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The discovery of a nonphotosynthetic plastid in malaria and other apicomplexan parasites has sparked a contentious debate about its evolutionary origin. Molecular data have led to conflicting conclusions supporting either its green algal origin or red algal origin, perhaps in common with the plastid of related dinoflagellates. This distinction is critical(More)
Diatoms dominate the biomass of phytoplankton in nutrient-rich conditions and form the basis of some of the world's most productive marine food webs. The diatom nuclear genome contains genes with bacterial and plastid origins as well as genes of the secondary endosymbiotic host (the exosymbiont), yet little is known about the relative contribution of each(More)
Leishmaniasis is a geographically widespread severe disease, with an increasing incidence of two million cases per year and 350 million people from 88 countries at risk. The causative agents are species of Leishmania, a protozoan flagellate. Visceral leishmaniasis, the most severe form of the disease, lethal if untreated, is caused by species of the(More)
The paper presents new lexicon of verb valencies for the Czech language named VerbaLex. VerbaLex is based on three valuable language resources for Czech, three independent electronic dictionaries of verb valency frames. The first resource, Czech WordNet valency frames dictionary, was created during the Balkanet project and contains semantic roles and links(More)
This paper deals with wordnet development tools. It presents a designed and developed system for lexical database editing, which is currently employed in many national wordnet building projects. We discuss basic features of the tool as well as more elaborate functions that facilitate linguistic work in multilingual environment.
In this paper, we present the new wordnet development tool called DEBVisDic. It is built on the recently developed platform for client-server XML databases, called DEB ii. This platform is able to cover many possible applications , from which we concentrate on the new, complete reimplementation of one of the most-spread wordnet editor and browser – VisDic.(More)
The analysis of 26 new small subunit rRNA sequences obtained from helminths that primarily parasitize fishes sampled from five continents provided well-supported trees, allowing us to study the phylogenetic relationships among spirurid nematodes. The analyses have shown that Dracunculoidea is a paraphyletic taxon and Anguillicolidae and Gnathostomatidae(More)
Abstract: Small subunit rRNA sequences were obtained from 38 representatives mainly of the nematode orders Spirurida (Camallanidae, Cystidicolidae, Daniconematidae, Philometridae, Physalopteridae, Rhabdochonidae, Skrjabillanidae) and, in part, Ascaridida (Anisakidae, Cucullanidae, Quimperiidae). The examined nematodes are predominantly parasites of fishes.(More)
Flagellates of the Leishmania donovani complex are causative agents of human cutaneous and visceral leishmaniasis. The complex is comprised of L. donovani, Leishmania infantum and Leishmania archibaldi, although the latter is not now considered to be a valid species. Morphological distinction of Leishmania species is impractical, so biochemical,(More)