University of Ostrava | Biology and ecology

The kinetoplast genome contains several thousands of minicircles of various sequence classes and several scores of maxicircles. We demonstrated that maxicircles are heterogeneous in clonal cultures of Leishmania major, and, therefore,... more

Bookmark
Download
- by Pavel Flegontov
- •
- 2
  Leishmania Major, Molecular Sequence Data

We discuss here some results which suggest that radically different maxicircle classes coexist within the same kinetoplast. These data, although tentative and incomplete, may provide a new outlook on the kinetoplast genome structure and... more

The maxicircle divergent region (DR) was partially sequenced in several isolates of Leishmania major. The sequence contains various repeated elements: two types of long GC-rich repeats alternating with clusters of short AT-rich repeats.... more

Bookmark
Download
- by Pavel Flegontov
- •
- 2
  Leishmania Major, Molecular Sequence Data

The maxicircle control region [also termed divergent region (DR)] composed of various repeat elements remains the most poorly studied part of the kinetoplast genome. Only three extensive DR sequences demonstrating no significant... more

Phylum Euglenozoa comprises three groups of eukaryotic microbes (kinetoplastids, diplonemids, and euglenids), the mitochondrial (mt) genomes of which exhibit radically different modes of organization and expression. Gene fragmentation is... more

Bookmark
Download
- by Pavel Flegontov
- •
- 5
  Genetics, Microbiology, RNA Editing, Neutral Evolution

Bookmark
Download
- by Sylwia Wierzcholska and +1
  V. Plášek
- •

Moss Nyholmiella obtusifolia is relatively common in Poland, but mostly sterile specimens are found in herbarium collections. Sporogenes were created very rare. During bryological explorations conducted in NE Poland in 2009 -2011,... more

Bookmark
Download
- by V. Plášek and +1
  E. Novozámská
- •

Validation of a new moss variety -Orthotrichum affine var. bohemicum. -Čas. Slez. Muz. Opava (A), 61: 1-2, 2012.

Bookmark
Download
- by Svatava Kubešová and +1
  V. Plášek
- •

2013 Autumn Meeting of the Bryological and Lichenological Section of the Czech Botanical Society took place in the northeast-Moravian Beskydy Mts. The total of 221 bryophytes (60 liverworts and 161 moss species) recorded and/or collected... more

2013 Autumn Meeting of the Bryological and Lichenological Section of the Czech Botanical Society took place in the northeast-Moravian Beskydy Mts. The total of 221 bryophytes (60 liverworts and 161 moss species) recorded and/or collected during the Meeting's excursions is listed in this contribution. The most important records included endangered taxa Bryum cyclophyllum, Pseudobryum cinclidioides, and Scorpidium revolvens, and vulnerable taxa Riccia warnstorfii, Syzygiella autumnalis, Buxbaumia viridis, Callicladium haldanianum, Hamatocaulis vernicosus, and Physcomitrium sphaericum. Ceratodon purpureus: 1 not.; 2a not.; 5 not.; 7 not. Cirriphyllum piliferum: 1 not.; 8 not. Climacium dendroides: 1 not.; 2b not. Cratoneuron filicinum: 1 not.; 8 MK, MT Ctenidium molluscum: 1 JT; 4 EV, JT, MK; 7 JT Cynodontium polycarpon: 5 not.; 6 not.; 7 JKo Cynodontium strumiferum: 6 not. Dichodontium palustre (LC-att): 7 JT Dichodontium pellucidum: 2a MK; 4 JP, JT, SK; 5 MT; 7 JT 8 not. Dicranella heteromalla: 1 not.; 4 not.; 5 JT; 7 JT; 8 not. Dicranella staphylina: 2a JP, MK, SK Dicranodontium denudatum: 1 not.; 4 not.; 5 not.; 6 not.; 7 not.; 8 not. Dicranum montanum: 1 not.; 3 not.; 4 not.; 5 MK, SK; 7 not.; 8 not. Dicranum scoparium: 1 not.; 3 not.; 4 not.; 5 not.; 6 not.; 7 not.; 8 JK Dicranum tauricum: 8 MK Didymodon rigidulus: 2a JP Encalypta streptocarpa: 2a not. Eurhynchium angustirete: 5 not.; 7 JT; 8 not. Fissidens adianthoides (LC-att): 1 not. Fissidens bryoides: 7 JT Fissidens dubius var. dubius: 4 MT Fissidens pusillus (LC-att): 4 EV, JT, MT Fissidens taxifolius: 1 JB; 7 not. Funaria hygrometrica: 2a not., 2b SK Grimmia hartmanii: 4 not.; 7 not. Grimmia longirostris: 6 EV Grimmia muehlenbeckii: 5 JP; 6 not. Hamatocaulis vernicosus (VU): 1 SK Hedwigia ciliata: 5 MT; 6 not. Herzogiella seligeri: 1 not.; 4 JT; 5 MK; 8 not. Heterocladium heteropterum: 5 not. Hygroamblystegium fluviatile: 4 not.; 5 MT Hygrohypnella ochracea: 8 not. Hylocomium splendens: 5 not.; 7 not.; 8 not. Hypnum andoi: 4 JT; 5 MT; 6 not. Hypnum cupressiforme var. cupressiforme: 1 not.; 4 not.; 5 not.; 6 not.; 7 not.; 8 not. Hypnum pallescens (LC-att): 4 not.; 5 JB, SK Isothecium alopecuroides: 4 JT; 5 not.; 7 not. Leskea polycarpa: 5 JT, SK Leucobryum glaucum: 1 JT; 4 not.; 6 not.; 8 MT Mnium hornum: 1 not.; 8 MT Mnium spinosum: 4 EV; 5 MT Ochyraea duriuscula (LR-nt): 7 JKo, JT Orthotrichum pallens: 1 VP; 7 JKo Orthotrichum speciosum: 1 VP; 8 MT Orthotrichum stramineum: 1 VP Oxyrrhynchium hians: 1 not. Oxystegus tenuirostris (LC-att): 4 JT; 7 JKo Paraleucobryum longifolium: 4 SK; 5 SK; 6 not. Philonotis caespitosa (LC-att): 1 JK, JB Philonotis fontana: 1 MK, SK; 2a cf. not.; 4 JT Physcomitrella patens (LC-att): 2b JK, JKo, SK, EM Physcomitrium pyriforme: 2b SK Physcomitrium sphaericum (VU): 2a JK, JT, SK, 2b JK, JKo, JT, SK, EM Plagiomnium affine: 1 not.; 3 not.; 5 not.; 7 not.; 8 not. Plagiomnium elatum (LC-att): 1 not. Plagiomnium medium (LR-nt): 8 JB Plagiomnium undulatum: 1 not.; 4 not.; 5 MK, MT; 7 not.; 8 not. Plagiothecium curvifolium: 1 not.; 4 not.; 5 not.; 7 JT; 8 not. Plagiothecium denticulatum var. denticulatum: 1 not.; 4 cf. not.; 5 MK, SK; 7 JKo; 8 not. Plagiothecium laetum: 1 not.; 4 not.; 5 MK; 6 not.; 7 not. Plagiothecium nemorale: 6 not. Plagiothecium succulentum: 4 cf. not.; 7 JKo Plagiothecium undulatum: 1 not.; 5 not.; 7 not.; 8 not. Pleurozium schreberi: 1 not.; 5 not.; 6 not.; 7 JT; 8 not. Pogonatum urnigerum: 2b not.; 5 JT; 8 not. Pohlia cruda: 5 not. Pohlia nutans subsp. nutans: 1 not.; 3 not.; 5 not.; 7 not.; 8 not. Pohlia proligera: 1 not.; 2a EM Pohlia wahlenbergii: 1 not.; 2a JP, SK Polytrichum commune: 1 JT, SK; 3 not.; 7 not.; 8 not. Polytrichum formosum: 1 JT, SK; 2b not.; 3 not.; 4 not.; 5 not.; 6 not.; 7 JKo, JT; 8 not. Polytrichum juniperinum: 1 not.; 4 SK; 7 JT Polytrichum pallidisetum (LC-att): 5 SK Polytrichum piliferum: 5 JT, SK Polytrichum strictum: 1 not. Pseudephemerum nitidum: 2a not., 2b JP, JT, SK, MK Pseudobryum cinclidioides (EN): 8 JK, MK Pseudoleskeella nervosa: 5 JT, SK Pseudotaxiphyllum elegans: 4 JP; 5 SK; 8 not. Pterigynandrum filiforme: 4 not.; 5 JT; 7 not.; 8 MT Racomitrium aciculare: 7 JT Racomitrium canescens: 2a MK Rhizomnium magnifolium (LC-att): 8 not. Rhizomnium punctatum: 1 not.; 3 not.; 4 JT, SK; 5 MK; 7 not.; 8 not. Rhodobryum roseum: 7 not.; 8 MK Rhynchostegium riparioides: 4 SK Rhytidiadelphus loreus: 1 JT, SK; 5 not. Rhytidiadelphus squarrosus: 1 not.; 3 not.; 5 not.; 8 not. Rhytidiadelphus subpinnatus (LC-att): 1 not.; 7 JT; 8 JK, MK

Bookmark
Download
- by Svatava Kubešová and +1
  V. Plášek
- •

The location of stomata and the structural details of exostome teeth and endostome segments are among the most important taxonomic features used for identifying <em>Orthotrichum</em> species. Certain species pairs (e.g.... more

The study presents a phylogenetic analysis of species of the moss genus Orthotrichum. ITS1 and ITS2 for 30 species were sequenced. The results do not fully reflect the current division of Orthotrichum into subgenera and sections.... more

The bryoflora of the only glacier cirque of the Hrubý Jeseník Mts. -Velká kotlina was surveyed in a detailed 3-year inventory in 2001-2003, along with several other similar localities of natural high-montane tree-less habitats: Malá... more

Orthotrichum moravicum Plášek & Sawicki, sp. nov., is a confirmed record of a new species from the Czech Republic. The new taxon is described in subgen. Pulchella and illustrated by photos. Molecular data indicating the phylogenetic... more

Many mire vascular plant and bryophyte species have disjunct occurrences in Bulgaria despite that most of south-eastern Europe is not suitable for the occurrence of permanently waterlogged and nutrient-limited wetlands due to the current... more

Many mire vascular plant and bryophyte species have disjunct occurrences in Bulgaria despite that most of south-eastern Europe is not suitable for the occurrence of permanently waterlogged and nutrient-limited wetlands due to the current and glacial dry climate conditions as well as prevailing limestone bedrock. Unfortunately, such important distributional data are scattered throughout numerous papers and reports, and are not adequately provided even by national checklists and floras. No attempt to summarize them has been done yet. Therefore, the main aim of this paper is to review and enlarge such data, and to use the resulting data set to address the question whether the disjunctly occurring rare species are concentrated in certain mire complexes or even in particular vegetation plots and if they do characterize such localities. Our current research shows that the phenomenon of isolated occurrences of mire plants in Bulgaria is even more widespread than previously thought. Seventeen species were found as new for Bulgaria with their distribution range limits there, and distributional data of many other species, including some previously considered extinct, were enlarged. Fifty-four mire species were found at only three or fewer sites. Our analyses showed a conspicuous concentration of rare, disjunctly occurring species at a few sites, which are, however, largely unexplored in terms of palaeoecology or ecology, not legally protected and currently threatened by human activities. The distributions of target rare species within Bulgarian mires were significantly nested, which means that more speciespoor assemblages were subsets of richer ones. Nestedness was significantly related to the estimated area of mire complex, but not all high-diversity mires were large. Disjunctly occurring rare species were more concentrated in particular vegetation plots at lower altitudes and in mineral-rich fens. Fragmentary data about the ecology and history of Bulgarian refugial mires suggest that these mires harbour specific ecotypes and genotypes, contain specifically distributed biogeographic groups of species, provide an opportunity to test biogeographical hypotheses and shelter crucial information about the history of European mires. Thus, these sites have a potential to become a source of very important information for biogeographical, palaeoecological, and phylogeographical analyses.

Bookmark
Download
- by V. Plášek
- •
- 5
  Conservation, Plant Biology, Distributed Data Mining, South Eastern Europe

Bookmark
Download
- by V. Plášek
- •
- 2
  Evolutionary Biology, Plant Biology

Biology and ecology

Log In