110 Works

Novel Supramolecular Hosts Based on Linear and Cyclic Oligomers of Glycoluril

Marek Stancl, Jan Svec & Vladimir Sindelar
We report here on supramolecular objects containing glycoluril units and functioning as host molecules. The present paper contains a detailed discussion on the synthetic approaches leading to methyle...

Real-time analysis of multiple anion mixtures in aqueous media using a single receptor

Vaclav Havel, Mirza Arfan Yawer & Vladimir Sindelar
Bambusuril macrocycles allow qualitative and quantitative sensing of anion mixtures in water using 1H NMR spectroscopy.

Supramolecular Storage and Controlled Photorelease of an Oxidizing Agent using a Bambusuril Macrocycle

Vladimir Sindelar, Edoardo Torti, Václav Havel, Mirza A. Yawer, Lucie Ludvíková, Michal Babiak & Petr Klán
Abstract The oxidizing ability of peroxodisulfate upon complexation inside the Bambusuril macrocycle cavity is inhibited. This dianionic agent can be released on demand from its stable 1:1 complex ...

Acyclic cucurbit[n]uril-type molecular containers: influence of glycoluril oligomer length on their function as solubilizing agents

Ben Zhang, Lyle Isaacs, Vladimir Sindelar, Laura Gilberg & Peter Y. Zavalij
A series of glycoluril molecular clips and acyclic CB[n]-type receptors are tested as solubilizing agents for insoluble drugs.

Binding of bambusuril with bipyridinium guests in water

Kristina Sleziakova, Mehdi Rashvand Avei, Angel E. Kaifer & Vladimir Sindelar
(2018). Binding of bambusuril with bipyridinium guests in water. Supramolecular Chemistry: Vol. 30, SI: ISMSC, pp. 832-837.

Synthesis and supramolecular properties of glycoluril tetramer

Marek Stancl, Laura Gilberg, Lukas Ustrnul, Marek Necas & Vladimir Sindelar
(2014). Synthesis and supramolecular properties of glycoluril tetramer. Supramolecular Chemistry: Vol. 26, Eighth International Symposium of Macrocyclic and Supramolecular Chemistry (ISMSC-8), pp. 168-172.

Supramolecular binding and release of sulfide and hydrosulfide anions in water

Julián Vázquez Gonzálvez & Vladimir Sindelar
Bambusuril macrocycles bind and release sulfide and hydrosulfide anions in water.

Data from: Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes

Pascal I. Hablützel, Arnout F. Grégoir, Maarten P. M. Vanhove, Filip A. M. Volckaert & Joost A. M. Raeymaekers
Geographical isolation, habitat variation and trophic specialization have contributed to a large extent to the astonishing diversity of cichlid fishes in the Great East African lakes. Because parasite communities often vary across space and environments, parasites can accompany and potentially enhance cichlid species diversification. However, host dispersal may reduce opportunities for parasite-driven evolution by homogenizing parasite communities and allele frequencies of immunity genes. To test for the relationships between parasite community variation, host dispersal and...

Data from: Fine-scale vertical stratification and guild composition of saproxylic beetles in lowland and montane forests: similar patterns despite low faunal overlap

Matthias Weiss, Jiří Procházka, Jiří Schlaghamerský & Lukas Cizek
The finer scale patterns of arthropod vertical stratification in forests are rarely studied and poorly understood. Further, there are no studies investigating whether and how altitude affects arthropod vertical stratification in temperate forests. We therefore investigated the fine-scale vertical stratification of diversity and guild structure of saproxylic beetles in temperate lowland and montane forests and compared the resulting patterns between the two habitats. The beetles were sampled with flight intercept traps arranged into vertical transects...

Data from: Metazoan parasites of African annual killifish (Nothobranchiidae): abundance, diversity, and their environmental correlates

Veronika Nezhybová, Martin Reichard, Radim Blažek & Markéta Ondračková.
Estimates of biodiversity and its global patterns are affected by parasite richness and specificity. Despite this, parasite communities are largely neglected in biodiversity estimates, especially in the tropics. We studied the parasites of annual killifish of the genus Nothobranchius that inhabit annually desiccating pools across the African savannah and survive the dry period as developmentally arrested embryos. Their discontinuous, non-overlapping generations make them a unique organism in which to study natural parasite fauna. We investigated...

Data from: Strategic exploitation of fluctuating asymmetry in male Endler's guppy courtship displays is modulated by social environment

Radomil Rezucha & Martin Reichard
Lateral asymmetry in signalling traits enables males to strategically exploit their best side. In many animals, both body colouration and fluctuating asymmetry are signals of male attractiveness. We demonstrated experimentally that even sexually naïve male Poecilia wingei were able to identify their most attractive side (i.e. that with a higher proportion of carotenoid pigmentation) and use it preferentially during courtship. Notably, males retained their strategic signalling in a male-biased social environment, whereas they ceased to...

Data from: Holokinetic drive: centromere drive in chromosomes without centromeres

Petr Bureš & František Zedek
Similar to how the model of centromere drive explains the size and complexity of centromeres in monocentrics (organisms with localized centromeres), our model of holokinetic drive is consistent with the divergent evolution of chromosomal size and number in holocentrics (organisms with non-localized centromeres) exhibiting holokinetic meiosis (holokinetics). Holokinetic drive is proposed to facilitate chromosomal fission and/or repetitive DNA removal (or any segmental deletion) when smaller homologous chromosomes are preferentially inherited or chromosomal fusion and/or repetitive...

Data from: Monophyletic origin and evolution of the largest crucifer genomes

Terezie Mandáková, Petra Hloušková, Dmitry A. German & Martin A. Lysak
Clade E, or the Hesperis-clade is one of the major Brassicaceae (Crucifereae) clades comprising some 48 genera and 351 species classified into seven tribes and is predominantly distributed across arid and montane regions of Asia. Several taxa have socio-economic significance, being important ornamental but also weedy and invasive species. From the comparative genomic perspective, the clade is noteworthy as it harbors species with the largest crucifer genomes but low numbers of chromosomes (n = 5...

Data from: The Aquilegia genome provides insight into adaptive radiation and reveals an extraordinarily polymorphic chromosome with a unique history

Danièle L. Filiault, Evangeline S. Ballerini, Terezie Mandakova, Gökçe Aköz, Nathan J. Derieg, Jeremy Schmutz, Jerry Jenkins, Jane Grimwood, Shengqiang Shu, Richard D. Hayes, Uffe Hellsten, Kerrie Barry, Juying Yan, Sirma Mihaltcheva, Miroslava Karafiatova, Viktoria Nizhynska, Elena M. Kramer, Martin A. Lysak, Scott A. Hodges & Magnus Nordborg
The columbine genus Aquilegia is a classic example of an adaptive radiation, involving a wide variety of pollinators and habitats. Here we present the genome assembly of A. coerulea 'Goldsmith', complemented by high-coverage sequencing data from 10 wild species covering the world-wide distribution. Our analyses reveal extensive allele sharing among species, and demonstrate that introgression and selection played a role in the Aquilegia radiation. We also present the remarkable discovery that the evolutionary history of...

Habitats of Pleistocene megaherbivores reconstructed from the frozen fauna remains

Irena Axmanová, Jan Robovský, Lubomír Tichý, Jiri Danihelka, Elena Troeva, Albert Protopopov & Milan Chytrý
The Late Pleistocene landscape in northern Eurasia and North America was inhabited by a specific megafaunal complex, which largely disappeared during the Pleistocene/Holocene transition. Vegetation changes are considered as one of the factors responsible for these extinctions, but the structure and composition of the Pleistocene vegetation are still poorly known. Here we complement previous studies by comparing the taxonomic composition of the plant remains found in the gastrointestinal tracts of the frozen carcasses of Pleistocene...

Data from: Testing macroecological abundance patterns: the relationship between local abundance and range size, range position and climatic suitability among European vascular plants

Maria Sporbert, Petr Keil, Gunnar Seidler, Helge Bruelheide, Ute Jandt, Svetlana Aćić, Idoia Biurrun, Juan Antonio Campos, Andraž Čarni, Milan Chytrý, Renata Custerevska, Jürgen Dengler, Valentin Golub, Florian Jansen, Anna Kuzemko, Jonathan Lenoir, Corrado Marcenò, Jesper Erenskjold Moeslund, Aaron Pérez-Haase, Solvita Rūsiņa, Urban Šilc, Ioannis Tsiripidis, Vigdis Vandvik, Kiril Vassilev, Risto Virtanen … & Erik Welk
Aim: A fundamental question in macroecology centres around understanding the relationship between species’ local abundance and their distribution in geographic and climatic space (i.e. the multi-dimensional climatic space or climatic niche). Here, we tested three macroecological hypotheses that link local abundance to the following range properties: (1) the abundance-range size relationship, (2) the abundance-range centre relationship, and (3) the abundance-suitability relationship. Location: Europe Taxon: Vascular plants Methods: Distribution range maps were extracted from the Chorological...

Data from: Selection on multiple sexual signals in two Central- and Eastern-European populations of the barn swallow

Peter Laszlo Pap, Attila Fülöp, Marie Adamkova-Kotasova, Jaroslav Cepak, Romana Michalkova, Rebecca J. Safran, Alexandru N. Stermin, Oldrich Tomasek, Csongor I. Vágási, Orsolya Vincze, Matthew R. Wilkins & Tomas Albrecht
Variation in intensity and targets of sexual selection on multiple traits has been suggested to play a major role in promoting phenotypic differentiation between populations, although the divergence in selection may depend on year, local conditions or age. In this study, we quantified sexual selection for two putative sexual signals across two Central and East European barn swallow (Hirundo rustica rustica) populations from Czech Republic and Romania over multiple years. We then related these differences...

Dataset for estimation of the biotic and climatic niche breadths and geographic range size of beech (Fagus) species worldwide

Qiong Cai, Erik Welk, Chengjun Ji, Wenjing Fang, Francesco Maria Sabatini, Jianxiao Zhu, Jiangling Zhu, Zhiyao Tang, Fabio Attorre, Juan Antonio Campos, Andraž Čarni, Milan Chytrý, Süleyman Çoban, Jürgen Dengler, Jiri Dolezal, Richard Field, József Pál Frink, Hamid Gholizadeh, Adrian Indreica, Ute Jandt, Dirk Nikolaus Karger, Jonathan Lenoir, Robert K. Peet, Remigiusz Pielech, Michele De Sanctis … & Helge Bruelheide
This dataset could be used to test whether the commonly observed positive range size–niche breadth relationship, as posited by the “niche breadth hypothesis”, exists for Fagus, one of the most dominant and widespread broad‐leaved deciduous tree genera in temperate forests of the Northern Hemisphere. There are many ways to estimate niche breadth. Here, we estimated biotic and climatic niche breadths per species using plot‐based co‐occurrence data and climate data, respectively. The range sizes of the...

Data from: The leaf economic and plant size spectra of European forest understory vegetation

Josep Padullés Cubino, Idoia Biurrun, Gianmaria Bonari, Tatiana Braslavskaya, Xavier Font, Ute Jandt, Florian Jansen, Valerijus Rašomavičius, Wolfgang Willner & Milan Chytrý
Forest understories play a vital role in ecosystem functioning and the provision of ecosystem services. However, the extent to which environmental conditions drive dominant ecological strategies in forest understories at the continental scale remains understudied. Here, we used ~29,500 forest vegetation plots sampled across Europe and classified into 25 forest types to explore the relative role of macroclimate, soil pH, and tree canopy cover in driving abundance-weighted patterns in the leaf economic spectrum (LES) and...

Bambusuril as a One-Electron Donor for Photoinduced Electron Transfer to Methyl Viologen in Mixed Crystals

Vladimir Sindelar, Lucie Ludvíková, Michal Babiak, Petr Klán, Dominik Heger, Tomas Fiala, Jan Švec, Tomáš Slanina, L’ubica Vetráková, Marek Nečas & Petr Kulhánek
Methyl viologen hexafluorophosphate (MV2+·2PF6–) and dodecamethylbambus[6]uril (BU6) form crystals in which the layers of viologen dications alternate with those of a 1:2 supramolecular complex of BU6 and PF6–. This arrangement allows for a one-electron reduction of MV2+ ions upon UV irradiation to form MV+• radical cations within the crystal structure with half-lives of several hours in air. The mechanism of this photoinduced electron transfer in the solid state and the origin of the long-lived charge-separated...

Catalogue of natural earthquakes in the NE Czech Republic, IPE-MONET

Zdeňka Sýkorová, Jana Pazdírková, Pavel Zacherle, Radim Vlach & Petr Špaček
Catalogue of natural (micro)earthquakes located using MONET+ seismic network in the NE part of the Czech Republic and adjacent parts of Poland. Includes all located earthquakes since 1996 (currently about 3000 events) and updated yearly. Complete down to ML≈0.1.

Interaction between hunting strategy, habitat type and stratum drive intraguild predation and cannibalism

Radek Michalko, Radek Michalko, Klaus Birkhofer & Stano Pekár
Intraguild predation (IGP) is a common interaction between generalist predators when they competitively exploit similar resources and prey on each other. Theoretical models predict limitations for intraguild predator coexistence unless some mechanisms, such as utilization of alternative prey (i.e., trophic niche partitioning) and cannibalism, increase the relative intraspecific clustering and interspecific segregation. As hunting strategies determine trophic niches of predators and their own vulnerability to predation, the hunting strategies may also determine the relative importance...

Data set from: Phylogenetic structure of alien plant species pools from European donor habitats

Veronika Kalusová
Aim. Many plant species native to Europe have naturalized worldwide. We tested whether the phylogenetic structure of the species pools of European habitats is related to the proportion of species from each habitat that have naturalized outside Europe (habitat’s donor role) and whether the donated species are more phylogenetically related to each other than expected by chance. Location. Europe (native range), the rest of the World (invaded range). Time period. Last c. 100 years. Major...

Data from: High predation risk decimates survival during the reproduction season

Radovan Smolinský, Zuzana Hiadlovská, Štěpán Maršala, Pavel Škrabánek, Michal Škrobánek & Natália Martínková
Predators attack conspicuous prey phenotypes that are present in the environment. Male display behaviour of conspicuous nuptial colouration becomes risky in the presence of a predator, and adult males face higher predation risk. High predation risk in one sex will lead to low survival and sex ratio bias in adult cohorts, unless the increased predation risk is compensated by higher escape rate. Here, we tested the hypothesis that sand lizards (Lacerta agilis) have sex-specific predation...

Data from: Ruderals naturalize, competitors invade: varying roles of plant adaptive strategies along the invasion continuum

Kun Guo, Petr Pyšek, Milan Chytrý, Jan Divíšek, Zdeňka Lososová, Mark Van Kleunen, Simon Pierce & Wen-Yong Guo
1. It is increasingly recognized that the factors facilitating plant invasions depend on the stage along the introduction-naturalization-invasion continuum. Adaptative strategies, i.e., combinations of functional traits that represent overall fitness in the face of one or more selection pressures, have shown promise in explaining plant invasions. However, whether adaptive strategy patterns change with the stages of plant invasion is not yet known. 2. Using the Pladias Database of the Czech Flora and Vegetation, we explored...

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