نتایج جستجو برای: lsu rdna
تعداد نتایج: 12285 فیلتر نتایج به سال:
Molecular epidemiology refers to the use of molecular tools in assessing the status of a cycle of a disease in a specific population. Currently, easy, fast, and high performance molecular tools are widely used in identifying parasites in clinical and biological samples. The aim of this study was to review molecular tools for better understanding of parasitic infection in taxonomic and epidemiol...
Although Strombomonas verrucosa has been the type of genus name for almost 100 years, its lack clear diagnostic traits rendered morphological distinction from congeners impossible. As such, a study was conducted combining previously unused data (chloroplast characters) with molecular (sequences nuclear SSU, LSU and plastid-encoded SSU rDNA) extensive literature review. The focused on environmen...
While early eukaryotic life must have been unicellular, multicellular lifeforms evolved multiple times from protistan ancestors in diverse eukaryotic lineages. The origins of multicellularity are of special interest because they require evolutionary transitions towards increased levels of complexity. We have generated new sequence data from the nuclear large subunit ribosomal DNA gene (LSU rDNA...
Endophytic fungi were isolated from healthy stems and pods of cacao ( Theobroma cacao ) trees in natural forest ecosystems and agroecosystems in Latin America and West Africa. These fungi were collected for screening as a potential source of biocontrol agents for the basidiomycetous pathogens of cacao in South and Central America, Moniliophthora roreri (frosty pod rot) and Moniliophthora pernic...
The communities of arbuscular mycorrhizal fungi (AMF) colonizing the roots of three mangrove species were characterized along a tidal gradient in a mangrove swamp. A fragment, designated SSU-ITS-LSU, including part of the small subunit (SSU), the entire internal transcribed spacer (ITS) and part of the large subunit (LSU) of rDNA from samples of AMF-colonized roots was amplified, cloned and seq...
Pezizomycotina is the largest subphylum of Ascomycota and includes the vast majority of filamentous, ascoma-producing species. Here we report the results from weighted parsimony, maximum likelihood and Bayesian phylogenetic analyses of five nuclear loci (SSU rDNA, LSU rDNA, RPB1, RPB2 and EF-lalpha) from 191 taxa. Nine of the 10 Pezizomycotina classes currently recognized were represented in th...
The order Protococcidiida is one of the most poorly studied basal groups Sporozoa (Apicomplexa sensu stricto). To date, phylogenetic unity protococcidians and their relationship with other sporozoans are understudied. Only protococcidian Eleutheroschizon duboscqi has molecular evidence a sister position to “true” coccidians (Eimeria, Sarcocystis, Toxoplasma). E. characterized by epicellular dev...
Finding correct species relationships using phylogeny reconstruction based on molecular data is dependent on several empirical and technical factors. These include the choice of DNA sequence from which phylogeny is to be inferred, the establishment of character homology within a sequence alignment, and the phylogeny algorithm used. Nevertheless, sequencing and phylogeny tools provide a way of t...
A Cylindrocladium-like hyphomycete collected on leaf litter of Celtis tala in Argentina had rDNA sequence data (ITS and LSU) that showed it resides in the Hypocreales, and is a member of the Nectriaceae, closely related to, but distinct from Cylindrocladium. A new genus, Dematiocladium and species, D. celtidis gen. sp. nov. is, therefore, introduced to accommodate this fungus. Based on morpholo...
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