Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| coevolution of pierid butterflies and their cruciferous foodplants iv. crucifer apparency and anthocharis cardamines (l.) oviposition. | the oviposition behaviour of the butterfly anthocharis cardamines has been examined, using the methods of strong inference to investigate foodplant choice. adaptive explanations for females ovipositing mainly on unshaded, young and large individuals of alliaria petiolata are rejected in favour of explanations based on 'apparency' to searching females. floral characters shown to influence intraspecific foodplant apparency are then examined in comparisons between crucifer species, and are shown to ... | 1982 | 28310517 |
| the genome sequence of barbarea vulgaris facilitates the study of ecological biochemistry. | the genus barbarea has emerged as a model for evolution and ecology of plant defense compounds, due to its unusual glucosinolate profile and production of saponins, unique to the brassicaceae. one species, b. vulgaris, includes two 'types', g-type and p-type that differ in trichome density, and their glucosinolate and saponin profiles. a key difference is the stereochemistry of hydroxylation of their common phenethylglucosinolate backbone, leading to epimeric glucobarbarins. here we report a dra ... | 2017 | 28094805 |
| screening for triterpenoid saponins in plants using hyphenated analytical platforms. | recently the number of studies investigating triterpenoid saponins has drastically increased due to their diverse and potentially attractive biological activities. currently the literature contains chemical structures of few hundreds of triterpenoid saponins of plant and animal origin. triterpenoid saponins consist of a triterpene aglycone with one or more sugar moieties attached to it. however, due to similar physico-chemical properties, isolation and identification of a large diversity of trit ... | 2016 | 27886152 |
| glucosinolate diversity within a phylogenetic framework of the tribe cardamineae (brassicaceae) unraveled with hplc-ms/ms and nmr-based analytical distinction of 70 desulfoglucosinolates. | as a basis for future investigations of evolutionary trajectories and biosynthetic mechanisms underlying variations in glucosinolate structures, we screened members of the crucifer tribe cardamineae by hplc-ms/ms, isolated and identified glucosinolates by nmr, searched the literature for previous data for the tribe, and collected hplc-ms/ms data for nearly all glucosinolates known from the tribe as well as some related structures (70 in total). this is a considerable proportion of the approximat ... | 2016 | 27743600 |
| the effect of injury on whole-plant senescence: an experiment with two root-sprouting barbarea species. | senescence is the process of losing fitness when growing old, and is shaped by the trade-off between maintenance and reproduction that makes reproduction more unsure and maintenance more costly with age. in repeatedly reproducing plants, reductions in growth and fertility are signs of senescence. disturbance, however, provides an opportunity to reset the ageing clock and consequently potentially ameliorate senescence. | 2016 | 26975314 |
| aromatic glucosinolate biosynthesis pathway in barbarea vulgaris and its response to plutella xylostella infestation. | the inducibility of the glucosinolate resistance mechanism is an energy-saving strategy for plants, but whether induction would still be triggered by glucosinolate-tolerant plutella xylostella (diamondback moth, dbm) after a plant had evolved a new resistance mechanism (e.g., saponins in barbara vulgaris) was unknown. in b. vulgaris, aromatic glucosinolates derived from homo-phenylalanine are the dominant glucosinolates, but their biosynthesis pathway was unclear. in this study, we used g-type ( ... | 2016 | 26904055 |
| enforced clonality confers a fitness advantage. | in largely clonal plants, splitting of a maternal plant into potentially independent plants (ramets) is usually spontaneous; however, such fragmentation also occurs in otherwise non-clonal species due to application of external force. this process might play an important yet largely overlooked role for otherwise non-clonal plants by providing a mechanism to regenerate after disturbance. here, in a 5-year garden experiment on two short-lived, otherwise non-clonal species, barbarea vulgaris and ba ... | 2016 | 26858732 |
| diamondback moth (lepidoptera: plutellidae) exhibits oviposition and larval feeding preferences among crops, wild plants, and ornamentals as host plants. | diamondback moth, plutella xylostella (l.) (lepidoptera: plutellidae), is an agricultural pest with high reproductive potential, widespread distribution, and high resistance to different types of insecticides. although diamondback moth is a common research subject, questions remain regarding its spatial and temporal host plant usage patterns and preferences within agroecosystems. we examined the adult oviposition and larval feeding preferences of the diamondback moth to assess the potential of a ... | 2016 | 26834144 |
| identification and genome organization of saponin pathway genes from a wild crucifer, and their use for transient production of saponins in nicotiana benthamiana. | the ability to evolve novel metabolites has been instrumental for the defence of plants against antagonists. a few species in the barbarea genus are the only crucifers known to produce saponins, some of which make plants resistant to specialist herbivores, like plutella xylostella, the diamondback moth. genetic mapping in barbarea vulgaris revealed that genes for saponin biosynthesis are not clustered but are located in different linkage groups. using co-location with quantitative trait loci (qt ... | 2015 | 26333142 |
| expanding the nasturlexin family: nasturlexins c and d and their sulfoxides are phytoalexins of the crucifers barbarea vulgaris and b. verna. | the metabolites produced in leaves of the crucifers winter cress (barbarea vulgaris) and upland cress (barbarea verna) abiotically elicited were investigated and their chemical structures were elucidated by analyses of spectroscopic data and confirmed by syntheses. nasturlexins c and d and their sulfoxides are cruciferous phytoalexins displaying antifungal activity against the crucifer pathogens alternaria brassicicola, leptosphaeria maculans and sclerotinia sclerotiorum. the biosynthesis of the ... | 2015 | 26318326 |
| expression patterns, molecular markers and genetic diversity of insect-susceptible and resistant barbarea genotypes by comparative transcriptome analysis. | barbarea vulgaris contains two genotypes: the glabrous type (g-type), which confers resistance to the diamondback moth (dbm) and other insect pests, and the pubescent type (p-type), which is susceptible to the dbm. herein, the transcriptomes of p-type b. vulgaris before and after dbm infestation were subjected to illumina (solexa) pyrosequencing and comparative analysis. | 2015 | 26126637 |
| habitat complexity reduces parasitoid foraging efficiency, but does not prevent orientation towards learned host plant odours. | it is well known that many parasitic wasps use herbivore-induced plant odours (hipvs) to locate their inconspicuous host insects, and are often able to distinguish between slight differences in plant odour composition. however, few studies have examined parasitoid foraging behaviour under (semi-)field conditions. in nature, food plants of parasitoid hosts are often embedded in non-host-plant assemblages that confer both structural and chemical complexity. by releasing both naïve and experienced ... | 2015 | 26001606 |
| herbivory and relative growth rates of pieris rapae are correlated with host constitutive salicylic acid and flowering time. | treatment of plants with exogenous salicylic acid (sa) improves resistance to many bacterial pathogens, but can suppress resistance to insect herbivores. while plants vary naturally in constitutive sa, whether such differences are predictive of resistance to insect herbivores has not been studied previously. we examined the possible role of this endogenous sa in structuring the interactions between the cabbage white butterfly, pieris rapae, and ten hosts in the mustard family (brassicaceae). bec ... | 2015 | 25893789 |
| glucosinolate hydrolysis products in the crucifer barbarea vulgaris include a thiazolidine-2-one from a specific phenolic isomer as well as oxazolidine-2-thiones. | two isomeric phenolic glucosinolates, m- and p-hydroxyl derivatives of epiglucobarbarin [(r)-2-hydroxy-2-phenylethylglucosinolate], co-occur in an eastern chemotype (p-type) of the crucifer barbarea vulgaris along with epiglucobarbarin itself. levels of the phenolic derivatives in b. vulgaris were low in summer but higher during fall and winter, allowing isolation of all three glucosinolates. hydrolysis in vitro, catalyzed by sinapis alba myrosinase at near neutral ph, resulted in expectable oxa ... | 2015 | 25467719 |
| interactive impacts of a herbivore and a pathogen on two resistance types of barbarea vulgaris (brassicaceae). | it is well known that pathogens and arthropod herbivores attacking the same host plant may affect each other. little is known, however, about their combined impact on plant fitness, which may differ from simple additive expectations. in a 2-year common garden field experiment, we tested whether the pathogen albugo sp. (white blister rust) and the herbivorous flea beetle phyllotreta nemorum affected each other's performance on two resistance types (g-type and p-type) of the crucifer barbarea vulg ... | 2015 | 25380645 |
| multiple hydroxyphenethyl glucosinolate isomers and their tandem mass spectrometric distinction in a geographically structured polymorphism in the crucifer barbarea vulgaris. | two distinct glucosinolate (gsl) chemotypes (p and g-types) of barbarea vulgaris (brassicaceae) were known from southern scandinavia, but whether the types were consistent in a wider geographic area was not known. populations (26) from eastern and central europe were analyzed for gsls in order to investigate whether the two types were consistent in this area. most (21) could be attributed to one of the previously described gsl profile types, the p-type (13 populations) and the g-type (8 populati ... | 2015 | 25277803 |
| different geographical distributions of two chemotypes of barbarea vulgaris that differ in resistance to insects and a pathogen. | the interactions of plants with herbivores and pathogens have been suggested to drive the evolution of resistances in plants and in some cases new lineages and taxa. however, such divergence may require reproductive isolation, e.g., in allopatry. in the crucifer barbarea vulgaris, some plants are resistant to the flea beetle phyllotreta nemorum, due to production of specific saponins, whereas others are susceptible. resistant and susceptible plants additionally differ in resistance to the pathog ... | 2014 | 24777484 |
| consequences of combined herbivore feeding and pathogen infection for fitness of barbarea vulgaris plants. | plants are often attacked by pathogens and insects. their combined impact on plant performance and fitness depends on complicated three-way interactions and the plant's ability to compensate for resource losses. here, we evaluate the response of barbarea vulgaris, a wild crucifer, to combined attack by an oomycete albugo sp., a plant pathogen causing white rust, and a flea beetle, phyllotreta nemorum. plants from two b. vulgaris types that differ in resistance to p. nemorum were exposed to albug ... | 2014 | 24687328 |
| phylogeny of an albugo sp. infecting barbarea vulgaris in denmark and its frequency of symptom development in natural populations of two evolutionary divergent plant types. | the oomycete albugo candida has long been considered a broad spectrum generalist pathogen, but recent studies suggest that it is diverged into several more specialized species in addition to the generalist albugo candida sensu stricto. whereas these species cause the disease white blister rust in many crucifer plants, asymptomatic endophytic infections may be important in the epidemiology of others. one of the plant species attacked by albugo sp. is the wild crucifer barbarea vulgaris ssp. arcua ... | 2014 | 24607358 |
| acylated glucosinolates with diverse acyl groups investigated by high resolution mass spectrometry and infrared multiphoton dissociation. | with the aim of developing a procedure for detecting and identifying intact acylated glucosinolates (a-glss) found in trace quantities in natural plant samples, extracts of barbarea vulgaris seeds were analyzed by reversed-phase liquid chromatography coupled with electrospray ionization and fourier-transform ion cyclotron resonance mass spectrometry (rplc-esi fticr ms). after a preliminary optimization of fragmentation conditions, based on a non-acylated parent glucosinolate (glucobarbarin) and ... | 2014 | 24512839 |
| using plant chemistry and insect preference to study the potential of barbarea (brassicaceae) as a dead-end trap crop for diamondback moth (lepidoptera: plutellidae). | barbarea vulgaris r. br. has been proposed as a dead-end trap crop for diamondback moth, plutella xylostella l. (lepidoptera: plutellidae), because its larvae do not survive on this plant species despite being highly preferred for oviposition. we compared plants of several species, varieties, and types in the genus barbarea (brassicaceae) to study their potential as trap crops for p. xylostella. in terms of insect behavior, barbarea plants were assessed based on the criteria of high oviposition ... | 2014 | 24342111 |
| intertribal somatic hybrids between brassica napus and barbarea vulgaris - production of in vitro plantlets. | intertribal somatic hybrids were produced between brassica napus and barbarea vulgaris. the two species belong to the tribes arabidae and brassiceae, respectively, b. vulgaris is known to be cold tolerant and of interest to use as a gene donor to rapeseed. of the plants produced in five fusion experiments six plants were verified to be hybrids by rflp analysis utilizing one b. vulgaris-specific repetitive dna sequence and two nuclear probes (rdna and cruciferin) as markers. when analysing nuclea ... | 1994 | 24193913 |
| transcriptome analysis of barbarea vulgaris infested with diamondback moth (plutella xylostella) larvae. | the diamondback moth (dbm, plutella xylostella) is a crucifer-specific pest that causes significant crop losses worldwide. barbarea vulgaris (brassicaceae) can resist dbm and other herbivorous insects by producing feeding-deterrent triterpenoid saponins. plant breeders have long aimed to transfer this insect resistance to other crops. however, a lack of knowledge on the biosynthetic pathways and regulatory networks of these insecticidal saponins has hindered their practical application. a pyrose ... | 2013 | 23696897 |
| plant metabolomics: resolution and quantification of elusive peaks in liquid chromatography-mass spectrometry profiles of complex plant extracts using multi-way decomposition methods. | previous studies on lc-ms metabolomic profiling of 127 f2 barbarea vulgaris plants derived from a cross of parental glabrous (g) and pubescent (p) type, revealed four triterpenoid saponins (hederagenin cellobioside, oleanolic acid cellobioside, epihederagenin cellobioside, and gypsogenin cellobioside) that correlated with resistance of plants against the insect herbivore, phyllotreta nemorum. in this study, for the first time, we demonstrate the efficiency of the multi-way decomposition method p ... | 2012 | 23107118 |
| udp-glycosyltransferases from the ugt73c subfamily in barbarea vulgaris catalyze sapogenin 3-o-glucosylation in saponin-mediated insect resistance. | triterpenoid saponins are bioactive metabolites that have evolved recurrently in plants, presumably for defense. their biosynthesis is poorly understood, as is the relationship between bioactivity and structure. barbarea vulgaris is the only crucifer known to produce saponins. hederagenin and oleanolic acid cellobioside make some b. vulgaris plants resistant to important insect pests, while other, susceptible plants produce different saponins. resistance could be caused by glucosylation of the s ... | 2012 | 23027665 |
| glucosinolate structures in evolution. | by 2000, around 106 natural glucosinolates (gsls) were probably documented. in the past decade, 26 additional natural gsl structures have been elucidated and documented. hence, the total number of documented gsls from nature by 2011 can be estimated to around 132. a considerable number of additional suggested structures are concluded not to be sufficiently documented. in many cases, nmr spectroscopy would have provided the missing structural information. of the gsls documented in the past decade ... | 2012 | 22405332 |
| three new phylogenetic lineages are the closest relatives of the widespread species albugo candida. | white blister rust caused by the obligate biotroph albugo candida (albuginaceae; oomycota) is one of the most notorious and common diseases of brassicaceae. during the past 5 y, a. candida specimens collected from about 30 host genera were phylogenetically and morphologically investigated in several studies. these not only revealed that a. candida s.str. has a broad host range, encompassing a large number of host plants belonging to brassicales, but also the presence of previously overlooked spe ... | 2011 | 21724165 |
| polymorphism for novel tetraglycosylated flavonols in an eco-model crucifer, barbarea vulgaris. | nineteen apparent flavonoids were determined by hplc-dad in foliage of a chemotype (g-type) of barbarea vulgaris , and four were isolated. two were novel tetraglycosylated flavonols with identical glycosylation patterns, kaempferol 3-o-(2,6-di-o-β-d-glucopyranosyl)-β-d-glucopyranoside-7-o-α-l-rhamnopyranoside (1) and quercetin 3-o-(2,6-di-o-β-d-glucopyranosyl)-β-d-glucopyranoside-7-o-α-l-rhamnopyranoside (2). the identification of d/l configuration was tentatively based on susceptibility to α-l- ... | 2011 | 21615154 |
| barbarea vulgaris linkage map and quantitative trait loci for saponins, glucosinolates, hairiness and resistance to the herbivore phyllotreta nemorum. | combined genomics and metabolomics approaches were used to unravel molecular mechanisms behind interactions between winter cress (barbarea vulgaris) and flea beetle (phyllotreta nemorum). b. vulgaris comprises two morphologically, biochemically and cytologically deviating types, which differ in flea beetle resistance, saponin and glucosinolate profiles, as well as leaf pubescence. an f2 population generated from a cross between the two b. vulgaris types was used to construct a b. vulgaris geneti ... | 2011 | 21130479 |
| phylloplane location of glucosinolates in barbarea spp. (brassicaceae) and misleading assessment of host suitability by a specialist herbivore. | glucosinolates are plant secondary metabolites used in host plant recognition by insects specialized on brassicaceae, such as the diamondback moth (dbm), plutella xylostella. their perception as oviposition cues by females would seem to require their occurrence on the leaf surface, yet previous studies have reached opposite conclusions about whether glucosinolates are actually present on the surface of crucifer leaves. dbm oviposits extensively on barbarea vulgaris, despite its larvae not being ... | 2011 | 21029103 |
| genetic and sexual separation between insect resistant and susceptible barbarea vulgaris plants in denmark. | co-evolution between herbivores and plants is believed to be one of the processes creating earth's biodiversity. however, it is difficult to disentangle to what extent diversification is really driven by herbivores or by other historical-geographical processes like allopatric isolation. in the cruciferous plant barbarea vulgaris, some danish individuals are resistant to herbivory by flea beetles (phyllotreta nemorum), whereas others are not. the flea beetles are, in parallel, either resistant or ... | 2010 | 20670365 |
| can sulfur fertilisation improve the effectiveness of trap crops for diamondback moth, plutella xylostella (l.) (lepidoptera: plutellidae)? | the effect of sulfur fertilisation on chemical constituents of yellow rocket, barbarea vulgaris (r. br.), was studied with regard to its potential use as a trap crop for the diamondback moth, plutella xylostella (l.) (lepidoptera: plutellidae). two types of b. vulgaris var. arcuata were used: the g-type, resistant to p. xylostella and proposed as a 'dead-end' trap crop, and the p-type, not resistant to p. xylostella and used as a control. | 2010 | 20603876 |
| new resistance-correlated saponins from the insect-resistant crucifer barbarea vulgaris. | isolation and characterization of plant constituents responsible for insect resistance are of the utmost importance for better understanding of insect-host plant interactions, for selection and breeding of resistant plant varieties, and for development of natural insecticides to be used in future sustainable agriculture and food production. in this study, 3-o-cellobiosyl-cochalic acid (1), 3-o-cellobiosyl-gypsogenin (3), and 3-o-cellobiosyl-4-epihederagenin (4) were isolated from the glabrous ty ... | 2010 | 20387830 |
| resistance in the plant, barbarea vulgaris, and counter-adaptations in flea beetles mediated by saponins. | three saponins and two sapogenins had differential effects on food consumption in five near-isogenic flea beetle lines, which differ in their ability to utilize a novel host plant, barbarea vulgaris (brassicaceae). the ability to live on this plant is controlled by major, dominant r-genes in the flea beetle, phyllotreta nemorum (coleoptera: chrysomelidae: alticinae). a susceptible genotype (rr) is unable to live on the plant, whereas resistant genotypes (rr and rr) can utilize the novel host pla ... | 2010 | 20177743 |
| vermicompost derived from different feedstocks as a plant growth medium. | this study determined feedstock effects on earthworm populations and the quality of resulting vermicomposts produced from different types of feedstocks using different vermicomposting durations. feedstock combinations (kitchen paper waste (kpw), kitchen yard waste (kyw), cattle manure yard waste (cmy)), three durations of vermicomposting (45, 68 or 90 days), and two seed germination methods (with two concentrations of vermicompost) for radish, marigold and upland cress, served as the independent ... | 2010 | 20153632 |
| genetic differentiation between resistance phenotypes in the phytophagous flea beetle, phyllotreta nemorum. | the flea beetle phyllotreta nemorum l. (coleoptera: chrysomelidae) is genetically polymorphic for resistance against the defences of one of its host plants, barbarea vulgaris r.br. (brassicales: brassicaceae). whereas resistant flea beetles are able to use b. vulgaris as well as other cruciferous plants as food, non-resistant beetles cannot survive on b. vulgaris. this limitation to host plant use of non-resistant beetles could potentially lead to asymmetric gene flow and some degree of genetic ... | 2009 | 20053124 |
| identification of defense compounds in barbarea vulgaris against the herbivore phyllotreta nemorum by an ecometabolomic approach. | winter cress (barbarea vulgaris) is resistant to a range of insect species. some b. vulgaris genotypes are resistant, whereas others are susceptible, to herbivory by flea beetle larvae (phyllotreta nemorum). metabolites involved in resistance to herbivory by flea beetles were identified using an ecometabolomic approach. an f2 population representing the whole range from full susceptibility to full resistance to flea beetle larvae was generated by a cross between a susceptible and a resistant b. ... | 2009 | 19819983 |
| barbarea vulgaris glucosinolate phenotypes differentially affect performance and preference of two different species of lepidopteran herbivores. | the composition of secondary metabolites and the nutritional value of a plant both determine herbivore preference and performance. the genetically determined glucosinolate pattern of barbarea vulgaris can be dominated by either glucobarbarin (bar-type) or by gluconasturtiin (nas-type). because of the structural differences, these glucosinolates may have different effects on herbivores. we compared the two barbarea chemotypes with regards to the preference and performance of two lepidopteran herb ... | 2008 | 18213497 |
| aflp markers for the r-gene in the flea beetle, phyllotreta nemorum, conferring resistance to defenses in barbarea vulgaris. | a so-called r-gene renders the yellow-striped flea beetle phyllotreta nemorum l. (coleoptera: chrysomelidae: alticinae) resistant to the defenses of the yellow rocket barbarea vulgaris r.br. (brassicacea) and enables it to use it as a host plant in denmark. in this study, genetic markers for an autosomal r-gene, inherited as a single, dominant locus in flea beetles from the danish locality "kvaerkeby" are described, and a genetic linkage map around this particular r-gene is constructed, using th ... | 2005 | 17119620 |
| a heritable glucosinolate polymorphism within natural populations of barbarea vulgaris. | in natural populations of barbarea vulgaris we found two distinctly different glucosinolate profiles. the most common glucosinolate profile is dominated (94%) by the hydroxylated form, (s)-2-hydroxy-2-phenylethyl-glucosinolate (glucobarbarin, bar-type), whereas in the other type 2-phenylethyl-glucosinolate (gluconasturtiin, nas-type) was most prominent (82%). nas-type plants have a 108-fold increase of gluconasturtiin concentration in rosette leaves compared to bar-type plants. the glucosinolate ... | 2006 | 16777152 |
| variation in germination and amino acid leakage of seeds with temperature related to membrane phase change. | leakages of amino acids and/or fluorescent material as functions of temperature between 15 and 40 c are reported for imbibed seeds of avena fatua l., lactuca sativa l., barbarea vulgaris r. br., amaranthus albus l., abutilon theophrasti medic., lychnis alba mill., daucus carota l., setaria faberi herrm., setaria viridis (l.) beauv., and datura stramonium l. the leakage indicates prominent increase in permeability of the plasmalemma in the 30 to 35 c range for 8 of the 10 kinds of seeds studied. ... | 1976 | 16659623 |
| promotion of seed germination by nitrate, nitrite, hydroxylamine, and ammonium salts. | action and uptake of azides, nitrates, nitrites, hydroxylamines, and ammonium salts were measured on germination of amaranthus albus, lactuca sativa, phleum pratense, barbarea vulgaris, b. verna, and setaria glauca seeds. nitrate and nitrite reductase activities were measured in vivo for each of these kinds of seeds. activities were measured in vitro for catalase, peroxidase, glycolate oxidase, and pyridine nucleotide quinone reductase on extracts of a. albus and l. sativa seeds before and after ... | 1974 | 16658878 |
| interactions of light and a temperature shift on seed germination. | germination of rumex obtusifolius l. seeds is potentiated to an observable degree in 2 minutes by a single shift in temperature from 20 to 35 c. half-maximal potentiation requires less than 32 minutes at the higher temperature. similar sensitivities to shifts in temperature were observed for seeds of barbarea vulgaris, r.br. b. verna (mill.) asch., and lepidium virginicum l. a shift in temperature interacts strongly with change in form of phytochrome induced by light on germination of the four k ... | 1972 | 16657910 |
| using yellow rocket as a trap crop for diamondback moth (lepidoptera: plutellidae). | yellow rocket, barbarea vulgaris (r. br.) variety arcuata, was evaluated as a trap crop for diamondback moth, plutella xylostella (l.) (lepidoptera: plutellidae), in cabbage, brassica oleracea l. variety capitata, in 2003 and 2004. in 2003, the numbers of p. xylostella larvae found in field plots of cabbage alone were 5.2-11.3 times higher than those on cabbage plants in plots that included cabbage and several rows of yellow rocket. in an outdoor experiment in screenhouses, p. xylostella oviposi ... | 2005 | 16022317 |
| manipulating the attractiveness and suitability of hosts for diamondback moth (lepidoptera: plutellidae). | ovipositional preference and larval survival of the diamondback moth, plutella xylostella (l.), were compared among cabbage, brassica oleracea l. variety capitata; glossy collards, brassica oleracea l. variety acephala; and yellow rocket, barbarea vulgaris (r. br.) variety arcuata in different treatments of planting density, host plant age, intercropping, and water stress in 2003 and 2004. p. xylostella laid nearly twice as many eggs per plant in the high planting densities of glossy collards an ... | 2005 | 16022312 |
| laboratory evaluations of a wild crucifer barbarea vulgaris as a management tool for the diamondback moth plutella xylostella (lepidoptera: plutellidae). | the term 'dead-end trap cropping' has recently been proposed to identify a plant that is highly attractive for oviposition by an insect pest, but on which offspring of the pest cannot survive. the potential of the wild crucifer barbarea vulgaris r. br. to allure and serve as a dead-end trap crop for the diamondback moth plutella xylostella (l.), an important pest of cruciferous crops worldwide, was examined in laboratory experiments. when p. xylostella adults were provided with a dual-choice of ... | 2004 | 15541190 |
| evaluating trap crops for diamondback moth, plutella xylostella (lepidoptera: plutellidae). | potential trap crops for the diamondback moth, plutella xylostella (l.) (lepidoptera: plutellidae), were evaluated through a series of ovipositional preference and larval survival experiments in outdoor screenhouses in 2002 and 2003. hosts examined as trap crops were glossy and waxy collards, brassica oleracea l. variety acephala; indian mustard, brassica juncea (l.) czern; and yellow rocket, barbarea vulgaris (r. br.) variety arcuata. more eggs were laid on the potential trap crops, with the ex ... | 2004 | 15384349 |
| [antibiotics effects of barbarea vulgaris extracts on mycobacterium tuberculosis]. | 1952 | 13018963 | |
| a saponin correlated with variable resistance of barbarea vulgaris to the diamondback moth plutella xylostella. | two types of barbarea vulgaris var. arcuata, the g-type and the p-type, differed in resistance to larvae of the diamondback moth (dbm) platella xylostella. rosette plants of the g-type were fully resistant to the dbm when grown in a greenhouse or collected in the summer season, but leaves collected during the late fall were less resistant, as previously found for flea beetle resistance. the p-type was always susceptible. extracts of resistant leaflets inhibited larval growth in a bioassay, and a ... | 2003 | 12918925 |
| data on the host plant selection of the horseradish flea beetle, phyllotreta armoraciae (koch, 1803) (coleoptera, chrysomelidae, alticinae). | crucifer feeding specialists within the chrysomelidae family can be found mainly in the subfamilies of chrysomelinae and alticinae. nearly all the species of phyllotreta within alticinae feed on crucifers or related genera of resedaceae and capparaceae. oligophagy is a characteristic feature of phyllotreta species but some species are monophagous. under natural conditions phyllotreta armoraciae (koch, 1803) is considered as a monophagous species feeding only on horseradish (armoracia lapathifoli ... | 2001 | 12425048 |
| identification of a triterpenoid saponin from a crucifer, barbarea vulgaris, as a feeding deterrent to the diamondback moth, plutella xylostella. | larvae of the diamondback moth, plutella xylostella, a crucifer specialist, refuse to feed on a crucifer, barbarea vulgaris, because of the presence of a feeding deterrent, which is extractable with chloroform. we isolated a feeding deterrent from b. vulgaris leaves, by successive fractionations with silica-gel, ods, i.e., c18 reversed phase, and sephadex lh-20 column chromatographies, and ods-hplc, guided by a bioassay for feeding deterrent activity. the structure of the compound was determined ... | 2002 | 11944835 |
| seasonal variation in leaf glucosinolates and insect resistance in two types of barbarea vulgaris ssp. arcuata. | leaves from natural populations of barbarea vulgaris ssp. arcuata (brassicaceae) in denmark were examined for glucosinolate content and resistance to the crucifer specialist flea beetle phyllotreta nemorum. two types of the plant (p- and g-type) could be recognized. leaves of the g-type contained the glucosinolates (only side chains mentioned): (s)-2-hydroxy-2-phenylethyl- (2s), indol-3-ylmethyl- (4) and in trace amount (r)-2-hydroxy-2-phenylethyl- (2r), 2-phenylethyl- (1) and 4-methoxyindol-3-y ... | 2001 | 11524118 |
| genetics of resistance against defences of the host plant barbarea vulgaris in a danish flea beetle population. | one essential aspect of the study of the evolution of host-plant use by insects is (variation in) its genetic basis. the genetic basis of the ability of a flea beetle (phyllotreta nemorum) to use the crucifer barbarea vulgaris ssp. arcuata (g type) as a host plant was studied in a danish population (kvaerkeby) occurring naturally on this atypical host plant. evidence was found that this ability was determined by a single, major, autosomal gene, although the presence of genes at additional loci a ... | 2000 | 11467430 |
| demic structure and its relation with the distribution of an adaptive trait in danish flea beetles. | the flea beetle phyllotreta nemorum is an oligophagous species using crucifers as host plants. in denmark two populations have been found which use barbarea vulgaris ssp. arcuata (g-type) as a host plant, whereas this plant is unsuitable for the survival of the majority of p. nemorum. in the locations in which these two populations occur, alternative host plants are also present. the plants occur in patches, some of which contain a mixture of host plants. in this study of allozyme variation, gen ... | 2001 | 11380887 |
| 1,4-dimethoxyglucobrassicin in barbarea and 4-hydroxyglucobrassicin in arabidopsis and brassica. | a novel indole glucosinolate, 1,4-dimethoxyglucobrassicin (1,4-dimethoxyindol-3-ylmethylglucosinolate), was isolated as the desulfo derivative from roots of the p-type of barbarea vulgaris ssp. arcuata, and its structure was determined by spectroscopy including 2d nmr spectroscopy. 4-hydroxyglucobrassicin (4-hydroxyindol-3-ylmethylglucosinolate) was isolated as the desulfo derivative from green siliques (fruits) of arabidopsis thaliana and identified by comparison of its (1)h nmr spectrum with t ... | 2001 | 11312886 |
| flavonoid glycosides of barbarea vulgaris l. (brassicaceae). | seven flavonoid derivatives were for the first time isolated from aerial parts of an alimentary and medicinal plant of the brassicaceae family, barbarea vulgaris l. the products were characterized on the basis of spectroscopic nmr ((1)h, (13)c, cosy, hmqc, hmbc) and fab-ms data. the occurrence of flavonoids in this plant is interesting for their important nutritional properties and for chemotaxonomical pourposes. | 2000 | 10898603 |
| reduction in fitness of flea beetles which are homozygous for an autosomal gene conferring resistance to defences in barbarea vulgaris. | major resistance genes are present in danish flea beetle (phyllotreta nemorum) populations, enabling the beetles to utilize a defended plant, barbarea vulgaris ssp. arcuata, as a host plant, whereas this plant is unsuitable for beetles lacking the resistance genes. two lines of beetles carrying a resistance gene have been established which are near-isogenic with a susceptible line. larval survival of offspring from crosses between flea beetles carrying resistance genes and susceptible beetles, t ... | 2000 | 10692007 |