Lenka Moravcová

Lenka Moravcová
Institute of Experimental Botany AS CR | IEB · Ecology of Invasions

About

68
Publications
16,887
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2,070
Citations
Citations since 2017
13 Research Items
1253 Citations
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
Introduction

Publications

Publications (68)
Article
Full-text available
Soil seed viability and germinability dynamics can have a major influence on the establishment and spread of plants introduced beyond their native distribution range. Yet, we lack information on how temporal variability in these traits could affect the invasion process. To address this issue, we conducted an 8-year seed burial experiment examining...
Article
Full-text available
Common ragweed ( Ambrosia artemisiifolia L.) is an annual Asteraceae species native to North America which is highly invasive across Europe and has harmful impacts, especially on human health and agriculture. Besides its wide ecological range, particularly its high reproductive power by seeds is promoting its spread to various habitats and regions....
Article
Full-text available
The Pladias (Plant Diversity Analysis and Synthesis) Database of the Czech Flora and Vegetation was developed by the Pladias project team in 2014-2018 and has been continuously updated since then. The flora section of the database contains critically revised information on the Czech vascular flora, including 13.6 million plant occurrence records, w...
Article
Full-text available
Despite recent evidence on the important role of seed banks associated with plant invasions, and a large body of literature on invasive annual Impatiens species, little is known about the seed bank characteristics of Impatiens species. To bridge this gap, we conducted a five-year field experiment where we buried seeds of two invasive species ( I. g...
Article
Full-text available
The ability to form persistent seed banks might contribute substantially to determine the invasion potential of alien plants in their new distribution ranges, given the role of seed banks as sources of propagules, genetic diversity, and in spreading the risk of germination failure over time. Using the largest seed bank dataset collated to date, com...
Article
Full-text available
As it produces large quantities of allergenic pollen that has a serious effect on human health Ambrosia artemisiifolia (common ragweed) is among the most noxious invasive plant species in Europe. It is most widespread in southern parts of Eastern and Central Europe and likely to spread into other regions. Thus its suppression is highly desirable. T...
Article
Full-text available
Seed persistence in soil is an important ecological trait enabling a species to survive at a particular site. How long the seed persists depends on its physical and physiological characteristics as well as on biotic and abiotic environmental conditions. In alien species, the ability to develop a persistent seed bank is associated with their ability...
Article
There is a lack of laboratory tests in clinical practice that can detect the activity of borrelial infection. This was the reason for testing an antigen-specific T-cell detection method in patients with neuroborreliosis: the ELISPOT method, which is capable of detecting antigen-specific T lymphocytes in clinical conditions. A group of 32 patients (...
Article
Aim of the study: The study was focused on testing the diagnostic value of detection of the chemokine CXCL13 (B lymphocyte chemoattractant) and anti-C6 peptide (synthetic peptide derived from B. burdorferi VlsE protein) antibodies in patients with neuroborreliosis (NB). Material and methods: One hundred and twenty-nine patients with clinical suspic...
Article
The study evaluates the clinical significance of CXCL13 (leukocyte chemoattractant synthesized in CSF ) in Lyme neuroborreliosis (LNB) and other aseptic CNS infections. 244 patients with symptoms of neuroinfection and/or LNB were divided into groups: A - patients with LNB-positive antibodies in serum and CSF (96) or CSF only (14); B - patients with...
Article
Full-text available
Ornamental plants constitute an important source of alien, and potentially invasive species, but also include a substantial part of native flora and consist of taxa that occur both in the wild and in cultivation; yet garden floras are largely ignored in ecological studies.We studied ornamental plants in the Czech Republic in order to provide detail...
Article
Aim: To assess the importance of Borrelia burgdorferi sensu lato DNA verification in neuroborreliosis. Material and methods: Seventy-one hospitalized patients with clinically and laboratory-confirmed neuroborreliosis were included. PCR of plasma, urine and CSF was performed in parallel before and after the treatment, and after 3 and 6 months for pl...
Article
P. (2016): Dark side of the fence: ornamental plants as a source of wild-growing flora in the Czech Republic. – Preslia 88: 163–184. Ornamental plants constitute an important source of alien, and potentially invasive species, but also include a substantial part of native flora and consist of taxa that occur both in the wild and in cultivation ; yet...
Article
The factors that promote invasive behavior in introduced plant species occur across many scales of biological and ecological organization. Factors that act at relatively small scales, for example the evolution of biological traits associated with invasiveness, scale up to shape species distributions amongst different climates and habitats, as well...
Article
Full-text available
Plant species distributions are determined by the response of populations to regional climates, however, little is known about how alien plants that arrive in central Europe from climatically warmer regions cope with the temperature conditions at the early stage of population development. Ambrosia artemisiifolia (common ragweed) is an invasive annu...
Article
Full-text available
To better understand the effect of species traits on plant invasion, we collected comparative data on 20 reproductive and dispersal traits of 93 herbaceous alien species in the Czech Republic, central Europe, introduced after 1500 A. D. We explain plant invasion success, expressed by two measures: invasiveness, i.e. whether the species is naturaliz...
Article
Full-text available
Many woody plants have been recently recognized as major invasive species with serious impacts on species diversity and functioning of invaded ecosystems. We evaluated the global invasion success of temperate trees and shrubs with native ranges in central Europe and explored the role of their native distribution and that of biological traits in det...
Article
Full-text available
One hundred twenty-four patients-53 with neuroborreliosis, 48 with erythema migrans, and 23 with Lyme arthritis-were tested in a prospective study for the presence of the DNA of Borrelia burgdorferi sensu lato in plasma, cerebrospinal fluid (CSF), urine, and synovial fluid by nested polymerase chain reaction (PCR). Specific DNA was detected using f...
Article
Full-text available
The species Carpobrotus edulis, native to South Africa, is one of the major plant invaders of Mediterranean coastal ecosystems around the world. Invasion by C. edulis exerts a great impact on coastal habitats. The low number of native species in invaded communities points to the possible existence of mechanisms suppressing their germination. In thi...
Poster
Background/Question/Methods Species traits, plasticity, and local differentiation are assumed to affect the success of invasive plants, but these factors are mostly studied separately. To compare their role in plant invasions, we used four Impatiens (Balsaminaceae) species occurring in Central Europe: native I. noli-tangere, highly invasive I. glan...
Article
Full-text available
Invasions by alien plant species significantly affect biodiversity and ecosystem functioning. Investigations of the soil seed banks of invasive plant species and changes in the composition and structure of resident seed banks following plant invasions can provide valuable insight into the long-term implications of plant invasions. Soil seed banks p...
Article
Full-text available
A complete list of all alien taxa ever recorded in the flora of the Czech Republic is presented as an update of the original checklist published in 2002. New data accumulated in the last decade are incorporated and the listing and status of some taxa are reassessed based on improved knowledge. Alien flora of the Czech Republic consists of 1454 taxa...
Article
Invasion of some alien plants is considered to be associated with inter-population differentiation and adaptations to local conditions. To obtain an insight into these processes it is convenient to compare invasive plants with their native congeners. The intra-specific differentiation during invasion was studied using four Impatiens (Balsaminaceae)...
Article
Full-text available
Citation: Moravcová L, Pyšek P, Jarošík V, Zákravský P (2011) Potential phytotoxic and shading effects of invasive Fallopia (Polygonaceae) taxa on the germination of native dominant species. Abstract Two species of the genus Fallopia (F. sachalinensis, F. japonica, Polygonaceae) native to Asia, and their hy­ brid (F. ×bohemica), belong to the most...
Article
The study has been performed on the proof of anti-neural antibodies in patients with early form of neuroborreliosis (NB). The presence of anti-ganglioside and anti-myelin associated glykoprotein (MAG) antibodies were tested in serum by the commercial western-blotting kits. Forty serum samples from 38 patients were examined (17 patients with facial...
Article
Full-text available
This paper describes the reproductive characteristics of 93 neophytes (alien species introduced after 1500 A.D.) of the flora of the Czech Republic and compares trait values between naturalized inva-sive and naturalized non-invasive neophytes. Species were sampled and seed collected in the field from multiple localities in the Czech Republic. Trait...
Article
Full-text available
Genome size has been suggested as one of the traits associated with invasivenessof plant species. To provide aquantitative insight into the role of this trait, we estimated nuclear DNA contentin 93 alien species naturalized in the Czech Republic, belonging to 32 families, by using flow cytometry, and compared it with the values reported for non-inv...
Chapter
Full-text available
rently giant hogweed is reported to occur in 19 European countries (Pyšek et al. 2008). The earliest record of Heracleum persicum comes from the seed list of the Kew Botanic Gardens in London, from 1819. Seeds from London populations of were taken by English horticulturalists and planted in northern Norway as early as 1836. Current distribution of...
Article
Assessment of PCR procedure for proving of the Borrelia burgdorferi sensu lato DNA in nerve and skin forms of Lyme borreliosis. DNA from plasma, urine and CSF was isolated by QIAamp DNA mini kit. PCR was designed as two-step amplification (nested-PCR). Each sample was tested in PCR for five target sequences: two were specific for plasmide genes enc...
Article
Full-text available
Comparative studies of closely related species may provide useful insights into the effect of species traits on invasion success since some of the biases associated with multispecies studies, such as phylo- genetic effects, are considerably reduced by virtue of the experimental design. In this study seed and seedling traits of three congeneric alie...
Article
Within a group of 28 patients with clinically manifested CNS affection, the concentration of S-100 protein and neuron specific enolasis in the serum and in the cerebrospinal fluid was monitored using commercial sets. The concentrations of neuron specific enolasis in the serum corresponded to normal serum values, in the cerebrospinal fluid a patholo...
Article
Borrelial specific DNA was examined in a group of 62 patients with different forms of Lyme borreliosis (LB) (32 patients suffered from neuroborreliosis, 19 manifested erythema migrans, and 11 joint involvement). Nested-PCR system with five newly derived primers was used in parallel. The study was organized prospectively, the presence of DNA was tes...
Article
To propose and verify a PCR assay for detecting Escherichia coli, Haemophilus influenzae, Listeria monocytogenes, Staphylococcus species, Streptococcus pneumoniae and Neisseria meningitidis serogroups B and C in a single sample of the cerebrospinal fluid of patients with purulent meningitis. DNA from the cerebrospinal fluid was isolated using the Q...
Article
Full-text available
Response of the invasive species Heracleummantegazzianum to experimental removal of tissues was studied in the Czech Republic. The study aimed at determining (i) how efficiently plants respond, in terms of quantity and quality of produced fruit, to the removal of different amounts of generative and/or vegetative tissues; and (ii) whether regenerati...
Article
Tuberculosis is a communicable disease, in most instances with a chronic course. The aetiological agent is Mycobacterium tuberculosis. Its demonstration is based on microscopic investigations and cultures. Microscopy is not sufficiently sensitive, while cultures are lengthy. One of the possibilities of speeding up diagnosis are molecular genetic me...
Article
Full-text available
We investigated the effects of different temperature regimes and dry storage on germination of H. mantegazzianum (Apiaceae, native to Caucasus) seeds in the laboratory and linked the results with studies of seasonal seed bank depletion in a common garden experiment and under field conditions. Seeds were collected at seven sites in the Slavkovský le...
Article
West Nile virus (WNV) is a member of the Flaviviridae family, genus Flavivirus. Its reservoir hosts are wild birds. Infection is transmitted to humans by infected mosquitoes of the genus Culex. In most cases, it is either asymptomatic or manifests itself as mild fever. Typically, WNV illnesshas a sudden onset with fever above 39 degrees C and accom...
Article
DNA proof is the only widely available direct diagnostic tool in Lyme borreliosis. Sensitive PCR detecting of spirochetal DNA was prepared and a prospective study in neuroborreliosis was performed. 57 hospitalised patients with active neuroborreliosis and proved CSF antibodies synthesis were examined. Nested-PCR (utilizing three targets) was used f...
Article
Full-text available
The seed bank of Heracleum mantegazzianum, native to the western Caucasus and invasive in Europe, was studied in the Slavkovský les Protected Landscape Area, the Czech Republic, during the course of two growing seasons. In each of seven study sites with dominating stands of the species, soil samples were taken in October (after the fruit release),...
Article
The aims of this paper are to determine whether the effect of position of fruit on a plant affects the germination characteristics of seed of Heracleum mantegazzianum (Apiaceae), a Caucasian species invasive in Europe, and the germination potential of this species. Reproductive characteristics of H. mantegazzianum were studied at seven sites in the...
Article
In patients presenting symptoms with a suspicion of ehrlichiosis we determined antiehrlichia antibodies and investigated the presence of Ehrlichia nucleic acid in the plasma. In our group were 46 patients with tick sucks in their case history, who presented symptoms compatible with ehrlichiosis. Anti-Ehrlichia antibodies were determined by an indir...
Article
The study focused on the detection of lymphocyte subpopulations in the cerebrospinal fluid (CSF) using the method of flow cytometry with two-colour fluorescence using monoclonal antibodies in patients presenting with tick meningoencephalitis (MEC), neuroboreliosis or Lyme disease (NB) and viral meningitis of unknown etiology. The following subpopul...
Article
In order to prevent any possible contamination during nested PCR, we have explored the possibility of nested PCR in a single test tube. A dry drop of the complete mixture for a polymerase reaction without Taq DNA polymerase and a drop of hygroscopic Taq DNA polymerase in 50% glycerol were deposited on the bottom and on the cap of a PCR test-tube to...
Article
Full-text available
Vliv teploty a zaplavování na klíčení čtyř středoevropských zástupců rodu Bolboschoenus Lenka M o r a v c o v á , Petr Z á k r a v s k ý & Zdenka H r o u d o v á D e d i c a t e d t o t h e m e m o r y o f S l a v o m i l H e j n ý: Germination response to temperature and flooding of four Central European species of Bolboschoenus . – Preslia, Praha...
Article
Full-text available
The seed germination and seedling establishment ofAlisma gramineum, A. lanceolatum andA. plantago-aquatica were investigated to find differences in the reproductive strategy of these species and to explain their ecological and distributional differentiation. The influences of stratification, temperature and flooding on seed germination, winter surv...
Article
Full-text available
Twenty five populations of Puccinellia from Czech Republic (Bohemia and Moravia), Slovakia and Hungary were examined to verify the exact distribution of P. distans and P. limosa in south Moravia and south Slovakia. Determination of the studied species was based on morphometric analysis (PCA and discriminant analysis). Chromosome numbers were counte...
Article
In 16 patients with the diagnosis of Lyme borreliosis the authors assessed the possibility of detection of specific borrelia antigens in cerebrospinal fluid. They used the method of polyacrylamide electrophoresis with subsequent Western blotting and detection of antigens using mouse monoclonal antibodies isotype IgG reacting with flagellar protein...
Article
Full-text available
Differences between two subspecies ofBolboschoenus maritimus (L.)Palla (=Scirpus maritimus L.) in different habitats (littoral and terrestrial) are partly due to variations in the buoyancy of their achenes, caused by different anatomical structure of the fruits. This hypothesis was tested by comparing fruit buoyancy and anatomy of both subspecies a...
Article
The paper deals with nervous manifestations of acute Lyme borreliosis. The authors present the results of investigations made in 77 patients in 1993-1994 who were admitted to hospital and then followed up for six months on account of nervous affections associated with Lyme borreliosis. The diagnosis of borreliosis was based on the evidence of speci...

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