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Introduction
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January 1996 - present
Publications
Publications (107)
The diploid A. glutinosa (L.) Gaertn. is widespread throughout the European continent, except in the Iberian and Balkan Peninsulas where tetraploid populations have been discovered. We focused on the tetraploid species described as A. rohlenae Vít, Douda and Mandák that occupies the western part of the Balkan Peninsula, where it has likely complete...
Background: CACTA transposable elements (TEs) comprise one of the most abundant superfamilies of Class 2 (cut-and-paste) transposons. Over recent decades, CACTA elements were widely identified in species from the plant, fungi, and animal kingdoms, but sufficiently studied in the genomes of only a few model species although non-model genomes can bri...
The degradation of riparian ecosystems occurring throughout the past decades has motivated efforts aimed at the restoration of these ecosystems. The success of active revegetation approaches to restoration requires appropriate selection of reproductive material, which in turn requires knowledge of seed traits and germination. A. glutinosa (L.) Gaer...
A formal proposal to reject the name Chenopodium pallidum
(Chenopodiaceae / Amaranthaceae sensu APG). The reasons are explained in the full-text PDF.
Nomenclatural corrections and comments are provided on several taxa of Chenopodiaceae occurring in the Himalayas and Xizang/Tibet and adjacent areas, following the recent monographic revision of the family in that region and earlier publications. In particular, the original identity of the name Atriplex bengalensis (Chenopodium bengalense) is discu...
A morphological description is provided for Chenopodium ucrainicum Mosyakin & Mandák (Chenopodiaceae / Amaranthaceae sensu APG), a new species allied to C. suecicum and C. ficifolium. At present this new species is reliably known from several localities in Ukraine (three areas in Kyiv city, one in Kyiv Region, one in Rivne Region), but it is probab...
Diploid Alnus glutinosa s. str. and autotetraploid A. rohlenae form a narrow hybrid zone in a study area in southern Serbia, which results in triploid hybrid formation. The vast majority of previous studies have been focused on studies of maternal plants, but the offspring resulting from their crossing have not been much studied. Here, we use the v...
Extensive and complex links exist between transposable elements (TEs) and satellite DNA (satDNA), which are the
two largest fractions of eukaryotic genome. These relationships have a crucial effect on genome structure, function
and evolution. Here, we report a novel case of mutual relationships between TEs and satDNA. In the genomes of
Chenopodium...
Premise:
A set of polymorphic nuclear microsatellite loci was developed and tested for use in population genetic analyses of Anthericum ramosum (Agavaceae) and related species.
Methods and results:
Sequences of 110 primers were extracted in silico from Illumina MiSeq genome skimming data. The degree of polymorphism of 19 loci was tested in four...
Premise:
Microsatellite markers were developed for the perennial herb Salvia pratensis (Lamiaceae), a species representative of European dry grasslands. The development of microsatellite markers is needed for genetic and phylogeographical studies of species from the genus Salvia.
Methods and results:
We used low-coverage Illumina sequencing to i...
Main conclusion
Chenopodium ficifolium flowered under long days despite much lower expression of FLOWERING LOCUS T homolog than under short days.
Abstract
Frequent duplications of the FLOWERING LOCUS T (FT) gene across various taxonomic lineages resulted in FT paralogs with floral repressor function, whereas others duplicates maintained their flor...
Premise:
Polymorphic microsatellite markers were developed as a tool for genetic investigations of Filipendula vulgaris (Rosaceae) and related species.
Methods and results:
Seventeen new polymorphic microsatellite markers were developed for F. vulgaris using the Illumina MiSeq platform. Polymorphism of the 17 loci was tested in three populations...
The centre‐periphery hypothesis (CPH) predicts a decrease in population performance from the centre of the species range towards the edge, hindering further species expansion. To overcome ecological limitation, local adaptation of peripheral populations is assumed necessary to extend niche space and thus to potentially facilitate species’ range exp...
Decline of Alnus glutinosa (L.) Gaertn caused by Phytophthora xalni is an emerging threat to riparian ecosystems, from northern to southern Europe. Reported intraspecific variation within this tree species suggests a variation in resistance in response to the
pathogen. This work aimed at investigate the different response of A. glutinosa
population...
Baobab (Adansonia digitata L.) is an iconic tree of African savannahs. Its multipurpose character and nutritional composition of fruits and leaves offer high economic and social potential for local communities. There is an urgent need to characterize the genetic diversity of the Kenyan baobab populations in order to facilitate further conservation...
The Holocene history of annual plant species is at best shadowy because, for most, the palaeobotanical data are scarce or absent. Hence, there is limited information on their glacial refugia and postglacial colonization pathways. Also, little is known on how human activity has affected their expansion. Here, we outline the joint influences of postg...
Satellite DNA (satDNA) is the most variable fraction of the eukaryotic genome. Related species share a common ancestral satDNA library and changing of any library component in a particular lineage results in interspecific differences. Although the general developmental trend is clear, our knowledge of the origin and dynamics of satDNAs is still fra...
Supplementary data 1. Occurrence of CficCl-61-40 satDNA family in genomes of Chenopodium diploid species revealed by RepeatExplorer pipeline and formations of high order repeat (HOR) units
Supplementary data 3. Repetitive elements selected for sequence characterization and in situ hybridization and primers used for amplification.
Reconstruction of the major part of the ancestral monomer BLAST-detected relatedness between minisatellite monomers of CficCl-61-40 satDNA family makes it possible to determine the major part of the ancient monomer. For this reconstruction for one RE cluster of C. bryobifolium (cluster 2) and for seven RE clusters C. vulvaria (clusters 28, 94, 112,...
Chromosomal distribution CficCl-61-40 satDNA family sequences. CficCl-61-40 is labelled red; C. acuminatum-specific HOR unit CacuCl-1-117 of 117 bp is labelled green.
N). For these monomers the sequence alignments containing the consensus sequence reconstructed by RE and sequences obtained by cloning and sequencing of clones are presented. For the cloned sequences identities with the consensus is represented by dots, differences by the alternative nucleotide characters. Tables contain the % of sequence similarit...
Aim
We hypothesised that during the Holocene, the distributions of species such as crop weeds have been significantly influenced by human activity. We aimed to (a) identify the main centres of diversity of the Chenopodium album agg. species and (b) test if these species colonised Europe from western Asia, most likely due to the westward expansion o...
The formal nomenclatural proposal to conserve the name Chenopodium giganteum (Chenopodiaceae / Amaranthaceae sensu APG) with a conserved type
The formal nomenclatural proposal to reject the name Atriplex bengalensis (Chenopodium bengalense) (Chenopodiaceae / Amaranthaceae sensu APG).
Chenopodium luteorubrum is described as a new species of Chenopodiaceae (Amaranthaceae sensu APG) from coastal habitats along the Sea of Japan in the Russian Far East. It has been demonstrated that this allohexaploid species (2n = 6x = 54) combines in its genome the subgenomes ‘A’ (closely related to or inherited from C. bryoniifolium), ‘C’ (unknow...
Hybridization and polyploidization represent an important speciation mechanism in the diploid-polyploid complex of the Chenopodium album aggregate. In the present study we successfully reconstructed the evolutionary histories of the majority of Eurasian representatives of the C. album aggregate, resulting in the most comprehensive phylogenetic anal...
The presence and extent of hybridization within the Chenopodium album aggregate (Amaranthaceae) is still unclear. Although many hybrid combinations have been described, their existence in the field has never been systematically studied and verified. The main aim of this study was to ascertain the extent of interspecific hybridization between the di...
Aim
Differences in local β‐diversity (i.e., within‐site β‐diversity) along climatic and biogeographical gradients may result from regional differences in the importance of local community assembly processes (e.g. dispersal limitation and habitat filtering) or from regional differences in species pool sizes (i.e. species potentially able to colonize...
The study of variation in nuclear genome size, especially when combined with common garden experiments, significantly contributes to disentangling interspecies relationships within taxonomically complicated plant groups. The Chenopodium album aggregate is among the morphologically most variable groups and consists of many weakly differentiated cosm...
• Premise of the study: Microsatellite primers were developed to characterize the genetic diversity and structure of the annual herb Atriplex tatarica (Amaranthaceae) and to facilitate ecological and evolutionary studies of A. tatarica and its relatives.
• Methods and Results: Sixteen novel microsatellite primers were developed for A. tatarica bas...
Camu-camu [Myrciaria dubia (Kunth) McVaugh] is currently an important and promising fruit species grown in the Peruvian Amazon, as well as in Brazil, Colombia, and Bolivia. The species is valued for its high content of fruit-based vitamin C. Large plantations have been established only in the last two decades, and a substantial part of the producti...
In the present study, we investigate the variation of European representatives of Alnus subg. Alnus, i.e., Alnus glutinosa and A. incana, in Europe and partly North Africa. Four distinct Alnus taxa were recognized using a multidisciplinary approach based on multivariate morphometrics, karyology, flow cytometry and nuclear microsatellite analyses. B...
Heterocarpy enables species to effectively spread under unfavourable conditions by producing two or more types of fruit differing in ecological characteristics. Although it is frequent in annuals occupying disturbed habitats that are vulnerable to invasion, there is still a lack of congeneric studies addressing the importance of heterocarpy for spe...
The significance of the wide interspecific variation in nuclear genome size of angiosperms is still not fully understood. It has been repeatedly suggested, however, that genome size can impose phenotypic constraints on plant development, phenology and ecological performance. We analysed nuclear genome size variation in diploid and polyploid species...
Reticulate evolution is characterized by occasional hybridization between two species, creating a network of closely related taxa below and at the species level. In the present research, we aimed to verify the hypothesis of the allopolyploid origin of hexaploid C. album s. str., identify its putative parents and estimate the frequency of allopolypl...
Geographic distribution of nrDNA ITS ribotypes of Chenopodium album agg.
(A) the continental scale and (B) in five populations from the Czech Republic.
(EPS)
Summary of variable sites in nrDNA ITS of Chenopodium album agg.
Nucleotide characters of nrDNA ITS ribotypes identified in the present study in each of the 49 variable sites is indicated. Sites where particular ribotypes showed intraidividual polymorphism are marked by IUPAC ambiguity codes (Y = C or T, M = C or A, W = A or T, K = T or G, R = A or...
Frequency of occurrence of nrDNA ITS ribotypes identified in hexaploid Chenopodium album s. str. at the continental wide and population level.
Pie charts representing different populations from the Czech Republic are marked with population numbers according to Table 1. Charts named “all samples” indicate the frequency of ribotyopes in the complete...
Tremendous interspecific genome size variation is a well known phenomenon, whereas genome size within a species is supposed to be exceptionally stable and thus useful as a taxonomic trait. Using DAPI flow cytometry, we tested the stability of genome size in various representatives of Chenopodium s.s. (Amaranthaceae) across a broad geographical rang...
Key message
Slash and burn practices affect tropical forests. Our results showed strong introgression between Inga ingoides and Inga edulis in the species contact area. Interspecific hybridization could be sought to improve yield and tolerance to flooding and further increase the economic potential of the poorly drained Amazonian soils and minimize...
We reconstructed the historical pattern of postglacial biogeographic range expansion of the boreal tree species Alnus incana in Europe.
To assess population genetic structure and diversity, we performed a combined analysis of nuclear microsatellite loci and chloroplast DNA sequences (65 populations, 1004 individuals).
Analysis of haplotype and micr...
Background and aims:
Polyploidy in plants has been studied extensively. In many groups, two or more cytotypes represent separate biological entities with distinct distributions, histories and ecology. This study examines the distribution and origins of cytotypes of Alnus glutinosa in Europe, North Africa and western Asia.
Methods:
A combined app...
Genetic admixture is supposed to be an important trigger of species expansions because it can create the potential for selection of genotypes suitable for new climatic conditions. Up until now, however, no continent-wide population genetic study has performed a detailed reconstruction of admixture events during natural species expansions. To fill t...
We investigated 39 previously developed Betula, Alnus, and Corylus simple sequence repeat (SSR) markers for their utility in the cross-generic amplification of two European alder species, i.e., Alnus glutinosa and A. incana. Of these markers, ten loci had successful amplification within Alnus species. Finally, we designed two multiplexes composed o...
Background/aims:
Recently, new palaeoecological records supported by molecular analyses and palaeodistributional modelling have provided more comprehensive insights into plant behaviour during the last Quaternary cycle. We reviewed the migration history of species of subgenus Alnus during the last 50,000 years in Europe with a focus on (1) a gener...
Background and Aims Despite the great importance of autopolyploidy in the evolution of angiosperms, relatively little attention has been devoted
to autopolyploids in natural polyploid systems. Several hypotheses have been proposed to explain why autopolyploids are so
common and successful, for example increased genetic diversity and heterozygosity...
North American Pinus strobus is a highly invasive tree species in Central Europe. Using ten polymorphic microsatellite loci we compared various aspects of the large-scale genetic diversity of individuals from 30 sites in the native distribution range with those from 30 sites in the European adventive distribution range. To investigate the ascertain...
We attempted to confirm that seed banks can be viewed as an important genetic reservoir by testing the hypothesis that standing (aboveground) plants represent a nonrandom sample of the seed bank. We sampled multilocus allozyme genotypes from three species with different life history strategies: Amaranthus retroflexus, Carduus acanthoides, Pastinaca...
Allele frequencies of Amaranthus retroflexus. Allele frequencies at six loci in four populations and four life history stages of Amaranthus retroflexus are given (.pdf).
(PDF)
Allele frequencies of Carduus acanthoides. Allele frequencies at eight loci in four populations and life history stages of Carduus acanthoides are given (.pdf).
(PDF)
Allele frequencies of Pastinaca sativa. Allele frequencies at eight loci in four populations and five life history stages of Pastinaca sativa are given (.pdf).
(PDF)
The ability of a species to adapt to sub-optimal conditions at the margin of its distribution range and to cope with environmental stress is considered to be important for its successful geographic expansion. To ascertain the roles of phenotypic differentiation and plasticity in the expansion of the annual Atriplex tatarica, we compared plants from...
Genetic variation was assessed in a range of populations of Amaranthus retroflexus using isoenzyme analysis. Population genetic diversity was measured by evaluating patterns of variation at six putatively neutral isoenzyme loci (comprising 24 putative alleles) within and among 20 populations of A. retroflexus collected in different habitats: rudera...