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[carbon source utilization characteristics of soil microbial community for apple orchard with interplanting herbage].as soil fertility in apple orchard with clean tillage is declined continuously, interplanting herbage in orchard, which is a new orchard management model, plays an important role in improving orchard soil conditions. by using biolog micro-plate technique, this paper studied the functional diversity of soil microbial community under four species of management model in apple orchards, including clear tillage model, interplanting white clover model, interplanting small crown flower model and interp ...201526911017
complementarity among four highly productive grassland species depends on resource availability.positive species richness-productivity relationships are common in biodiversity experiments, but how resource availability modifies biodiversity effects in grass-legume mixtures composed of highly productive species is yet to be explicitly tested. we addressed this question by choosing two grasses (arrhenatherum elatius and dactylis glomerata) and two legumes (medicago × varia and onobrychis viciifolia) which are highly productive in monocultures and dominant in mixtures (the jena experiment). w ...201626932467
use of two grasses for the phytoremediation of aqueous solutions polluted with terbuthylazine.the capacity of two grasses, tall fescue (festuca arundinacea) and orchardgrass (dactylis glomerata), to remove terbuthylazine (tba) from polluted solutions has been assessed in hydroponic cultures. different tba concentrations (0.06, 0.31, 0.62, and 1.24 mg/l) were chosen to test the capacity of the two grasses to resist the chemical. aerial biomass, effective concentrations (to cause reductions of 10, 50, and 90% of plant aerial biomass) and chlorophylls contents of orchardgrass were found to ...201626934386
mitigation of ergot vasoconstriction by clover isoflavones in goats (capra hircus).ergot alkaloids produced by a fungal endophyte (epichloë coenophiala; formerly neotyphodium coenophialum) that infects tall fescue (lolium arundinaceum) can induce persistent constriction of the vasculature in ruminants, hindering their capability to thermo-regulate core body temperature. there is evidence that isoflavones produced by legumes can relax the vasculature, which suggests that they could relieve ergot alkaloid-induced vasoconstriction and mitigate the vulnerability to severe heat str ...201626973844
do drying and rewetting cycles modulate effects of sulfadiazine spiked manure in soil?naturally occurring drying-rewetting events in soil have been shown to affect the dissipation of veterinary antibiotics entering soil by manure fertilization. however, knowledge of effects on the soil microbial community structure and resistome is scarce. here, consequences of drying-rewetting cycles on effects of sulfadiazine (sdz) in soil planted with dactylis glomerata l. were investigated in microcosms. manure containing sdz or not was applied to the pregrown grass and incubated for 56 days ...201627053757
effect of starchy or fibrous carbohydrate supplementation of orchardgrass on ruminal fermentation and methane output in continuous culture.a 4-unit dual-flow continuous culture fermentor system was used to assess the effects of supplementing orchardgrass (dactylis glomerata l.) with 2 levels [5 and 10% of total dry matter (dm) fed] of starchy (barley grain, bar) or fibrous (beet pulp, bp) carbohydrate sources on nutrient digestibility, volatile fatty acid (vfa) production, bacterial protein synthesis, and ch4 output. treatments were randomly assigned to fermentors in a 4×4 latin square design with a 2×2 factorial arrangement using ...201627060824
aboveground insect herbivory increases plant competitive asymmetry, while belowground herbivory mitigates the effect.insect herbivores can shift the composition of a plant community, but the mechanism underlying such shifts remains largely unexplored. a possibility is that insects alter the competitive symmetry between plant species. the effect of herbivory on competition likely depends on whether the plants are subjected to aboveground or belowground herbivory or both, and also depends on soil nitrogen levels. it is unclear how these biotic and abiotic factors interactively affect competition. in a greenhouse ...201627069805
comparison of rapd, issr, and aflp molecular markers to reveal and classify orchardgrass (dactylis glomerata l.) germplasm variations.three different dna-based techniques, random amplified polymorphic dna (rapd), inter simple sequence repeat (issr) and amplified fragment length polymorphism (aflp) markers, were used for fingerprinting dactylis glomerata genotypes and for detecting genetic variation between the three different subspecies. in this study, rapd assays produced 97 bands, of which 40 were polymorphic (41.2%). the issr primers amplified 91 bands, and 54 showed polymorphism (59.3%). finally, the aflp showed 100 bands, ...201627070939
[about minimization of expenses on allergy diagnosis in children: analysis of consistency of in vitro- and in vivo-allergic examinations results].high morbidity rate of atopic diseases among children, including high importance of grass pollen as a sensitizing agent, determine the relevance ofstudies on diagnostic examination systems for appointment of adequate therapy. the research of the most relevant allergens for patients to excludeof duplicating and uninformative tests became urgent after development of a new type of diagnostic tests that does not require expensive equipment. the objective of this research was to evaluate the results ...201527093804
bacterial endophytes isolated from plants in natural oil seep soils with chronic hydrocarbon contamination.the bacterial endophytic communities of four plants growing abundantly in soils highly contaminated by hydrocarbons were analyzed through culturable and culture-independent means. given their tolerance to the high levels of petroleum contamination at our study site, we sought evidence that achillea millefolium, solidago canadensis, trifolium aureum, and dactylis glomerata support high levels of hydrocarbon degrading endophytes. a total of 190 isolates were isolated from four plant species. the i ...201627252685
the grass pollen season 2014 in vienna: a pilot study combining phenology, aerobiology and symptom data.grasses (poaceae) are one of the largest plant families and are distributed worldwide. grass pollen allergy is one of the most important pollen allergies affecting large parts of the population worldwide. the grass pollen season itself is special since it is caused by the flowering of various grass species that present unique profiles of allergenicity, which assumingly plays a significant role and impact on grass pollen sensitization profiles for the allergy sufferer. the aim of this study, cond ...201627317132
construction of high-density genetic linkage map and identification of flowering-time qtls in orchardgrass using ssrs and slaf-seq.orchardgrass (dactylis glomerata l.) is one of the most economically important perennial, cool-season forage species grown and pastured worldwide. high-density genetic linkage mapping is a valuable and effective method for exploring complex quantitative traits. in this study, we developed 447,177 markers based on slaf-seq and used them to perform a comparative genomics analysis. perennial ryegrass sequences were the most similar (5.02%) to orchardgrass sequences. a high-density linkage map of or ...201627389619
comparative performance of airyscan and structured illumination superresolution microscopy in the study of the surface texture and 3d shape of pollen.the visualization of taxonomically diagnostic features of individual pollen grains can be a challenge for many ecologically and phylogenetically important pollen types. the resolution of traditional optical microscopy is limited by the diffraction of light (250 nm), while high resolution tools such as electron microscopy are limited by laborious preparation and imaging workflows. airyscan confocal superresolution and structured illumination superresolution (sr-sim) microscopy are powerful new to ...201627476493
iranian johnsongrass mosaic virus: the complete genome sequence, molecular and biological characterization, and comparison of coat protein gene sequences.iranian johnsongrass mosaic virus (ijmv) is one of the most prevalent viruses causing maize mosaic disease in iran. an ijmv isolate, maz-bah, was obtained from the maize showing mosaic symptoms in mazandaran, north of iran. the complete genomic sequence of maz-bah is 9544 nucleotides, excluding the poly(a) tail. it contains one single open reading frame of 9165 nucleotides and encodes a large polyprotein of 3054 amino acids, flanked by a 5'-untranslated region (utr) of 143 nucleotides and a 3'-u ...201727632283
phylogenetic and diversity analysis of dactylis glomerata subspecies using ssr and it-isj markers.the genus dactylis, an important forage crop, has a wide geographical distribution in temperate regions. while this genus is thought to include a single species, dactylis glomerata, this species encompasses many subspecies whose relationships have not been fully characterized. in this study, the genetic diversity and phylogenetic relationships of nine representative dactylis subspecies were examined using ssr and it-isj markers. in total, 21 pairs of ssr primers and 15 pairs of it-isj primers we ...201627809251
effect of feeding warm-season annuals with orchardgrass on ruminal fermentation and methane output in continuous culture.a 4-unit, dual-flow continuous culture fermentor system was used to assess nutrient digestibility, volatile fatty acids (vfa) production, bacterial protein synthesis, and methane (ch4) output of warm-season annual grasses. treatments were randomly assigned to fermentors in a 4 × 4 latin square design using 7 d for adaptation to treatment and 3 d for sample collection. treatments were (1) 100% orchardgrass (dactylis glomerata l.; ord); (2) 50% orchardgrass + 50% japanese millet [echinochloa escul ...201727939544
using plant wax markers to estimate the diet composition of grazing holstein dairy cows.the objective of this study was to test whether diet selection of dairy cows under grazing conditions could be estimated using plant wax markers. furthermore, differences between 2 cow strains and the effect of concentrate supplementation on plant species selection were investigated. the experiment was a study with a crossover design performed on an organic farm with 12 swiss holstein cows and 12 new zealand holstein cows. both experimental periods consisted of a 21-d adaptation and a 7-d measur ...201727939548
p1-independent replication and local movement of rice yellow mottle virus in host and non-host plant species.sobemovirus p1 protein, characterized previously as a suppressor of posttranscriptional gene silencing, is required for systemic virus spread and infection in plants. mutations in the orf1 initiation codon do not affect viral replication indicating p1 is not necessary for this process. wild type, recombinant and p1 deletion mutants of cocksfoot mottle virus and rice yellow mottle virus were used to infect oat, rice, wheat, barley, arabidopsis thaliana and nicotiana benthamiana plants. wild type ...201727960111
proteome data on the microbial microbiome of grasshopper feces.we present proteome data from the microbiota (feces) after a diet shift from a natural diverse to a monocultural meadow with dactylis glomerata. the abundant grasshopper species, chorthippus dorsatus, was taken from the wild and kept in captivity and were fed with dactylis glomerata for five days. for phytophagous insects, the efficiency of utilization of hemicellulose and cellulose depends on the gut microbiota. shifts in environmental and management conditions alter the presence and abundance ...201627995170
responses of plasma glucose metabolism to exogenous insulin infusion in sheep-fed forage herb plantain and exposed to heat.the use of herbal plants as traditional medicines has a century long history. plantain (plantago lanceolata l.) is a perennial herb containing bioactive components with free radical scavenging activities. an isotope dilution technique using [u-13c]glucose was conducted to determine the effect of plantain on the responses of plasma glucose metabolism to exogenous insulin infusion in sheep. six crossbred sheep (three wethers and three ewes; mean initial bw=40±2 kg) were fed either a mixed hay of o ...201728091361
bacterial endophyte communities of three agricultural important grass species differ in their response towards management regimes.endophytic bacteria are critical for plant growth and health. however, compositional and functional responses of bacterial endophyte communities towards agricultural practices are still poorly understood. hence, we analyzed the influence of fertilizer application and mowing frequency on bacterial endophytes in three agriculturally important grass species. for this purpose, we examined bacterial endophytic communities in aerial plant parts of dactylis glomerata l., festuca rubra l., and lolium pe ...201728102323
water use efficiency and shoot biomass production under water limitation is negatively correlated to the discrimination against (13)c in the c3 grasses dactylis glomerata, festuca arundinacea and phalaris arundinacea.climate change impacts rainfall patterns which may lead to drought stress in rain-fed agricultural systems. crops with higher drought tolerance are required on marginal land with low precipitation or on soils with low water retention used for biomass production. it is essential to obtain plant breeding tools, which can identify genotypes with improved drought tolerance and water use efficiency (wue). in c3 plant species, the variation in discrimination against (13)c (δ(13)c) during photosynthesi ...201728152389
aflp assessment of genetic variability and relationships in an asian wild germplasm collection of dactylis glomerata l.orchardgrass (dactylis glomerata l.), an excellent perennial and cool season forage species distributed in most temperate regions, has been cultivated widely in western china. amplified fragment length polymorphism markers were employed to determine the genetic variability and population structure among 41 indigenous orchardgrass accessions from central asia and western china. on the basis of 531 polymorphic fragments resulted from eight primer combinations, polymorphic information content (pic) ...201728215522
genome-wide association study of rust traits in orchardgrass using slaf-seq technology.while orchardgrass (dactylis glomerata l.) is a well-known perennial forage species, rust diseases cause serious reductions in the yield and quality of orchardgrass; however, genetic mechanisms of rust resistance are not well understood in orchardgrass.201728250720
allergy to grass pollen: mapping of dactylis glomerata and phleum pratense allergens for dogs by two-dimensional immunoblotting.much less is known about grass-pollen allergens to dogs, when compared with humans. genetic-based patterns might play an important role in sensitization profiles, conditioning the success of allergen-specific immunotherapy.201728261033
effect of mixed hay supplementation during fattening on carcass traits and meat quality of hanwoo steers.this study was aim to observe the effects of feeding mixed local hay (mh) consisted of 55% orchard grass (dactylis glomerata l.), 35% tall fescue (festuca arundinacea) and 10% red clover (trifolium pratense) to hanwoo steers on performance, carcass characteristics and meat quality (longissimus thoracis) compared with feeding imported timothy hay (th) and local rice straw (rs).201728293430
long-term responsiveness to free air co2 enrichment of functional types, species and genotypes of plants from fertile permanent grassland.to test inter- and intraspecific variability in the responsiveness to elevated co2, 9-14 different genotypes of each of 12 perennial species from fertile permanent grassland were grown in lolium perenne swards under ambient (35 pa) and elevated (60 pa) atmospheric partial pressure of co2 (pco2) for 3 years in a free air carbon dioxide enrichment (face) experiment. the plant species were grouped according to their functional types: grasses (l. perenne, l. multiflorum, arrhenatherum elatius, dacty ...199728307292
an investigation of the differential performance of clones of the aphid sitobion avenae on two host species.individuals of the grain aphid sitobion avenae were collected from wheat and cocksfoot stands around hampshire, uk, during march and april 1994. eight wheat and eight cocksfoot aphid clones were chosen on the basis of readily distinguishable rapd-pcr fingerprint profiles. the performances (weight, fecundity and survival) of successive generations of each of these clones were then carefully monitored in the laboratory as new generations of aphids were transferred either to winter wheat or to cock ...199528307595
dry matter allocation and nitrogen productivity explain growth responses to photoperiod and temperature in forage grasses.the mechanisms responsible for fluctuations in species composition of semi-natural grassland are not well understood. to identify plant traits that determine the poor competitive ability of festuca pratensis compared to dactylis glomerata especially during summer, the growth of both grasses was monitored over time and at different temperatures and photoperiods. plants of both grasses were grown from seed with non-limiting nutrient supply at three day/night temperatures (11/6, 18/13 and 25/20°c) ...199928308353
ecological energetics of central european grasshoppers (orthoptera: acrididae).biomass and energy budgets and food utilization efficiencies of laboratory and wild populations of three central european grasshopper species, chorthippus parallelus (zetterstedt), c. biguttulus (l.), and gomphocerus rufus (l.), were studied between 1979 and 1984. larval consumption is relatively low in c. biguttulus (c=4.3 kj/ind.) compared with c. parallelus and g. rufus (4.9 kj/ind.). in the adult phase (maturity) consumption rates of c. biguttulus and g. rufus (6.9 kj/ind.) are similar, but ...198728310423
rooting pattern and water relations of three pasture grasses growing in drying soil.seedlings of perennial ryegrass (lolium perenne l. s23), cocksfoot (dactylis glomerata l. s37) and timothy (phleum pratense l. s48) were rooted into tubes of soil and plants were either watered well or remained unwatered for a period of seven days. measurements were made of root water relations and of growth of roots and shoots. root turgor of dactylis was larger than that of lolium and phleum. as a result of accumulation of solutes, turgor of dactylis and lolium was maintained as the soil dried ...198328310581
polyploidy and habitat differentiation in dactylis glomerata l. from galicia (spain).the microdistribution of diploid and tetraploid plants of dactylis glomerata l. was examined and related to their immediate environment in several sites in central galicia, where morphologically indistinguishable individuals of both ploidies grow in sympatry. the two related cytotypes differed in habitat preference. diploids were mainly confined to the low-density forest-floor habitat in woodlands of mostly ancient origin, whereas tetraploids were widespread in varied habitats but clearly predom ...198728311527
 leptopterna dolobrata (l.) (holarctis) and calocoris roseomaculatus (de geer) (palaearctis) are single-brooded in the whole range of their distribution and hibernate in the egg stage. both species are active only for 21/2 months, while the egg stage lasts over 9 months.the main food plants of leptopterna are dactylis glomerata and alopecurus pratensis. whereas the instars i-iii feed on the ears of the grasses only, the later stages, including the adults, may change to the stems and leaves. in th ...197128311800
flock size and habitat-dependent food and energy intake of foraging goldfinches.during the breeding season goldfinches (carduelis carduelis l.) feed on milky ripe seeds of about 20 food plants. individual goldfinches joining a flock reduce the time spent vigilant with increasing flock size. therefore birds feeding in flocks get an increased intake of kernels per time unit. this was measured for five different food plants (dactylis glomerata (gramineae), knautia arvensis (dipsacaceae), senecio vulgaris, taraxacum officinale, tragopogon pratensis (compositae)). in large-sized ...198628312098
the effects of plant nutritional strategy on soil microbial denitrification activity through rhizosphere primary metabolites.the aim of this study was to determine (i) whether plant nutritional strategy affects the composition of primary metabolites exuded into the rhizosphere and (ii) their impact on denitrification activity in soil. we answer this question by analysing primary metabolite contents extracted from the root-adhering soil (ras) and the roots of three grasses representing different nutrient management strategies: conservative (festuca paniculata), intermediate (bromus erectus) and exploitative (dactylis g ...201728334144
dynamics of runoff and sediment trapping performance of vegetative filter strips: run-on experiments and modeling.vegetative filter strips (vfss) are a labor-saving and cost-effective agricultural best management practice to trap water runoff and sediment from the source areas. they also provide forage and/or fuel and are therefore potentially profitable for land owners. vfss are however a dynamic system: the runoff delivery ratio (rdr) and sediment delivery ratio (sdr) vary with growth stage and vegetation types. the impacts of vegetation characteristics as well as soil physical properties modified by vege ...201728342418
tracing the fate and transport of secondary plant metabolites in a laboratory mesocosm experiment by employing mass spectrometric imaging.mass spectrometric imaging (msi) has received considerable attention in recent years, since it allows the molecular mapping of various compound classes, such as proteins, peptides, glycans, secondary metabolites, lipids, and drugs in animal, human, or plant tissue sections. in the present study, the application of laser-based msi analysis of secondary plant metabolites to monitor their transport from the grass leaves of dactylis glomerata, over the crop of the grasshopper chorthippus dorsatus to ...201728357483
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