerative capacity of roots close to and far from ... | 2005 | 16637219 |
| the physiology of convolvulus arvensis (morning-glory or bindweed) in relation to its control by chemical sprays. | | 1930 | 16652663 |
| amount, distribution, and seasonal trend of certain organic reserves in the root system of field bindweed, convolvulus arvensis l. | | 1943 | 16653838 |
| food reserve depletion and synthesis in field bindweed, convolvulus arvensis l., as related to 7-day and 14-day intervals of cultivation. | | 1943 | 16653855 |
| deoxyribonucleic acid synthesis in root cap cells of cultured roots of convolvulus. | isolated cultured roots of convolvulus arvensis l. were incubated in 0.2 microcurie per milliliter methyl-(3)h-thymidine for 14 hours, for 64 hours, or for 14 hours followed by transfer to fresh nutrient medium without tritiated thymidine. autoradiographs of serial, longitudinal sections of roots which were continuously incubated with tritiated thymidine showed that cells of the root cap columella did not undergo dna synthesis after their formation from the root cap initials. in roots pulse-labe ... | 1971 | 16657765 |
| cell wall regeneration around protoplasts isolated from convolvulus tissue culture. | protoplasts of convolvulus arvensis l. tissue culture regenerated a wall-like structure within 3 days in culture. although unusually electron dense and atypically amorphous in the electron microscope, this structure could be digested with myrothecium cellulase but was resistant to protease, a rohm and haas pectinase, and a beta-1, 3-exoglucanase just like the original wall. a cytochemical test for callose was negative. wall regeneration required a readily metabolized external carbon source and w ... | 1972 | 16658192 |
| interactive effects of leaf damage, light intensity and support availability on chemical defenses and morphology of a twining vine. | in a greenhouse study, we evaluated the effect of the light environment and support availability on the induction of tropane alkaloids (tas) after leaf damage in the twining vine convolvulus arvensis. we also tested whether leaf damage modifies the phenotypic responses of the plant to shade and physical support. we found a consistent pattern of induction of tas after leaf damage in each environmental condition. the induction of tas was differentially affected by combinations of support and light ... | 2007 | 17111219 |
| crop-weed competition between sunflower (helianthus annuus l.) and convolvulus arvensis l. in substitutive experiments. | the main characteristics of a substitutive experiment is that the proportions of two species in the mixtures are varied while the overall density of the two species is maintained constant - a replacement series. in our experiments early competition between sunflower and field bindweed (convolvulus arvensis) was studied in a replacement studies under glasshouse conditions. pot experiments were set up with the following treatments: 1, sunflower 100% (6 plants pot(-1)); 2, sunflower 66.6% (4 plants ... | 2006 | 17390820 |
| effect of fertilization on the weediness of maize in a long-term field experiment. | we carried our examination in a long-term fertilization field experiment in 2005. in the experiment we had opportunity to compare the weediness in npk and npk + fym1 treatments, and we could study the effect of increasing n dosis on the weeds and maize. the bi-factorial trial was arranged in split plot design with three replications. the weed survey was made 25 days after seeding in the 27th of may. for the weed survey the balázs-ujvárosi method was applied. after the weed survey we collected al ... | 2006 | 17390821 |
| analysis of the sugar-binding specificity of mannose-binding-type jacalin-related lectins by frontal affinity chromatography--an approach to functional classification. | the jacalin-related lectin (jrl) family comprises galactose-binding-type (gjrls) and mannose-binding-type (mjrls) lectins. although the documented occurrence of gjrls is confined to the family moraceae, mjrls are widespread in the plant kingdom. a detailed comparison of sugar-binding specificity was made by frontal affinity chromatography to corroborate the structure-function relationships of the extended mjrl subfamily. eight mjrls covering a broad taxonomic range were used: artocarpin from art ... | 2008 | 18266762 |
| transgenic mimicry of pathogen attack stimulates growth and secondary metabolite accumulation. | plant secondary metabolites, including pharmaceuticals, flavorings and aromas, are often produced in response to stress. we used chemical inducers of the pathogen defense response (jasmonic acid, salicylate, killed fungi, oligosaccharides and the fungal elicitor protein, cryptogein) to increase metabolite and biomass production in transformed root cultures of the medicinal plant, withania somnifera, and the weed, convolvulus sepium. in an effort to genetically mimic the observed effects of crypt ... | 2009 | 18668338 |
| allelopathic potential of trifolium resupinatum and t. alexandrium on seed germination of four weed species. | laboratory studies were conducted to determine the seed germination of amaranthus retroflexus, convolvulus arvensis, secale cereale and sinapis arvensis as affected by water-and methanol-soluble constituents of persian and berseem clovers. aboveground tissues of the clovers were collected during flowering stage and dried. three concentrations of aqueous and methanolic extracts were used: full-strength (33.3 g l(-1)), half-strength (16.7 g l(-1)) and quarter-strength (8.3 g l(-1)). the weed seeds ... | 2007 | 19070068 |
| degradation of fuel oil in salt marsh soils affected by the prestige oil spill. | we assessed natural degradation of fuel oil in three marshes from galicia (spain) affected by the prestige oil spill (baldaio, barizo, and muxía). soil samples collected from polluted and unpolluted areas on four different dates were used to determine total petroleum hydrocarbon content and fuel-oil components. natural degradation was monitored by analysing changes in the proportion of saturated hydrocarbons, aromatics, asphaltenes and resins in the soils, and also by evaluating the degree of de ... | 2009 | 19157704 |
| characterization of bois noir isolates by restriction fragment length polymorphism of a stolbur-specific putative membrane protein gene. | bois noir phytoplasma (bnp), widespread in wine-producing areas of europe and endemic in france and italy, is classified in the 16srxii-a subgroup, whose members are referred to as stolbur phytoplasmas. the 16s rdna gene of stolbur phytoplasma shows low variability, and few non-ribosomal genes are available as markers to assess variation among isolates. we used the stolbur-specific stol-1h10 gene, encoding a putative membrane-exposed protein, to investigate genetic diversity of french and italia ... | 2009 | 19453230 |
| phytoremediation of petroleum-polluted soils: application of polygonum aviculare and its root-associated (penetrated) fungal strains for bioremediation of petroleum-polluted soils. | petroleum-polluted soils are a common disaster in many countries. bioremediation of oil contamination in soils is based on the stimulation of petroleum-hydrocarbon-degrading fungal and microbial communities. a field study was conducted in a petroleum-contaminated site to find petroleum-resistant plants and their root-associated fungal strains for use in bioremediation of petroleum-polluted soils. results and observations showed that the amounts of petroleum pollution in nonvegetated soils were s ... | 2010 | 19932506 |
| favorable fragmentation: river reservoirs can impede downstream expansion of riparian weeds. | river valleys represent biologically rich corridors characterized by natural disturbances that create moist and barren sites suitable for colonization by native riparian plants, and also by weeds. dams and reservoirs interrupt the longitudinal corridors and we hypothesized that this could restrict downstream weed expansion. to consider this "reservoir impediment" hypothesis we assessed the occurrences and abundances of weeds along a 315-km river valley corridor that commenced with an unimpounded ... | 2010 | 20945766 |
| notes on some variations in field bindweed (convolvulus arvensis l.). | | 1946 | 21015080 |
| determination of fungal pathogens of common weed species in the vicinity of tokat, turkey. | this study was carried out to determine the fungal pathogens on chenopodium album l., cirsium arvense (l.) scop., convolvulus arvensis l., cynodon dactylon (l.) pers., delphinium consolida l., portulaca oleracea l., rumex crispus l., solanum nigrum l., sorghum halepense (l.) pers. and xanthium strumarium l. which were common weed species of agricultural areas. surveys were conducted in may-june and august-september in 2004-2005 growing seasons. during the surveys density and frequency of the abo ... | 2010 | 21542473 |
| ethnobotany of food plants in the high river ter valley (pyrenees, catalonia, iberian peninsula): non-crop food vascular plants and crop food plants with medicinal properties. | the present study reports a part of the findings of an ethnobotanical research project conducted in the catalan region of the high river ter valley (iberian peninsula), concerning the use of wild vascular plants as food and the medicinal uses of both wild and cultivated food plants. we have detected 100 species which are or have been consumed in this region, 83 of which are treated here (the remaining are the cultivated food plants without additional medicinal uses). some of them, such as achill ... | 2009 | 21883071 |
| analysis of tr-dna/plant junctions in the genome of a convolvulus arvensis clone transformed by agrobacterium rhizogenes strain a4. | a charon 4a phage library, containing insert dna isolated from a morning glory (convolvulus arvensis) plant genetically transformed by ri t-dna from agrobacterium rhizogenes strain a4, was used to isolate a lambda clone that contains part of the ri tl-dna and the complete tr-dna. the two ri t-dnas were recovered adjacent to each other in a tail-to-tail configuration (i.e. with the tr-dna inverted with respect to the tl-dna). comparison of nucleotide sequences from this lambda clone with the corr ... | 1989 | 24272719 |
| aspergillus leaf spot of field bindweed (convolvulus arvensis l.) caused by aspergillus niger in china. | leaf spot was found on field bindweed (convolvulus arvensis l.) in shihezi city, xinjiang province, china, during the summer of 2015. pathogens were isolated from the infected leaves of field bindweed and identified as aspergillus niger based on morphological and molecular analyses (internal transcribed spacer rdna and β-tubulin gene). a pathogenicity test confirmed that aspergillus niger caused the healthy leaves of field bindweed to become diseased. to our knowledge, this is the first report o ... | 2016 | 27247901 |
| evaluation of the catalytic, antibacterial and anti-biofilm activities of the convolvulus arvensis extract functionalized silver nanoparticles. | in this study, a rapid green synthesis of the silver nanoparticles (agnps) using leaves extract of convolvulus arvensis was investigated. uv-visible spectra showed the spr band at around 430nm which proved the agnp formation. the reduction of silver ions to nanoparticles was completed within 150min. particle size analysis verified the formation of agnps with average size of 28nm, while their pdi was 0.2. xrd patterns verified the crystalline nature of produced agnps. sem images verified the pres ... | 2017 | 28039788 |
| a study to investigate the biological activity of proteoglycan mixture extract from convolvulus arvensis. | convolvulus arvensis l. (convolvulaceae), bindweeds, is inhabitant to iran and its proteoglycan mixture (pgm) has been reported to possess different biological activities. in the present study, we aimed to investigate different properties of pgm including anti-tumor, anti-angiogenesis and immunostimulatory activities. | 2014 | 25324459 |
| weed vegetation ecology of arable land in salalah, southern oman. | this paper applies multivariate statistical methods to a data set of weed relevés from arable fields in two different habitat types of coastal and mountainous escarpments in southern oman. the objectives were to test the effect of environmental gradients, crop plants and time on weed species composition, to rank the importance of these particular factors, and to describe the patterns of species composition and diversity associated with these factors. through the application of twinspan, dca and ... | 2013 | 23961246 |
| health risk assessment and multivariate apportionment of trace metals in wild leafy vegetables from lesser himalayas, pakistan. | fresh wild leafy vegetables and related soil samples were collected from lesser himalayas, pakistan to evaluate the trace metal levels and related health risk to the consumers. the samples were prepared by acid digestion, followed by quantification of selected trace metals (fe, zn, cu, mn, cr, cd and pb) on atomic absorption spectrophotometer. generally, in the vegetables highest concentrations were detected for fe, followed by zn, mn and pb. among the vegetables, highest concentrations of zn, c ... | 2013 | 23490195 |
| exotic plant infestation is associated with decreased modularity and increased numbers of connectors in mixed-grass prairie pollination networks. | the majority of pollinating insects are generalists whose lifetimes overlap flowering periods of many potentially suitable plant species. such generality is instrumental in allowing exotic plant species to invade pollination networks. the particulars of how existing networks change in response to an invasive plant over the course of its phenology are not well characterized, but may shed light on the probability of long-term effects on plant-pollinator interactions and the stability of network st ... | 2016 | 27182727 |
| phoma crystallifera with phytotoxic effects and pathogenic potential against field bindweed (convolvulus arvensis l.) in iran. | to identify a potential pathogenic isolate of fungus on convolvulus arvensis and to determine its phytotoxic activity, which revealed the presence of toxic metabolites responsible for the toxicity against the target weed. | 2017 | 28160348 |
| "candidatus liberibacter solanacearum" associated with the psyllid, bactericera maculipennis (hemiptera: triozidae). | the psyllid bactericera maculipennis (crawford) (hemiptera: triozidae) often cohabits field bindweed (convolvulus arvensis, solanales: convolvulaceae) and other plants with the congeneric psyllid, bactericera cockerelli (šulc), in the pacific northwestern united states. bactericera cockerelli is a vector of "candidatus liberibacter solanacearum," the pathogen associated with zebra chip disease of potato (solanales: solanaceae). because b. maculipennis and b. cockerelli both naturally occur on ce ... | 2017 | 28108600 |
| ethnobotany of the balti community, tormik valley, karakorum range, baltistan, pakistan. | limited health facilities and malnutrition are major problems in the karakorum range of northern pakistan, often resulting in various human disorders. since centuries, however, local communities in these areas have developed traditional methods for treating various ailments and local foods capes that can be significant for devising public health and nutritional policies. this study was intended to document the ethnobotanical knowledge of the local peoples in the tormik valley, especially in the ... | 2016 | 27612599 |
| the effect of convolvulus arvensis dried extract as a potential antioxidant in food models. | in this study, the antioxidant activity of the convolvulus arvensis linn (ca) ethanol extract has been evaluated by different ways. the antioxidant activity of the extract assessed by 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (abts) radical cation, the oxygen radical absorbance capacity (orac) and the ferric reducing antioxidant power (frap) was 1.62 mmol trolox equivalents (te)/g dw, 1.71 mmol te/g dw and 2.11 mmol te/g dw, respectively. ca ethanol extract exhibited scavenging acti ... | 2015 | 26785344 |
| horizontal transmission of "candidatus liberibacter solanacearum" by bactericera cockerelli (hemiptera: triozidae) on convolvulus and ipomoea (solanales: convolvulaceae). | "candidatus liberibacter solanacearum" (proteobacteria) is an important pathogen of solanaceous crops (solanales: solanaceae) in north america and new zealand, and is the putative causal agent of zebra chip disease of potato. this phloem-limited pathogen is transmitted to potato and other solanaceous plants by the potato psyllid, bactericera cockerelli (hemiptera: triozidae). while some plants in the convolvulaceae (solanales) are also known hosts for b. cockerelli, previous efforts to detect li ... | 2015 | 26555359 |
| genetic variability of stolbur phytoplasma in hyalesthes obsoletus (hemiptera: cixiidae) and its main host plants in vineyard agroecosystems. | bois noir is an economically important grapevine yellows that is induced by 'candidatus phytoplasma solani' and principally vectored by the planthopper hyalesthes obsoletus signoret (hemiptera: cixiidae). this study explores the 'ca. p. solani' genetic variability associated to the nettle-h. obsoletus and bindweed-h. obsoletus systems in vineyard agroecosystems of the central-eastern italy. molecular characterization of 'ca. p. solani' isolates was carried out using polymerase chain reaction/res ... | 2015 | 26470289 |
| conservation biological control in strawberry: effect of different pollen on development, survival, and reproduction of neoseiulus californicus (acari: phytoseiidae). | wild vegetation surrounding crops may provide temporary habitat and potential food sources for phytoseiids in different seasons. monthly vegetation samples of wild plants adjacent to strawberry plants and wild plants in a vegetation strip close to the crop were taken. the frequency of neoseiulus californicus, tetranychus urticae and other mites and insects was recorded. in addition, in a laboratory assay, the survival, developmental time and fecundity of females fed on pollen of strawberry and p ... | 2015 | 26459375 |
| eriophyoid mites (acari: prostigmata: eriophyoidea) from hungary: a new species on agrimonia eupatoria (rosaceae) and new record on convolvulus arvensis (convolvulaceae). | a new species of eriophyoid mite, aculus castriferrei n. sp., associated with agrimonia eupatoria (rosaceae) is described and illustrated from hungary. morphological differences distinguishing this vagrant species from other rosaceous inhabiting congeners are discussed. aceria malherbae nuzzaci is a new record for the eriophyoid fauna of hungary after it was found causing severe damage symptoms to convolvulus arvensis l. (convolvulaceae). | 2014 | 25543737 |
| molecular cloning and characterization of 5-enolpyruvylshikimate-3-phosphate synthase gene from convolvulus arvensis l. | 5-enolpyruvylshikimate-3-phosphate synthase (epsps), the target enzyme for glyphosate inhibition, catalyzes an essential step in the shikimate pathway for aromatic amino acid biosynthesis. the full-length cdna of 1,751 nucleotides (caepsps, genbank accession number: eu698030) from convolvulus arvensis was cloned and characterized. the caepsps encodes a polypeptide of 520 amino acids with a calculated molecular weight of 55.5 kda and an isoelectric point of 7.05. the results of homology analysis ... | 2014 | 24413996 |
| spectroscopic determination of the toxicity, absorption, reduction, and translocation of cr(vi) in two magnoliopsida species. | hexavalent chromium is a contaminant highly mobile in the environment that is toxic for plants at low concentrations. in this work, the physiological response of convolvulus arvensis and medicago truncatula plants to cr(vi) treatments was compared. c. arvensis is a potential cr hyperaccumulator well adapted to semiarid conditions that biotransform cr(vi) to the less toxic cr(iii). m. truncatula is a model plant well adapted to semiarid conditions with a well studied genetic response to heavy met ... | 2013 | 23487994 |
| determination of the genotoxic effects of convolvulus arvensis extracts on corn (zea mays l.) seeds. | in this research, the methanolic extracts of convolvulus arvensis were tested for genotoxic and inhibitor activity on the total soluble protein content and the genomic template stability against corn zea mays l. seed. the methanol extracts of leaf, stem and root of c. arvensis were diluted to 50, 75 and 100 μl concentrations and applied to corn seed. the total soluble protein and genomic template stability results were compared with the control. the results showed that especially 100 μl extracts ... | 2013 | 22362015 |
| identification and phenology of hyalesthes obsoletus (hemiptera: auchenorrhyncha: cixiidae) nymphal instars. | urtica dioica and convolvulus arvensis are the main host plants of hyalesthes obsoletus and play an important role in the epidemiology of bois noir of grapevines. the earliest survey, which was carried out to compare the phenology of nymphal instars on u. dioica and c. arvensis, had highlighted some problems in the identification of the instars. therefore, the correct identification of nymphs to species and instar level became a preliminary aim of this research. adults and nymphs attributable to ... | 2012 | 22360966 |
| 'candidatus phytoplasma convolvuli', a new phytoplasma taxon associated with bindweed yellows in four european countries. | plants of convolvulus arvensis exhibiting symptoms of undersized leaves, shoot proliferation and yellowing, collectively defined as bindweed yellows, were sampled in different regions of europe and assessed for phytoplasma infection by pcr amplification using phytoplasma universal rrna operon primer pairs. positive results were obtained for all diseased plants. rflp analysis of amplicons comprising the16s rrna gene alone or the16s rrna gene and 16-23s intergenic spacer region indicated that the ... | 2012 | 22247217 |
| comparative biochemical and immunological studies of the glycine betaine synthesis pathway in diverse families of dicotyledons. | members of the chenopodiaceae can accumulate high levels (>100 μmol·(g dw)(-1)) of glycine betaine (betaine) in leaves when salinized. chenopodiaceae synthesize betaine by a two-step oxidation of choline (choline→betaine aldehyde→ betaine), with the second step catalyzed by betaine aldehyde dehydrogenase (badh, ec 1.2.1.8). high betaine levels have also been reported in leaves of species from several distantly-related families of dicotyledons, raising the question of whether the same betaine-syn ... | 1989 | 24212901 |
| seasonal changes between one- and two-phasic response of plant leaves to heat stress. | plant leaves normally respond to increasing injurious temperatures with a more or less continuous increase of tissue damage. a discontinuous response comprising a first lethal or sublethal temperature range which is followed by a non-injurious temperature range and a second, the lethal temperature range appeared to be an exception. the data with populus deltoides x simonii show that a two-phasic response is most pronounced after heat shocks of 15 s and was no longer detected after exposure to he ... | 1977 | 28309148 |
| localization of glycosidases in the wall of living cells from cultured convolvulus arvensis tissue. | nine glycosidase activities were detected in isolated cell walls of cultured convolvulus arvensis l. cells. seven were also found in the cytoplasmic fraction. optimal ph values were all in the acid region. the in vivo localization of some of these glycosidases was studied by assaying whole cells. suspended cells hydrolysed the externally supplied substrates for α-galactosidase (ec 3.2.1.22), β-galactosidase (ec 3.2.1.23), β-glucosidase (ec 3.2.1.21), α-mannosidase (ec 3.2.1.24) and β-xylosidase ... | 1977 | 24420659 |
| phytochrome regulation of endogenous bud development in root cultures of convolvulus arvensis. | buds produced endogenously from dark-grown convolvulus root segments do not elongate more than a few millimeters. red-light exposures given repeatedly during the culture period induce the buds to elongate and to develop a morphology characteristic of etiolated shoots. far-red light exposure following each red exposure completely reverses the promotive effect of red light. the role of light in regulating both root geotropism and bud development is discussed as it relates to the developmental patt ... | 1972 | 24477306 |
| the role of phytochrome in the geotropic behavior of roots of convolvulus arvensis. | geotropic behavior in roots of convolvulus arvensis is influenced by both gravity and light. in darkness, the roots grow horizontally; exposure to light induces a positive orthogeotropic response. the response is elicited by red light of narrow band width and is reversed by a far-red-light treatment following the red exposure. phytochrome thus mediates this light response. experiments with microbeam irradiation suggest that this pigment is located in the root apex, probably in the root cap. stat ... | 1972 | 24477305 |
| chloroplast development in isolated roots of convolvulus arvensis (l.). | the fine structure of chloroplast development is described for isolated roots of convolvulus arvensis. stages in the transition from the leucoplast, characteristic of dark-grown roots, to the chloroplast, found in light-grown roots, are defined and related to chlorophyll content of the root tissue. the interdependence of tissue type and organellogenesis has been investigated for three tissues in the primary root: cortical parenchyma, pericycle and stelar parenchyma tissue. plastids in cells of a ... | 1970 | 24500124 |